/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-three-array-sum.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 12:01:53,479 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 12:01:53,482 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 12:01:53,527 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 12:01:53,528 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 12:01:53,531 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 12:01:53,534 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 12:01:53,536 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 12:01:53,538 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 12:01:53,542 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 12:01:53,543 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 12:01:53,544 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 12:01:53,544 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 12:01:53,545 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 12:01:53,545 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 12:01:53,546 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 12:01:53,547 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 12:01:53,549 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 12:01:53,551 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 12:01:53,556 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 12:01:53,558 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 12:01:53,559 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 12:01:53,560 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 12:01:53,562 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 12:01:53,569 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 12:01:53,569 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 12:01:53,569 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 12:01:53,571 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 12:01:53,571 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 12:01:53,572 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 12:01:53,572 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 12:01:53,573 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 12:01:53,574 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 12:01:53,575 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 12:01:53,576 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 12:01:53,576 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 12:01:53,576 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 12:01:53,577 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 12:01:53,577 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 12:01:53,577 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 12:01:53,578 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 12:01:53,579 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 12:01:53,607 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 12:01:53,608 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 12:01:53,609 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 12:01:53,609 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 12:01:53,610 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 12:01:53,610 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 12:01:53,610 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 12:01:53,610 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 12:01:53,610 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 12:01:53,610 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 12:01:53,611 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 12:01:53,611 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 12:01:53,611 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 12:01:53,611 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 12:01:53,611 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 12:01:53,611 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 12:01:53,612 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 12:01:53,612 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 12:01:53,612 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 12:01:53,612 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 12:01:53,612 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 12:01:53,612 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 12:01:53,612 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 12:01:53,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 12:01:53,613 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 12:01:53,613 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 12:01:53,613 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 12:01:53,613 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 12:01:53,613 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 12:01:53,613 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 12:01:53,613 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 12:01:53,613 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 12:01:53,884 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 12:01:53,916 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 12:01:53,919 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 12:01:53,920 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 12:01:53,920 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 12:01:53,921 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-three-array-sum.wvr.c [2022-09-16 12:01:53,984 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cf846f66/96c2f240328b4ce79b153850917d18ca/FLAGf8ced8fed [2022-09-16 12:01:54,412 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 12:01:54,413 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-sum.wvr.c [2022-09-16 12:01:54,419 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cf846f66/96c2f240328b4ce79b153850917d18ca/FLAGf8ced8fed [2022-09-16 12:01:54,431 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cf846f66/96c2f240328b4ce79b153850917d18ca [2022-09-16 12:01:54,433 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 12:01:54,434 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 12:01:54,437 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 12:01:54,437 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 12:01:54,440 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 12:01:54,441 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 12:01:54" (1/1) ... [2022-09-16 12:01:54,442 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a3b6ad7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:54, skipping insertion in model container [2022-09-16 12:01:54,442 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 12:01:54" (1/1) ... [2022-09-16 12:01:54,448 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 12:01:54,469 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 12:01:54,717 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-three-array-sum.wvr.c[2691,2704] [2022-09-16 12:01:54,729 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 12:01:54,740 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 12:01:54,781 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-three-array-sum.wvr.c[2691,2704] [2022-09-16 12:01:54,787 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 12:01:54,806 INFO L208 MainTranslator]: Completed translation [2022-09-16 12:01:54,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:54 WrapperNode [2022-09-16 12:01:54,809 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 12:01:54,811 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 12:01:54,811 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 12:01:54,811 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 12:01:54,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:54" (1/1) ... [2022-09-16 12:01:54,844 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:54" (1/1) ... [2022-09-16 12:01:54,864 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 156 [2022-09-16 12:01:54,864 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 12:01:54,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 12:01:54,865 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 12:01:54,865 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 12:01:54,872 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:54" (1/1) ... [2022-09-16 12:01:54,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:54" (1/1) ... [2022-09-16 12:01:54,875 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:54" (1/1) ... [2022-09-16 12:01:54,876 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:54" (1/1) ... [2022-09-16 12:01:54,884 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:54" (1/1) ... [2022-09-16 12:01:54,888 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:54" (1/1) ... [2022-09-16 12:01:54,890 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:54" (1/1) ... [2022-09-16 12:01:54,893 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 12:01:54,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 12:01:54,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 12:01:54,894 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 12:01:54,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:54" (1/1) ... [2022-09-16 12:01:54,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 12:01:54,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:01:54,943 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 12:01:54,969 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 12:01:54,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 12:01:54,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 12:01:54,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 12:01:54,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 12:01:54,994 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 12:01:54,994 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 12:01:54,994 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 12:01:54,994 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 12:01:54,994 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-16 12:01:54,994 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-16 12:01:54,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 12:01:54,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-16 12:01:54,995 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-16 12:01:54,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-16 12:01:54,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 12:01:54,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 12:01:54,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 12:01:54,996 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 12:01:55,108 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 12:01:55,109 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 12:01:55,395 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 12:01:55,448 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 12:01:55,448 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-09-16 12:01:55,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 12:01:55 BoogieIcfgContainer [2022-09-16 12:01:55,451 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 12:01:55,452 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 12:01:55,452 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 12:01:55,455 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 12:01:55,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 12:01:54" (1/3) ... [2022-09-16 12:01:55,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dc57e78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 12:01:55, skipping insertion in model container [2022-09-16 12:01:55,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:54" (2/3) ... [2022-09-16 12:01:55,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dc57e78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 12:01:55, skipping insertion in model container [2022-09-16 12:01:55,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 12:01:55" (3/3) ... [2022-09-16 12:01:55,457 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-sum.wvr.c [2022-09-16 12:01:55,468 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 12:01:55,468 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-09-16 12:01:55,468 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 12:01:55,585 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-09-16 12:01:55,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 243 places, 253 transitions, 530 flow [2022-09-16 12:01:55,726 INFO L130 PetriNetUnfolder]: 20/250 cut-off events. [2022-09-16 12:01:55,726 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-16 12:01:55,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 250 events. 20/250 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 240 event pairs, 0 based on Foata normal form. 0/216 useless extension candidates. Maximal degree in co-relation 206. Up to 3 conditions per place. [2022-09-16 12:01:55,733 INFO L82 GeneralOperation]: Start removeDead. Operand has 243 places, 253 transitions, 530 flow [2022-09-16 12:01:55,749 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 220 places, 229 transitions, 473 flow [2022-09-16 12:01:55,765 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 12:01:55,773 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;@6579a0eb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 12:01:55,773 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-09-16 12:01:55,803 INFO L130 PetriNetUnfolder]: 3/61 cut-off events. [2022-09-16 12:01:55,803 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 12:01:55,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:01:55,804 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] [2022-09-16 12:01:55,805 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-09-16 12:01:55,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:01:55,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1818961626, now seen corresponding path program 1 times [2022-09-16 12:01:55,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:01:55,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907871379] [2022-09-16 12:01:55,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:01:55,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:01:55,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:01:56,094 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 12:01:56,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:01:56,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907871379] [2022-09-16 12:01:56,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907871379] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:01:56,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:01:56,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:01:56,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530694747] [2022-09-16 12:01:56,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:01:56,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:01:56,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:01:56,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:01:56,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:01:56,151 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 253 [2022-09-16 12:01:56,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 229 transitions, 473 flow. Second operand has 4 states, 4 states have (on average 194.5) internal successors, (778), 4 states have internal predecessors, (778), 0 states have call successors, (0), 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 12:01:56,159 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:01:56,159 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 253 [2022-09-16 12:01:56,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:01:56,422 INFO L130 PetriNetUnfolder]: 75/517 cut-off events. [2022-09-16 12:01:56,422 INFO L131 PetriNetUnfolder]: For 84/84 co-relation queries the response was YES. [2022-09-16 12:01:56,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 740 conditions, 517 events. 75/517 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1870 event pairs, 34 based on Foata normal form. 68/475 useless extension candidates. Maximal degree in co-relation 369. Up to 93 conditions per place. [2022-09-16 12:01:56,432 INFO L137 encePairwiseOnDemand]: 221/253 looper letters, 66 selfloop transitions, 14 changer transitions 6/252 dead transitions. [2022-09-16 12:01:56,432 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 252 transitions, 694 flow [2022-09-16 12:01:56,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:01:56,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:01:56,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1069 transitions. [2022-09-16 12:01:56,455 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8450592885375494 [2022-09-16 12:01:56,456 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1069 transitions. [2022-09-16 12:01:56,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1069 transitions. [2022-09-16 12:01:56,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:01:56,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1069 transitions. [2022-09-16 12:01:56,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 213.8) internal successors, (1069), 5 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 12:01:56,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 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 12:01:56,483 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 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 12:01:56,485 INFO L175 Difference]: Start difference. First operand has 220 places, 229 transitions, 473 flow. Second operand 5 states and 1069 transitions. [2022-09-16 12:01:56,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 252 transitions, 694 flow [2022-09-16 12:01:56,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 252 transitions, 676 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 12:01:56,500 INFO L231 Difference]: Finished difference. Result has 222 places, 222 transitions, 532 flow [2022-09-16 12:01:56,502 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=532, PETRI_PLACES=222, PETRI_TRANSITIONS=222} [2022-09-16 12:01:56,507 INFO L287 CegarLoopForPetriNet]: 220 programPoint places, 2 predicate places. [2022-09-16 12:01:56,508 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 222 transitions, 532 flow [2022-09-16 12:01:56,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 194.5) internal successors, (778), 4 states have internal predecessors, (778), 0 states have call successors, (0), 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 12:01:56,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:01:56,510 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] [2022-09-16 12:01:56,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 12:01:56,510 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-09-16 12:01:56,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:01:56,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1025513994, now seen corresponding path program 1 times [2022-09-16 12:01:56,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:01:56,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675390243] [2022-09-16 12:01:56,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:01:56,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:01:56,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:01:56,615 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 12:01:56,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:01:56,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675390243] [2022-09-16 12:01:56,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675390243] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:01:56,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401956282] [2022-09-16 12:01:56,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:01:56,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:01:56,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:01:56,644 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 12:01:56,646 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 12:01:56,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:01:56,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 12:01:56,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:01:56,795 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 12:01:56,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:01:56,856 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 12:01:56,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401956282] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:01:56,857 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:01:56,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 12:01:56,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788758081] [2022-09-16 12:01:56,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:01:56,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 12:01:56,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:01:56,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 12:01:56,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 12:01:56,862 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 253 [2022-09-16 12:01:56,864 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 222 transitions, 532 flow. Second operand has 12 states, 12 states have (on average 195.66666666666666) internal successors, (2348), 12 states have internal predecessors, (2348), 0 states have call successors, (0), 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 12:01:56,865 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:01:56,865 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 253 [2022-09-16 12:01:56,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:01:57,414 INFO L130 PetriNetUnfolder]: 186/1153 cut-off events. [2022-09-16 12:01:57,414 INFO L131 PetriNetUnfolder]: For 103/103 co-relation queries the response was YES. [2022-09-16 12:01:57,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1706 conditions, 1153 events. 186/1153 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 6133 event pairs, 85 based on Foata normal form. 9/917 useless extension candidates. Maximal degree in co-relation 1016. Up to 84 conditions per place. [2022-09-16 12:01:57,426 INFO L137 encePairwiseOnDemand]: 230/253 looper letters, 129 selfloop transitions, 62 changer transitions 0/357 dead transitions. [2022-09-16 12:01:57,427 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 357 transitions, 1286 flow [2022-09-16 12:01:57,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 12:01:57,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 12:01:57,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3674 transitions. [2022-09-16 12:01:57,433 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8067632850241546 [2022-09-16 12:01:57,433 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3674 transitions. [2022-09-16 12:01:57,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3674 transitions. [2022-09-16 12:01:57,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:01:57,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3674 transitions. [2022-09-16 12:01:57,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 204.11111111111111) internal successors, (3674), 18 states have internal predecessors, (3674), 0 states have call successors, (0), 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 12:01:57,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 253.0) internal successors, (4807), 19 states have internal predecessors, (4807), 0 states have call successors, (0), 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 12:01:57,449 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 253.0) internal successors, (4807), 19 states have internal predecessors, (4807), 0 states have call successors, (0), 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 12:01:57,449 INFO L175 Difference]: Start difference. First operand has 222 places, 222 transitions, 532 flow. Second operand 18 states and 3674 transitions. [2022-09-16 12:01:57,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 357 transitions, 1286 flow [2022-09-16 12:01:57,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 357 transitions, 1278 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 12:01:57,460 INFO L231 Difference]: Finished difference. Result has 236 places, 264 transitions, 894 flow [2022-09-16 12:01:57,461 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=894, PETRI_PLACES=236, PETRI_TRANSITIONS=264} [2022-09-16 12:01:57,461 INFO L287 CegarLoopForPetriNet]: 220 programPoint places, 16 predicate places. [2022-09-16 12:01:57,462 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 264 transitions, 894 flow [2022-09-16 12:01:57,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 195.66666666666666) internal successors, (2348), 12 states have internal predecessors, (2348), 0 states have call successors, (0), 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 12:01:57,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:01:57,464 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] [2022-09-16 12:01:57,486 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 12:01:57,684 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 12:01:57,684 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-09-16 12:01:57,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:01:57,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1726163209, now seen corresponding path program 1 times [2022-09-16 12:01:57,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:01:57,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550510013] [2022-09-16 12:01:57,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:01:57,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:01:57,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:01:57,795 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 12:01:57,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:01:57,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550510013] [2022-09-16 12:01:57,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550510013] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:01:57,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679596507] [2022-09-16 12:01:57,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:01:57,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:01:57,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:01:57,798 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 12:01:57,799 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 12:01:57,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:01:57,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 12:01:57,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:01:57,911 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:01:57,911 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 12:01:57,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679596507] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:01:57,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 12:01:57,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 12:01:57,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703195038] [2022-09-16 12:01:57,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:01:57,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 12:01:57,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:01:57,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 12:01:57,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 12:01:57,914 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 253 [2022-09-16 12:01:57,915 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 264 transitions, 894 flow. Second operand has 6 states, 6 states have (on average 195.33333333333334) internal successors, (1172), 6 states have internal predecessors, (1172), 0 states have call successors, (0), 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 12:01:57,915 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:01:57,915 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 253 [2022-09-16 12:01:57,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:01:58,178 INFO L130 PetriNetUnfolder]: 186/1141 cut-off events. [2022-09-16 12:01:58,178 INFO L131 PetriNetUnfolder]: For 255/255 co-relation queries the response was YES. [2022-09-16 12:01:58,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1762 conditions, 1141 events. 186/1141 cut-off events. For 255/255 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 6049 event pairs, 85 based on Foata normal form. 12/908 useless extension candidates. Maximal degree in co-relation 1363. Up to 264 conditions per place. [2022-09-16 12:01:58,190 INFO L137 encePairwiseOnDemand]: 236/253 looper letters, 67 selfloop transitions, 43 changer transitions 0/276 dead transitions. [2022-09-16 12:01:58,190 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 276 transitions, 1093 flow [2022-09-16 12:01:58,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 12:01:58,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 12:01:58,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1431 transitions. [2022-09-16 12:01:58,193 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8080180688876341 [2022-09-16 12:01:58,193 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1431 transitions. [2022-09-16 12:01:58,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1431 transitions. [2022-09-16 12:01:58,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:01:58,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1431 transitions. [2022-09-16 12:01:58,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 204.42857142857142) internal successors, (1431), 7 states have internal predecessors, (1431), 0 states have call successors, (0), 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 12:01:58,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 253.0) internal successors, (2024), 8 states have internal predecessors, (2024), 0 states have call successors, (0), 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 12:01:58,198 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 253.0) internal successors, (2024), 8 states have internal predecessors, (2024), 0 states have call successors, (0), 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 12:01:58,198 INFO L175 Difference]: Start difference. First operand has 236 places, 264 transitions, 894 flow. Second operand 7 states and 1431 transitions. [2022-09-16 12:01:58,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 276 transitions, 1093 flow [2022-09-16 12:01:58,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 276 transitions, 977 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-09-16 12:01:58,211 INFO L231 Difference]: Finished difference. Result has 230 places, 252 transitions, 783 flow [2022-09-16 12:01:58,211 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=697, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=783, PETRI_PLACES=230, PETRI_TRANSITIONS=252} [2022-09-16 12:01:58,213 INFO L287 CegarLoopForPetriNet]: 220 programPoint places, 10 predicate places. [2022-09-16 12:01:58,214 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 252 transitions, 783 flow [2022-09-16 12:01:58,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 195.33333333333334) internal successors, (1172), 6 states have internal predecessors, (1172), 0 states have call successors, (0), 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 12:01:58,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:01:58,215 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2022-09-16 12:01:58,243 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 12:01:58,440 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 12:01:58,440 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-09-16 12:01:58,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:01:58,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1188441190, now seen corresponding path program 2 times [2022-09-16 12:01:58,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:01:58,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730615276] [2022-09-16 12:01:58,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:01:58,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:01:58,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:01:58,571 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:01:58,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:01:58,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730615276] [2022-09-16 12:01:58,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730615276] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:01:58,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247174794] [2022-09-16 12:01:58,572 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 12:01:58,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:01:58,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:01:58,574 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 12:01:58,575 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 12:01:58,645 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 12:01:58,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 12:01:58,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-16 12:01:58,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:01:58,779 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-09-16 12:01:58,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:01:58,886 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-09-16 12:01:58,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247174794] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:01:58,886 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:01:58,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-09-16 12:01:58,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537310040] [2022-09-16 12:01:58,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:01:58,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-16 12:01:58,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:01:58,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-16 12:01:58,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-09-16 12:01:58,898 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 253 [2022-09-16 12:01:58,901 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 252 transitions, 783 flow. Second operand has 18 states, 18 states have (on average 170.61111111111111) internal successors, (3071), 18 states have internal predecessors, (3071), 0 states have call successors, (0), 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 12:01:58,902 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:01:58,902 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 253 [2022-09-16 12:01:58,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:02:00,219 INFO L130 PetriNetUnfolder]: 1842/5394 cut-off events. [2022-09-16 12:02:00,219 INFO L131 PetriNetUnfolder]: For 409/409 co-relation queries the response was YES. [2022-09-16 12:02:00,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8694 conditions, 5394 events. 1842/5394 cut-off events. For 409/409 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 42540 event pairs, 1127 based on Foata normal form. 6/3531 useless extension candidates. Maximal degree in co-relation 6938. Up to 427 conditions per place. [2022-09-16 12:02:00,258 INFO L137 encePairwiseOnDemand]: 226/253 looper letters, 224 selfloop transitions, 81 changer transitions 0/445 dead transitions. [2022-09-16 12:02:00,258 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 445 transitions, 1882 flow [2022-09-16 12:02:00,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-09-16 12:02:00,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-09-16 12:02:00,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4319 transitions. [2022-09-16 12:02:00,266 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7112977602108037 [2022-09-16 12:02:00,266 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4319 transitions. [2022-09-16 12:02:00,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4319 transitions. [2022-09-16 12:02:00,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:02:00,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4319 transitions. [2022-09-16 12:02:00,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 179.95833333333334) internal successors, (4319), 24 states have internal predecessors, (4319), 0 states have call successors, (0), 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 12:02:00,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 253.0) internal successors, (6325), 25 states have internal predecessors, (6325), 0 states have call successors, (0), 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 12:02:00,282 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 253.0) internal successors, (6325), 25 states have internal predecessors, (6325), 0 states have call successors, (0), 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 12:02:00,282 INFO L175 Difference]: Start difference. First operand has 230 places, 252 transitions, 783 flow. Second operand 24 states and 4319 transitions. [2022-09-16 12:02:00,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 445 transitions, 1882 flow [2022-09-16 12:02:00,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 445 transitions, 1791 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-09-16 12:02:00,288 INFO L231 Difference]: Finished difference. Result has 242 places, 268 transitions, 946 flow [2022-09-16 12:02:00,289 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=675, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=946, PETRI_PLACES=242, PETRI_TRANSITIONS=268} [2022-09-16 12:02:00,289 INFO L287 CegarLoopForPetriNet]: 220 programPoint places, 22 predicate places. [2022-09-16 12:02:00,290 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 268 transitions, 946 flow [2022-09-16 12:02:00,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 170.61111111111111) internal successors, (3071), 18 states have internal predecessors, (3071), 0 states have call successors, (0), 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 12:02:00,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:02:00,291 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, 1, 1, 1, 1, 1, 1, 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 12:02:00,308 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 12:02:00,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:02:00,492 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-09-16 12:02:00,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:02:00,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1967586283, now seen corresponding path program 1 times [2022-09-16 12:02:00,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:02:00,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285192860] [2022-09-16 12:02:00,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:02:00,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:02:00,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:02:00,552 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 12:02:00,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:02:00,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285192860] [2022-09-16 12:02:00,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285192860] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:02:00,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:02:00,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 12:02:00,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158091178] [2022-09-16 12:02:00,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:02:00,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 12:02:00,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:02:00,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 12:02:00,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 12:02:00,554 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 253 [2022-09-16 12:02:00,555 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 268 transitions, 946 flow. Second operand has 3 states, 3 states have (on average 225.66666666666666) internal successors, (677), 3 states have internal predecessors, (677), 0 states have call successors, (0), 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 12:02:00,555 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:02:00,555 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 253 [2022-09-16 12:02:00,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:02:00,767 INFO L130 PetriNetUnfolder]: 512/2279 cut-off events. [2022-09-16 12:02:00,767 INFO L131 PetriNetUnfolder]: For 343/343 co-relation queries the response was YES. [2022-09-16 12:02:00,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3669 conditions, 2279 events. 512/2279 cut-off events. For 343/343 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 16808 event pairs, 259 based on Foata normal form. 0/1873 useless extension candidates. Maximal degree in co-relation 654. Up to 596 conditions per place. [2022-09-16 12:02:00,786 INFO L137 encePairwiseOnDemand]: 249/253 looper letters, 21 selfloop transitions, 2 changer transitions 0/277 dead transitions. [2022-09-16 12:02:00,786 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 277 transitions, 1014 flow [2022-09-16 12:02:00,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 12:02:00,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 12:02:00,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 697 transitions. [2022-09-16 12:02:00,788 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9183135704874835 [2022-09-16 12:02:00,788 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 697 transitions. [2022-09-16 12:02:00,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 697 transitions. [2022-09-16 12:02:00,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:02:00,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 697 transitions. [2022-09-16 12:02:00,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 232.33333333333334) internal successors, (697), 3 states have internal predecessors, (697), 0 states have call successors, (0), 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 12:02:00,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 0 states have call successors, (0), 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 12:02:00,791 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 0 states have call successors, (0), 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 12:02:00,791 INFO L175 Difference]: Start difference. First operand has 242 places, 268 transitions, 946 flow. Second operand 3 states and 697 transitions. [2022-09-16 12:02:00,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 277 transitions, 1014 flow [2022-09-16 12:02:00,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 277 transitions, 891 flow, removed 12 selfloop flow, removed 15 redundant places. [2022-09-16 12:02:00,795 INFO L231 Difference]: Finished difference. Result has 230 places, 269 transitions, 837 flow [2022-09-16 12:02:00,796 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=823, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=837, PETRI_PLACES=230, PETRI_TRANSITIONS=269} [2022-09-16 12:02:00,796 INFO L287 CegarLoopForPetriNet]: 220 programPoint places, 10 predicate places. [2022-09-16 12:02:00,796 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 269 transitions, 837 flow [2022-09-16 12:02:00,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.66666666666666) internal successors, (677), 3 states have internal predecessors, (677), 0 states have call successors, (0), 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 12:02:00,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:02:00,797 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, 1, 1, 1, 1, 1, 1, 1, 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 12:02:00,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 12:02:00,797 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-09-16 12:02:00,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:02:00,797 INFO L85 PathProgramCache]: Analyzing trace with hash -804736836, now seen corresponding path program 1 times [2022-09-16 12:02:00,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:02:00,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431702524] [2022-09-16 12:02:00,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:02:00,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:02:00,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:02:00,891 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 12:02:00,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:02:00,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431702524] [2022-09-16 12:02:00,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431702524] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:02:00,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:02:00,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:02:00,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170618627] [2022-09-16 12:02:00,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:02:00,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:02:00,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:02:00,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:02:00,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:02:00,893 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 253 [2022-09-16 12:02:00,894 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 269 transitions, 837 flow. Second operand has 4 states, 4 states have (on average 218.75) internal successors, (875), 4 states have internal predecessors, (875), 0 states have call successors, (0), 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 12:02:00,894 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:02:00,894 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 253 [2022-09-16 12:02:00,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:02:02,133 INFO L130 PetriNetUnfolder]: 3830/10945 cut-off events. [2022-09-16 12:02:02,133 INFO L131 PetriNetUnfolder]: For 732/1299 co-relation queries the response was YES. [2022-09-16 12:02:02,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20190 conditions, 10945 events. 3830/10945 cut-off events. For 732/1299 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 112777 event pairs, 2562 based on Foata normal form. 434/9216 useless extension candidates. Maximal degree in co-relation 4070. Up to 3487 conditions per place. [2022-09-16 12:02:02,211 INFO L137 encePairwiseOnDemand]: 247/253 looper letters, 46 selfloop transitions, 4 changer transitions 0/298 dead transitions. [2022-09-16 12:02:02,212 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 298 transitions, 1018 flow [2022-09-16 12:02:02,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:02:02,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:02:02,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1137 transitions. [2022-09-16 12:02:02,214 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8988142292490119 [2022-09-16 12:02:02,214 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1137 transitions. [2022-09-16 12:02:02,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1137 transitions. [2022-09-16 12:02:02,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:02:02,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1137 transitions. [2022-09-16 12:02:02,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 227.4) internal successors, (1137), 5 states have internal predecessors, (1137), 0 states have call successors, (0), 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 12:02:02,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 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 12:02:02,219 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 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 12:02:02,219 INFO L175 Difference]: Start difference. First operand has 230 places, 269 transitions, 837 flow. Second operand 5 states and 1137 transitions. [2022-09-16 12:02:02,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 298 transitions, 1018 flow [2022-09-16 12:02:02,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 298 transitions, 1016 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 12:02:02,225 INFO L231 Difference]: Finished difference. Result has 236 places, 272 transitions, 865 flow [2022-09-16 12:02:02,226 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=835, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=865, PETRI_PLACES=236, PETRI_TRANSITIONS=272} [2022-09-16 12:02:02,226 INFO L287 CegarLoopForPetriNet]: 220 programPoint places, 16 predicate places. [2022-09-16 12:02:02,226 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 272 transitions, 865 flow [2022-09-16 12:02:02,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 218.75) internal successors, (875), 4 states have internal predecessors, (875), 0 states have call successors, (0), 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 12:02:02,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:02:02,227 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:02:02,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-16 12:02:02,227 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-09-16 12:02:02,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:02:02,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1064786281, now seen corresponding path program 1 times [2022-09-16 12:02:02,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:02:02,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591434284] [2022-09-16 12:02:02,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:02:02,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:02:02,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:02:02,285 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 12:02:02,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:02:02,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591434284] [2022-09-16 12:02:02,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591434284] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:02:02,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:02:02,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:02:02,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431027132] [2022-09-16 12:02:02,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:02:02,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:02:02,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:02:02,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:02:02,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:02:02,289 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 253 [2022-09-16 12:02:02,289 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 272 transitions, 865 flow. Second operand has 4 states, 4 states have (on average 220.75) internal successors, (883), 4 states have internal predecessors, (883), 0 states have call successors, (0), 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 12:02:02,289 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:02:02,290 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 253 [2022-09-16 12:02:02,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:02:03,018 INFO L130 PetriNetUnfolder]: 1765/6381 cut-off events. [2022-09-16 12:02:03,019 INFO L131 PetriNetUnfolder]: For 809/928 co-relation queries the response was YES. [2022-09-16 12:02:03,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9826 conditions, 6381 events. 1765/6381 cut-off events. For 809/928 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 62023 event pairs, 707 based on Foata normal form. 14/4883 useless extension candidates. Maximal degree in co-relation 6457. Up to 1695 conditions per place. [2022-09-16 12:02:03,061 INFO L137 encePairwiseOnDemand]: 247/253 looper letters, 33 selfloop transitions, 4 changer transitions 0/289 dead transitions. [2022-09-16 12:02:03,061 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 289 transitions, 983 flow [2022-09-16 12:02:03,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:02:03,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:02:03,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1134 transitions. [2022-09-16 12:02:03,064 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8964426877470356 [2022-09-16 12:02:03,064 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1134 transitions. [2022-09-16 12:02:03,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1134 transitions. [2022-09-16 12:02:03,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:02:03,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1134 transitions. [2022-09-16 12:02:03,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 226.8) internal successors, (1134), 5 states have internal predecessors, (1134), 0 states have call successors, (0), 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 12:02:03,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 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 12:02:03,068 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 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 12:02:03,068 INFO L175 Difference]: Start difference. First operand has 236 places, 272 transitions, 865 flow. Second operand 5 states and 1134 transitions. [2022-09-16 12:02:03,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 289 transitions, 983 flow [2022-09-16 12:02:03,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 289 transitions, 981 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 12:02:03,073 INFO L231 Difference]: Finished difference. Result has 242 places, 274 transitions, 889 flow [2022-09-16 12:02:03,073 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=863, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=889, PETRI_PLACES=242, PETRI_TRANSITIONS=274} [2022-09-16 12:02:03,073 INFO L287 CegarLoopForPetriNet]: 220 programPoint places, 22 predicate places. [2022-09-16 12:02:03,074 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 274 transitions, 889 flow [2022-09-16 12:02:03,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 220.75) internal successors, (883), 4 states have internal predecessors, (883), 0 states have call successors, (0), 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 12:02:03,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:02:03,074 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:02:03,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 12:02:03,075 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-09-16 12:02:03,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:02:03,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1057893232, now seen corresponding path program 1 times [2022-09-16 12:02:03,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:02:03,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821109292] [2022-09-16 12:02:03,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:02:03,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:02:03,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:02:03,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:02:03,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:02:03,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821109292] [2022-09-16 12:02:03,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821109292] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:02:03,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430666847] [2022-09-16 12:02:03,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:02:03,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:02:03,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:02:03,132 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 12:02:03,133 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 12:02:03,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:02:03,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-16 12:02:03,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:02:03,359 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 12:02:03,359 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 12:02:03,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430666847] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:02:03,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 12:02:03,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 10 [2022-09-16 12:02:03,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178922688] [2022-09-16 12:02:03,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:02:03,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 12:02:03,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:02:03,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 12:02:03,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-09-16 12:02:03,364 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 253 [2022-09-16 12:02:03,365 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 274 transitions, 889 flow. Second operand has 7 states, 7 states have (on average 187.0) internal successors, (1309), 7 states have internal predecessors, (1309), 0 states have call successors, (0), 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 12:02:03,365 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:02:03,365 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 253 [2022-09-16 12:02:03,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:02:05,566 INFO L130 PetriNetUnfolder]: 5745/15666 cut-off events. [2022-09-16 12:02:05,566 INFO L131 PetriNetUnfolder]: For 5529/5529 co-relation queries the response was YES. [2022-09-16 12:02:05,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30824 conditions, 15666 events. 5745/15666 cut-off events. For 5529/5529 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 162557 event pairs, 4622 based on Foata normal form. 0/12573 useless extension candidates. Maximal degree in co-relation 17756. Up to 7446 conditions per place. [2022-09-16 12:02:05,700 INFO L137 encePairwiseOnDemand]: 234/253 looper letters, 164 selfloop transitions, 43 changer transitions 0/378 dead transitions. [2022-09-16 12:02:05,701 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 378 transitions, 1660 flow [2022-09-16 12:02:05,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 12:02:05,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 12:02:05,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2149 transitions. [2022-09-16 12:02:05,706 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7721882860222781 [2022-09-16 12:02:05,706 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2149 transitions. [2022-09-16 12:02:05,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2149 transitions. [2022-09-16 12:02:05,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:02:05,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2149 transitions. [2022-09-16 12:02:05,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 195.36363636363637) internal successors, (2149), 11 states have internal predecessors, (2149), 0 states have call successors, (0), 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 12:02:05,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 253.0) internal successors, (3036), 12 states have internal predecessors, (3036), 0 states have call successors, (0), 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 12:02:05,715 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 253.0) internal successors, (3036), 12 states have internal predecessors, (3036), 0 states have call successors, (0), 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 12:02:05,716 INFO L175 Difference]: Start difference. First operand has 242 places, 274 transitions, 889 flow. Second operand 11 states and 2149 transitions. [2022-09-16 12:02:05,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 378 transitions, 1660 flow [2022-09-16 12:02:05,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 378 transitions, 1652 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 12:02:05,758 INFO L231 Difference]: Finished difference. Result has 253 places, 291 transitions, 1071 flow [2022-09-16 12:02:05,758 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=885, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1071, PETRI_PLACES=253, PETRI_TRANSITIONS=291} [2022-09-16 12:02:05,761 INFO L287 CegarLoopForPetriNet]: 220 programPoint places, 33 predicate places. [2022-09-16 12:02:05,762 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 291 transitions, 1071 flow [2022-09-16 12:02:05,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 187.0) internal successors, (1309), 7 states have internal predecessors, (1309), 0 states have call successors, (0), 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 12:02:05,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:02:05,762 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:02:05,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-09-16 12:02:05,987 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 12:02:05,988 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-09-16 12:02:05,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:02:05,988 INFO L85 PathProgramCache]: Analyzing trace with hash -249543994, now seen corresponding path program 1 times [2022-09-16 12:02:05,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:02:05,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131492481] [2022-09-16 12:02:05,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:02:05,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:02:06,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:02:06,049 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 12:02:06,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:02:06,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131492481] [2022-09-16 12:02:06,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131492481] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:02:06,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:02:06,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:02:06,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405890531] [2022-09-16 12:02:06,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:02:06,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:02:06,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:02:06,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:02:06,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:02:06,053 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 253 [2022-09-16 12:02:06,054 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 291 transitions, 1071 flow. Second operand has 4 states, 4 states have (on average 220.25) internal successors, (881), 4 states have internal predecessors, (881), 0 states have call successors, (0), 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 12:02:06,054 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:02:06,054 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 253 [2022-09-16 12:02:06,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:02:08,600 INFO L130 PetriNetUnfolder]: 4373/13215 cut-off events. [2022-09-16 12:02:08,600 INFO L131 PetriNetUnfolder]: For 3651/4079 co-relation queries the response was YES. [2022-09-16 12:02:08,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24588 conditions, 13215 events. 4373/13215 cut-off events. For 3651/4079 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 147296 event pairs, 2096 based on Foata normal form. 378/11321 useless extension candidates. Maximal degree in co-relation 15646. Up to 4084 conditions per place. [2022-09-16 12:02:09,016 INFO L137 encePairwiseOnDemand]: 247/253 looper letters, 40 selfloop transitions, 4 changer transitions 0/315 dead transitions. [2022-09-16 12:02:09,016 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 315 transitions, 1225 flow [2022-09-16 12:02:09,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:02:09,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:02:09,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1136 transitions. [2022-09-16 12:02:09,020 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8980237154150198 [2022-09-16 12:02:09,020 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1136 transitions. [2022-09-16 12:02:09,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1136 transitions. [2022-09-16 12:02:09,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:02:09,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1136 transitions. [2022-09-16 12:02:09,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 227.2) internal successors, (1136), 5 states have internal predecessors, (1136), 0 states have call successors, (0), 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 12:02:09,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 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 12:02:09,025 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 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 12:02:09,025 INFO L175 Difference]: Start difference. First operand has 253 places, 291 transitions, 1071 flow. Second operand 5 states and 1136 transitions. [2022-09-16 12:02:09,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 315 transitions, 1225 flow [2022-09-16 12:02:09,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 315 transitions, 1220 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 12:02:09,047 INFO L231 Difference]: Finished difference. Result has 258 places, 294 transitions, 1096 flow [2022-09-16 12:02:09,047 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=1066, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1096, PETRI_PLACES=258, PETRI_TRANSITIONS=294} [2022-09-16 12:02:09,048 INFO L287 CegarLoopForPetriNet]: 220 programPoint places, 38 predicate places. [2022-09-16 12:02:09,048 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 294 transitions, 1096 flow [2022-09-16 12:02:09,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 220.25) internal successors, (881), 4 states have internal predecessors, (881), 0 states have call successors, (0), 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 12:02:09,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:02:09,049 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:02:09,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-16 12:02:09,049 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-09-16 12:02:09,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:02:09,050 INFO L85 PathProgramCache]: Analyzing trace with hash -842355628, now seen corresponding path program 1 times [2022-09-16 12:02:09,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:02:09,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805736049] [2022-09-16 12:02:09,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:02:09,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:02:09,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:02:09,118 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:02:09,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:02:09,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805736049] [2022-09-16 12:02:09,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805736049] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:02:09,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069305651] [2022-09-16 12:02:09,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:02:09,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:02:09,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:02:09,121 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 12:02:09,156 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 12:02:09,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:02:09,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-16 12:02:09,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:02:09,371 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-09-16 12:02:09,371 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 12:02:09,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069305651] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:02:09,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 12:02:09,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-09-16 12:02:09,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408576290] [2022-09-16 12:02:09,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:02:09,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 12:02:09,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:02:09,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 12:02:09,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-09-16 12:02:09,375 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 253 [2022-09-16 12:02:09,376 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 294 transitions, 1096 flow. Second operand has 7 states, 7 states have (on average 184.85714285714286) internal successors, (1294), 7 states have internal predecessors, (1294), 0 states have call successors, (0), 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 12:02:09,376 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:02:09,376 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 253 [2022-09-16 12:02:09,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:02:16,465 INFO L130 PetriNetUnfolder]: 13235/35794 cut-off events. [2022-09-16 12:02:16,465 INFO L131 PetriNetUnfolder]: For 12092/12894 co-relation queries the response was YES. [2022-09-16 12:02:16,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74567 conditions, 35794 events. 13235/35794 cut-off events. For 12092/12894 co-relation queries the response was YES. Maximal size of possible extension queue 915. Compared 418778 event pairs, 12218 based on Foata normal form. 196/31696 useless extension candidates. Maximal degree in co-relation 46687. Up to 18948 conditions per place. [2022-09-16 12:02:16,939 INFO L137 encePairwiseOnDemand]: 234/253 looper letters, 158 selfloop transitions, 43 changer transitions 4/379 dead transitions. [2022-09-16 12:02:16,939 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 379 transitions, 1790 flow [2022-09-16 12:02:16,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 12:02:16,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 12:02:16,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2125 transitions. [2022-09-16 12:02:16,944 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7635644987423643 [2022-09-16 12:02:16,945 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2125 transitions. [2022-09-16 12:02:16,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2125 transitions. [2022-09-16 12:02:16,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:02:16,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2125 transitions. [2022-09-16 12:02:16,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 193.1818181818182) internal successors, (2125), 11 states have internal predecessors, (2125), 0 states have call successors, (0), 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 12:02:16,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 253.0) internal successors, (3036), 12 states have internal predecessors, (3036), 0 states have call successors, (0), 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 12:02:16,957 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 253.0) internal successors, (3036), 12 states have internal predecessors, (3036), 0 states have call successors, (0), 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 12:02:16,957 INFO L175 Difference]: Start difference. First operand has 258 places, 294 transitions, 1096 flow. Second operand 11 states and 2125 transitions. [2022-09-16 12:02:16,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 379 transitions, 1790 flow [2022-09-16 12:02:17,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 379 transitions, 1788 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 12:02:17,100 INFO L231 Difference]: Finished difference. Result has 269 places, 296 transitions, 1196 flow [2022-09-16 12:02:17,101 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=1094, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1196, PETRI_PLACES=269, PETRI_TRANSITIONS=296} [2022-09-16 12:02:17,102 INFO L287 CegarLoopForPetriNet]: 220 programPoint places, 49 predicate places. [2022-09-16 12:02:17,102 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 296 transitions, 1196 flow [2022-09-16 12:02:17,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 184.85714285714286) internal successors, (1294), 7 states have internal predecessors, (1294), 0 states have call successors, (0), 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 12:02:17,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:02:17,103 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:02:17,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-09-16 12:02:17,330 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 12:02:17,330 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-09-16 12:02:17,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:02:17,331 INFO L85 PathProgramCache]: Analyzing trace with hash 379987028, now seen corresponding path program 1 times [2022-09-16 12:02:17,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:02:17,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403530182] [2022-09-16 12:02:17,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:02:17,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:02:17,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:02:17,394 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 12:02:17,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:02:17,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403530182] [2022-09-16 12:02:17,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403530182] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:02:17,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121726531] [2022-09-16 12:02:17,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:02:17,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:02:17,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:02:17,397 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 12:02:17,398 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 12:02:17,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:02:17,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-16 12:02:17,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:02:17,656 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-09-16 12:02:17,656 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 12:02:17,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121726531] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:02:17,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 12:02:17,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-09-16 12:02:17,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349563433] [2022-09-16 12:02:17,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:02:17,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 12:02:17,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:02:17,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 12:02:17,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-09-16 12:02:17,661 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 253 [2022-09-16 12:02:17,663 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 296 transitions, 1196 flow. Second operand has 7 states, 7 states have (on average 186.14285714285714) internal successors, (1303), 7 states have internal predecessors, (1303), 0 states have call successors, (0), 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 12:02:17,663 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:02:17,663 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 253 [2022-09-16 12:02:17,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:02:22,680 INFO L130 PetriNetUnfolder]: 11068/25168 cut-off events. [2022-09-16 12:02:22,680 INFO L131 PetriNetUnfolder]: For 14637/14763 co-relation queries the response was YES. [2022-09-16 12:02:22,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54977 conditions, 25168 events. 11068/25168 cut-off events. For 14637/14763 co-relation queries the response was YES. Maximal size of possible extension queue 899. Compared 266616 event pairs, 9712 based on Foata normal form. 126/22194 useless extension candidates. Maximal degree in co-relation 31287. Up to 15696 conditions per place. [2022-09-16 12:02:23,034 INFO L137 encePairwiseOnDemand]: 234/253 looper letters, 84 selfloop transitions, 24 changer transitions 92/373 dead transitions. [2022-09-16 12:02:23,034 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 373 transitions, 1854 flow [2022-09-16 12:02:23,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 12:02:23,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 12:02:23,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2127 transitions. [2022-09-16 12:02:23,042 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7642831476823572 [2022-09-16 12:02:23,042 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2127 transitions. [2022-09-16 12:02:23,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2127 transitions. [2022-09-16 12:02:23,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:02:23,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2127 transitions. [2022-09-16 12:02:23,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 193.36363636363637) internal successors, (2127), 11 states have internal predecessors, (2127), 0 states have call successors, (0), 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 12:02:23,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 253.0) internal successors, (3036), 12 states have internal predecessors, (3036), 0 states have call successors, (0), 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 12:02:23,055 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 253.0) internal successors, (3036), 12 states have internal predecessors, (3036), 0 states have call successors, (0), 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 12:02:23,055 INFO L175 Difference]: Start difference. First operand has 269 places, 296 transitions, 1196 flow. Second operand 11 states and 2127 transitions. [2022-09-16 12:02:23,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 373 transitions, 1854 flow [2022-09-16 12:02:23,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 373 transitions, 1814 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 12:02:23,142 INFO L231 Difference]: Finished difference. Result has 278 places, 275 transitions, 1047 flow [2022-09-16 12:02:23,142 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=1156, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1047, PETRI_PLACES=278, PETRI_TRANSITIONS=275} [2022-09-16 12:02:23,143 INFO L287 CegarLoopForPetriNet]: 220 programPoint places, 58 predicate places. [2022-09-16 12:02:23,143 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 275 transitions, 1047 flow [2022-09-16 12:02:23,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 186.14285714285714) internal successors, (1303), 7 states have internal predecessors, (1303), 0 states have call successors, (0), 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 12:02:23,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:02:23,144 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:02:23,171 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 12:02:23,356 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 12:02:23,357 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-09-16 12:02:23,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:02:23,358 INFO L85 PathProgramCache]: Analyzing trace with hash -890949700, now seen corresponding path program 1 times [2022-09-16 12:02:23,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:02:23,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838866536] [2022-09-16 12:02:23,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:02:23,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:02:23,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:02:23,418 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-16 12:02:23,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:02:23,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838866536] [2022-09-16 12:02:23,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838866536] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:02:23,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668015362] [2022-09-16 12:02:23,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:02:23,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:02:23,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:02:23,436 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 12:02:23,483 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 12:02:23,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:02:23,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-16 12:02:23,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:02:23,607 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-16 12:02:23,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:02:23,641 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-16 12:02:23,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668015362] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:02:23,641 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:02:23,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2022-09-16 12:02:23,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433411273] [2022-09-16 12:02:23,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:02:23,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-16 12:02:23,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:02:23,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-16 12:02:23,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-09-16 12:02:23,646 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 253 [2022-09-16 12:02:23,648 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 275 transitions, 1047 flow. Second operand has 10 states, 10 states have (on average 221.9) internal successors, (2219), 10 states have internal predecessors, (2219), 0 states have call successors, (0), 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 12:02:23,648 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:02:23,648 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 253 [2022-09-16 12:02:23,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:02:25,243 INFO L130 PetriNetUnfolder]: 2857/6834 cut-off events. [2022-09-16 12:02:25,244 INFO L131 PetriNetUnfolder]: For 2397/2475 co-relation queries the response was YES. [2022-09-16 12:02:25,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14505 conditions, 6834 events. 2857/6834 cut-off events. For 2397/2475 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 68159 event pairs, 438 based on Foata normal form. 78/6084 useless extension candidates. Maximal degree in co-relation 13992. Up to 1284 conditions per place. [2022-09-16 12:02:25,336 INFO L137 encePairwiseOnDemand]: 244/253 looper letters, 60 selfloop transitions, 14 changer transitions 0/327 dead transitions. [2022-09-16 12:02:25,337 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 327 transitions, 1356 flow [2022-09-16 12:02:25,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-09-16 12:02:25,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-09-16 12:02:25,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2705 transitions. [2022-09-16 12:02:25,341 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8909749670619236 [2022-09-16 12:02:25,341 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2705 transitions. [2022-09-16 12:02:25,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2705 transitions. [2022-09-16 12:02:25,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:02:25,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2705 transitions. [2022-09-16 12:02:25,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 225.41666666666666) internal successors, (2705), 12 states have internal predecessors, (2705), 0 states have call successors, (0), 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 12:02:25,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 253.0) internal successors, (3289), 13 states have internal predecessors, (3289), 0 states have call successors, (0), 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 12:02:25,351 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 253.0) internal successors, (3289), 13 states have internal predecessors, (3289), 0 states have call successors, (0), 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 12:02:25,351 INFO L175 Difference]: Start difference. First operand has 278 places, 275 transitions, 1047 flow. Second operand 12 states and 2705 transitions. [2022-09-16 12:02:25,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 327 transitions, 1356 flow [2022-09-16 12:02:25,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 327 transitions, 1167 flow, removed 16 selfloop flow, removed 18 redundant places. [2022-09-16 12:02:25,365 INFO L231 Difference]: Finished difference. Result has 262 places, 282 transitions, 953 flow [2022-09-16 12:02:25,366 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=870, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=953, PETRI_PLACES=262, PETRI_TRANSITIONS=282} [2022-09-16 12:02:25,366 INFO L287 CegarLoopForPetriNet]: 220 programPoint places, 42 predicate places. [2022-09-16 12:02:25,367 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 282 transitions, 953 flow [2022-09-16 12:02:25,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 221.9) internal successors, (2219), 10 states have internal predecessors, (2219), 0 states have call successors, (0), 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 12:02:25,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:02:25,368 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:02:25,395 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 12:02:25,583 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 12:02:25,584 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-09-16 12:02:25,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:02:25,584 INFO L85 PathProgramCache]: Analyzing trace with hash -890949699, now seen corresponding path program 1 times [2022-09-16 12:02:25,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:02:25,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916124028] [2022-09-16 12:02:25,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:02:25,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:02:25,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:02:25,643 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-16 12:02:25,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:02:25,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916124028] [2022-09-16 12:02:25,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916124028] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:02:25,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267850587] [2022-09-16 12:02:25,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:02:25,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:02:25,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:02:25,647 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 12:02:25,649 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 12:02:25,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:02:25,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 3 conjunts are in the unsatisfiable core [2022-09-16 12:02:25,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:02:25,798 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-16 12:02:25,798 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 12:02:25,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267850587] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:02:25,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 12:02:25,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-09-16 12:02:25,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76536425] [2022-09-16 12:02:25,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:02:25,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:02:25,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:02:25,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:02:25,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-09-16 12:02:25,801 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 253 [2022-09-16 12:02:25,801 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 282 transitions, 953 flow. Second operand has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 0 states have call successors, (0), 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 12:02:25,801 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:02:25,801 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 253 [2022-09-16 12:02:25,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:02:27,587 INFO L130 PetriNetUnfolder]: 2893/9942 cut-off events. [2022-09-16 12:02:27,588 INFO L131 PetriNetUnfolder]: For 4386/4476 co-relation queries the response was YES. [2022-09-16 12:02:27,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19345 conditions, 9942 events. 2893/9942 cut-off events. For 4386/4476 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 110158 event pairs, 1224 based on Foata normal form. 306/8658 useless extension candidates. Maximal degree in co-relation 12497. Up to 2508 conditions per place. [2022-09-16 12:02:27,712 INFO L137 encePairwiseOnDemand]: 248/253 looper letters, 23 selfloop transitions, 7 changer transitions 0/283 dead transitions. [2022-09-16 12:02:27,713 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 283 transitions, 996 flow [2022-09-16 12:02:27,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 12:02:27,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 12:02:27,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 901 transitions. [2022-09-16 12:02:27,715 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8903162055335968 [2022-09-16 12:02:27,715 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 901 transitions. [2022-09-16 12:02:27,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 901 transitions. [2022-09-16 12:02:27,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:02:27,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 901 transitions. [2022-09-16 12:02:27,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 225.25) internal successors, (901), 4 states have internal predecessors, (901), 0 states have call successors, (0), 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 12:02:27,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 253.0) internal successors, (1265), 5 states have internal predecessors, (1265), 0 states have call successors, (0), 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 12:02:27,718 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 253.0) internal successors, (1265), 5 states have internal predecessors, (1265), 0 states have call successors, (0), 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 12:02:27,718 INFO L175 Difference]: Start difference. First operand has 262 places, 282 transitions, 953 flow. Second operand 4 states and 901 transitions. [2022-09-16 12:02:27,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 283 transitions, 996 flow [2022-09-16 12:02:27,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 283 transitions, 982 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-09-16 12:02:27,742 INFO L231 Difference]: Finished difference. Result has 257 places, 277 transitions, 918 flow [2022-09-16 12:02:27,743 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=904, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=918, PETRI_PLACES=257, PETRI_TRANSITIONS=277} [2022-09-16 12:02:27,743 INFO L287 CegarLoopForPetriNet]: 220 programPoint places, 37 predicate places. [2022-09-16 12:02:27,743 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 277 transitions, 918 flow [2022-09-16 12:02:27,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 0 states have call successors, (0), 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 12:02:27,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:02:27,744 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:02:27,771 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 12:02:27,962 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 12:02:27,963 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-09-16 12:02:27,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:02:27,963 INFO L85 PathProgramCache]: Analyzing trace with hash 2030449089, now seen corresponding path program 1 times [2022-09-16 12:02:27,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:02:27,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024800424] [2022-09-16 12:02:27,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:02:27,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:02:27,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:02:28,050 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-16 12:02:28,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:02:28,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024800424] [2022-09-16 12:02:28,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024800424] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:02:28,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117883557] [2022-09-16 12:02:28,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:02:28,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:02:28,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:02:28,064 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 12:02:28,065 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 12:02:28,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:02:28,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 10 conjunts are in the unsatisfiable core [2022-09-16 12:02:28,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:02:28,428 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 12:02:28,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:02:28,731 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 12:02:28,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117883557] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:02:28,731 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:02:28,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 23 [2022-09-16 12:02:28,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155172970] [2022-09-16 12:02:28,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:02:28,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 12:02:28,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:02:28,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 12:02:28,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2022-09-16 12:02:28,735 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 253 [2022-09-16 12:02:28,737 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 277 transitions, 918 flow. Second operand has 23 states, 23 states have (on average 166.3913043478261) internal successors, (3827), 23 states have internal predecessors, (3827), 0 states have call successors, (0), 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 12:02:28,738 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:02:28,738 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 253 [2022-09-16 12:02:28,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:02:47,208 INFO L130 PetriNetUnfolder]: 47735/98716 cut-off events. [2022-09-16 12:02:47,208 INFO L131 PetriNetUnfolder]: For 36099/36195 co-relation queries the response was YES. [2022-09-16 12:02:48,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214881 conditions, 98716 events. 47735/98716 cut-off events. For 36099/36195 co-relation queries the response was YES. Maximal size of possible extension queue 2317. Compared 1145663 event pairs, 13272 based on Foata normal form. 531/81237 useless extension candidates. Maximal degree in co-relation 133795. Up to 15122 conditions per place. [2022-09-16 12:02:48,814 INFO L137 encePairwiseOnDemand]: 219/253 looper letters, 407 selfloop transitions, 92 changer transitions 0/640 dead transitions. [2022-09-16 12:02:48,815 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 640 transitions, 3190 flow [2022-09-16 12:02:48,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-09-16 12:02:48,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-09-16 12:02:48,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 5849 transitions. [2022-09-16 12:02:48,822 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6799581492676122 [2022-09-16 12:02:48,822 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 5849 transitions. [2022-09-16 12:02:48,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 5849 transitions. [2022-09-16 12:02:48,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:02:48,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 5849 transitions. [2022-09-16 12:02:48,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 172.02941176470588) internal successors, (5849), 34 states have internal predecessors, (5849), 0 states have call successors, (0), 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 12:02:48,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 253.0) internal successors, (8855), 35 states have internal predecessors, (8855), 0 states have call successors, (0), 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 12:02:48,844 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 253.0) internal successors, (8855), 35 states have internal predecessors, (8855), 0 states have call successors, (0), 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 12:02:48,845 INFO L175 Difference]: Start difference. First operand has 257 places, 277 transitions, 918 flow. Second operand 34 states and 5849 transitions. [2022-09-16 12:02:48,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 640 transitions, 3190 flow [2022-09-16 12:02:49,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 640 transitions, 3176 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 12:02:49,515 INFO L231 Difference]: Finished difference. Result has 295 places, 328 transitions, 1438 flow [2022-09-16 12:02:49,516 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=904, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=1438, PETRI_PLACES=295, PETRI_TRANSITIONS=328} [2022-09-16 12:02:49,516 INFO L287 CegarLoopForPetriNet]: 220 programPoint places, 75 predicate places. [2022-09-16 12:02:49,516 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 328 transitions, 1438 flow [2022-09-16 12:02:49,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 166.3913043478261) internal successors, (3827), 23 states have internal predecessors, (3827), 0 states have call successors, (0), 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 12:02:49,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:02:49,518 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:02:49,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-09-16 12:02:49,727 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 12:02:49,728 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-09-16 12:02:49,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:02:49,728 INFO L85 PathProgramCache]: Analyzing trace with hash 592819626, now seen corresponding path program 1 times [2022-09-16 12:02:49,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:02:49,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035601724] [2022-09-16 12:02:49,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:02:49,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:02:49,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:02:49,786 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-09-16 12:02:49,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:02:49,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035601724] [2022-09-16 12:02:49,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035601724] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:02:49,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:02:49,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:02:49,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638589223] [2022-09-16 12:02:49,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:02:49,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:02:49,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:02:49,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:02:49,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:02:49,790 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 253 [2022-09-16 12:02:49,791 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 328 transitions, 1438 flow. Second operand has 4 states, 4 states have (on average 222.25) internal successors, (889), 4 states have internal predecessors, (889), 0 states have call successors, (0), 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 12:02:49,791 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:02:49,791 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 253 [2022-09-16 12:02:49,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:02:52,900 INFO L130 PetriNetUnfolder]: 4813/14407 cut-off events. [2022-09-16 12:02:52,901 INFO L131 PetriNetUnfolder]: For 5285/5574 co-relation queries the response was YES. [2022-09-16 12:02:53,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29037 conditions, 14407 events. 4813/14407 cut-off events. For 5285/5574 co-relation queries the response was YES. Maximal size of possible extension queue 863. Compared 166247 event pairs, 1606 based on Foata normal form. 121/12351 useless extension candidates. Maximal degree in co-relation 23838. Up to 3026 conditions per place. [2022-09-16 12:02:53,120 INFO L137 encePairwiseOnDemand]: 247/253 looper letters, 24 selfloop transitions, 12 changer transitions 0/340 dead transitions. [2022-09-16 12:02:53,120 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 340 transitions, 1542 flow [2022-09-16 12:02:53,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:02:53,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:02:53,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1125 transitions. [2022-09-16 12:02:53,125 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8893280632411067 [2022-09-16 12:02:53,125 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1125 transitions. [2022-09-16 12:02:53,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1125 transitions. [2022-09-16 12:02:53,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:02:53,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1125 transitions. [2022-09-16 12:02:53,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 225.0) internal successors, (1125), 5 states have internal predecessors, (1125), 0 states have call successors, (0), 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 12:02:53,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 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 12:02:53,142 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 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 12:02:53,142 INFO L175 Difference]: Start difference. First operand has 295 places, 328 transitions, 1438 flow. Second operand 5 states and 1125 transitions. [2022-09-16 12:02:53,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 340 transitions, 1542 flow [2022-09-16 12:02:53,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 340 transitions, 1475 flow, removed 5 selfloop flow, removed 10 redundant places. [2022-09-16 12:02:53,221 INFO L231 Difference]: Finished difference. Result has 289 places, 328 transitions, 1401 flow [2022-09-16 12:02:53,222 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=1365, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1401, PETRI_PLACES=289, PETRI_TRANSITIONS=328} [2022-09-16 12:02:53,223 INFO L287 CegarLoopForPetriNet]: 220 programPoint places, 69 predicate places. [2022-09-16 12:02:53,223 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 328 transitions, 1401 flow [2022-09-16 12:02:53,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 222.25) internal successors, (889), 4 states have internal predecessors, (889), 0 states have call successors, (0), 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 12:02:53,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:02:53,223 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:02:53,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-09-16 12:02:53,224 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-09-16 12:02:53,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:02:53,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1282483201, now seen corresponding path program 1 times [2022-09-16 12:02:53,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:02:53,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259210938] [2022-09-16 12:02:53,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:02:53,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:02:53,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:02:53,276 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-16 12:02:53,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:02:53,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259210938] [2022-09-16 12:02:53,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259210938] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:02:53,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637530938] [2022-09-16 12:02:53,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:02:53,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:02:53,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:02:53,279 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 12:02:53,282 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 12:02:53,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:02:53,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 10 conjunts are in the unsatisfiable core [2022-09-16 12:02:53,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:02:53,636 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 12:02:53,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:02:53,909 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 12:02:53,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637530938] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:02:53,909 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:02:53,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 23 [2022-09-16 12:02:53,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311854605] [2022-09-16 12:02:53,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:02:53,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 12:02:53,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:02:53,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 12:02:53,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2022-09-16 12:02:53,913 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 253 [2022-09-16 12:02:53,916 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 328 transitions, 1401 flow. Second operand has 23 states, 23 states have (on average 167.56521739130434) internal successors, (3854), 23 states have internal predecessors, (3854), 0 states have call successors, (0), 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 12:02:53,916 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:02:53,916 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 253 [2022-09-16 12:02:53,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:03:15,432 INFO L130 PetriNetUnfolder]: 54400/100301 cut-off events. [2022-09-16 12:03:15,432 INFO L131 PetriNetUnfolder]: For 88445/95605 co-relation queries the response was YES. [2022-09-16 12:03:16,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261597 conditions, 100301 events. 54400/100301 cut-off events. For 88445/95605 co-relation queries the response was YES. Maximal size of possible extension queue 3790. Compared 1128700 event pairs, 14517 based on Foata normal form. 7870/92952 useless extension candidates. Maximal degree in co-relation 197055. Up to 21487 conditions per place. [2022-09-16 12:03:17,300 INFO L137 encePairwiseOnDemand]: 219/253 looper letters, 413 selfloop transitions, 92 changer transitions 21/679 dead transitions. [2022-09-16 12:03:17,301 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 679 transitions, 4009 flow [2022-09-16 12:03:17,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-09-16 12:03:17,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-09-16 12:03:17,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 5856 transitions. [2022-09-16 12:03:17,307 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6807719135084864 [2022-09-16 12:03:17,307 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 5856 transitions. [2022-09-16 12:03:17,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 5856 transitions. [2022-09-16 12:03:17,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:03:17,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 5856 transitions. [2022-09-16 12:03:17,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 172.23529411764707) internal successors, (5856), 34 states have internal predecessors, (5856), 0 states have call successors, (0), 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 12:03:17,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 253.0) internal successors, (8855), 35 states have internal predecessors, (8855), 0 states have call successors, (0), 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 12:03:17,418 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 253.0) internal successors, (8855), 35 states have internal predecessors, (8855), 0 states have call successors, (0), 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 12:03:17,418 INFO L175 Difference]: Start difference. First operand has 289 places, 328 transitions, 1401 flow. Second operand 34 states and 5856 transitions. [2022-09-16 12:03:17,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 679 transitions, 4009 flow [2022-09-16 12:03:18,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 679 transitions, 3951 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 12:03:18,088 INFO L231 Difference]: Finished difference. Result has 325 places, 346 transitions, 1704 flow [2022-09-16 12:03:18,088 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=1383, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=1704, PETRI_PLACES=325, PETRI_TRANSITIONS=346} [2022-09-16 12:03:18,089 INFO L287 CegarLoopForPetriNet]: 220 programPoint places, 105 predicate places. [2022-09-16 12:03:18,089 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 346 transitions, 1704 flow [2022-09-16 12:03:18,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 167.56521739130434) internal successors, (3854), 23 states have internal predecessors, (3854), 0 states have call successors, (0), 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 12:03:18,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:03:18,090 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:03:18,111 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 12:03:18,290 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,SelfDestructingSolverStorable15 [2022-09-16 12:03:18,291 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-09-16 12:03:18,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:03:18,292 INFO L85 PathProgramCache]: Analyzing trace with hash -815646372, now seen corresponding path program 2 times [2022-09-16 12:03:18,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:03:18,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849750311] [2022-09-16 12:03:18,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:03:18,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:03:18,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:03:18,408 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-09-16 12:03:18,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:03:18,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849750311] [2022-09-16 12:03:18,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849750311] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:03:18,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835335688] [2022-09-16 12:03:18,409 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 12:03:18,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:03:18,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:03:18,410 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 12:03:18,411 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 12:03:18,524 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 12:03:18,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 12:03:18,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-16 12:03:18,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:03:18,700 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-09-16 12:03:18,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:03:18,881 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-09-16 12:03:18,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835335688] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:03:18,881 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:03:18,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2022-09-16 12:03:18,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399589527] [2022-09-16 12:03:18,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:03:18,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 12:03:18,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:03:18,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 12:03:18,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-09-16 12:03:18,885 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 253 [2022-09-16 12:03:18,887 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 346 transitions, 1704 flow. Second operand has 12 states, 12 states have (on average 173.66666666666666) internal successors, (2084), 12 states have internal predecessors, (2084), 0 states have call successors, (0), 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 12:03:18,887 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:03:18,887 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 253 [2022-09-16 12:03:18,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:03:33,993 INFO L130 PetriNetUnfolder]: 29496/75276 cut-off events. [2022-09-16 12:03:33,994 INFO L131 PetriNetUnfolder]: For 74759/80459 co-relation queries the response was YES. [2022-09-16 12:03:35,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189312 conditions, 75276 events. 29496/75276 cut-off events. For 74759/80459 co-relation queries the response was YES. Maximal size of possible extension queue 2201. Compared 964150 event pairs, 11581 based on Foata normal form. 6439/75321 useless extension candidates. Maximal degree in co-relation 145343. Up to 11735 conditions per place. [2022-09-16 12:03:35,318 INFO L137 encePairwiseOnDemand]: 221/253 looper letters, 156 selfloop transitions, 39 changer transitions 167/513 dead transitions. [2022-09-16 12:03:35,318 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 513 transitions, 3084 flow [2022-09-16 12:03:35,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-09-16 12:03:35,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-09-16 12:03:35,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3840 transitions. [2022-09-16 12:03:35,322 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.689902982393101 [2022-09-16 12:03:35,323 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3840 transitions. [2022-09-16 12:03:35,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3840 transitions. [2022-09-16 12:03:35,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:03:35,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3840 transitions. [2022-09-16 12:03:35,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 174.54545454545453) internal successors, (3840), 22 states have internal predecessors, (3840), 0 states have call successors, (0), 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 12:03:35,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 253.0) internal successors, (5819), 23 states have internal predecessors, (5819), 0 states have call successors, (0), 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 12:03:35,334 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 253.0) internal successors, (5819), 23 states have internal predecessors, (5819), 0 states have call successors, (0), 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 12:03:35,334 INFO L175 Difference]: Start difference. First operand has 325 places, 346 transitions, 1704 flow. Second operand 22 states and 3840 transitions. [2022-09-16 12:03:35,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 513 transitions, 3084 flow [2022-09-16 12:03:35,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 513 transitions, 2964 flow, removed 2 selfloop flow, removed 17 redundant places. [2022-09-16 12:03:35,983 INFO L231 Difference]: Finished difference. Result has 332 places, 291 transitions, 1360 flow [2022-09-16 12:03:35,983 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=1584, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1360, PETRI_PLACES=332, PETRI_TRANSITIONS=291} [2022-09-16 12:03:35,984 INFO L287 CegarLoopForPetriNet]: 220 programPoint places, 112 predicate places. [2022-09-16 12:03:35,984 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 291 transitions, 1360 flow [2022-09-16 12:03:35,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 173.66666666666666) internal successors, (2084), 12 states have internal predecessors, (2084), 0 states have call successors, (0), 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 12:03:35,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:03:35,985 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:03:36,013 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 12:03:36,213 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,SelfDestructingSolverStorable16 [2022-09-16 12:03:36,214 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-09-16 12:03:36,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:03:36,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1682475044, now seen corresponding path program 1 times [2022-09-16 12:03:36,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:03:36,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204851639] [2022-09-16 12:03:36,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:03:36,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:03:36,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:03:36,271 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-09-16 12:03:36,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:03:36,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204851639] [2022-09-16 12:03:36,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204851639] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:03:36,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356566895] [2022-09-16 12:03:36,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:03:36,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:03:36,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:03:36,273 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:03:36,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-09-16 12:03:36,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:03:36,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 12:03:36,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:03:36,498 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-09-16 12:03:36,499 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 12:03:36,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356566895] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:03:36,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 12:03:36,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 12:03:36,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081236336] [2022-09-16 12:03:36,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:03:36,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 12:03:36,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:03:36,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 12:03:36,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 12:03:36,501 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 253 [2022-09-16 12:03:36,502 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 291 transitions, 1360 flow. Second operand has 6 states, 6 states have (on average 219.66666666666666) internal successors, (1318), 6 states have internal predecessors, (1318), 0 states have call successors, (0), 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 12:03:36,502 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:03:36,502 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 253 [2022-09-16 12:03:36,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:03:39,893 INFO L130 PetriNetUnfolder]: 6021/16843 cut-off events. [2022-09-16 12:03:39,893 INFO L131 PetriNetUnfolder]: For 17809/21489 co-relation queries the response was YES. [2022-09-16 12:03:40,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43822 conditions, 16843 events. 6021/16843 cut-off events. For 17809/21489 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 185361 event pairs, 940 based on Foata normal form. 3870/20283 useless extension candidates. Maximal degree in co-relation 34716. Up to 3725 conditions per place. [2022-09-16 12:03:40,167 INFO L137 encePairwiseOnDemand]: 248/253 looper letters, 57 selfloop transitions, 8 changer transitions 0/326 dead transitions. [2022-09-16 12:03:40,167 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 326 transitions, 1636 flow [2022-09-16 12:03:40,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 12:03:40,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 12:03:40,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1569 transitions. [2022-09-16 12:03:40,169 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.885940146809712 [2022-09-16 12:03:40,169 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1569 transitions. [2022-09-16 12:03:40,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1569 transitions. [2022-09-16 12:03:40,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:03:40,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1569 transitions. [2022-09-16 12:03:40,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 224.14285714285714) internal successors, (1569), 7 states have internal predecessors, (1569), 0 states have call successors, (0), 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 12:03:40,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 253.0) internal successors, (2024), 8 states have internal predecessors, (2024), 0 states have call successors, (0), 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 12:03:40,173 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 253.0) internal successors, (2024), 8 states have internal predecessors, (2024), 0 states have call successors, (0), 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 12:03:40,173 INFO L175 Difference]: Start difference. First operand has 332 places, 291 transitions, 1360 flow. Second operand 7 states and 1569 transitions. [2022-09-16 12:03:40,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 326 transitions, 1636 flow [2022-09-16 12:03:40,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 326 transitions, 1511 flow, removed 11 selfloop flow, removed 20 redundant places. [2022-09-16 12:03:40,222 INFO L231 Difference]: Finished difference. Result has 284 places, 289 transitions, 1241 flow [2022-09-16 12:03:40,222 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=1225, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1241, PETRI_PLACES=284, PETRI_TRANSITIONS=289} [2022-09-16 12:03:40,222 INFO L287 CegarLoopForPetriNet]: 220 programPoint places, 64 predicate places. [2022-09-16 12:03:40,223 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 289 transitions, 1241 flow [2022-09-16 12:03:40,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 219.66666666666666) internal successors, (1318), 6 states have internal predecessors, (1318), 0 states have call successors, (0), 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 12:03:40,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:03:40,223 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:03:40,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-09-16 12:03:40,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-09-16 12:03:40,424 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-09-16 12:03:40,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:03:40,424 INFO L85 PathProgramCache]: Analyzing trace with hash 964586437, now seen corresponding path program 1 times [2022-09-16 12:03:40,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:03:40,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808032400] [2022-09-16 12:03:40,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:03:40,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:03:40,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:03:40,600 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-09-16 12:03:40,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:03:40,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808032400] [2022-09-16 12:03:40,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808032400] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:03:40,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199647918] [2022-09-16 12:03:40,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:03:40,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:03:40,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:03:40,601 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:03:40,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-09-16 12:03:40,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:03:40,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 12:03:40,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:03:40,762 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-09-16 12:03:40,762 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 12:03:40,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199647918] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:03:40,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 12:03:40,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 12:03:40,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251809122] [2022-09-16 12:03:40,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:03:40,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 12:03:40,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:03:40,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 12:03:40,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 12:03:40,766 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 253 [2022-09-16 12:03:40,766 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 289 transitions, 1241 flow. Second operand has 6 states, 6 states have (on average 221.0) internal successors, (1326), 6 states have internal predecessors, (1326), 0 states have call successors, (0), 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 12:03:40,767 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:03:40,767 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 253 [2022-09-16 12:03:40,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:03:43,320 INFO L130 PetriNetUnfolder]: 6211/13553 cut-off events. [2022-09-16 12:03:43,321 INFO L131 PetriNetUnfolder]: For 14664/18004 co-relation queries the response was YES. [2022-09-16 12:03:43,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34008 conditions, 13553 events. 6211/13553 cut-off events. For 14664/18004 co-relation queries the response was YES. Maximal size of possible extension queue 1146. Compared 146750 event pairs, 540 based on Foata normal form. 3580/15433 useless extension candidates. Maximal degree in co-relation 24639. Up to 3540 conditions per place. [2022-09-16 12:03:43,502 INFO L137 encePairwiseOnDemand]: 248/253 looper letters, 49 selfloop transitions, 8 changer transitions 0/317 dead transitions. [2022-09-16 12:03:43,502 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 317 transitions, 1476 flow [2022-09-16 12:03:43,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 12:03:43,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 12:03:43,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1568 transitions. [2022-09-16 12:03:43,504 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8853754940711462 [2022-09-16 12:03:43,504 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1568 transitions. [2022-09-16 12:03:43,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1568 transitions. [2022-09-16 12:03:43,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:03:43,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1568 transitions. [2022-09-16 12:03:43,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 224.0) internal successors, (1568), 7 states have internal predecessors, (1568), 0 states have call successors, (0), 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 12:03:43,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 253.0) internal successors, (2024), 8 states have internal predecessors, (2024), 0 states have call successors, (0), 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 12:03:43,509 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 253.0) internal successors, (2024), 8 states have internal predecessors, (2024), 0 states have call successors, (0), 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 12:03:43,510 INFO L175 Difference]: Start difference. First operand has 284 places, 289 transitions, 1241 flow. Second operand 7 states and 1568 transitions. [2022-09-16 12:03:43,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 317 transitions, 1476 flow [2022-09-16 12:03:43,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 317 transitions, 1419 flow, removed 3 selfloop flow, removed 7 redundant places. [2022-09-16 12:03:43,547 INFO L231 Difference]: Finished difference. Result has 282 places, 287 transitions, 1186 flow [2022-09-16 12:03:43,547 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=1170, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1186, PETRI_PLACES=282, PETRI_TRANSITIONS=287} [2022-09-16 12:03:43,549 INFO L287 CegarLoopForPetriNet]: 220 programPoint places, 62 predicate places. [2022-09-16 12:03:43,549 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 287 transitions, 1186 flow [2022-09-16 12:03:43,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 221.0) internal successors, (1326), 6 states have internal predecessors, (1326), 0 states have call successors, (0), 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 12:03:43,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:03:43,566 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:03:43,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-09-16 12:03:43,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:03:43,792 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-09-16 12:03:43,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:03:43,792 INFO L85 PathProgramCache]: Analyzing trace with hash -637280058, now seen corresponding path program 2 times [2022-09-16 12:03:43,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:03:43,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070972068] [2022-09-16 12:03:43,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:03:43,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:03:43,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:03:43,961 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 18 proven. 22 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-09-16 12:03:43,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:03:43,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070972068] [2022-09-16 12:03:43,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070972068] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:03:43,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076529196] [2022-09-16 12:03:43,962 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 12:03:43,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:03:43,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:03:43,963 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:03:43,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-09-16 12:03:44,075 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 12:03:44,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 12:03:44,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 12:03:44,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:03:44,283 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-09-16 12:03:44,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:03:44,483 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-09-16 12:03:44,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076529196] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:03:44,483 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:03:44,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 19 [2022-09-16 12:03:44,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804854126] [2022-09-16 12:03:44,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:03:44,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-16 12:03:44,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:03:44,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-16 12:03:44,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-09-16 12:03:44,487 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 253 [2022-09-16 12:03:44,488 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 287 transitions, 1186 flow. Second operand has 19 states, 19 states have (on average 164.52631578947367) internal successors, (3126), 19 states have internal predecessors, (3126), 0 states have call successors, (0), 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 12:03:44,488 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:03:44,489 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 253 [2022-09-16 12:03:44,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:04:10,876 INFO L130 PetriNetUnfolder]: 61426/126974 cut-off events. [2022-09-16 12:04:10,876 INFO L131 PetriNetUnfolder]: For 87889/109255 co-relation queries the response was YES. [2022-09-16 12:04:12,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326860 conditions, 126974 events. 61426/126974 cut-off events. For 87889/109255 co-relation queries the response was YES. Maximal size of possible extension queue 3396. Compared 1553337 event pairs, 2926 based on Foata normal form. 22563/146635 useless extension candidates. Maximal degree in co-relation 237395. Up to 15440 conditions per place. [2022-09-16 12:04:12,871 INFO L137 encePairwiseOnDemand]: 219/253 looper letters, 335 selfloop transitions, 116 changer transitions 50/638 dead transitions. [2022-09-16 12:04:12,872 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 638 transitions, 3745 flow [2022-09-16 12:04:12,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-09-16 12:04:12,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-09-16 12:04:12,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6299 transitions. [2022-09-16 12:04:12,877 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.655190347410027 [2022-09-16 12:04:12,877 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6299 transitions. [2022-09-16 12:04:12,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6299 transitions. [2022-09-16 12:04:12,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:04:12,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6299 transitions. [2022-09-16 12:04:12,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 165.76315789473685) internal successors, (6299), 38 states have internal predecessors, (6299), 0 states have call successors, (0), 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 12:04:12,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 253.0) internal successors, (9867), 39 states have internal predecessors, (9867), 0 states have call successors, (0), 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 12:04:12,890 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 253.0) internal successors, (9867), 39 states have internal predecessors, (9867), 0 states have call successors, (0), 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 12:04:12,891 INFO L175 Difference]: Start difference. First operand has 282 places, 287 transitions, 1186 flow. Second operand 38 states and 6299 transitions. [2022-09-16 12:04:12,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 638 transitions, 3745 flow [2022-09-16 12:04:14,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 638 transitions, 3730 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-09-16 12:04:14,471 INFO L231 Difference]: Finished difference. Result has 319 places, 343 transitions, 1958 flow [2022-09-16 12:04:14,471 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=1165, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=1958, PETRI_PLACES=319, PETRI_TRANSITIONS=343} [2022-09-16 12:04:14,472 INFO L287 CegarLoopForPetriNet]: 220 programPoint places, 99 predicate places. [2022-09-16 12:04:14,472 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 343 transitions, 1958 flow [2022-09-16 12:04:14,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 164.52631578947367) internal successors, (3126), 19 states have internal predecessors, (3126), 0 states have call successors, (0), 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 12:04:14,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:04:14,472 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:04:14,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-09-16 12:04:14,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:04:14,679 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-09-16 12:04:14,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:04:14,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1034149740, now seen corresponding path program 2 times [2022-09-16 12:04:14,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:04:14,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083465058] [2022-09-16 12:04:14,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:04:14,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:04:14,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:04:14,904 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 12 proven. 19 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-09-16 12:04:14,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:04:14,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083465058] [2022-09-16 12:04:14,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083465058] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:04:14,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732083128] [2022-09-16 12:04:14,904 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 12:04:14,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:04:14,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:04:14,917 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:04:14,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-09-16 12:04:15,034 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 12:04:15,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 12:04:15,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 12:04:15,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:04:15,246 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-09-16 12:04:15,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:04:15,439 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-09-16 12:04:15,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732083128] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:04:15,439 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:04:15,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 19 [2022-09-16 12:04:15,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325706286] [2022-09-16 12:04:15,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:04:15,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-16 12:04:15,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:04:15,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-16 12:04:15,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-09-16 12:04:15,442 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 253 [2022-09-16 12:04:15,443 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 343 transitions, 1958 flow. Second operand has 19 states, 19 states have (on average 165.73684210526315) internal successors, (3149), 19 states have internal predecessors, (3149), 0 states have call successors, (0), 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 12:04:15,443 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:04:15,443 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 253 [2022-09-16 12:04:15,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:04:32,922 INFO L130 PetriNetUnfolder]: 46778/83207 cut-off events. [2022-09-16 12:04:32,922 INFO L131 PetriNetUnfolder]: For 94445/116872 co-relation queries the response was YES. [2022-09-16 12:04:33,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252418 conditions, 83207 events. 46778/83207 cut-off events. For 94445/116872 co-relation queries the response was YES. Maximal size of possible extension queue 3340. Compared 905062 event pairs, 4671 based on Foata normal form. 23555/101703 useless extension candidates. Maximal degree in co-relation 189105. Up to 15936 conditions per place. [2022-09-16 12:04:33,956 INFO L137 encePairwiseOnDemand]: 220/253 looper letters, 0 selfloop transitions, 0 changer transitions 567/567 dead transitions. [2022-09-16 12:04:33,956 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 567 transitions, 3844 flow [2022-09-16 12:04:33,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-09-16 12:04:33,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-09-16 12:04:33,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 5650 transitions. [2022-09-16 12:04:33,961 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6568239944199024 [2022-09-16 12:04:33,961 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 5650 transitions. [2022-09-16 12:04:33,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 5650 transitions. [2022-09-16 12:04:33,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:04:33,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 5650 transitions. [2022-09-16 12:04:33,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 166.1764705882353) internal successors, (5650), 34 states have internal predecessors, (5650), 0 states have call successors, (0), 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 12:04:33,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 253.0) internal successors, (8855), 35 states have internal predecessors, (8855), 0 states have call successors, (0), 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 12:04:33,971 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 253.0) internal successors, (8855), 35 states have internal predecessors, (8855), 0 states have call successors, (0), 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 12:04:33,971 INFO L175 Difference]: Start difference. First operand has 319 places, 343 transitions, 1958 flow. Second operand 34 states and 5650 transitions. [2022-09-16 12:04:33,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 567 transitions, 3844 flow [2022-09-16 12:04:35,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 567 transitions, 3783 flow, removed 6 selfloop flow, removed 9 redundant places. [2022-09-16 12:04:35,106 INFO L231 Difference]: Finished difference. Result has 336 places, 0 transitions, 0 flow [2022-09-16 12:04:35,106 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=1891, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=0, PETRI_PLACES=336, PETRI_TRANSITIONS=0} [2022-09-16 12:04:35,106 INFO L287 CegarLoopForPetriNet]: 220 programPoint places, 116 predicate places. [2022-09-16 12:04:35,107 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 0 transitions, 0 flow [2022-09-16 12:04:35,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 165.73684210526315) internal successors, (3149), 19 states have internal predecessors, (3149), 0 states have call successors, (0), 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 12:04:35,109 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 25 remaining) [2022-09-16 12:04:35,110 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2022-09-16 12:04:35,110 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2022-09-16 12:04:35,110 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2022-09-16 12:04:35,110 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2022-09-16 12:04:35,110 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2022-09-16 12:04:35,110 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2022-09-16 12:04:35,110 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2022-09-16 12:04:35,110 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2022-09-16 12:04:35,110 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2022-09-16 12:04:35,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2022-09-16 12:04:35,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2022-09-16 12:04:35,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2022-09-16 12:04:35,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2022-09-16 12:04:35,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 25 remaining) [2022-09-16 12:04:35,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 25 remaining) [2022-09-16 12:04:35,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 25 remaining) [2022-09-16 12:04:35,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2022-09-16 12:04:35,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2022-09-16 12:04:35,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2022-09-16 12:04:35,112 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2022-09-16 12:04:35,112 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2022-09-16 12:04:35,112 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2022-09-16 12:04:35,112 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2022-09-16 12:04:35,112 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2022-09-16 12:04:35,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-09-16 12:04:35,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:04:35,313 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:04:35,318 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-16 12:04:35,318 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-16 12:04:35,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 12:04:35 BasicIcfg [2022-09-16 12:04:35,322 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-16 12:04:35,322 INFO L158 Benchmark]: Toolchain (without parser) took 160888.03ms. Allocated memory was 190.8MB in the beginning and 7.9GB in the end (delta: 7.7GB). Free memory was 133.5MB in the beginning and 5.2GB in the end (delta: -5.0GB). Peak memory consumption was 2.9GB. Max. memory is 8.0GB. [2022-09-16 12:04:35,322 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 190.8MB. Free memory was 150.7MB in the beginning and 150.6MB in the end (delta: 78.2kB). There was no memory consumed. Max. memory is 8.0GB. [2022-09-16 12:04:35,323 INFO L158 Benchmark]: CACSL2BoogieTranslator took 373.02ms. Allocated memory is still 190.8MB. Free memory was 133.3MB in the beginning and 164.4MB in the end (delta: -31.1MB). Peak memory consumption was 14.2MB. Max. memory is 8.0GB. [2022-09-16 12:04:35,323 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.68ms. Allocated memory is still 190.8MB. Free memory was 164.4MB in the beginning and 162.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-16 12:04:35,323 INFO L158 Benchmark]: Boogie Preprocessor took 28.13ms. Allocated memory is still 190.8MB. Free memory was 162.3MB in the beginning and 160.7MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-09-16 12:04:35,323 INFO L158 Benchmark]: RCFGBuilder took 556.84ms. Allocated memory is still 190.8MB. Free memory was 160.5MB in the beginning and 137.9MB in the end (delta: 22.6MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2022-09-16 12:04:35,323 INFO L158 Benchmark]: TraceAbstraction took 159869.60ms. Allocated memory was 190.8MB in the beginning and 7.9GB in the end (delta: 7.7GB). Free memory was 137.5MB in the beginning and 5.2GB in the end (delta: -5.0GB). Peak memory consumption was 2.9GB. Max. memory is 8.0GB. [2022-09-16 12:04:35,324 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 190.8MB. Free memory was 150.7MB in the beginning and 150.6MB in the end (delta: 78.2kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 373.02ms. Allocated memory is still 190.8MB. Free memory was 133.3MB in the beginning and 164.4MB in the end (delta: -31.1MB). Peak memory consumption was 14.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 53.68ms. Allocated memory is still 190.8MB. Free memory was 164.4MB in the beginning and 162.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.13ms. Allocated memory is still 190.8MB. Free memory was 162.3MB in the beginning and 160.7MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 556.84ms. Allocated memory is still 190.8MB. Free memory was 160.5MB in the beginning and 137.9MB in the end (delta: 22.6MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * TraceAbstraction took 159869.60ms. Allocated memory was 190.8MB in the beginning and 7.9GB in the end (delta: 7.7GB). Free memory was 137.5MB in the beginning and 5.2GB in the end (delta: -5.0GB). Peak memory consumption was 2.9GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 49]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 49]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: 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: 78]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 78]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: 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, 285 locations, 25 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: 159.7s, OverallIterations: 21, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 149.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6985 SdHoareTripleChecker+Valid, 4.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6985 mSDsluCounter, 1095 SdHoareTripleChecker+Invalid, 3.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2404 mSDsCounter, 910 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7316 IncrementalHoareTripleChecker+Invalid, 8226 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 910 mSolverCounterUnsat, 206 mSDtfsCounter, 7316 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3639 GetRequests, 3229 SyntacticMatches, 15 SemanticMatches, 395 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2938 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1958occurred in iteration=20, InterpolantAutomatonStates: 302, 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: 0.3s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 5005 NumberOfCodeBlocks, 4790 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 6130 ConstructedInterpolants, 0 QuantifiedInterpolants, 12200 SizeOfPredicates, 65 NumberOfNonLiveVariables, 4508 ConjunctsInSsa, 86 ConjunctsInUnsatCore, 44 InterpolantComputations, 13 PerfectInterpolantSequences, 663/948 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 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-09-16 12:04:35,356 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...