/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/parallel-parallel-sum-equiv.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:51:15,658 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:51:15,659 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:51:15,694 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:51:15,694 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:51:15,696 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:51:15,698 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:51:15,700 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:51:15,701 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:51:15,704 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:51:15,704 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:51:15,705 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:51:15,705 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:51:15,707 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:51:15,708 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:51:15,709 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:51:15,710 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:51:15,711 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:51:15,712 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:51:15,713 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:51:15,713 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:51:15,714 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:51:15,715 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:51:15,715 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:51:15,718 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-09-16 11:51:15,722 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:51:15,723 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:51:15,723 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:51:15,726 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-09-16 11:51:15,752 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:51:15,752 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:51:15,753 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:51:15,753 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:51:15,754 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:51:15,754 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:51:15,754 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:51:15,754 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:51:15,754 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:51:15,754 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:51:15,755 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:51:15,755 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:51:15,755 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:51:15,755 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:51:15,755 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:51:15,755 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:51:15,755 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:51:15,755 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:51:15,755 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:51:15,755 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:51:15,756 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:51:15,756 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:51:15,756 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:51:15,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:51:15,756 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:51:15,756 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:51:15,757 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:51:15,757 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:51:15,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:51:15,757 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:51:15,757 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:51:15,757 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:51:15,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:51:15,950 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:51:15,952 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:51:15,953 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:51:15,953 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:51:15,954 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.wvr.c [2022-09-16 11:51:15,993 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/799e83a9f/2601510ee95347688931218b3fe57909/FLAGbf98aecaf [2022-09-16 11:51:16,362 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:51:16,362 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.wvr.c [2022-09-16 11:51:16,367 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/799e83a9f/2601510ee95347688931218b3fe57909/FLAGbf98aecaf [2022-09-16 11:51:16,377 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/799e83a9f/2601510ee95347688931218b3fe57909 [2022-09-16 11:51:16,379 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:51:16,379 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:51:16,380 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:51:16,380 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:51:16,382 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:51:16,383 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:51:16" (1/1) ... [2022-09-16 11:51:16,383 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ddfbcd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:51:16, skipping insertion in model container [2022-09-16 11:51:16,383 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:51:16" (1/1) ... [2022-09-16 11:51:16,388 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:51:16,401 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:51:16,577 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/parallel-parallel-sum-equiv.wvr.c[3770,3783] [2022-09-16 11:51:16,582 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:51:16,589 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:51:16,621 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/parallel-parallel-sum-equiv.wvr.c[3770,3783] [2022-09-16 11:51:16,623 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:51:16,632 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:51:16,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:51:16 WrapperNode [2022-09-16 11:51:16,633 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:51:16,634 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:51:16,634 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:51:16,634 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:51:16,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:51:16" (1/1) ... [2022-09-16 11:51:16,652 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:51:16" (1/1) ... [2022-09-16 11:51:16,686 INFO L138 Inliner]: procedures = 27, calls = 73, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 297 [2022-09-16 11:51:16,686 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:51:16,687 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:51:16,687 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:51:16,687 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:51:16,693 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:51:16" (1/1) ... [2022-09-16 11:51:16,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:51:16" (1/1) ... [2022-09-16 11:51:16,703 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:51:16" (1/1) ... [2022-09-16 11:51:16,703 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:51:16" (1/1) ... [2022-09-16 11:51:16,708 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:51:16" (1/1) ... [2022-09-16 11:51:16,712 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:51:16" (1/1) ... [2022-09-16 11:51:16,716 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:51:16" (1/1) ... [2022-09-16 11:51:16,718 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:51:16,719 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:51:16,719 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:51:16,719 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:51:16,724 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:51:16" (1/1) ... [2022-09-16 11:51:16,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:51:16,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:51:16,754 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-09-16 11:51:16,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-09-16 11:51:16,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:51:16,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:51:16,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:51:16,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:51:16,781 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:51:16,781 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:51:16,781 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:51:16,781 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:51:16,781 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-16 11:51:16,781 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-16 11:51:16,781 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-09-16 11:51:16,782 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-09-16 11:51:16,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:51:16,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-16 11:51:16,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-16 11:51:16,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-16 11:51:16,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:51:16,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:51:16,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:51:16,784 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-16 11:51:16,922 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:51:16,923 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:51:17,253 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:51:17,587 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:51:17,587 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-09-16 11:51:17,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:51:17 BoogieIcfgContainer [2022-09-16 11:51:17,590 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:51:17,592 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:51:17,592 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:51:17,595 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:51:17,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:51:16" (1/3) ... [2022-09-16 11:51:17,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49cc3839 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:51:17, skipping insertion in model container [2022-09-16 11:51:17,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:51:16" (2/3) ... [2022-09-16 11:51:17,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49cc3839 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:51:17, skipping insertion in model container [2022-09-16 11:51:17,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:51:17" (3/3) ... [2022-09-16 11:51:17,598 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-equiv.wvr.c [2022-09-16 11:51:17,609 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:51:17,609 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2022-09-16 11:51:17,609 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:51:17,747 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2022-09-16 11:51:17,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 235 places, 236 transitions, 516 flow [2022-09-16 11:51:17,863 INFO L130 PetriNetUnfolder]: 14/221 cut-off events. [2022-09-16 11:51:17,863 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-09-16 11:51:17,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240 conditions, 221 events. 14/221 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 325 event pairs, 0 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 186. Up to 3 conditions per place. [2022-09-16 11:51:17,868 INFO L82 GeneralOperation]: Start removeDead. Operand has 235 places, 236 transitions, 516 flow [2022-09-16 11:51:17,883 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 202 places, 202 transitions, 431 flow [2022-09-16 11:51:17,889 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:51:17,894 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;@5d7c17dc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:51:17,894 INFO L358 AbstractCegarLoop]: Starting to check reachability of 58 error locations. [2022-09-16 11:51:17,900 INFO L130 PetriNetUnfolder]: 1/56 cut-off events. [2022-09-16 11:51:17,901 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:51:17,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:51:17,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:51:17,902 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-09-16 11:51:17,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:51:17,905 INFO L85 PathProgramCache]: Analyzing trace with hash 2109387708, now seen corresponding path program 1 times [2022-09-16 11:51:17,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:51:17,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855061789] [2022-09-16 11:51:17,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:51:17,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:51:18,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:51:18,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:51:18,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:51:18,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855061789] [2022-09-16 11:51:18,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855061789] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:51:18,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:51:18,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-16 11:51:18,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37142300] [2022-09-16 11:51:18,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:51:18,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:51:18,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:51:18,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:51:18,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:51:18,168 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 238 [2022-09-16 11:51:18,174 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 202 transitions, 431 flow. Second operand has 5 states, 5 states have (on average 154.4) internal successors, (772), 5 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:18,174 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:51:18,174 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 238 [2022-09-16 11:51:18,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:51:18,965 INFO L130 PetriNetUnfolder]: 1731/2933 cut-off events. [2022-09-16 11:51:18,966 INFO L131 PetriNetUnfolder]: For 471/471 co-relation queries the response was YES. [2022-09-16 11:51:18,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6066 conditions, 2933 events. 1731/2933 cut-off events. For 471/471 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 18145 event pairs, 1376 based on Foata normal form. 268/1671 useless extension candidates. Maximal degree in co-relation 5880. Up to 2585 conditions per place. [2022-09-16 11:51:19,000 INFO L137 encePairwiseOnDemand]: 216/238 looper letters, 48 selfloop transitions, 5 changer transitions 3/185 dead transitions. [2022-09-16 11:51:19,000 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 185 transitions, 509 flow [2022-09-16 11:51:19,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:51:19,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:51:19,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 838 transitions. [2022-09-16 11:51:19,018 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.704201680672269 [2022-09-16 11:51:19,019 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 838 transitions. [2022-09-16 11:51:19,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 838 transitions. [2022-09-16 11:51:19,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:51:19,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 838 transitions. [2022-09-16 11:51:19,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 167.6) internal successors, (838), 5 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:19,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 238.0) internal successors, (1428), 6 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:19,038 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 238.0) internal successors, (1428), 6 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:19,040 INFO L175 Difference]: Start difference. First operand has 202 places, 202 transitions, 431 flow. Second operand 5 states and 838 transitions. [2022-09-16 11:51:19,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 185 transitions, 509 flow [2022-09-16 11:51:19,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 185 transitions, 492 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-09-16 11:51:19,049 INFO L231 Difference]: Finished difference. Result has 189 places, 182 transitions, 384 flow [2022-09-16 11:51:19,051 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=384, PETRI_PLACES=189, PETRI_TRANSITIONS=182} [2022-09-16 11:51:19,054 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, -13 predicate places. [2022-09-16 11:51:19,054 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 182 transitions, 384 flow [2022-09-16 11:51:19,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 154.4) internal successors, (772), 5 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:19,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:51:19,056 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] [2022-09-16 11:51:19,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:51:19,056 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-09-16 11:51:19,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:51:19,057 INFO L85 PathProgramCache]: Analyzing trace with hash 966510475, now seen corresponding path program 1 times [2022-09-16 11:51:19,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:51:19,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515944715] [2022-09-16 11:51:19,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:51:19,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:51:19,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:51:19,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:51:19,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:51:19,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515944715] [2022-09-16 11:51:19,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515944715] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:51:19,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:51:19,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:51:19,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120156022] [2022-09-16 11:51:19,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:51:19,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:51:19,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:51:19,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:51:19,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:51:19,134 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 238 [2022-09-16 11:51:19,135 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 182 transitions, 384 flow. Second operand has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:19,135 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:51:19,136 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 238 [2022-09-16 11:51:19,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:51:19,688 INFO L130 PetriNetUnfolder]: 1731/2929 cut-off events. [2022-09-16 11:51:19,688 INFO L131 PetriNetUnfolder]: For 101/101 co-relation queries the response was YES. [2022-09-16 11:51:19,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5772 conditions, 2929 events. 1731/2929 cut-off events. For 101/101 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 17977 event pairs, 1376 based on Foata normal form. 0/1387 useless extension candidates. Maximal degree in co-relation 5706. Up to 2576 conditions per place. [2022-09-16 11:51:19,715 INFO L137 encePairwiseOnDemand]: 234/238 looper letters, 41 selfloop transitions, 3 changer transitions 0/181 dead transitions. [2022-09-16 11:51:19,715 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 181 transitions, 470 flow [2022-09-16 11:51:19,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:51:19,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:51:19,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 721 transitions. [2022-09-16 11:51:19,718 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7573529411764706 [2022-09-16 11:51:19,718 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 721 transitions. [2022-09-16 11:51:19,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 721 transitions. [2022-09-16 11:51:19,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:51:19,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 721 transitions. [2022-09-16 11:51:19,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 180.25) internal successors, (721), 4 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:19,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 238.0) internal successors, (1190), 5 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:19,723 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 238.0) internal successors, (1190), 5 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:19,723 INFO L175 Difference]: Start difference. First operand has 189 places, 182 transitions, 384 flow. Second operand 4 states and 721 transitions. [2022-09-16 11:51:19,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 181 transitions, 470 flow [2022-09-16 11:51:19,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 181 transitions, 460 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:51:19,729 INFO L231 Difference]: Finished difference. Result has 184 places, 181 transitions, 378 flow [2022-09-16 11:51:19,730 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=378, PETRI_PLACES=184, PETRI_TRANSITIONS=181} [2022-09-16 11:51:19,730 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, -18 predicate places. [2022-09-16 11:51:19,731 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 181 transitions, 378 flow [2022-09-16 11:51:19,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:19,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:51:19,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:51:19,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-16 11:51:19,732 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-09-16 11:51:19,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:51:19,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1268055398, now seen corresponding path program 1 times [2022-09-16 11:51:19,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:51:19,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139174501] [2022-09-16 11:51:19,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:51:19,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:51:19,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:51:19,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:51:19,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:51:19,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139174501] [2022-09-16 11:51:19,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139174501] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:51:19,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:51:19,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:51:19,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926221927] [2022-09-16 11:51:19,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:51:19,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:51:19,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:51:19,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:51:19,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:51:19,831 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 238 [2022-09-16 11:51:19,832 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 181 transitions, 378 flow. Second operand has 4 states, 4 states have (on average 169.5) internal successors, (678), 4 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:19,832 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:51:19,832 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 238 [2022-09-16 11:51:19,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:51:20,676 INFO L130 PetriNetUnfolder]: 3461/5780 cut-off events. [2022-09-16 11:51:20,676 INFO L131 PetriNetUnfolder]: For 198/198 co-relation queries the response was YES. [2022-09-16 11:51:20,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11458 conditions, 5780 events. 3461/5780 cut-off events. For 198/198 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 38906 event pairs, 2752 based on Foata normal form. 0/2718 useless extension candidates. Maximal degree in co-relation 11426. Up to 2582 conditions per place. [2022-09-16 11:51:20,753 INFO L137 encePairwiseOnDemand]: 232/238 looper letters, 86 selfloop transitions, 4 changer transitions 0/224 dead transitions. [2022-09-16 11:51:20,753 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 224 transitions, 654 flow [2022-09-16 11:51:20,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:51:20,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:51:20,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 932 transitions. [2022-09-16 11:51:20,756 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7831932773109244 [2022-09-16 11:51:20,756 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 932 transitions. [2022-09-16 11:51:20,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 932 transitions. [2022-09-16 11:51:20,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:51:20,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 932 transitions. [2022-09-16 11:51:20,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 186.4) internal successors, (932), 5 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:20,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 238.0) internal successors, (1428), 6 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:20,760 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 238.0) internal successors, (1428), 6 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:20,760 INFO L175 Difference]: Start difference. First operand has 184 places, 181 transitions, 378 flow. Second operand 5 states and 932 transitions. [2022-09-16 11:51:20,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 224 transitions, 654 flow [2022-09-16 11:51:20,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 224 transitions, 648 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:51:20,764 INFO L231 Difference]: Finished difference. Result has 188 places, 184 transitions, 402 flow [2022-09-16 11:51:20,764 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=402, PETRI_PLACES=188, PETRI_TRANSITIONS=184} [2022-09-16 11:51:20,764 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, -14 predicate places. [2022-09-16 11:51:20,765 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 184 transitions, 402 flow [2022-09-16 11:51:20,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 169.5) internal successors, (678), 4 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:20,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:51:20,766 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] [2022-09-16 11:51:20,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-16 11:51:20,766 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-09-16 11:51:20,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:51:20,766 INFO L85 PathProgramCache]: Analyzing trace with hash 910809127, now seen corresponding path program 1 times [2022-09-16 11:51:20,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:51:20,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668526616] [2022-09-16 11:51:20,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:51:20,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:51:20,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:51:20,844 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:51:20,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:51:20,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668526616] [2022-09-16 11:51:20,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668526616] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:51:20,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614393873] [2022-09-16 11:51:20,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:51:20,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:51:20,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:51:20,851 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:51:20,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-16 11:51:20,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:51:20,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:51:20,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:51:21,007 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:51:21,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:51:21,056 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:51:21,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614393873] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:51:21,057 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:51:21,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:51:21,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335366746] [2022-09-16 11:51:21,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:51:21,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:51:21,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:51:21,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:51:21,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:51:21,060 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 238 [2022-09-16 11:51:21,062 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 184 transitions, 402 flow. Second operand has 12 states, 12 states have (on average 170.66666666666666) internal successors, (2048), 12 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:21,062 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:51:21,062 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 238 [2022-09-16 11:51:21,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:51:23,280 INFO L130 PetriNetUnfolder]: 8651/14335 cut-off events. [2022-09-16 11:51:23,280 INFO L131 PetriNetUnfolder]: For 506/506 co-relation queries the response was YES. [2022-09-16 11:51:23,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28540 conditions, 14335 events. 8651/14335 cut-off events. For 506/506 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 105435 event pairs, 6880 based on Foata normal form. 3/6702 useless extension candidates. Maximal degree in co-relation 22764. Up to 2577 conditions per place. [2022-09-16 11:51:23,449 INFO L137 encePairwiseOnDemand]: 231/238 looper letters, 203 selfloop transitions, 18 changer transitions 0/355 dead transitions. [2022-09-16 11:51:23,450 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 355 transitions, 1248 flow [2022-09-16 11:51:23,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:51:23,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:51:23,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3248 transitions. [2022-09-16 11:51:23,457 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7581699346405228 [2022-09-16 11:51:23,467 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3248 transitions. [2022-09-16 11:51:23,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3248 transitions. [2022-09-16 11:51:23,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:51:23,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3248 transitions. [2022-09-16 11:51:23,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 180.44444444444446) internal successors, (3248), 18 states have internal predecessors, (3248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:23,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 238.0) internal successors, (4522), 19 states have internal predecessors, (4522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:23,479 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 238.0) internal successors, (4522), 19 states have internal predecessors, (4522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:23,479 INFO L175 Difference]: Start difference. First operand has 188 places, 184 transitions, 402 flow. Second operand 18 states and 3248 transitions. [2022-09-16 11:51:23,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 355 transitions, 1248 flow [2022-09-16 11:51:23,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 355 transitions, 1246 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:51:23,484 INFO L231 Difference]: Finished difference. Result has 208 places, 196 transitions, 506 flow [2022-09-16 11:51:23,484 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=506, PETRI_PLACES=208, PETRI_TRANSITIONS=196} [2022-09-16 11:51:23,485 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, 6 predicate places. [2022-09-16 11:51:23,486 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 196 transitions, 506 flow [2022-09-16 11:51:23,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 170.66666666666666) internal successors, (2048), 12 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:23,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:51:23,487 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:51:23,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-09-16 11:51:23,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:51:23,704 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-09-16 11:51:23,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:51:23,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1829687088, now seen corresponding path program 1 times [2022-09-16 11:51:23,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:51:23,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081835829] [2022-09-16 11:51:23,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:51:23,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:51:23,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:51:23,787 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:51:23,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:51:23,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081835829] [2022-09-16 11:51:23,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081835829] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:51:23,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58581452] [2022-09-16 11:51:23,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:51:23,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:51:23,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:51:23,789 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:51:23,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-16 11:51:23,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:51:23,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:51:23,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:51:23,921 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:51:23,921 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:51:23,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58581452] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:51:23,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:51:23,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:51:23,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547181755] [2022-09-16 11:51:23,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:51:23,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:51:23,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:51:23,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:51:23,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:51:23,924 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 238 [2022-09-16 11:51:23,924 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 196 transitions, 506 flow. Second operand has 6 states, 6 states have (on average 170.33333333333334) internal successors, (1022), 6 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:23,924 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:51:23,925 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 238 [2022-09-16 11:51:23,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:51:25,682 INFO L130 PetriNetUnfolder]: 8651/14331 cut-off events. [2022-09-16 11:51:25,682 INFO L131 PetriNetUnfolder]: For 542/542 co-relation queries the response was YES. [2022-09-16 11:51:25,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28558 conditions, 14331 events. 8651/14331 cut-off events. For 542/542 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 105371 event pairs, 6880 based on Foata normal form. 4/6715 useless extension candidates. Maximal degree in co-relation 22836. Up to 10292 conditions per place. [2022-09-16 11:51:25,769 INFO L137 encePairwiseOnDemand]: 233/238 looper letters, 87 selfloop transitions, 11 changer transitions 0/232 dead transitions. [2022-09-16 11:51:25,769 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 232 transitions, 767 flow [2022-09-16 11:51:25,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:51:25,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:51:25,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1266 transitions. [2022-09-16 11:51:25,771 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7599039615846338 [2022-09-16 11:51:25,772 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1266 transitions. [2022-09-16 11:51:25,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1266 transitions. [2022-09-16 11:51:25,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:51:25,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1266 transitions. [2022-09-16 11:51:25,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 180.85714285714286) internal successors, (1266), 7 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:25,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 238.0) internal successors, (1904), 8 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:25,776 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 238.0) internal successors, (1904), 8 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:25,776 INFO L175 Difference]: Start difference. First operand has 208 places, 196 transitions, 506 flow. Second operand 7 states and 1266 transitions. [2022-09-16 11:51:25,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 232 transitions, 767 flow [2022-09-16 11:51:25,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 232 transitions, 735 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-09-16 11:51:25,781 INFO L231 Difference]: Finished difference. Result has 204 places, 192 transitions, 469 flow [2022-09-16 11:51:25,781 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=469, PETRI_PLACES=204, PETRI_TRANSITIONS=192} [2022-09-16 11:51:25,782 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, 2 predicate places. [2022-09-16 11:51:25,782 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 192 transitions, 469 flow [2022-09-16 11:51:25,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 170.33333333333334) internal successors, (1022), 6 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:25,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:51:25,782 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] [2022-09-16 11:51:25,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-09-16 11:51:25,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:51:26,000 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-09-16 11:51:26,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:51:26,000 INFO L85 PathProgramCache]: Analyzing trace with hash -510152212, now seen corresponding path program 1 times [2022-09-16 11:51:26,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:51:26,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881649456] [2022-09-16 11:51:26,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:51:26,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:51:26,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:51:26,049 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 11:51:26,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:51:26,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881649456] [2022-09-16 11:51:26,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881649456] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:51:26,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:51:26,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:51:26,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146170793] [2022-09-16 11:51:26,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:51:26,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:51:26,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:51:26,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:51:26,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:51:26,054 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 238 [2022-09-16 11:51:26,055 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 192 transitions, 469 flow. Second operand has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:26,055 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:51:26,055 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 238 [2022-09-16 11:51:26,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:51:28,439 INFO L130 PetriNetUnfolder]: 10381/20186 cut-off events. [2022-09-16 11:51:28,439 INFO L131 PetriNetUnfolder]: For 617/617 co-relation queries the response was YES. [2022-09-16 11:51:28,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37027 conditions, 20186 events. 10381/20186 cut-off events. For 617/617 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 182043 event pairs, 6880 based on Foata normal form. 0/10711 useless extension candidates. Maximal degree in co-relation 29618. Up to 12847 conditions per place. [2022-09-16 11:51:28,551 INFO L137 encePairwiseOnDemand]: 233/238 looper letters, 59 selfloop transitions, 4 changer transitions 0/218 dead transitions. [2022-09-16 11:51:28,551 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 218 transitions, 654 flow [2022-09-16 11:51:28,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:51:28,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:51:28,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 598 transitions. [2022-09-16 11:51:28,553 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8375350140056023 [2022-09-16 11:51:28,553 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 598 transitions. [2022-09-16 11:51:28,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 598 transitions. [2022-09-16 11:51:28,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:51:28,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 598 transitions. [2022-09-16 11:51:28,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.33333333333334) internal successors, (598), 3 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:28,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:28,558 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:28,558 INFO L175 Difference]: Start difference. First operand has 204 places, 192 transitions, 469 flow. Second operand 3 states and 598 transitions. [2022-09-16 11:51:28,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 218 transitions, 654 flow [2022-09-16 11:51:28,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 218 transitions, 640 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:51:28,566 INFO L231 Difference]: Finished difference. Result has 202 places, 193 transitions, 473 flow [2022-09-16 11:51:28,567 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=473, PETRI_PLACES=202, PETRI_TRANSITIONS=193} [2022-09-16 11:51:28,569 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, 0 predicate places. [2022-09-16 11:51:28,569 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 193 transitions, 473 flow [2022-09-16 11:51:28,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:28,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:51:28,569 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] [2022-09-16 11:51:28,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-16 11:51:28,570 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-09-16 11:51:28,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:51:28,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1936803777, now seen corresponding path program 1 times [2022-09-16 11:51:28,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:51:28,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641992398] [2022-09-16 11:51:28,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:51:28,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:51:28,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:51:28,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:51:28,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:51:28,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641992398] [2022-09-16 11:51:28,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641992398] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:51:28,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:51:28,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:51:28,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6562041] [2022-09-16 11:51:28,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:51:28,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:51:28,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:51:28,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:51:28,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:51:28,619 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 238 [2022-09-16 11:51:28,620 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 193 transitions, 473 flow. Second operand has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:28,620 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:51:28,620 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 238 [2022-09-16 11:51:28,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:51:30,938 INFO L130 PetriNetUnfolder]: 11636/20541 cut-off events. [2022-09-16 11:51:30,939 INFO L131 PetriNetUnfolder]: For 3138/3138 co-relation queries the response was YES. [2022-09-16 11:51:30,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41789 conditions, 20541 events. 11636/20541 cut-off events. For 3138/3138 co-relation queries the response was YES. Maximal size of possible extension queue 611. Compared 167974 event pairs, 6445 based on Foata normal form. 0/10911 useless extension candidates. Maximal degree in co-relation 33428. Up to 15597 conditions per place. [2022-09-16 11:51:31,068 INFO L137 encePairwiseOnDemand]: 231/238 looper letters, 54 selfloop transitions, 5 changer transitions 0/214 dead transitions. [2022-09-16 11:51:31,068 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 214 transitions, 651 flow [2022-09-16 11:51:31,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:51:31,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:51:31,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 593 transitions. [2022-09-16 11:51:31,071 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8305322128851541 [2022-09-16 11:51:31,071 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 593 transitions. [2022-09-16 11:51:31,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 593 transitions. [2022-09-16 11:51:31,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:51:31,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 593 transitions. [2022-09-16 11:51:31,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.66666666666666) internal successors, (593), 3 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:31,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:31,076 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:31,076 INFO L175 Difference]: Start difference. First operand has 202 places, 193 transitions, 473 flow. Second operand 3 states and 593 transitions. [2022-09-16 11:51:31,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 214 transitions, 651 flow [2022-09-16 11:51:31,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 214 transitions, 645 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:51:31,085 INFO L231 Difference]: Finished difference. Result has 204 places, 195 transitions, 496 flow [2022-09-16 11:51:31,085 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=496, PETRI_PLACES=204, PETRI_TRANSITIONS=195} [2022-09-16 11:51:31,086 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, 2 predicate places. [2022-09-16 11:51:31,086 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 195 transitions, 496 flow [2022-09-16 11:51:31,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:31,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:51:31,086 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] [2022-09-16 11:51:31,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 11:51:31,086 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-09-16 11:51:31,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:51:31,087 INFO L85 PathProgramCache]: Analyzing trace with hash 88626163, now seen corresponding path program 1 times [2022-09-16 11:51:31,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:51:31,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290904021] [2022-09-16 11:51:31,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:51:31,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:51:31,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:51:31,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:51:31,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:51:31,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290904021] [2022-09-16 11:51:31,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290904021] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:51:31,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:51:31,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:51:31,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050696182] [2022-09-16 11:51:31,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:51:31,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:51:31,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:51:31,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:51:31,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-09-16 11:51:31,157 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 238 [2022-09-16 11:51:31,158 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 195 transitions, 496 flow. Second operand has 7 states, 7 states have (on average 161.85714285714286) internal successors, (1133), 7 states have internal predecessors, (1133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:31,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:51:31,158 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 238 [2022-09-16 11:51:31,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:51:33,425 INFO L130 PetriNetUnfolder]: 9081/18780 cut-off events. [2022-09-16 11:51:33,425 INFO L131 PetriNetUnfolder]: For 3193/3193 co-relation queries the response was YES. [2022-09-16 11:51:33,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37262 conditions, 18780 events. 9081/18780 cut-off events. For 3193/3193 co-relation queries the response was YES. Maximal size of possible extension queue 641. Compared 167946 event pairs, 4613 based on Foata normal form. 360/11876 useless extension candidates. Maximal degree in co-relation 36072. Up to 8573 conditions per place. [2022-09-16 11:51:33,521 INFO L137 encePairwiseOnDemand]: 226/238 looper letters, 115 selfloop transitions, 8 changer transitions 2/255 dead transitions. [2022-09-16 11:51:33,521 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 255 transitions, 908 flow [2022-09-16 11:51:33,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:51:33,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 11:51:33,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1391 transitions. [2022-09-16 11:51:33,526 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7305672268907563 [2022-09-16 11:51:33,526 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1391 transitions. [2022-09-16 11:51:33,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1391 transitions. [2022-09-16 11:51:33,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:51:33,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1391 transitions. [2022-09-16 11:51:33,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 173.875) internal successors, (1391), 8 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:33,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 238.0) internal successors, (2142), 9 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:33,531 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 238.0) internal successors, (2142), 9 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:33,531 INFO L175 Difference]: Start difference. First operand has 204 places, 195 transitions, 496 flow. Second operand 8 states and 1391 transitions. [2022-09-16 11:51:33,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 255 transitions, 908 flow [2022-09-16 11:51:33,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 255 transitions, 902 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:51:33,539 INFO L231 Difference]: Finished difference. Result has 215 places, 199 transitions, 554 flow [2022-09-16 11:51:33,539 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=554, PETRI_PLACES=215, PETRI_TRANSITIONS=199} [2022-09-16 11:51:33,540 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, 13 predicate places. [2022-09-16 11:51:33,540 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 199 transitions, 554 flow [2022-09-16 11:51:33,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 161.85714285714286) internal successors, (1133), 7 states have internal predecessors, (1133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:33,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:51:33,540 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] [2022-09-16 11:51:33,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-16 11:51:33,541 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread4Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-09-16 11:51:33,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:51:33,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1365151756, now seen corresponding path program 1 times [2022-09-16 11:51:33,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:51:33,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579449529] [2022-09-16 11:51:33,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:51:33,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:51:33,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:51:33,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:51:33,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:51:33,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579449529] [2022-09-16 11:51:33,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579449529] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:51:33,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:51:33,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:51:33,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244344793] [2022-09-16 11:51:33,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:51:33,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:51:33,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:51:33,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:51:33,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:51:33,578 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 238 [2022-09-16 11:51:33,579 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 199 transitions, 554 flow. Second operand has 3 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:33,579 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:51:33,579 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 238 [2022-09-16 11:51:33,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:51:36,246 INFO L130 PetriNetUnfolder]: 11352/22764 cut-off events. [2022-09-16 11:51:36,246 INFO L131 PetriNetUnfolder]: For 9086/9086 co-relation queries the response was YES. [2022-09-16 11:51:36,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49928 conditions, 22764 events. 11352/22764 cut-off events. For 9086/9086 co-relation queries the response was YES. Maximal size of possible extension queue 730. Compared 213886 event pairs, 5512 based on Foata normal form. 0/12856 useless extension candidates. Maximal degree in co-relation 48416. Up to 11439 conditions per place. [2022-09-16 11:51:36,401 INFO L137 encePairwiseOnDemand]: 232/238 looper letters, 72 selfloop transitions, 4 changer transitions 0/232 dead transitions. [2022-09-16 11:51:36,401 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 232 transitions, 829 flow [2022-09-16 11:51:36,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:51:36,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:51:36,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 599 transitions. [2022-09-16 11:51:36,403 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8389355742296919 [2022-09-16 11:51:36,403 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 599 transitions. [2022-09-16 11:51:36,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 599 transitions. [2022-09-16 11:51:36,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:51:36,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 599 transitions. [2022-09-16 11:51:36,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.66666666666666) internal successors, (599), 3 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:36,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:36,405 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:36,405 INFO L175 Difference]: Start difference. First operand has 215 places, 199 transitions, 554 flow. Second operand 3 states and 599 transitions. [2022-09-16 11:51:36,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 232 transitions, 829 flow [2022-09-16 11:51:36,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 232 transitions, 826 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:51:36,411 INFO L231 Difference]: Finished difference. Result has 216 places, 200 transitions, 571 flow [2022-09-16 11:51:36,411 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=571, PETRI_PLACES=216, PETRI_TRANSITIONS=200} [2022-09-16 11:51:36,412 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, 14 predicate places. [2022-09-16 11:51:36,412 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 200 transitions, 571 flow [2022-09-16 11:51:36,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:36,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:51:36,413 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] [2022-09-16 11:51:36,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-16 11:51:36,413 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-09-16 11:51:36,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:51:36,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1365151751, now seen corresponding path program 1 times [2022-09-16 11:51:36,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:51:36,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417232275] [2022-09-16 11:51:36,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:51:36,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:51:36,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:51:36,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:51:36,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:51:36,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417232275] [2022-09-16 11:51:36,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417232275] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:51:36,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:51:36,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:51:36,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92448842] [2022-09-16 11:51:36,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:51:36,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:51:36,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:51:36,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:51:36,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-09-16 11:51:36,475 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 238 [2022-09-16 11:51:36,476 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 200 transitions, 571 flow. Second operand has 7 states, 7 states have (on average 161.85714285714286) internal successors, (1133), 7 states have internal predecessors, (1133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:36,476 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:51:36,476 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 238 [2022-09-16 11:51:36,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:51:39,364 INFO L130 PetriNetUnfolder]: 11153/21381 cut-off events. [2022-09-16 11:51:39,364 INFO L131 PetriNetUnfolder]: For 11457/11457 co-relation queries the response was YES. [2022-09-16 11:51:39,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50354 conditions, 21381 events. 11153/21381 cut-off events. For 11457/11457 co-relation queries the response was YES. Maximal size of possible extension queue 732. Compared 187669 event pairs, 8456 based on Foata normal form. 12/12795 useless extension candidates. Maximal degree in co-relation 49740. Up to 16753 conditions per place. [2022-09-16 11:51:39,483 INFO L137 encePairwiseOnDemand]: 231/238 looper letters, 66 selfloop transitions, 4 changer transitions 25/225 dead transitions. [2022-09-16 11:51:39,483 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 225 transitions, 847 flow [2022-09-16 11:51:39,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:51:39,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:51:39,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1197 transitions. [2022-09-16 11:51:39,486 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7184873949579832 [2022-09-16 11:51:39,486 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1197 transitions. [2022-09-16 11:51:39,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1197 transitions. [2022-09-16 11:51:39,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:51:39,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1197 transitions. [2022-09-16 11:51:39,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:39,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 238.0) internal successors, (1904), 8 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:39,491 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 238.0) internal successors, (1904), 8 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:39,491 INFO L175 Difference]: Start difference. First operand has 216 places, 200 transitions, 571 flow. Second operand 7 states and 1197 transitions. [2022-09-16 11:51:39,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 225 transitions, 847 flow [2022-09-16 11:51:39,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 225 transitions, 842 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:51:39,497 INFO L231 Difference]: Finished difference. Result has 223 places, 198 transitions, 565 flow [2022-09-16 11:51:39,497 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=567, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=565, PETRI_PLACES=223, PETRI_TRANSITIONS=198} [2022-09-16 11:51:39,498 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, 21 predicate places. [2022-09-16 11:51:39,498 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 198 transitions, 565 flow [2022-09-16 11:51:39,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 161.85714285714286) internal successors, (1133), 7 states have internal predecessors, (1133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:39,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:51:39,498 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] [2022-09-16 11:51:39,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-09-16 11:51:39,499 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread4Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-09-16 11:51:39,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:51:39,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1296937251, now seen corresponding path program 1 times [2022-09-16 11:51:39,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:51:39,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104394150] [2022-09-16 11:51:39,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:51:39,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:51:39,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:51:39,568 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:51:39,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:51:39,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104394150] [2022-09-16 11:51:39,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104394150] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:51:39,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392926958] [2022-09-16 11:51:39,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:51:39,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:51:39,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:51:39,569 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:51:39,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-16 11:51:39,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:51:39,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 12 conjunts are in the unsatisfiable core [2022-09-16 11:51:39,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:51:39,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:51:39,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:51:39,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:51:39,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392926958] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:51:39,936 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:51:39,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-09-16 11:51:39,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530379275] [2022-09-16 11:51:39,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:51:39,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-16 11:51:39,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:51:39,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-16 11:51:39,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2022-09-16 11:51:39,939 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 238 [2022-09-16 11:51:39,940 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 198 transitions, 565 flow. Second operand has 18 states, 18 states have (on average 156.94444444444446) internal successors, (2825), 18 states have internal predecessors, (2825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:39,941 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:51:39,941 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 238 [2022-09-16 11:51:39,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:51:42,726 INFO L130 PetriNetUnfolder]: 8968/18264 cut-off events. [2022-09-16 11:51:42,726 INFO L131 PetriNetUnfolder]: For 10517/10517 co-relation queries the response was YES. [2022-09-16 11:51:42,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42153 conditions, 18264 events. 8968/18264 cut-off events. For 10517/10517 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 165957 event pairs, 5647 based on Foata normal form. 94/11423 useless extension candidates. Maximal degree in co-relation 42010. Up to 10886 conditions per place. [2022-09-16 11:51:42,825 INFO L137 encePairwiseOnDemand]: 224/238 looper letters, 141 selfloop transitions, 17 changer transitions 15/295 dead transitions. [2022-09-16 11:51:42,825 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 295 transitions, 1273 flow [2022-09-16 11:51:42,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-09-16 11:51:42,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-09-16 11:51:42,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2305 transitions. [2022-09-16 11:51:42,830 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6917767106842737 [2022-09-16 11:51:42,830 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2305 transitions. [2022-09-16 11:51:42,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2305 transitions. [2022-09-16 11:51:42,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:51:42,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2305 transitions. [2022-09-16 11:51:42,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 164.64285714285714) internal successors, (2305), 14 states have internal predecessors, (2305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:42,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 238.0) internal successors, (3570), 15 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:42,838 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 238.0) internal successors, (3570), 15 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:42,838 INFO L175 Difference]: Start difference. First operand has 223 places, 198 transitions, 565 flow. Second operand 14 states and 2305 transitions. [2022-09-16 11:51:42,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 295 transitions, 1273 flow [2022-09-16 11:51:42,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 295 transitions, 1233 flow, removed 15 selfloop flow, removed 9 redundant places. [2022-09-16 11:51:42,857 INFO L231 Difference]: Finished difference. Result has 227 places, 202 transitions, 617 flow [2022-09-16 11:51:42,858 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=545, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=617, PETRI_PLACES=227, PETRI_TRANSITIONS=202} [2022-09-16 11:51:42,858 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, 25 predicate places. [2022-09-16 11:51:42,858 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 202 transitions, 617 flow [2022-09-16 11:51:42,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 156.94444444444446) internal successors, (2825), 18 states have internal predecessors, (2825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:42,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:51:42,864 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] [2022-09-16 11:51:42,882 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-09-16 11:51:43,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:51:43,081 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-09-16 11:51:43,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:51:43,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1721504455, now seen corresponding path program 1 times [2022-09-16 11:51:43,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:51:43,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593345217] [2022-09-16 11:51:43,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:51:43,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:51:43,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:51:43,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:51:43,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:51:43,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593345217] [2022-09-16 11:51:43,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593345217] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:51:43,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:51:43,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:51:43,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623142114] [2022-09-16 11:51:43,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:51:43,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:51:43,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:51:43,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:51:43,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:51:43,136 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 238 [2022-09-16 11:51:43,136 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 202 transitions, 617 flow. Second operand has 3 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:43,136 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:51:43,136 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 238 [2022-09-16 11:51:43,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:51:46,208 INFO L130 PetriNetUnfolder]: 12316/24228 cut-off events. [2022-09-16 11:51:46,208 INFO L131 PetriNetUnfolder]: For 14115/14115 co-relation queries the response was YES. [2022-09-16 11:51:46,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57999 conditions, 24228 events. 12316/24228 cut-off events. For 14115/14115 co-relation queries the response was YES. Maximal size of possible extension queue 924. Compared 231121 event pairs, 7064 based on Foata normal form. 0/14490 useless extension candidates. Maximal degree in co-relation 57864. Up to 12753 conditions per place. [2022-09-16 11:51:46,349 INFO L137 encePairwiseOnDemand]: 229/238 looper letters, 74 selfloop transitions, 5 changer transitions 0/236 dead transitions. [2022-09-16 11:51:46,349 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 236 transitions, 914 flow [2022-09-16 11:51:46,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:51:46,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:51:46,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 600 transitions. [2022-09-16 11:51:46,351 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8403361344537815 [2022-09-16 11:51:46,351 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 600 transitions. [2022-09-16 11:51:46,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 600 transitions. [2022-09-16 11:51:46,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:51:46,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 600 transitions. [2022-09-16 11:51:46,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 200.0) internal successors, (600), 3 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:46,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:46,353 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:46,353 INFO L175 Difference]: Start difference. First operand has 227 places, 202 transitions, 617 flow. Second operand 3 states and 600 transitions. [2022-09-16 11:51:46,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 236 transitions, 914 flow [2022-09-16 11:51:46,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 236 transitions, 897 flow, removed 1 selfloop flow, removed 7 redundant places. [2022-09-16 11:51:46,368 INFO L231 Difference]: Finished difference. Result has 223 places, 204 transitions, 631 flow [2022-09-16 11:51:46,368 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=600, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=631, PETRI_PLACES=223, PETRI_TRANSITIONS=204} [2022-09-16 11:51:46,368 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, 21 predicate places. [2022-09-16 11:51:46,369 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 204 transitions, 631 flow [2022-09-16 11:51:46,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:46,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:51:46,369 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] [2022-09-16 11:51:46,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-09-16 11:51:46,369 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-09-16 11:51:46,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:51:46,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1721504453, now seen corresponding path program 1 times [2022-09-16 11:51:46,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:51:46,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675855298] [2022-09-16 11:51:46,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:51:46,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:51:46,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:51:46,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:51:46,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:51:46,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675855298] [2022-09-16 11:51:46,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675855298] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:51:46,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616013792] [2022-09-16 11:51:46,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:51:46,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:51:46,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:51:46,427 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:51:46,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-09-16 11:51:46,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:51:46,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 12 conjunts are in the unsatisfiable core [2022-09-16 11:51:46,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:51:46,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:51:46,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:51:46,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:51:46,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616013792] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:51:46,746 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:51:46,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-09-16 11:51:46,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121849555] [2022-09-16 11:51:46,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:51:46,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-16 11:51:46,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:51:46,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-16 11:51:46,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2022-09-16 11:51:46,748 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 238 [2022-09-16 11:51:46,750 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 204 transitions, 631 flow. Second operand has 18 states, 18 states have (on average 157.0) internal successors, (2826), 18 states have internal predecessors, (2826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:46,750 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:51:46,750 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 238 [2022-09-16 11:51:46,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:51:49,848 INFO L130 PetriNetUnfolder]: 11484/23042 cut-off events. [2022-09-16 11:51:49,848 INFO L131 PetriNetUnfolder]: For 13195/13195 co-relation queries the response was YES. [2022-09-16 11:51:49,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57921 conditions, 23042 events. 11484/23042 cut-off events. For 13195/13195 co-relation queries the response was YES. Maximal size of possible extension queue 906. Compared 213830 event pairs, 6313 based on Foata normal form. 12/15992 useless extension candidates. Maximal degree in co-relation 57770. Up to 11267 conditions per place. [2022-09-16 11:51:49,982 INFO L137 encePairwiseOnDemand]: 222/238 looper letters, 95 selfloop transitions, 16 changer transitions 20/253 dead transitions. [2022-09-16 11:51:49,982 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 253 transitions, 1082 flow [2022-09-16 11:51:49,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-09-16 11:51:49,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-09-16 11:51:49,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2270 transitions. [2022-09-16 11:51:49,986 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6812725090036015 [2022-09-16 11:51:49,986 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2270 transitions. [2022-09-16 11:51:49,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2270 transitions. [2022-09-16 11:51:49,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:51:49,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2270 transitions. [2022-09-16 11:51:49,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 162.14285714285714) internal successors, (2270), 14 states have internal predecessors, (2270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:49,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 238.0) internal successors, (3570), 15 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:49,992 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 238.0) internal successors, (3570), 15 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:49,992 INFO L175 Difference]: Start difference. First operand has 223 places, 204 transitions, 631 flow. Second operand 14 states and 2270 transitions. [2022-09-16 11:51:49,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 253 transitions, 1082 flow [2022-09-16 11:51:49,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 253 transitions, 1074 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:51:50,002 INFO L231 Difference]: Finished difference. Result has 237 places, 201 transitions, 644 flow [2022-09-16 11:51:50,002 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=626, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=644, PETRI_PLACES=237, PETRI_TRANSITIONS=201} [2022-09-16 11:51:50,002 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, 35 predicate places. [2022-09-16 11:51:50,002 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 201 transitions, 644 flow [2022-09-16 11:51:50,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 157.0) internal successors, (2826), 18 states have internal predecessors, (2826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:50,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:51:50,003 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2022-09-16 11:51:50,020 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 11:51:50,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:51:50,213 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread4Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-09-16 11:51:50,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:51:50,214 INFO L85 PathProgramCache]: Analyzing trace with hash -113472150, now seen corresponding path program 2 times [2022-09-16 11:51:50,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:51:50,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126270872] [2022-09-16 11:51:50,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:51:50,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:51:50,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:51:50,517 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:51:50,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:51:50,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126270872] [2022-09-16 11:51:50,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126270872] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:51:50,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051622752] [2022-09-16 11:51:50,517 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:51:50,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:51:50,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:51:50,518 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:51:50,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-09-16 11:51:50,616 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-16 11:51:50,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:51:50,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 41 conjunts are in the unsatisfiable core [2022-09-16 11:51:50,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:51:50,643 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-16 11:51:50,742 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-16 11:51:50,743 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-09-16 11:51:50,900 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-09-16 11:51:51,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:51:51,035 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-09-16 11:51:51,075 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-09-16 11:51:51,125 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-09-16 11:51:51,127 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:51:51,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:51:51,199 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_219 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_219) c_~X_0~0.base) (+ c_~X_0~0.offset 4)) 4294967296)) is different from false [2022-09-16 11:51:51,221 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_218 (Array Int Int)) (v_ArrVal_219 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_218) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_219) c_~X_0~0.base) (+ c_~X_0~0.offset 4)) 4294967296)) is different from false [2022-09-16 11:51:51,238 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_218 (Array Int Int)) (v_ArrVal_219 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_218) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_219) |c_ULTIMATE.start_main_#t~ret27#1.base|) (+ |c_ULTIMATE.start_main_#t~ret27#1.offset| 4)) 4294967296)) is different from false [2022-09-16 11:51:51,244 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_218 (Array Int Int)) (v_ArrVal_219 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_218) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_219) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) (+ |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset| 4)) 4294967296)) is different from false [2022-09-16 11:51:51,250 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_218 (Array Int Int)) (v_ArrVal_219 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_218) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_219) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 4294967296)) is different from false [2022-09-16 11:51:51,275 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:51:51,277 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2022-09-16 11:51:51,289 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:51:51,289 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 68 [2022-09-16 11:51:51,294 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 46 [2022-09-16 11:51:51,298 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-09-16 11:51:51,828 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-09-16 11:51:51,848 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 8 not checked. [2022-09-16 11:51:51,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051622752] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:51:51,848 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:51:51,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 47 [2022-09-16 11:51:51,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32059094] [2022-09-16 11:51:51,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:51:51,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-09-16 11:51:51,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:51:51,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-09-16 11:51:51,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1652, Unknown=5, NotChecked=430, Total=2256 [2022-09-16 11:51:51,852 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 238 [2022-09-16 11:51:51,856 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 201 transitions, 644 flow. Second operand has 48 states, 48 states have (on average 127.5625) internal successors, (6123), 48 states have internal predecessors, (6123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:51,856 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:51:51,856 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 238 [2022-09-16 11:51:51,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:52:09,477 INFO L130 PetriNetUnfolder]: 69830/111119 cut-off events. [2022-09-16 11:52:09,477 INFO L131 PetriNetUnfolder]: For 72802/72802 co-relation queries the response was YES. [2022-09-16 11:52:10,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281609 conditions, 111119 events. 69830/111119 cut-off events. For 72802/72802 co-relation queries the response was YES. Maximal size of possible extension queue 3796. Compared 1023751 event pairs, 27229 based on Foata normal form. 0/80273 useless extension candidates. Maximal degree in co-relation 281441. Up to 44658 conditions per place. [2022-09-16 11:52:10,537 INFO L137 encePairwiseOnDemand]: 209/238 looper letters, 205 selfloop transitions, 43 changer transitions 0/346 dead transitions. [2022-09-16 11:52:10,537 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 346 transitions, 1665 flow [2022-09-16 11:52:10,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-09-16 11:52:10,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-09-16 11:52:10,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3850 transitions. [2022-09-16 11:52:10,542 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5578093306288032 [2022-09-16 11:52:10,542 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3850 transitions. [2022-09-16 11:52:10,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3850 transitions. [2022-09-16 11:52:10,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:52:10,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3850 transitions. [2022-09-16 11:52:10,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 132.75862068965517) internal successors, (3850), 29 states have internal predecessors, (3850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:10,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 238.0) internal successors, (7140), 30 states have internal predecessors, (7140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:10,554 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 238.0) internal successors, (7140), 30 states have internal predecessors, (7140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:10,554 INFO L175 Difference]: Start difference. First operand has 237 places, 201 transitions, 644 flow. Second operand 29 states and 3850 transitions. [2022-09-16 11:52:10,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 346 transitions, 1665 flow [2022-09-16 11:52:11,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 346 transitions, 1598 flow, removed 17 selfloop flow, removed 15 redundant places. [2022-09-16 11:52:11,019 INFO L231 Difference]: Finished difference. Result has 261 places, 229 transitions, 871 flow [2022-09-16 11:52:11,020 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=871, PETRI_PLACES=261, PETRI_TRANSITIONS=229} [2022-09-16 11:52:11,020 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, 59 predicate places. [2022-09-16 11:52:11,020 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 229 transitions, 871 flow [2022-09-16 11:52:11,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 127.5625) internal successors, (6123), 48 states have internal predecessors, (6123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:11,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:52:11,022 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2022-09-16 11:52:11,038 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-09-16 11:52:11,238 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,SelfDestructingSolverStorable13 [2022-09-16 11:52:11,239 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-09-16 11:52:11,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:52:11,239 INFO L85 PathProgramCache]: Analyzing trace with hash -113472153, now seen corresponding path program 1 times [2022-09-16 11:52:11,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:52:11,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251415815] [2022-09-16 11:52:11,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:52:11,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:52:11,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:52:11,589 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:52:11,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:52:11,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251415815] [2022-09-16 11:52:11,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251415815] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:52:11,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031379481] [2022-09-16 11:52:11,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:52:11,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:52:11,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:52:11,600 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:52:11,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-09-16 11:52:11,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:52:11,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 46 conjunts are in the unsatisfiable core [2022-09-16 11:52:11,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:52:11,713 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-16 11:52:11,733 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-09-16 11:52:11,733 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-09-16 11:52:11,970 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-16 11:52:11,971 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-09-16 11:52:12,168 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-09-16 11:52:12,328 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-09-16 11:52:12,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:52:12,370 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-09-16 11:52:12,389 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-09-16 11:52:12,391 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:52:12,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:52:12,452 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_253 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_253) c_~X_0~0.base) (+ c_~X_0~0.offset 4)) 9223372039002259456))) is different from false [2022-09-16 11:52:12,472 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_252 (Array Int Int)) (v_ArrVal_253 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_252) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_253) c_~X_0~0.base) (+ c_~X_0~0.offset 4)) 9223372039002259456))) is different from false [2022-09-16 11:52:12,481 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_252 (Array Int Int)) (v_ArrVal_253 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_252) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_253) |c_ULTIMATE.start_main_#t~ret27#1.base|) (+ |c_ULTIMATE.start_main_#t~ret27#1.offset| 4)) 9223372039002259456))) is different from false [2022-09-16 11:52:12,487 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_252 (Array Int Int)) (v_ArrVal_253 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_252) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_253) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) (+ |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset| 4)) 9223372039002259456))) is different from false [2022-09-16 11:52:12,491 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_252 (Array Int Int)) (v_ArrVal_253 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_252) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_253) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 9223372039002259456))) is different from false [2022-09-16 11:52:12,518 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:52:12,519 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-09-16 11:52:12,524 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:52:12,524 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 148 [2022-09-16 11:52:12,528 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 59 [2022-09-16 11:52:12,530 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 110 [2022-09-16 11:52:13,100 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 8 not checked. [2022-09-16 11:52:13,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031379481] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:52:13,101 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:52:13,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 47 [2022-09-16 11:52:13,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234094130] [2022-09-16 11:52:13,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:52:13,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-09-16 11:52:13,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:52:13,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-09-16 11:52:13,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1645, Unknown=5, NotChecked=430, Total=2256 [2022-09-16 11:52:13,104 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 238 [2022-09-16 11:52:13,108 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 229 transitions, 871 flow. Second operand has 48 states, 48 states have (on average 127.625) internal successors, (6126), 48 states have internal predecessors, (6126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:13,108 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:52:13,108 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 238 [2022-09-16 11:52:13,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:52:32,168 INFO L130 PetriNetUnfolder]: 69316/110367 cut-off events. [2022-09-16 11:52:32,168 INFO L131 PetriNetUnfolder]: For 99369/99369 co-relation queries the response was YES. [2022-09-16 11:52:33,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307334 conditions, 110367 events. 69316/110367 cut-off events. For 99369/99369 co-relation queries the response was YES. Maximal size of possible extension queue 3469. Compared 1014699 event pairs, 27721 based on Foata normal form. 510/86641 useless extension candidates. Maximal degree in co-relation 307149. Up to 44654 conditions per place. [2022-09-16 11:52:33,601 INFO L137 encePairwiseOnDemand]: 213/238 looper letters, 210 selfloop transitions, 43 changer transitions 0/351 dead transitions. [2022-09-16 11:52:33,601 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 351 transitions, 1831 flow [2022-09-16 11:52:33,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-09-16 11:52:33,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-09-16 11:52:33,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3223 transitions. [2022-09-16 11:52:33,603 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.564250700280112 [2022-09-16 11:52:33,604 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3223 transitions. [2022-09-16 11:52:33,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3223 transitions. [2022-09-16 11:52:33,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:52:33,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3223 transitions. [2022-09-16 11:52:33,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 134.29166666666666) internal successors, (3223), 24 states have internal predecessors, (3223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:33,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 238.0) internal successors, (5950), 25 states have internal predecessors, (5950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:33,614 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 238.0) internal successors, (5950), 25 states have internal predecessors, (5950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:33,614 INFO L175 Difference]: Start difference. First operand has 261 places, 229 transitions, 871 flow. Second operand 24 states and 3223 transitions. [2022-09-16 11:52:33,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 351 transitions, 1831 flow [2022-09-16 11:52:34,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 351 transitions, 1801 flow, removed 5 selfloop flow, removed 10 redundant places. [2022-09-16 11:52:34,198 INFO L231 Difference]: Finished difference. Result has 274 places, 233 transitions, 949 flow [2022-09-16 11:52:34,199 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=835, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=949, PETRI_PLACES=274, PETRI_TRANSITIONS=233} [2022-09-16 11:52:34,199 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, 72 predicate places. [2022-09-16 11:52:34,199 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 233 transitions, 949 flow [2022-09-16 11:52:34,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 127.625) internal successors, (6126), 48 states have internal predecessors, (6126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:34,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:52:34,201 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2022-09-16 11:52:34,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-09-16 11:52:34,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-09-16 11:52:34,418 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-09-16 11:52:34,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:52:34,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1389997745, now seen corresponding path program 1 times [2022-09-16 11:52:34,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:52:34,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165625973] [2022-09-16 11:52:34,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:52:34,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:52:34,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:52:34,866 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:52:34,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:52:34,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165625973] [2022-09-16 11:52:34,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165625973] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:52:34,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969574947] [2022-09-16 11:52:34,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:52:34,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:52:34,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:52:34,867 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:52:34,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-09-16 11:52:34,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:52:34,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 37 conjunts are in the unsatisfiable core [2022-09-16 11:52:34,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:52:35,190 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-09-16 11:52:35,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:52:35,334 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-09-16 11:52:35,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:52:35,418 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-09-16 11:52:35,450 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-09-16 11:52:35,452 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:52:35,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:52:35,498 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_293 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork2_~#t2~0.base| v_ArrVal_293) c_~X_0~0.base) (+ c_~X_0~0.offset 4 (* 4 c_~i_3~0))) 9223372039002259456))) is different from false [2022-09-16 11:52:35,504 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_293 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork2_~#t2~0.base| v_ArrVal_293) c_~X_0~0.base) (+ c_~X_0~0.offset 4)) 9223372039002259456))) is different from false [2022-09-16 11:52:37,525 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_thread1Thread1of1ForFork2_~#t2~0.base_18| Int)) (or (forall ((v_ArrVal_293 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |v_thread1Thread1of1ForFork2_~#t2~0.base_18| v_ArrVal_293) c_~X_0~0.base) (+ c_~X_0~0.offset 4)) 9223372039002259456))) (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork2_~#t2~0.base_18|)))) is different from false [2022-09-16 11:52:37,537 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_292 (Array Int Int)) (v_ArrVal_293 (Array Int Int)) (|v_thread1Thread1of1ForFork2_~#t2~0.base_18| Int)) (or (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork2_~#t2~0.base_18|)) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_292) |v_thread1Thread1of1ForFork2_~#t2~0.base_18| v_ArrVal_293) c_~X_0~0.base) (+ c_~X_0~0.offset 4)) 9223372039002259456)))) is different from false [2022-09-16 11:52:37,556 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_292 (Array Int Int)) (v_ArrVal_293 (Array Int Int)) (|v_thread1Thread1of1ForFork2_~#t2~0.base_18| Int)) (or (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork2_~#t2~0.base_18|)) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_292) |v_thread1Thread1of1ForFork2_~#t2~0.base_18| v_ArrVal_293) |c_ULTIMATE.start_main_#t~ret27#1.base|) (+ |c_ULTIMATE.start_main_#t~ret27#1.offset| 4)) 9223372039002259456)))) is different from false [2022-09-16 11:52:37,579 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_292 (Array Int Int)) (v_ArrVal_293 (Array Int Int)) (|v_thread1Thread1of1ForFork2_~#t2~0.base_18| Int)) (or (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_292) |v_thread1Thread1of1ForFork2_~#t2~0.base_18| v_ArrVal_293) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) (+ |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset| 4)) 9223372039002259456)) (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork2_~#t2~0.base_18|)))) is different from false [2022-09-16 11:52:37,587 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_292 (Array Int Int)) (v_ArrVal_293 (Array Int Int)) (|v_thread1Thread1of1ForFork2_~#t2~0.base_18| Int)) (or (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork2_~#t2~0.base_18|)) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_292) |v_thread1Thread1of1ForFork2_~#t2~0.base_18| v_ArrVal_293) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 9223372039002259456)))) is different from false [2022-09-16 11:52:37,629 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:52:37,629 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-09-16 11:52:37,636 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:52:37,636 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 148 [2022-09-16 11:52:37,641 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 118 [2022-09-16 11:52:37,644 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 110 [2022-09-16 11:52:37,935 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 8 not checked. [2022-09-16 11:52:37,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969574947] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:52:37,935 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:52:37,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 48 [2022-09-16 11:52:37,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201090693] [2022-09-16 11:52:37,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:52:37,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-09-16 11:52:37,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:52:37,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-09-16 11:52:37,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1566, Unknown=7, NotChecked=602, Total=2352 [2022-09-16 11:52:37,939 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 238 [2022-09-16 11:52:37,942 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 233 transitions, 949 flow. Second operand has 49 states, 49 states have (on average 134.57142857142858) internal successors, (6594), 49 states have internal predecessors, (6594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:37,942 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:52:37,942 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 238 [2022-09-16 11:52:37,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:52:40,834 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|)) (.cse2 (select |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|)) (.cse1 (select |c_#memory_int| c_~X_0~0.base))) (and (<= 0 (+ (select .cse0 4) 2147483648)) (<= 0 (+ (select .cse1 4) 2147483648)) (<= (+ c_~X_0~0.base 1) |c_#StackHeapBarrier|) (<= (+ |c_ULTIMATE.start_create_fresh_int_array_#res#1.base| 1) |c_#StackHeapBarrier|) (not (= |c_ULTIMATE.start_main_~#t1~0#1.base| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|)) (<= (+ |c_#StackHeapBarrier| 1) |c_ULTIMATE.start_main_~#t1~0#1.base|) (= |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset| 0) (<= 0 (+ (select .cse0 (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 2147483648)) (forall ((|v_thread1Thread1of1ForFork2_~#t2~0.base_18| Int)) (or (forall ((v_ArrVal_293 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |v_thread1Thread1of1ForFork2_~#t2~0.base_18| v_ArrVal_293) c_~X_0~0.base) (+ c_~X_0~0.offset 4)) 9223372039002259456))) (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork2_~#t2~0.base_18|)))) (not (= |c_ULTIMATE.start_main_~#t1~0#1.base| |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|)) (<= (+ |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 1) |c_#StackHeapBarrier|) (< c_~X_0~0.base |c_#StackHeapBarrier|) (not (= |c_ULTIMATE.start_main_~#t1~0#1.base| c_~X_0~0.base)) (< |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| |c_#StackHeapBarrier|) (<= 0 (+ (select .cse2 (+ |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset| 4)) 2147483648)) (= 0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) (< |c_ULTIMATE.start_create_fresh_int_array_#res#1.base| |c_#StackHeapBarrier|) (<= 0 (+ (select .cse2 4) 2147483648)) (<= 0 (+ (select .cse1 (+ c_~X_0~0.offset 4)) 2147483648)) (= c_~X_0~0.offset 0))) is different from false [2022-09-16 11:52:42,838 WARN L833 $PredicateComparison]: unable to prove that (and (<= 0 (+ (select (select |c_#memory_int| c_~X_0~0.base) 4) 2147483648)) (<= (+ c_~X_0~0.base 1) |c_#StackHeapBarrier|) (forall ((|v_thread1Thread1of1ForFork2_~#t2~0.base_18| Int)) (or (forall ((v_ArrVal_293 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |v_thread1Thread1of1ForFork2_~#t2~0.base_18| v_ArrVal_293) c_~X_0~0.base) (+ c_~X_0~0.offset 4)) 9223372039002259456))) (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork2_~#t2~0.base_18|)))) (= c_~X_0~0.offset 0)) is different from false