./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-min-array.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-min-array.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9abac63211b9980a3b9079d9eb140a85fbc6c5adec6517ed998cc9e140b19342 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 08:19:48,705 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 08:19:48,707 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 08:19:48,738 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 08:19:48,739 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 08:19:48,742 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 08:19:48,743 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 08:19:48,745 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 08:19:48,746 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 08:19:48,750 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 08:19:48,750 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 08:19:48,754 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 08:19:48,754 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 08:19:48,756 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 08:19:48,757 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 08:19:48,759 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 08:19:48,759 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 08:19:48,760 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 08:19:48,761 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 08:19:48,765 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 08:19:48,766 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 08:19:48,773 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 08:19:48,774 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 08:19:48,775 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 08:19:48,781 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 08:19:48,782 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 08:19:48,782 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 08:19:48,784 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 08:19:48,784 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 08:19:48,785 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 08:19:48,785 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 08:19:48,792 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 08:19:48,793 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 08:19:48,794 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 08:19:48,795 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 08:19:48,795 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 08:19:48,796 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 08:19:48,796 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 08:19:48,796 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 08:19:48,797 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 08:19:48,798 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 08:19:48,799 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 08:19:48,833 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 08:19:48,833 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 08:19:48,834 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 08:19:48,835 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 08:19:48,835 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 08:19:48,836 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 08:19:48,836 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 08:19:48,836 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 08:19:48,836 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 08:19:48,837 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 08:19:48,837 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 08:19:48,838 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 08:19:48,838 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 08:19:48,838 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 08:19:48,838 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 08:19:48,838 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 08:19:48,839 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 08:19:48,839 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 08:19:48,839 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 08:19:48,839 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 08:19:48,839 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 08:19:48,840 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 08:19:48,840 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 08:19:48,840 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 08:19:48,840 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 08:19:48,840 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 08:19:48,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:19:48,841 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 08:19:48,841 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 08:19:48,841 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 08:19:48,841 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 08:19:48,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 08:19:48,842 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 08:19:48,842 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 08:19:48,842 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 08:19:48,842 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 08:19:48,843 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 08:19:48,843 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9abac63211b9980a3b9079d9eb140a85fbc6c5adec6517ed998cc9e140b19342 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 08:19:49,144 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 08:19:49,180 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 08:19:49,182 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 08:19:49,183 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 08:19:49,183 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 08:19:49,184 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-min-array.wvr.c [2023-09-01 08:19:50,185 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 08:19:50,351 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 08:19:50,351 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-array.wvr.c [2023-09-01 08:19:50,356 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29d10e66b/2830b0fcf81943189c0c62a0bf2b612e/FLAGa3d68ef1d [2023-09-01 08:19:50,378 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29d10e66b/2830b0fcf81943189c0c62a0bf2b612e [2023-09-01 08:19:50,385 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 08:19:50,387 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 08:19:50,389 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 08:19:50,389 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 08:19:50,391 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 08:19:50,391 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:19:50" (1/1) ... [2023-09-01 08:19:50,392 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39846dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:19:50, skipping insertion in model container [2023-09-01 08:19:50,392 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:19:50" (1/1) ... [2023-09-01 08:19:50,397 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 08:19:50,412 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 08:19:50,551 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-array.wvr.c[2553,2566] [2023-09-01 08:19:50,560 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:19:50,566 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 08:19:50,597 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-array.wvr.c[2553,2566] [2023-09-01 08:19:50,600 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:19:50,605 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:19:50,605 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:19:50,611 INFO L208 MainTranslator]: Completed translation [2023-09-01 08:19:50,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:19:50 WrapperNode [2023-09-01 08:19:50,611 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 08:19:50,612 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 08:19:50,613 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 08:19:50,613 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 08:19:50,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:19:50" (1/1) ... [2023-09-01 08:19:50,632 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:19:50" (1/1) ... [2023-09-01 08:19:50,654 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 106 [2023-09-01 08:19:50,654 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 08:19:50,656 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 08:19:50,656 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 08:19:50,656 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 08:19:50,662 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:19:50" (1/1) ... [2023-09-01 08:19:50,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:19:50" (1/1) ... [2023-09-01 08:19:50,673 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:19:50" (1/1) ... [2023-09-01 08:19:50,675 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:19:50" (1/1) ... [2023-09-01 08:19:50,683 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:19:50" (1/1) ... [2023-09-01 08:19:50,690 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:19:50" (1/1) ... [2023-09-01 08:19:50,692 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:19:50" (1/1) ... [2023-09-01 08:19:50,697 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:19:50" (1/1) ... [2023-09-01 08:19:50,699 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 08:19:50,701 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 08:19:50,701 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 08:19:50,701 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 08:19:50,702 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:19:50" (1/1) ... [2023-09-01 08:19:50,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:19:50,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:19:50,724 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) [2023-09-01 08:19:50,744 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 [2023-09-01 08:19:50,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 08:19:50,751 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 08:19:50,751 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 08:19:50,751 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 08:19:50,751 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 08:19:50,751 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 08:19:50,752 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 08:19:50,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 08:19:50,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 08:19:50,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 08:19:50,752 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 08:19:50,752 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 08:19:50,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 08:19:50,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 08:19:50,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 08:19:50,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 08:19:50,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 08:19:50,754 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 08:19:50,872 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 08:19:50,874 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 08:19:51,150 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 08:19:51,198 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 08:19:51,198 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-09-01 08:19:51,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:19:51 BoogieIcfgContainer [2023-09-01 08:19:51,200 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 08:19:51,201 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 08:19:51,202 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 08:19:51,204 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 08:19:51,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 08:19:50" (1/3) ... [2023-09-01 08:19:51,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f8bf4fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:19:51, skipping insertion in model container [2023-09-01 08:19:51,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:19:50" (2/3) ... [2023-09-01 08:19:51,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f8bf4fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:19:51, skipping insertion in model container [2023-09-01 08:19:51,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:19:51" (3/3) ... [2023-09-01 08:19:51,205 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-array.wvr.c [2023-09-01 08:19:51,210 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 08:19:51,216 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 08:19:51,228 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-09-01 08:19:51,229 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 08:19:51,327 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 08:19:51,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 156 places, 158 transitions, 340 flow [2023-09-01 08:19:51,436 INFO L130 PetriNetUnfolder]: 12/155 cut-off events. [2023-09-01 08:19:51,436 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 08:19:51,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 155 events. 12/155 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 124 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 117. Up to 2 conditions per place. [2023-09-01 08:19:51,443 INFO L82 GeneralOperation]: Start removeDead. Operand has 156 places, 158 transitions, 340 flow [2023-09-01 08:19:51,447 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 137 transitions, 289 flow [2023-09-01 08:19:51,457 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 08:19:51,470 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 136 places, 137 transitions, 289 flow [2023-09-01 08:19:51,472 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 136 places, 137 transitions, 289 flow [2023-09-01 08:19:51,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 137 transitions, 289 flow [2023-09-01 08:19:51,515 INFO L130 PetriNetUnfolder]: 11/137 cut-off events. [2023-09-01 08:19:51,519 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 08:19:51,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 137 events. 11/137 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 122 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 117. Up to 2 conditions per place. [2023-09-01 08:19:51,532 INFO L119 LiptonReduction]: Number of co-enabled transitions 2184 [2023-09-01 08:19:56,037 INFO L134 LiptonReduction]: Checked pairs total: 2568 [2023-09-01 08:19:56,037 INFO L136 LiptonReduction]: Total number of compositions: 140 [2023-09-01 08:19:56,048 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 08:19:56,052 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=true, 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;@6e028671, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 08:19:56,053 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-09-01 08:19:56,054 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-09-01 08:19:56,054 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 08:19:56,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:19:56,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 08:19:56,055 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-09-01 08:19:56,058 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:19:56,058 INFO L85 PathProgramCache]: Analyzing trace with hash 20422, now seen corresponding path program 1 times [2023-09-01 08:19:56,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:19:56,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764598872] [2023-09-01 08:19:56,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:19:56,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:19:56,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:19:56,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:19:56,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:19:56,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764598872] [2023-09-01 08:19:56,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764598872] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:19:56,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:19:56,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:19:56,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608438556] [2023-09-01 08:19:56,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:19:56,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:19:56,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:19:56,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:19:56,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:19:56,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 298 [2023-09-01 08:19:56,342 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 30 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:19:56,342 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:19:56,343 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 298 [2023-09-01 08:19:56,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:19:56,684 INFO L130 PetriNetUnfolder]: 2489/3235 cut-off events. [2023-09-01 08:19:56,685 INFO L131 PetriNetUnfolder]: For 92/92 co-relation queries the response was YES. [2023-09-01 08:19:56,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6603 conditions, 3235 events. 2489/3235 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 13748 event pairs, 1164 based on Foata normal form. 0/1174 useless extension candidates. Maximal degree in co-relation 2845. Up to 1619 conditions per place. [2023-09-01 08:19:56,703 INFO L137 encePairwiseOnDemand]: 294/298 looper letters, 49 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2023-09-01 08:19:56,703 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 54 transitions, 240 flow [2023-09-01 08:19:56,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:19:56,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:19:56,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 464 transitions. [2023-09-01 08:19:56,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5190156599552572 [2023-09-01 08:19:56,720 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 464 transitions. [2023-09-01 08:19:56,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 464 transitions. [2023-09-01 08:19:56,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:19:56,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 464 transitions. [2023-09-01 08:19:56,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:19:56,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:19:56,733 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:19:56,734 INFO L175 Difference]: Start difference. First operand has 36 places, 30 transitions, 75 flow. Second operand 3 states and 464 transitions. [2023-09-01 08:19:56,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 54 transitions, 240 flow [2023-09-01 08:19:56,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 54 transitions, 222 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-09-01 08:19:56,741 INFO L231 Difference]: Finished difference. Result has 34 places, 31 transitions, 80 flow [2023-09-01 08:19:56,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=34, PETRI_TRANSITIONS=31} [2023-09-01 08:19:56,747 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2023-09-01 08:19:56,749 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 31 transitions, 80 flow [2023-09-01 08:19:56,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:19:56,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:19:56,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 08:19:56,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 08:19:56,751 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-09-01 08:19:56,756 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:19:56,757 INFO L85 PathProgramCache]: Analyzing trace with hash 634470, now seen corresponding path program 1 times [2023-09-01 08:19:56,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:19:56,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22066180] [2023-09-01 08:19:56,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:19:56,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:19:56,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:19:56,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:19:56,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:19:56,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22066180] [2023-09-01 08:19:56,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22066180] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:19:56,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388210516] [2023-09-01 08:19:56,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:19:56,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:19:56,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:19:56,838 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) [2023-09-01 08:19:56,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 08:19:56,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:19:56,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:19:56,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:19:56,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:19:56,940 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:19:56,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388210516] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:19:56,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:19:56,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-09-01 08:19:56,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136996914] [2023-09-01 08:19:56,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:19:56,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:19:56,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:19:56,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:19:56,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 08:19:56,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 298 [2023-09-01 08:19:56,955 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 31 transitions, 80 flow. Second operand has 4 states, 4 states have (on average 137.75) internal successors, (551), 4 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:19:56,955 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:19:56,955 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 298 [2023-09-01 08:19:56,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:19:57,256 INFO L130 PetriNetUnfolder]: 2489/3234 cut-off events. [2023-09-01 08:19:57,256 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 08:19:57,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6533 conditions, 3234 events. 2489/3234 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 13659 event pairs, 1164 based on Foata normal form. 0/1176 useless extension candidates. Maximal degree in co-relation 3317. Up to 1619 conditions per place. [2023-09-01 08:19:57,268 INFO L137 encePairwiseOnDemand]: 295/298 looper letters, 48 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2023-09-01 08:19:57,268 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 53 transitions, 228 flow [2023-09-01 08:19:57,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:19:57,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:19:57,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 599 transitions. [2023-09-01 08:19:57,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.50251677852349 [2023-09-01 08:19:57,270 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 599 transitions. [2023-09-01 08:19:57,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 599 transitions. [2023-09-01 08:19:57,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:19:57,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 599 transitions. [2023-09-01 08:19:57,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 149.75) internal successors, (599), 4 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) [2023-09-01 08:19:57,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 298.0) internal successors, (1490), 5 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:19:57,274 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 298.0) internal successors, (1490), 5 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:19:57,274 INFO L175 Difference]: Start difference. First operand has 34 places, 31 transitions, 80 flow. Second operand 4 states and 599 transitions. [2023-09-01 08:19:57,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 53 transitions, 228 flow [2023-09-01 08:19:57,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 53 transitions, 226 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:19:57,276 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 78 flow [2023-09-01 08:19:57,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=78, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2023-09-01 08:19:57,277 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -1 predicate places. [2023-09-01 08:19:57,277 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 78 flow [2023-09-01 08:19:57,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 137.75) internal successors, (551), 4 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:19:57,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:19:57,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 08:19:57,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 08:19:57,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:19:57,483 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-09-01 08:19:57,483 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:19:57,484 INFO L85 PathProgramCache]: Analyzing trace with hash 634482, now seen corresponding path program 1 times [2023-09-01 08:19:57,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:19:57,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513896478] [2023-09-01 08:19:57,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:19:57,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:19:57,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:19:57,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:19:57,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:19:57,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513896478] [2023-09-01 08:19:57,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513896478] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:19:57,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308201219] [2023-09-01 08:19:57,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:19:57,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:19:57,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:19:57,565 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) [2023-09-01 08:19:57,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 08:19:57,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:19:57,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:19:57,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:19:57,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:19:57,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:19:57,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:19:57,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308201219] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:19:57,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:19:57,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-09-01 08:19:57,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135558746] [2023-09-01 08:19:57,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:19:57,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 08:19:57,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:19:57,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 08:19:57,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:19:57,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 298 [2023-09-01 08:19:57,682 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 78 flow. Second operand has 7 states, 7 states have (on average 138.14285714285714) internal successors, (967), 7 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:19:57,682 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:19:57,682 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 298 [2023-09-01 08:19:57,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:19:58,301 INFO L130 PetriNetUnfolder]: 6137/7998 cut-off events. [2023-09-01 08:19:58,302 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2023-09-01 08:19:58,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16140 conditions, 7998 events. 6137/7998 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 38519 event pairs, 2895 based on Foata normal form. 0/2925 useless extension candidates. Maximal degree in co-relation 12811. Up to 1619 conditions per place. [2023-09-01 08:19:58,333 INFO L137 encePairwiseOnDemand]: 295/298 looper letters, 117 selfloop transitions, 5 changer transitions 0/125 dead transitions. [2023-09-01 08:19:58,333 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 125 transitions, 542 flow [2023-09-01 08:19:58,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 08:19:58,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 08:19:58,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 947 transitions. [2023-09-01 08:19:58,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5296420581655481 [2023-09-01 08:19:58,336 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 947 transitions. [2023-09-01 08:19:58,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 947 transitions. [2023-09-01 08:19:58,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:19:58,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 947 transitions. [2023-09-01 08:19:58,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 157.83333333333334) internal successors, (947), 6 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:19:58,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 298.0) internal successors, (2086), 7 states have internal predecessors, (2086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:19:58,340 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 298.0) internal successors, (2086), 7 states have internal predecessors, (2086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:19:58,341 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 78 flow. Second operand 6 states and 947 transitions. [2023-09-01 08:19:58,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 125 transitions, 542 flow [2023-09-01 08:19:58,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 125 transitions, 539 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:19:58,342 INFO L231 Difference]: Finished difference. Result has 41 places, 33 transitions, 111 flow [2023-09-01 08:19:58,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=111, PETRI_PLACES=41, PETRI_TRANSITIONS=33} [2023-09-01 08:19:58,343 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 5 predicate places. [2023-09-01 08:19:58,343 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 33 transitions, 111 flow [2023-09-01 08:19:58,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 138.14285714285714) internal successors, (967), 7 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:19:58,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:19:58,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 08:19:58,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 08:19:58,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-09-01 08:19:58,549 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-09-01 08:19:58,550 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:19:58,550 INFO L85 PathProgramCache]: Analyzing trace with hash 609387501, now seen corresponding path program 1 times [2023-09-01 08:19:58,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:19:58,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401621017] [2023-09-01 08:19:58,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:19:58,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:19:58,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:19:58,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:19:58,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:19:58,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401621017] [2023-09-01 08:19:58,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401621017] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:19:58,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:19:58,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:19:58,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323872390] [2023-09-01 08:19:58,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:19:58,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:19:58,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:19:58,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:19:58,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:19:58,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 298 [2023-09-01 08:19:58,611 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:19:58,611 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:19:58,611 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 298 [2023-09-01 08:19:58,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:19:59,366 INFO L130 PetriNetUnfolder]: 8376/11157 cut-off events. [2023-09-01 08:19:59,367 INFO L131 PetriNetUnfolder]: For 121/121 co-relation queries the response was YES. [2023-09-01 08:19:59,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22601 conditions, 11157 events. 8376/11157 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 807. Compared 59866 event pairs, 1935 based on Foata normal form. 0/4582 useless extension candidates. Maximal degree in co-relation 18073. Up to 7123 conditions per place. [2023-09-01 08:19:59,409 INFO L137 encePairwiseOnDemand]: 294/298 looper letters, 48 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2023-09-01 08:19:59,409 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 52 transitions, 254 flow [2023-09-01 08:19:59,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:19:59,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:19:59,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 462 transitions. [2023-09-01 08:19:59,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5167785234899329 [2023-09-01 08:19:59,411 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 462 transitions. [2023-09-01 08:19:59,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 462 transitions. [2023-09-01 08:19:59,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:19:59,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 462 transitions. [2023-09-01 08:19:59,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:19:59,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:19:59,414 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:19:59,414 INFO L175 Difference]: Start difference. First operand has 41 places, 33 transitions, 111 flow. Second operand 3 states and 462 transitions. [2023-09-01 08:19:59,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 52 transitions, 254 flow [2023-09-01 08:19:59,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 52 transitions, 246 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-09-01 08:19:59,416 INFO L231 Difference]: Finished difference. Result has 43 places, 34 transitions, 117 flow [2023-09-01 08:19:59,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=43, PETRI_TRANSITIONS=34} [2023-09-01 08:19:59,416 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 7 predicate places. [2023-09-01 08:19:59,416 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 34 transitions, 117 flow [2023-09-01 08:19:59,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:19:59,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:19:59,417 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-09-01 08:19:59,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 08:19:59,417 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-09-01 08:19:59,418 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:19:59,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1723004882, now seen corresponding path program 2 times [2023-09-01 08:19:59,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:19:59,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110901888] [2023-09-01 08:19:59,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:19:59,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:19:59,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:19:59,510 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:19:59,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:19:59,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110901888] [2023-09-01 08:19:59,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110901888] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:19:59,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828242003] [2023-09-01 08:19:59,511 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:19:59,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:19:59,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:19:59,512 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) [2023-09-01 08:19:59,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 08:19:59,576 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:19:59,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:19:59,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 08:19:59,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:19:59,591 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 08:19:59,591 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:19:59,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828242003] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:19:59,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:19:59,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-09-01 08:19:59,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653304491] [2023-09-01 08:19:59,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:19:59,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:19:59,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:19:59,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:19:59,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 08:19:59,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 298 [2023-09-01 08:19:59,602 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 117 flow. Second operand has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:19:59,602 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:19:59,602 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 298 [2023-09-01 08:19:59,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:20:00,212 INFO L130 PetriNetUnfolder]: 7346/9821 cut-off events. [2023-09-01 08:20:00,212 INFO L131 PetriNetUnfolder]: For 613/888 co-relation queries the response was YES. [2023-09-01 08:20:00,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21288 conditions, 9821 events. 7346/9821 cut-off events. For 613/888 co-relation queries the response was YES. Maximal size of possible extension queue 726. Compared 52457 event pairs, 3945 based on Foata normal form. 276/4712 useless extension candidates. Maximal degree in co-relation 17020. Up to 9681 conditions per place. [2023-09-01 08:20:00,251 INFO L137 encePairwiseOnDemand]: 296/298 looper letters, 29 selfloop transitions, 1 changer transitions 0/33 dead transitions. [2023-09-01 08:20:00,251 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 33 transitions, 167 flow [2023-09-01 08:20:00,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:20:00,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:20:00,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 440 transitions. [2023-09-01 08:20:00,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49217002237136465 [2023-09-01 08:20:00,253 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 440 transitions. [2023-09-01 08:20:00,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 440 transitions. [2023-09-01 08:20:00,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:20:00,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 440 transitions. [2023-09-01 08:20:00,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:00,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:00,256 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:00,257 INFO L175 Difference]: Start difference. First operand has 43 places, 34 transitions, 117 flow. Second operand 3 states and 440 transitions. [2023-09-01 08:20:00,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 33 transitions, 167 flow [2023-09-01 08:20:00,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 33 transitions, 155 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-09-01 08:20:00,259 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 97 flow [2023-09-01 08:20:00,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2023-09-01 08:20:00,259 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 3 predicate places. [2023-09-01 08:20:00,259 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 97 flow [2023-09-01 08:20:00,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:00,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:20:00,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 08:20:00,267 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-09-01 08:20:00,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:20:00,466 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-09-01 08:20:00,466 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:20:00,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1711144876, now seen corresponding path program 1 times [2023-09-01 08:20:00,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:20:00,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234136292] [2023-09-01 08:20:00,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:00,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:20:00,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:00,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:20:00,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:20:00,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234136292] [2023-09-01 08:20:00,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234136292] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:20:00,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729028119] [2023-09-01 08:20:00,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:00,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:20:00,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:20:00,521 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) [2023-09-01 08:20:00,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 08:20:00,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:00,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 08:20:00,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:20:00,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:20:00,620 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:20:00,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729028119] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:20:00,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:20:00,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2023-09-01 08:20:00,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561734413] [2023-09-01 08:20:00,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:20:00,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 08:20:00,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:20:00,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 08:20:00,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:20:00,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 298 [2023-09-01 08:20:00,661 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 132.2) internal successors, (661), 5 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:00,661 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:20:00,661 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 298 [2023-09-01 08:20:00,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:20:01,228 INFO L130 PetriNetUnfolder]: 6597/8822 cut-off events. [2023-09-01 08:20:01,229 INFO L131 PetriNetUnfolder]: For 708/708 co-relation queries the response was YES. [2023-09-01 08:20:01,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18977 conditions, 8822 events. 6597/8822 cut-off events. For 708/708 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 46255 event pairs, 3596 based on Foata normal form. 1/4067 useless extension candidates. Maximal degree in co-relation 18968. Up to 8690 conditions per place. [2023-09-01 08:20:01,271 INFO L137 encePairwiseOnDemand]: 295/298 looper letters, 29 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2023-09-01 08:20:01,272 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 33 transitions, 159 flow [2023-09-01 08:20:01,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:20:01,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:20:01,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 421 transitions. [2023-09-01 08:20:01,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.470917225950783 [2023-09-01 08:20:01,273 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 421 transitions. [2023-09-01 08:20:01,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 421 transitions. [2023-09-01 08:20:01,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:20:01,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 421 transitions. [2023-09-01 08:20:01,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:01,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:01,276 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:01,276 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 97 flow. Second operand 3 states and 421 transitions. [2023-09-01 08:20:01,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 33 transitions, 159 flow [2023-09-01 08:20:01,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 33 transitions, 156 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-09-01 08:20:01,278 INFO L231 Difference]: Finished difference. Result has 41 places, 33 transitions, 102 flow [2023-09-01 08:20:01,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=41, PETRI_TRANSITIONS=33} [2023-09-01 08:20:01,279 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 5 predicate places. [2023-09-01 08:20:01,279 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 33 transitions, 102 flow [2023-09-01 08:20:01,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 132.2) internal successors, (661), 5 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:01,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:20:01,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:20:01,287 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-09-01 08:20:01,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:20:01,485 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-09-01 08:20:01,485 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:20:01,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1861684793, now seen corresponding path program 1 times [2023-09-01 08:20:01,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:20:01,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050570351] [2023-09-01 08:20:01,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:01,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:20:01,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:01,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:20:01,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:20:01,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050570351] [2023-09-01 08:20:01,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050570351] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:20:01,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:20:01,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:20:01,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315525026] [2023-09-01 08:20:01,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:20:01,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:20:01,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:20:01,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:20:01,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:20:01,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 298 [2023-09-01 08:20:01,533 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:01,533 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:20:01,534 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 298 [2023-09-01 08:20:01,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:20:02,047 INFO L130 PetriNetUnfolder]: 6409/8386 cut-off events. [2023-09-01 08:20:02,047 INFO L131 PetriNetUnfolder]: For 864/864 co-relation queries the response was YES. [2023-09-01 08:20:02,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18012 conditions, 8386 events. 6409/8386 cut-off events. For 864/864 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 39015 event pairs, 2460 based on Foata normal form. 0/3982 useless extension candidates. Maximal degree in co-relation 18001. Up to 7616 conditions per place. [2023-09-01 08:20:02,079 INFO L137 encePairwiseOnDemand]: 296/298 looper letters, 42 selfloop transitions, 1 changer transitions 0/45 dead transitions. [2023-09-01 08:20:02,079 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 45 transitions, 213 flow [2023-09-01 08:20:02,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:20:02,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:20:02,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 453 transitions. [2023-09-01 08:20:02,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5067114093959731 [2023-09-01 08:20:02,081 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 453 transitions. [2023-09-01 08:20:02,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 453 transitions. [2023-09-01 08:20:02,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:20:02,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 453 transitions. [2023-09-01 08:20:02,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:02,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:02,084 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:02,084 INFO L175 Difference]: Start difference. First operand has 41 places, 33 transitions, 102 flow. Second operand 3 states and 453 transitions. [2023-09-01 08:20:02,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 45 transitions, 213 flow [2023-09-01 08:20:02,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 45 transitions, 209 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:20:02,085 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 96 flow [2023-09-01 08:20:02,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=40, PETRI_TRANSITIONS=32} [2023-09-01 08:20:02,086 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 4 predicate places. [2023-09-01 08:20:02,086 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 96 flow [2023-09-01 08:20:02,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:02,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:20:02,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:20:02,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 08:20:02,087 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-09-01 08:20:02,087 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:20:02,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1861684812, now seen corresponding path program 1 times [2023-09-01 08:20:02,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:20:02,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743949512] [2023-09-01 08:20:02,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:02,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:20:02,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:02,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:20:02,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:20:02,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743949512] [2023-09-01 08:20:02,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743949512] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:20:02,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251005217] [2023-09-01 08:20:02,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:02,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:20:02,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:20:02,130 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) [2023-09-01 08:20:02,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 08:20:02,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:02,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:20:02,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:20:02,221 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:20:02,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:20:02,236 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:20:02,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251005217] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:20:02,236 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:20:02,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-09-01 08:20:02,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706874610] [2023-09-01 08:20:02,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:20:02,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 08:20:02,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:20:02,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 08:20:02,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:20:02,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 298 [2023-09-01 08:20:02,254 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 96 flow. Second operand has 7 states, 7 states have (on average 139.71428571428572) internal successors, (978), 7 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:02,254 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:20:02,254 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 298 [2023-09-01 08:20:02,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:20:03,275 INFO L130 PetriNetUnfolder]: 13477/17662 cut-off events. [2023-09-01 08:20:03,275 INFO L131 PetriNetUnfolder]: For 940/940 co-relation queries the response was YES. [2023-09-01 08:20:03,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37738 conditions, 17662 events. 13477/17662 cut-off events. For 940/940 co-relation queries the response was YES. Maximal size of possible extension queue 1053. Compared 97752 event pairs, 1996 based on Foata normal form. 0/8594 useless extension candidates. Maximal degree in co-relation 37728. Up to 5067 conditions per place. [2023-09-01 08:20:03,336 INFO L137 encePairwiseOnDemand]: 295/298 looper letters, 100 selfloop transitions, 5 changer transitions 0/107 dead transitions. [2023-09-01 08:20:03,336 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 107 transitions, 482 flow [2023-09-01 08:20:03,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 08:20:03,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 08:20:03,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 932 transitions. [2023-09-01 08:20:03,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212527964205816 [2023-09-01 08:20:03,339 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 932 transitions. [2023-09-01 08:20:03,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 932 transitions. [2023-09-01 08:20:03,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:20:03,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 932 transitions. [2023-09-01 08:20:03,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 155.33333333333334) internal successors, (932), 6 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) [2023-09-01 08:20:03,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 298.0) internal successors, (2086), 7 states have internal predecessors, (2086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:03,343 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 298.0) internal successors, (2086), 7 states have internal predecessors, (2086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:03,343 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 96 flow. Second operand 6 states and 932 transitions. [2023-09-01 08:20:03,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 107 transitions, 482 flow [2023-09-01 08:20:03,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 107 transitions, 481 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:20:03,345 INFO L231 Difference]: Finished difference. Result has 47 places, 35 transitions, 131 flow [2023-09-01 08:20:03,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=131, PETRI_PLACES=47, PETRI_TRANSITIONS=35} [2023-09-01 08:20:03,346 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 11 predicate places. [2023-09-01 08:20:03,346 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 35 transitions, 131 flow [2023-09-01 08:20:03,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 139.71428571428572) internal successors, (978), 7 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:03,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:20:03,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:20:03,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-09-01 08:20:03,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:20:03,554 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-09-01 08:20:03,554 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:20:03,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1882527800, now seen corresponding path program 1 times [2023-09-01 08:20:03,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:20:03,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261990411] [2023-09-01 08:20:03,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:03,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:20:03,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:03,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:20:03,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:20:03,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261990411] [2023-09-01 08:20:03,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261990411] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:20:03,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:20:03,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:20:03,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125971129] [2023-09-01 08:20:03,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:20:03,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:20:03,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:20:03,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:20:03,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:20:03,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 298 [2023-09-01 08:20:03,595 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 35 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:03,595 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:20:03,595 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 298 [2023-09-01 08:20:03,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:20:04,882 INFO L130 PetriNetUnfolder]: 14673/20270 cut-off events. [2023-09-01 08:20:04,883 INFO L131 PetriNetUnfolder]: For 14532/15196 co-relation queries the response was YES. [2023-09-01 08:20:04,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46929 conditions, 20270 events. 14673/20270 cut-off events. For 14532/15196 co-relation queries the response was YES. Maximal size of possible extension queue 1325. Compared 126868 event pairs, 6792 based on Foata normal form. 664/12446 useless extension candidates. Maximal degree in co-relation 46916. Up to 14139 conditions per place. [2023-09-01 08:20:05,008 INFO L137 encePairwiseOnDemand]: 294/298 looper letters, 51 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2023-09-01 08:20:05,008 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 55 transitions, 315 flow [2023-09-01 08:20:05,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:20:05,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:20:05,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 457 transitions. [2023-09-01 08:20:05,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5111856823266219 [2023-09-01 08:20:05,010 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 457 transitions. [2023-09-01 08:20:05,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 457 transitions. [2023-09-01 08:20:05,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:20:05,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 457 transitions. [2023-09-01 08:20:05,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:05,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:05,015 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:05,016 INFO L175 Difference]: Start difference. First operand has 47 places, 35 transitions, 131 flow. Second operand 3 states and 457 transitions. [2023-09-01 08:20:05,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 55 transitions, 315 flow [2023-09-01 08:20:05,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 55 transitions, 300 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-09-01 08:20:05,024 INFO L231 Difference]: Finished difference. Result has 49 places, 36 transitions, 137 flow [2023-09-01 08:20:05,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=137, PETRI_PLACES=49, PETRI_TRANSITIONS=36} [2023-09-01 08:20:05,024 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 13 predicate places. [2023-09-01 08:20:05,025 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 36 transitions, 137 flow [2023-09-01 08:20:05,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:05,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:20:05,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:20:05,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 08:20:05,025 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-09-01 08:20:05,026 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:20:05,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1771179448, now seen corresponding path program 1 times [2023-09-01 08:20:05,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:20:05,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377132274] [2023-09-01 08:20:05,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:05,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:20:05,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:05,068 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:20:05,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:20:05,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377132274] [2023-09-01 08:20:05,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377132274] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:20:05,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237779730] [2023-09-01 08:20:05,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:05,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:20:05,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:20:05,070 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) [2023-09-01 08:20:05,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 08:20:05,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:05,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:20:05,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:20:05,153 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:20:05,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:20:05,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:20:05,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237779730] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:20:05,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:20:05,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-09-01 08:20:05,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140716923] [2023-09-01 08:20:05,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:20:05,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 08:20:05,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:20:05,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 08:20:05,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:20:05,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 298 [2023-09-01 08:20:05,183 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 36 transitions, 137 flow. Second operand has 7 states, 7 states have (on average 140.0) internal successors, (980), 7 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:05,183 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:20:05,183 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 298 [2023-09-01 08:20:05,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:20:07,707 INFO L130 PetriNetUnfolder]: 30177/40742 cut-off events. [2023-09-01 08:20:07,707 INFO L131 PetriNetUnfolder]: For 24340/25580 co-relation queries the response was YES. [2023-09-01 08:20:07,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100031 conditions, 40742 events. 30177/40742 cut-off events. For 24340/25580 co-relation queries the response was YES. Maximal size of possible extension queue 2181. Compared 261302 event pairs, 4292 based on Foata normal form. 1240/27406 useless extension candidates. Maximal degree in co-relation 100016. Up to 11383 conditions per place. [2023-09-01 08:20:07,911 INFO L137 encePairwiseOnDemand]: 294/298 looper letters, 123 selfloop transitions, 9 changer transitions 0/134 dead transitions. [2023-09-01 08:20:07,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 134 transitions, 763 flow [2023-09-01 08:20:07,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 08:20:07,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 08:20:07,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1073 transitions. [2023-09-01 08:20:07,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5143815915627996 [2023-09-01 08:20:07,917 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1073 transitions. [2023-09-01 08:20:07,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1073 transitions. [2023-09-01 08:20:07,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:20:07,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1073 transitions. [2023-09-01 08:20:07,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 153.28571428571428) internal successors, (1073), 7 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:07,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 298.0) internal successors, (2384), 8 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:07,924 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 298.0) internal successors, (2384), 8 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:07,924 INFO L175 Difference]: Start difference. First operand has 49 places, 36 transitions, 137 flow. Second operand 7 states and 1073 transitions. [2023-09-01 08:20:07,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 134 transitions, 763 flow [2023-09-01 08:20:07,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 134 transitions, 761 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:20:07,938 INFO L231 Difference]: Finished difference. Result has 57 places, 42 transitions, 194 flow [2023-09-01 08:20:07,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=194, PETRI_PLACES=57, PETRI_TRANSITIONS=42} [2023-09-01 08:20:07,939 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 21 predicate places. [2023-09-01 08:20:07,939 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 42 transitions, 194 flow [2023-09-01 08:20:07,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 140.0) internal successors, (980), 7 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:07,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:20:07,941 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:20:07,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-09-01 08:20:08,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:20:08,146 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-09-01 08:20:08,146 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:20:08,146 INFO L85 PathProgramCache]: Analyzing trace with hash 928012855, now seen corresponding path program 1 times [2023-09-01 08:20:08,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:20:08,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337278656] [2023-09-01 08:20:08,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:08,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:20:08,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:08,183 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:20:08,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:20:08,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337278656] [2023-09-01 08:20:08,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337278656] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:20:08,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368704359] [2023-09-01 08:20:08,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:08,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:20:08,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:20:08,185 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) [2023-09-01 08:20:08,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-09-01 08:20:08,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:08,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 08:20:08,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:20:08,306 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:20:08,306 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:20:08,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368704359] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:20:08,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:20:08,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-09-01 08:20:08,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791199606] [2023-09-01 08:20:08,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:20:08,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 08:20:08,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:20:08,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 08:20:08,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-09-01 08:20:08,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 298 [2023-09-01 08:20:08,316 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 42 transitions, 194 flow. Second operand has 5 states, 5 states have (on average 140.0) internal successors, (700), 5 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:08,316 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:20:08,317 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 298 [2023-09-01 08:20:08,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:20:10,413 INFO L130 PetriNetUnfolder]: 26221/36058 cut-off events. [2023-09-01 08:20:10,414 INFO L131 PetriNetUnfolder]: For 22860/24012 co-relation queries the response was YES. [2023-09-01 08:20:10,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95130 conditions, 36058 events. 26221/36058 cut-off events. For 22860/24012 co-relation queries the response was YES. Maximal size of possible extension queue 2009. Compared 243002 event pairs, 824 based on Foata normal form. 2608/28342 useless extension candidates. Maximal degree in co-relation 95112. Up to 21804 conditions per place. [2023-09-01 08:20:10,659 INFO L137 encePairwiseOnDemand]: 295/298 looper letters, 87 selfloop transitions, 3 changer transitions 0/92 dead transitions. [2023-09-01 08:20:10,659 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 92 transitions, 547 flow [2023-09-01 08:20:10,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 08:20:10,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 08:20:10,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 760 transitions. [2023-09-01 08:20:10,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5100671140939598 [2023-09-01 08:20:10,663 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 760 transitions. [2023-09-01 08:20:10,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 760 transitions. [2023-09-01 08:20:10,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:20:10,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 760 transitions. [2023-09-01 08:20:10,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:10,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 298.0) internal successors, (1788), 6 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:10,666 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 298.0) internal successors, (1788), 6 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:10,667 INFO L175 Difference]: Start difference. First operand has 57 places, 42 transitions, 194 flow. Second operand 5 states and 760 transitions. [2023-09-01 08:20:10,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 92 transitions, 547 flow [2023-09-01 08:20:11,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 92 transitions, 539 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-09-01 08:20:11,135 INFO L231 Difference]: Finished difference. Result has 58 places, 38 transitions, 165 flow [2023-09-01 08:20:11,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=165, PETRI_PLACES=58, PETRI_TRANSITIONS=38} [2023-09-01 08:20:11,135 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 22 predicate places. [2023-09-01 08:20:11,135 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 38 transitions, 165 flow [2023-09-01 08:20:11,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 140.0) internal successors, (700), 5 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:11,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:20:11,136 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-09-01 08:20:11,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-09-01 08:20:11,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:20:11,341 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-09-01 08:20:11,342 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:20:11,342 INFO L85 PathProgramCache]: Analyzing trace with hash 541059341, now seen corresponding path program 2 times [2023-09-01 08:20:11,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:20:11,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841655355] [2023-09-01 08:20:11,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:11,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:20:11,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:11,439 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 08:20:11,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:20:11,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841655355] [2023-09-01 08:20:11,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841655355] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:20:11,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917821081] [2023-09-01 08:20:11,440 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:20:11,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:20:11,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:20:11,441 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:20:11,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-09-01 08:20:11,510 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:20:11,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:20:11,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:20:11,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:20:11,526 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-09-01 08:20:11,526 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:20:11,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917821081] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:20:11,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:20:11,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-09-01 08:20:11,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838842518] [2023-09-01 08:20:11,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:20:11,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:20:11,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:20:11,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:20:11,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:20:11,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 298 [2023-09-01 08:20:11,537 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 38 transitions, 165 flow. Second operand has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:11,537 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:20:11,537 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 298 [2023-09-01 08:20:11,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:20:13,369 INFO L130 PetriNetUnfolder]: 17365/24434 cut-off events. [2023-09-01 08:20:13,369 INFO L131 PetriNetUnfolder]: For 29824/31696 co-relation queries the response was YES. [2023-09-01 08:20:13,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62831 conditions, 24434 events. 17365/24434 cut-off events. For 29824/31696 co-relation queries the response was YES. Maximal size of possible extension queue 1386. Compared 160321 event pairs, 12052 based on Foata normal form. 2320/20874 useless extension candidates. Maximal degree in co-relation 62812. Up to 24286 conditions per place. [2023-09-01 08:20:13,490 INFO L137 encePairwiseOnDemand]: 295/298 looper letters, 32 selfloop transitions, 1 changer transitions 0/36 dead transitions. [2023-09-01 08:20:13,491 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 36 transitions, 219 flow [2023-09-01 08:20:13,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:20:13,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:20:13,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 437 transitions. [2023-09-01 08:20:13,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4888143176733781 [2023-09-01 08:20:13,492 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 437 transitions. [2023-09-01 08:20:13,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 437 transitions. [2023-09-01 08:20:13,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:20:13,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 437 transitions. [2023-09-01 08:20:13,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:13,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:13,494 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:13,495 INFO L175 Difference]: Start difference. First operand has 58 places, 38 transitions, 165 flow. Second operand 3 states and 437 transitions. [2023-09-01 08:20:13,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 36 transitions, 219 flow [2023-09-01 08:20:13,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 36 transitions, 204 flow, removed 1 selfloop flow, removed 7 redundant places. [2023-09-01 08:20:13,529 INFO L231 Difference]: Finished difference. Result has 51 places, 36 transitions, 140 flow [2023-09-01 08:20:13,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=51, PETRI_TRANSITIONS=36} [2023-09-01 08:20:13,530 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 15 predicate places. [2023-09-01 08:20:13,530 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 36 transitions, 140 flow [2023-09-01 08:20:13,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:13,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:20:13,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:20:13,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-09-01 08:20:13,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-09-01 08:20:13,737 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-09-01 08:20:13,737 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:20:13,737 INFO L85 PathProgramCache]: Analyzing trace with hash 932526832, now seen corresponding path program 1 times [2023-09-01 08:20:13,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:20:13,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087864623] [2023-09-01 08:20:13,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:13,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:20:13,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:13,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:20:13,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:20:13,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087864623] [2023-09-01 08:20:13,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087864623] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:20:13,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:20:13,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:20:13,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963523896] [2023-09-01 08:20:13,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:20:13,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:20:13,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:20:13,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:20:13,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 08:20:13,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 298 [2023-09-01 08:20:13,818 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 36 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 138.5) internal successors, (554), 4 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:13,818 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:20:13,818 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 298 [2023-09-01 08:20:13,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:20:14,641 INFO L130 PetriNetUnfolder]: 11685/17234 cut-off events. [2023-09-01 08:20:14,641 INFO L131 PetriNetUnfolder]: For 14552/15748 co-relation queries the response was YES. [2023-09-01 08:20:14,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43820 conditions, 17234 events. 11685/17234 cut-off events. For 14552/15748 co-relation queries the response was YES. Maximal size of possible extension queue 758. Compared 112243 event pairs, 3220 based on Foata normal form. 1196/16902 useless extension candidates. Maximal degree in co-relation 43804. Up to 11120 conditions per place. [2023-09-01 08:20:14,687 INFO L137 encePairwiseOnDemand]: 295/298 looper letters, 43 selfloop transitions, 2 changer transitions 6/53 dead transitions. [2023-09-01 08:20:14,687 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 53 transitions, 316 flow [2023-09-01 08:20:14,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:20:14,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:20:14,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 576 transitions. [2023-09-01 08:20:14,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48322147651006714 [2023-09-01 08:20:14,689 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 576 transitions. [2023-09-01 08:20:14,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 576 transitions. [2023-09-01 08:20:14,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:20:14,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 576 transitions. [2023-09-01 08:20:14,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:14,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 298.0) internal successors, (1490), 5 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:14,692 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 298.0) internal successors, (1490), 5 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:14,692 INFO L175 Difference]: Start difference. First operand has 51 places, 36 transitions, 140 flow. Second operand 4 states and 576 transitions. [2023-09-01 08:20:14,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 53 transitions, 316 flow [2023-09-01 08:20:14,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 53 transitions, 315 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:20:14,707 INFO L231 Difference]: Finished difference. Result has 52 places, 32 transitions, 134 flow [2023-09-01 08:20:14,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=52, PETRI_TRANSITIONS=32} [2023-09-01 08:20:14,709 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 16 predicate places. [2023-09-01 08:20:14,709 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 32 transitions, 134 flow [2023-09-01 08:20:14,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 138.5) internal successors, (554), 4 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:14,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:20:14,710 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:20:14,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 08:20:14,710 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-09-01 08:20:14,710 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:20:14,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1532814280, now seen corresponding path program 2 times [2023-09-01 08:20:14,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:20:14,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297700823] [2023-09-01 08:20:14,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:14,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:20:14,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:14,783 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:20:14,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:20:14,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297700823] [2023-09-01 08:20:14,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297700823] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:20:14,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999327427] [2023-09-01 08:20:14,784 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:20:14,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:20:14,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:20:14,785 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:20:14,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-09-01 08:20:14,852 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:20:14,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:20:14,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:20:14,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:20:14,871 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-09-01 08:20:14,872 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:20:14,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999327427] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:20:14,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:20:14,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2023-09-01 08:20:14,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595556813] [2023-09-01 08:20:14,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:20:14,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:20:14,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:20:14,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:20:14,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 08:20:14,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 298 [2023-09-01 08:20:14,881 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 32 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:14,881 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:20:14,881 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 298 [2023-09-01 08:20:14,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:20:15,285 INFO L130 PetriNetUnfolder]: 5429/7738 cut-off events. [2023-09-01 08:20:15,286 INFO L131 PetriNetUnfolder]: For 10716/11648 co-relation queries the response was YES. [2023-09-01 08:20:15,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21437 conditions, 7738 events. 5429/7738 cut-off events. For 10716/11648 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 43141 event pairs, 3684 based on Foata normal form. 1372/7930 useless extension candidates. Maximal degree in co-relation 21420. Up to 7654 conditions per place. [2023-09-01 08:20:15,305 INFO L137 encePairwiseOnDemand]: 296/298 looper letters, 0 selfloop transitions, 0 changer transitions 31/31 dead transitions. [2023-09-01 08:20:15,305 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 31 transitions, 180 flow [2023-09-01 08:20:15,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:20:15,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:20:15,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 431 transitions. [2023-09-01 08:20:15,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48210290827740493 [2023-09-01 08:20:15,307 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 431 transitions. [2023-09-01 08:20:15,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 431 transitions. [2023-09-01 08:20:15,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:20:15,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 431 transitions. [2023-09-01 08:20:15,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:15,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:15,309 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:15,310 INFO L175 Difference]: Start difference. First operand has 52 places, 32 transitions, 134 flow. Second operand 3 states and 431 transitions. [2023-09-01 08:20:15,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 31 transitions, 180 flow [2023-09-01 08:20:15,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 31 transitions, 159 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-09-01 08:20:15,332 INFO L231 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2023-09-01 08:20:15,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2023-09-01 08:20:15,332 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 8 predicate places. [2023-09-01 08:20:15,332 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2023-09-01 08:20:15,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:15,334 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 17 remaining) [2023-09-01 08:20:15,335 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-09-01 08:20:15,335 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2023-09-01 08:20:15,335 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-09-01 08:20:15,335 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-09-01 08:20:15,335 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-09-01 08:20:15,336 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-09-01 08:20:15,336 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-09-01 08:20:15,336 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 17 remaining) [2023-09-01 08:20:15,336 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 17 remaining) [2023-09-01 08:20:15,336 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 17 remaining) [2023-09-01 08:20:15,336 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-09-01 08:20:15,336 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-09-01 08:20:15,336 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-09-01 08:20:15,336 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-09-01 08:20:15,336 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-09-01 08:20:15,336 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-09-01 08:20:15,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-09-01 08:20:15,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-09-01 08:20:15,537 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:20:15,541 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 08:20:15,541 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 08:20:15,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 08:20:15 BasicIcfg [2023-09-01 08:20:15,543 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 08:20:15,544 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 08:20:15,544 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 08:20:15,544 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 08:20:15,544 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:19:51" (3/4) ... [2023-09-01 08:20:15,546 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 08:20:15,549 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-09-01 08:20:15,549 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-09-01 08:20:15,549 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-09-01 08:20:15,556 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2023-09-01 08:20:15,556 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 08:20:15,556 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 08:20:15,557 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 08:20:15,582 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 08:20:15,583 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 08:20:15,584 INFO L158 Benchmark]: Toolchain (without parser) took 25197.11ms. Allocated memory was 90.2MB in the beginning and 4.9GB in the end (delta: 4.8GB). Free memory was 71.2MB in the beginning and 3.6GB in the end (delta: -3.6GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2023-09-01 08:20:15,584 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 65.0MB. Free memory is still 43.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 08:20:15,584 INFO L158 Benchmark]: CACSL2BoogieTranslator took 223.09ms. Allocated memory is still 90.2MB. Free memory was 70.9MB in the beginning and 59.6MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-09-01 08:20:15,584 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.37ms. Allocated memory is still 90.2MB. Free memory was 59.6MB in the beginning and 57.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 08:20:15,585 INFO L158 Benchmark]: Boogie Preprocessor took 44.60ms. Allocated memory is still 90.2MB. Free memory was 57.6MB in the beginning and 56.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 08:20:15,585 INFO L158 Benchmark]: RCFGBuilder took 499.02ms. Allocated memory is still 90.2MB. Free memory was 56.2MB in the beginning and 57.5MB in the end (delta: -1.3MB). Peak memory consumption was 12.7MB. Max. memory is 16.1GB. [2023-09-01 08:20:15,589 INFO L158 Benchmark]: TraceAbstraction took 24342.06ms. Allocated memory was 90.2MB in the beginning and 4.9GB in the end (delta: 4.8GB). Free memory was 56.8MB in the beginning and 3.6GB in the end (delta: -3.6GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2023-09-01 08:20:15,589 INFO L158 Benchmark]: Witness Printer took 39.18ms. Allocated memory is still 4.9GB. Free memory was 3.6GB in the beginning and 3.6GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 08:20:15,590 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 65.0MB. Free memory is still 43.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 223.09ms. Allocated memory is still 90.2MB. Free memory was 70.9MB in the beginning and 59.6MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.37ms. Allocated memory is still 90.2MB. Free memory was 59.6MB in the beginning and 57.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.60ms. Allocated memory is still 90.2MB. Free memory was 57.6MB in the beginning and 56.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 499.02ms. Allocated memory is still 90.2MB. Free memory was 56.2MB in the beginning and 57.5MB in the end (delta: -1.3MB). Peak memory consumption was 12.7MB. Max. memory is 16.1GB. * TraceAbstraction took 24342.06ms. Allocated memory was 90.2MB in the beginning and 4.9GB in the end (delta: 4.8GB). Free memory was 56.8MB in the beginning and 3.6GB in the end (delta: -3.6GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. * Witness Printer took 39.18ms. Allocated memory is still 4.9GB. Free memory was 3.6GB in the beginning and 3.6GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.6s, 136 PlacesBefore, 36 PlacesAfterwards, 137 TransitionsBefore, 30 TransitionsAfterwards, 2184 CoEnabledTransitionPairs, 7 FixpointIterations, 70 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 12 TrivialYvCompositions, 6 ConcurrentYvCompositions, 7 ChoiceCompositions, 140 TotalNumberOfCompositions, 2568 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2358, independent: 2332, independent conditional: 0, independent unconditional: 2332, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1226, independent: 1213, independent conditional: 0, independent unconditional: 1213, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2358, independent: 1119, independent conditional: 0, independent unconditional: 1119, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 1226, unknown conditional: 0, unknown unconditional: 1226] , Statistics on independence cache: Total cache size (in pairs): 67, Positive cache size: 65, Positive conditional cache size: 0, Positive unconditional cache size: 65, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 110]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 110]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 189 locations, 17 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 24.2s, OverallIterations: 14, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 15.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 956 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 798 mSDsluCounter, 62 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 22 mSDsCounter, 34 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1317 IncrementalHoareTripleChecker+Invalid, 1351 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 34 mSolverCounterUnsat, 40 mSDtfsCounter, 1317 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 115 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=194occurred in iteration=10, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 164 NumberOfCodeBlocks, 150 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 157 ConstructedInterpolants, 0 QuantifiedInterpolants, 375 SizeOfPredicates, 5 NumberOfNonLiveVariables, 1210 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 26 InterpolantComputations, 11 PerfectInterpolantSequences, 57/95 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 08:20:15,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE