./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-queue-add-3-nl.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-queue-add-3-nl.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 c6847e0a77224cc67de11826c53270ee36a6eb5754e5add0bb0a49165dff2879 --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 08:20:22,566 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 08:20:22,568 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 08:20:22,589 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 08:20:22,589 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 08:20:22,591 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 08:20:22,594 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 08:20:22,596 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 08:20:22,597 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 08:20:22,601 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 08:20:22,602 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 08:20:22,603 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 08:20:22,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 08:20:22,605 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 08:20:22,607 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 08:20:22,613 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 08:20:22,613 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 08:20:22,614 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 08:20:22,616 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 08:20:22,620 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 08:20:22,625 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 08:20:22,626 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 08:20:22,627 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 08:20:22,628 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 08:20:22,632 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 08:20:22,632 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 08:20:22,633 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 08:20:22,634 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 08:20:22,634 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 08:20:22,635 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 08:20:22,635 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 08:20:22,636 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 08:20:22,637 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 08:20:22,638 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 08:20:22,638 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 08:20:22,639 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 08:20:22,639 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 08:20:22,639 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 08:20:22,639 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 08:20:22,640 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 08:20:22,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 08:20:22,642 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 08:20:22,673 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 08:20:22,673 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 08:20:22,674 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 08:20:22,674 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 08:20:22,674 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 08:20:22,675 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 08:20:22,675 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 08:20:22,675 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 08:20:22,675 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 08:20:22,676 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 08:20:22,676 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 08:20:22,676 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 08:20:22,677 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 08:20:22,677 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 08:20:22,677 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 08:20:22,677 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 08:20:22,677 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 08:20:22,677 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 08:20:22,677 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 08:20:22,678 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 08:20:22,678 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 08:20:22,678 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 08:20:22,678 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 08:20:22,678 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 08:20:22,678 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 08:20:22,678 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 08:20:22,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:20:22,679 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 08:20:22,679 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 08:20:22,679 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 08:20:22,679 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 08:20:22,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 08:20:22,680 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 08:20:22,680 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 08:20:22,680 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 08:20:22,680 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 08:20:22,680 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 08:20:22,680 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c6847e0a77224cc67de11826c53270ee36a6eb5754e5add0bb0a49165dff2879 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 08:20:22,922 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 08:20:22,935 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 08:20:22,937 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 08:20:22,938 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 08:20:22,938 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 08:20:22,939 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-queue-add-3-nl.wvr.c [2023-09-01 08:20:23,892 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 08:20:24,057 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 08:20:24,058 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-queue-add-3-nl.wvr.c [2023-09-01 08:20:24,062 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df5169486/9bf7e244f445421facc5055364ecf3f2/FLAG88cd57166 [2023-09-01 08:20:24,073 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df5169486/9bf7e244f445421facc5055364ecf3f2 [2023-09-01 08:20:24,075 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 08:20:24,076 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 08:20:24,077 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 08:20:24,077 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 08:20:24,079 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 08:20:24,080 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:20:24" (1/1) ... [2023-09-01 08:20:24,080 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5da1bf70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:24, skipping insertion in model container [2023-09-01 08:20:24,081 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:20:24" (1/1) ... [2023-09-01 08:20:24,085 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 08:20:24,097 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 08:20:24,220 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-queue-add-3-nl.wvr.c[3615,3628] [2023-09-01 08:20:24,226 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:20:24,233 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 08:20:24,252 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-queue-add-3-nl.wvr.c[3615,3628] [2023-09-01 08:20:24,255 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:20:24,261 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:20:24,261 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:20:24,265 INFO L208 MainTranslator]: Completed translation [2023-09-01 08:20:24,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:24 WrapperNode [2023-09-01 08:20:24,266 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 08:20:24,267 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 08:20:24,267 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 08:20:24,267 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 08:20:24,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:24" (1/1) ... [2023-09-01 08:20:24,277 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:24" (1/1) ... [2023-09-01 08:20:24,300 INFO L138 Inliner]: procedures = 26, calls = 55, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 285 [2023-09-01 08:20:24,300 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 08:20:24,300 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 08:20:24,301 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 08:20:24,301 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 08:20:24,306 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:24" (1/1) ... [2023-09-01 08:20:24,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:24" (1/1) ... [2023-09-01 08:20:24,314 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:24" (1/1) ... [2023-09-01 08:20:24,314 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:24" (1/1) ... [2023-09-01 08:20:24,319 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:24" (1/1) ... [2023-09-01 08:20:24,322 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:24" (1/1) ... [2023-09-01 08:20:24,325 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:24" (1/1) ... [2023-09-01 08:20:24,327 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:24" (1/1) ... [2023-09-01 08:20:24,329 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 08:20:24,334 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 08:20:24,334 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 08:20:24,334 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 08:20:24,335 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:24" (1/1) ... [2023-09-01 08:20:24,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:20:24,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:20:24,364 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 08:20:24,392 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 08:20:24,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 08:20:24,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 08:20:24,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 08:20:24,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 08:20:24,400 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 08:20:24,400 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 08:20:24,401 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 08:20:24,401 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 08:20:24,401 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 08:20:24,401 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 08:20:24,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 08:20:24,401 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 08:20:24,401 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 08:20:24,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 08:20:24,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 08:20:24,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 08:20:24,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 08:20:24,408 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 08:20:24,518 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 08:20:24,525 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 08:20:24,888 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 08:20:25,021 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 08:20:25,022 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-09-01 08:20:25,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:20:25 BoogieIcfgContainer [2023-09-01 08:20:25,025 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 08:20:25,026 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 08:20:25,026 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 08:20:25,028 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 08:20:25,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 08:20:24" (1/3) ... [2023-09-01 08:20:25,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2440e36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:20:25, skipping insertion in model container [2023-09-01 08:20:25,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:24" (2/3) ... [2023-09-01 08:20:25,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2440e36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:20:25, skipping insertion in model container [2023-09-01 08:20:25,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:20:25" (3/3) ... [2023-09-01 08:20:25,031 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-3-nl.wvr.c [2023-09-01 08:20:25,037 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 08:20:25,043 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 08:20:25,043 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2023-09-01 08:20:25,043 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 08:20:25,116 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 08:20:25,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 234 places, 242 transitions, 508 flow [2023-09-01 08:20:25,274 INFO L130 PetriNetUnfolder]: 18/239 cut-off events. [2023-09-01 08:20:25,275 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 08:20:25,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 239 events. 18/239 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 241 event pairs, 0 based on Foata normal form. 0/201 useless extension candidates. Maximal degree in co-relation 197. Up to 3 conditions per place. [2023-09-01 08:20:25,282 INFO L82 GeneralOperation]: Start removeDead. Operand has 234 places, 242 transitions, 508 flow [2023-09-01 08:20:25,292 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 214 places, 221 transitions, 457 flow [2023-09-01 08:20:25,296 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 08:20:25,313 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 214 places, 221 transitions, 457 flow [2023-09-01 08:20:25,316 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 214 places, 221 transitions, 457 flow [2023-09-01 08:20:25,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 214 places, 221 transitions, 457 flow [2023-09-01 08:20:25,378 INFO L130 PetriNetUnfolder]: 17/221 cut-off events. [2023-09-01 08:20:25,379 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 08:20:25,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 221 events. 17/221 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 240 event pairs, 0 based on Foata normal form. 0/184 useless extension candidates. Maximal degree in co-relation 197. Up to 3 conditions per place. [2023-09-01 08:20:25,384 INFO L119 LiptonReduction]: Number of co-enabled transitions 3852 [2023-09-01 08:20:33,528 INFO L134 LiptonReduction]: Checked pairs total: 7130 [2023-09-01 08:20:33,529 INFO L136 LiptonReduction]: Total number of compositions: 236 [2023-09-01 08:20:33,538 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 08:20:33,542 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;@5877a94b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 08:20:33,542 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2023-09-01 08:20:33,545 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-09-01 08:20:33,545 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 08:20:33,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:20:33,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 08:20:33,546 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:20:33,549 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:20:33,549 INFO L85 PathProgramCache]: Analyzing trace with hash 35337, now seen corresponding path program 1 times [2023-09-01 08:20:33,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:20:33,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494428853] [2023-09-01 08:20:33,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:33,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:20:33,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:33,755 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 08:20:33,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:20:33,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494428853] [2023-09-01 08:20:33,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494428853] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:20:33,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:20:33,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:20:33,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958671941] [2023-09-01 08:20:33,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:20:33,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:20:33,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:20:33,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:20:33,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:20:33,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 478 [2023-09-01 08:20:33,819 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 0 states have call successors, (0), 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 08:20:33,819 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:20:33,819 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 478 [2023-09-01 08:20:33,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:20:34,505 INFO L130 PetriNetUnfolder]: 5377/7199 cut-off events. [2023-09-01 08:20:34,506 INFO L131 PetriNetUnfolder]: For 368/368 co-relation queries the response was YES. [2023-09-01 08:20:34,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14765 conditions, 7199 events. 5377/7199 cut-off events. For 368/368 co-relation queries the response was YES. Maximal size of possible extension queue 650. Compared 36812 event pairs, 3536 based on Foata normal form. 0/2781 useless extension candidates. Maximal degree in co-relation 6685. Up to 3602 conditions per place. [2023-09-01 08:20:34,542 INFO L137 encePairwiseOnDemand]: 464/478 looper letters, 69 selfloop transitions, 4 changer transitions 0/74 dead transitions. [2023-09-01 08:20:34,542 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 74 transitions, 324 flow [2023-09-01 08:20:34,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:20:34,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:20:34,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 692 transitions. [2023-09-01 08:20:34,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4825662482566248 [2023-09-01 08:20:34,557 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 692 transitions. [2023-09-01 08:20:34,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 692 transitions. [2023-09-01 08:20:34,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:20:34,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 692 transitions. [2023-09-01 08:20:34,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 230.66666666666666) internal successors, (692), 3 states have internal predecessors, (692), 0 states have call successors, (0), 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 08:20:34,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 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 08:20:34,572 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 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 08:20:34,573 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 107 flow. Second operand 3 states and 692 transitions. [2023-09-01 08:20:34,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 74 transitions, 324 flow [2023-09-01 08:20:34,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 74 transitions, 306 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-09-01 08:20:34,582 INFO L231 Difference]: Finished difference. Result has 44 places, 43 transitions, 122 flow [2023-09-01 08:20:34,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=44, PETRI_TRANSITIONS=43} [2023-09-01 08:20:34,587 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -6 predicate places. [2023-09-01 08:20:34,589 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 43 transitions, 122 flow [2023-09-01 08:20:34,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 0 states have call successors, (0), 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 08:20:34,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:20:34,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 08:20:34,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 08:20:34,591 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:20:34,596 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:20:34,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1097459, now seen corresponding path program 1 times [2023-09-01 08:20:34,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:20:34,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429543763] [2023-09-01 08:20:34,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:34,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:20:34,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:34,664 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 08:20:34,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:20:34,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429543763] [2023-09-01 08:20:34,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429543763] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:20:34,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:20:34,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:20:34,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482115722] [2023-09-01 08:20:34,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:20:34,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:20:34,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:20:34,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:20:34,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:20:34,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 478 [2023-09-01 08:20:34,686 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 43 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 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 08:20:34,687 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:20:34,687 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 478 [2023-09-01 08:20:34,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:20:35,266 INFO L130 PetriNetUnfolder]: 5377/7197 cut-off events. [2023-09-01 08:20:35,266 INFO L131 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2023-09-01 08:20:35,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14649 conditions, 7197 events. 5377/7197 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 650. Compared 36610 event pairs, 3536 based on Foata normal form. 0/2785 useless extension candidates. Maximal degree in co-relation 7313. Up to 7195 conditions per place. [2023-09-01 08:20:35,294 INFO L137 encePairwiseOnDemand]: 475/478 looper letters, 39 selfloop transitions, 1 changer transitions 0/41 dead transitions. [2023-09-01 08:20:35,295 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 41 transitions, 194 flow [2023-09-01 08:20:35,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:20:35,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:20:35,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 642 transitions. [2023-09-01 08:20:35,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4476987447698745 [2023-09-01 08:20:35,297 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 642 transitions. [2023-09-01 08:20:35,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 642 transitions. [2023-09-01 08:20:35,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:20:35,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 642 transitions. [2023-09-01 08:20:35,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 0 states have call successors, (0), 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 08:20:35,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 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 08:20:35,301 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 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 08:20:35,301 INFO L175 Difference]: Start difference. First operand has 44 places, 43 transitions, 122 flow. Second operand 3 states and 642 transitions. [2023-09-01 08:20:35,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 41 transitions, 194 flow [2023-09-01 08:20:35,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 41 transitions, 186 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:20:35,303 INFO L231 Difference]: Finished difference. Result has 42 places, 41 transitions, 108 flow [2023-09-01 08:20:35,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=42, PETRI_TRANSITIONS=41} [2023-09-01 08:20:35,304 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -8 predicate places. [2023-09-01 08:20:35,304 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 41 transitions, 108 flow [2023-09-01 08:20:35,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 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 08:20:35,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:20:35,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 08:20:35,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 08:20:35,305 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:20:35,305 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:20:35,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1097490, now seen corresponding path program 1 times [2023-09-01 08:20:35,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:20:35,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402455830] [2023-09-01 08:20:35,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:35,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:20:35,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:35,381 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 08:20:35,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:20:35,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402455830] [2023-09-01 08:20:35,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402455830] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:20:35,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207521802] [2023-09-01 08:20:35,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:35,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:20:35,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:20:35,394 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 08:20:35,407 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 08:20:35,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:35,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:20:35,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:20:35,509 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 08:20:35,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:20:35,547 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 08:20:35,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207521802] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:20:35,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:20:35,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-09-01 08:20:35,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829692477] [2023-09-01 08:20:35,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:20:35,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 08:20:35,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:20:35,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 08:20:35,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:20:35,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 478 [2023-09-01 08:20:35,604 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 41 transitions, 108 flow. Second operand has 7 states, 7 states have (on average 202.14285714285714) internal successors, (1415), 7 states have internal predecessors, (1415), 0 states have call successors, (0), 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 08:20:35,605 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:20:35,605 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 478 [2023-09-01 08:20:35,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:20:37,222 INFO L130 PetriNetUnfolder]: 13441/17988 cut-off events. [2023-09-01 08:20:37,223 INFO L131 PetriNetUnfolder]: For 200/200 co-relation queries the response was YES. [2023-09-01 08:20:37,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36594 conditions, 17988 events. 13441/17988 cut-off events. For 200/200 co-relation queries the response was YES. Maximal size of possible extension queue 1223. Compared 101501 event pairs, 8840 based on Foata normal form. 0/6956 useless extension candidates. Maximal degree in co-relation 36586. Up to 3600 conditions per place. [2023-09-01 08:20:37,301 INFO L137 encePairwiseOnDemand]: 472/478 looper letters, 160 selfloop transitions, 13 changer transitions 0/174 dead transitions. [2023-09-01 08:20:37,301 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 174 transitions, 762 flow [2023-09-01 08:20:37,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 08:20:37,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 08:20:37,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1385 transitions. [2023-09-01 08:20:37,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4829149232914923 [2023-09-01 08:20:37,304 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1385 transitions. [2023-09-01 08:20:37,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1385 transitions. [2023-09-01 08:20:37,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:20:37,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1385 transitions. [2023-09-01 08:20:37,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 230.83333333333334) internal successors, (1385), 6 states have internal predecessors, (1385), 0 states have call successors, (0), 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 08:20:37,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 478.0) internal successors, (3346), 7 states have internal predecessors, (3346), 0 states have call successors, (0), 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 08:20:37,312 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 478.0) internal successors, (3346), 7 states have internal predecessors, (3346), 0 states have call successors, (0), 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 08:20:37,312 INFO L175 Difference]: Start difference. First operand has 42 places, 41 transitions, 108 flow. Second operand 6 states and 1385 transitions. [2023-09-01 08:20:37,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 174 transitions, 762 flow [2023-09-01 08:20:37,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 174 transitions, 761 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:20:37,316 INFO L231 Difference]: Finished difference. Result has 49 places, 50 transitions, 200 flow [2023-09-01 08:20:37,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=200, PETRI_PLACES=49, PETRI_TRANSITIONS=50} [2023-09-01 08:20:37,318 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -1 predicate places. [2023-09-01 08:20:37,318 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 50 transitions, 200 flow [2023-09-01 08:20:37,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 202.14285714285714) internal successors, (1415), 7 states have internal predecessors, (1415), 0 states have call successors, (0), 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 08:20:37,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:20:37,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 08:20:37,328 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 08:20:37,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:20:37,524 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:20:37,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:20:37,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1641809162, now seen corresponding path program 1 times [2023-09-01 08:20:37,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:20:37,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060357183] [2023-09-01 08:20:37,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:37,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:20:37,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:37,616 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 08:20:37,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:20:37,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060357183] [2023-09-01 08:20:37,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060357183] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:20:37,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:20:37,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:20:37,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120438199] [2023-09-01 08:20:37,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:20:37,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:20:37,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:20:37,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:20:37,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:20:37,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 478 [2023-09-01 08:20:37,626 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 50 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 207.0) internal successors, (621), 3 states have internal predecessors, (621), 0 states have call successors, (0), 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 08:20:37,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:20:37,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 478 [2023-09-01 08:20:37,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:20:39,364 INFO L130 PetriNetUnfolder]: 17121/24488 cut-off events. [2023-09-01 08:20:39,365 INFO L131 PetriNetUnfolder]: For 203/203 co-relation queries the response was YES. [2023-09-01 08:20:39,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49972 conditions, 24488 events. 17121/24488 cut-off events. For 203/203 co-relation queries the response was YES. Maximal size of possible extension queue 1238. Compared 152398 event pairs, 8845 based on Foata normal form. 0/11236 useless extension candidates. Maximal degree in co-relation 49960. Up to 15169 conditions per place. [2023-09-01 08:20:39,460 INFO L137 encePairwiseOnDemand]: 474/478 looper letters, 75 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2023-09-01 08:20:39,460 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 77 transitions, 413 flow [2023-09-01 08:20:39,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:20:39,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:20:39,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 682 transitions. [2023-09-01 08:20:39,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4755927475592748 [2023-09-01 08:20:39,462 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 682 transitions. [2023-09-01 08:20:39,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 682 transitions. [2023-09-01 08:20:39,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:20:39,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 682 transitions. [2023-09-01 08:20:39,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 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 08:20:39,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 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 08:20:39,466 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 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 08:20:39,466 INFO L175 Difference]: Start difference. First operand has 49 places, 50 transitions, 200 flow. Second operand 3 states and 682 transitions. [2023-09-01 08:20:39,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 77 transitions, 413 flow [2023-09-01 08:20:39,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 77 transitions, 394 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-09-01 08:20:39,469 INFO L231 Difference]: Finished difference. Result has 51 places, 51 transitions, 195 flow [2023-09-01 08:20:39,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=195, PETRI_PLACES=51, PETRI_TRANSITIONS=51} [2023-09-01 08:20:39,471 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 1 predicate places. [2023-09-01 08:20:39,471 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 51 transitions, 195 flow [2023-09-01 08:20:39,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 207.0) internal successors, (621), 3 states have internal predecessors, (621), 0 states have call successors, (0), 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 08:20:39,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:20:39,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 08:20:39,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 08:20:39,472 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:20:39,473 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:20:39,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1641809190, now seen corresponding path program 1 times [2023-09-01 08:20:39,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:20:39,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463934167] [2023-09-01 08:20:39,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:39,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:20:39,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:39,571 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 08:20:39,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:20:39,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463934167] [2023-09-01 08:20:39,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463934167] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:20:39,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:20:39,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:20:39,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345843929] [2023-09-01 08:20:39,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:20:39,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:20:39,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:20:39,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:20:39,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 08:20:39,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 478 [2023-09-01 08:20:39,605 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 51 transitions, 195 flow. Second operand has 4 states, 4 states have (on average 198.25) internal successors, (793), 4 states have internal predecessors, (793), 0 states have call successors, (0), 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 08:20:39,605 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:20:39,605 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 478 [2023-09-01 08:20:39,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:20:41,482 INFO L130 PetriNetUnfolder]: 15886/22854 cut-off events. [2023-09-01 08:20:41,482 INFO L131 PetriNetUnfolder]: For 1694/2404 co-relation queries the response was YES. [2023-09-01 08:20:41,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49504 conditions, 22854 events. 15886/22854 cut-off events. For 1694/2404 co-relation queries the response was YES. Maximal size of possible extension queue 1398. Compared 145976 event pairs, 13490 based on Foata normal form. 1080/12413 useless extension candidates. Maximal degree in co-relation 49491. Up to 22547 conditions per place. [2023-09-01 08:20:41,622 INFO L137 encePairwiseOnDemand]: 469/478 looper letters, 66 selfloop transitions, 3 changer transitions 1/71 dead transitions. [2023-09-01 08:20:41,623 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 71 transitions, 406 flow [2023-09-01 08:20:41,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:20:41,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:20:41,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 849 transitions. [2023-09-01 08:20:41,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4440376569037657 [2023-09-01 08:20:41,626 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 849 transitions. [2023-09-01 08:20:41,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 849 transitions. [2023-09-01 08:20:41,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:20:41,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 849 transitions. [2023-09-01 08:20:41,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 212.25) internal successors, (849), 4 states have internal predecessors, (849), 0 states have call successors, (0), 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 08:20:41,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 478.0) internal successors, (2390), 5 states have internal predecessors, (2390), 0 states have call successors, (0), 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 08:20:41,634 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 478.0) internal successors, (2390), 5 states have internal predecessors, (2390), 0 states have call successors, (0), 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 08:20:41,635 INFO L175 Difference]: Start difference. First operand has 51 places, 51 transitions, 195 flow. Second operand 4 states and 849 transitions. [2023-09-01 08:20:41,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 71 transitions, 406 flow [2023-09-01 08:20:41,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 71 transitions, 404 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:20:41,637 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 212 flow [2023-09-01 08:20:41,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=212, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2023-09-01 08:20:41,640 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 4 predicate places. [2023-09-01 08:20:41,640 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 212 flow [2023-09-01 08:20:41,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 198.25) internal successors, (793), 4 states have internal predecessors, (793), 0 states have call successors, (0), 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 08:20:41,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:20:41,641 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-09-01 08:20:41,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 08:20:41,641 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:20:41,641 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:20:41,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1663339352, now seen corresponding path program 2 times [2023-09-01 08:20:41,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:20:41,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139288742] [2023-09-01 08:20:41,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:41,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:20:41,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:41,720 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 08:20:41,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:20:41,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139288742] [2023-09-01 08:20:41,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139288742] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:20:41,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353666529] [2023-09-01 08:20:41,724 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:20:41,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:20:41,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:20:41,729 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 08:20:41,731 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 08:20:41,798 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:20:41,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:20:41,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 08:20:41,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:20:41,813 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 08:20:41,813 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:20:41,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353666529] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:20:41,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:20:41,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-09-01 08:20:41,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528797503] [2023-09-01 08:20:41,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:20:41,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:20:41,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:20:41,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:20:41,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 08:20:41,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 478 [2023-09-01 08:20:41,832 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 212 flow. Second operand has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 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 08:20:41,832 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:20:41,832 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 478 [2023-09-01 08:20:41,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:20:43,564 INFO L130 PetriNetUnfolder]: 15886/22853 cut-off events. [2023-09-01 08:20:43,565 INFO L131 PetriNetUnfolder]: For 4429/5139 co-relation queries the response was YES. [2023-09-01 08:20:43,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54562 conditions, 22853 events. 15886/22853 cut-off events. For 4429/5139 co-relation queries the response was YES. Maximal size of possible extension queue 1484. Compared 147055 event pairs, 13490 based on Foata normal form. 711/12043 useless extension candidates. Maximal degree in co-relation 54547. Up to 22838 conditions per place. [2023-09-01 08:20:43,662 INFO L137 encePairwiseOnDemand]: 475/478 looper letters, 43 selfloop transitions, 6 changer transitions 0/50 dead transitions. [2023-09-01 08:20:43,662 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 50 transitions, 300 flow [2023-09-01 08:20:43,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:20:43,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:20:43,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 646 transitions. [2023-09-01 08:20:43,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4504881450488145 [2023-09-01 08:20:43,664 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 646 transitions. [2023-09-01 08:20:43,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 646 transitions. [2023-09-01 08:20:43,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:20:43,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 646 transitions. [2023-09-01 08:20:43,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 0 states have call successors, (0), 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 08:20:43,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 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 08:20:43,668 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 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 08:20:43,668 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 212 flow. Second operand 3 states and 646 transitions. [2023-09-01 08:20:43,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 50 transitions, 300 flow [2023-09-01 08:20:43,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 50 transitions, 294 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-09-01 08:20:43,671 INFO L231 Difference]: Finished difference. Result has 54 places, 50 transitions, 208 flow [2023-09-01 08:20:43,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=208, PETRI_PLACES=54, PETRI_TRANSITIONS=50} [2023-09-01 08:20:43,673 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 4 predicate places. [2023-09-01 08:20:43,674 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 50 transitions, 208 flow [2023-09-01 08:20:43,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 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 08:20:43,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:20:43,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:20:43,682 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 08:20:43,882 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,SelfDestructingSolverStorable5 [2023-09-01 08:20:43,882 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:20:43,883 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:20:43,883 INFO L85 PathProgramCache]: Analyzing trace with hash -2381116, now seen corresponding path program 1 times [2023-09-01 08:20:43,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:20:43,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050764559] [2023-09-01 08:20:43,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:43,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:20:43,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:43,960 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 08:20:43,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:20:43,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050764559] [2023-09-01 08:20:43,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050764559] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:20:43,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847370411] [2023-09-01 08:20:43,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:43,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:20:43,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:20:43,962 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 08:20:43,964 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 08:20:44,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:44,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:20:44,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:20:44,045 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 08:20:44,046 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:20:44,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847370411] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:20:44,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:20:44,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-09-01 08:20:44,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380169847] [2023-09-01 08:20:44,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:20:44,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:20:44,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:20:44,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:20:44,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-09-01 08:20:44,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 478 [2023-09-01 08:20:44,051 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 50 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 207.0) internal successors, (621), 3 states have internal predecessors, (621), 0 states have call successors, (0), 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 08:20:44,051 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:20:44,051 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 478 [2023-09-01 08:20:44,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:20:44,892 INFO L130 PetriNetUnfolder]: 9146/13293 cut-off events. [2023-09-01 08:20:44,892 INFO L131 PetriNetUnfolder]: For 3792/4432 co-relation queries the response was YES. [2023-09-01 08:20:44,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31175 conditions, 13293 events. 9146/13293 cut-off events. For 3792/4432 co-relation queries the response was YES. Maximal size of possible extension queue 766. Compared 78508 event pairs, 7500 based on Foata normal form. 640/8373 useless extension candidates. Maximal degree in co-relation 31159. Up to 13283 conditions per place. [2023-09-01 08:20:44,974 INFO L137 encePairwiseOnDemand]: 474/478 looper letters, 45 selfloop transitions, 1 changer transitions 0/47 dead transitions. [2023-09-01 08:20:44,974 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 47 transitions, 288 flow [2023-09-01 08:20:44,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:20:44,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:20:44,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 651 transitions. [2023-09-01 08:20:44,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45397489539748953 [2023-09-01 08:20:44,976 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 651 transitions. [2023-09-01 08:20:44,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 651 transitions. [2023-09-01 08:20:44,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:20:44,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 651 transitions. [2023-09-01 08:20:44,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 0 states have call successors, (0), 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 08:20:44,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 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 08:20:44,980 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 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 08:20:44,980 INFO L175 Difference]: Start difference. First operand has 54 places, 50 transitions, 208 flow. Second operand 3 states and 651 transitions. [2023-09-01 08:20:44,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 47 transitions, 288 flow [2023-09-01 08:20:44,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 47 transitions, 276 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:20:44,982 INFO L231 Difference]: Finished difference. Result has 51 places, 47 transitions, 186 flow [2023-09-01 08:20:44,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=51, PETRI_TRANSITIONS=47} [2023-09-01 08:20:44,983 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 1 predicate places. [2023-09-01 08:20:44,983 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 186 flow [2023-09-01 08:20:44,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 207.0) internal successors, (621), 3 states have internal predecessors, (621), 0 states have call successors, (0), 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 08:20:44,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:20:44,984 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-09-01 08:20:44,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 08:20:45,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:20:45,189 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:20:45,189 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:20:45,189 INFO L85 PathProgramCache]: Analyzing trace with hash 629787670, now seen corresponding path program 1 times [2023-09-01 08:20:45,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:20:45,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683365639] [2023-09-01 08:20:45,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:45,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:20:45,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:45,268 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 08:20:45,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:20:45,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683365639] [2023-09-01 08:20:45,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683365639] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:20:45,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22682734] [2023-09-01 08:20:45,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:45,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:20:45,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:20:45,277 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 08:20:45,280 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 08:20:45,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:45,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 08:20:45,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:20:45,372 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 08:20:45,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:20:45,417 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 08:20:45,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22682734] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:20:45,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:20:45,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-09-01 08:20:45,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688624909] [2023-09-01 08:20:45,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:20:45,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 08:20:45,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:20:45,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 08:20:45,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-09-01 08:20:45,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 478 [2023-09-01 08:20:45,515 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 186 flow. Second operand has 13 states, 13 states have (on average 202.15384615384616) internal successors, (2628), 13 states have internal predecessors, (2628), 0 states have call successors, (0), 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 08:20:45,515 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:20:45,515 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 478 [2023-09-01 08:20:45,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:20:47,692 INFO L130 PetriNetUnfolder]: 20120/29241 cut-off events. [2023-09-01 08:20:47,692 INFO L131 PetriNetUnfolder]: For 8360/9768 co-relation queries the response was YES. [2023-09-01 08:20:47,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68538 conditions, 29241 events. 20120/29241 cut-off events. For 8360/9768 co-relation queries the response was YES. Maximal size of possible extension queue 972. Compared 183760 event pairs, 16500 based on Foata normal form. 1420/18422 useless extension candidates. Maximal degree in co-relation 68522. Up to 4489 conditions per place. [2023-09-01 08:20:47,864 INFO L137 encePairwiseOnDemand]: 473/478 looper letters, 323 selfloop transitions, 31 changer transitions 0/355 dead transitions. [2023-09-01 08:20:47,865 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 355 transitions, 1776 flow [2023-09-01 08:20:47,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 08:20:47,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 08:20:47,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2761 transitions. [2023-09-01 08:20:47,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4813458856345886 [2023-09-01 08:20:47,873 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2761 transitions. [2023-09-01 08:20:47,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2761 transitions. [2023-09-01 08:20:47,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:20:47,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2761 transitions. [2023-09-01 08:20:47,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 230.08333333333334) internal successors, (2761), 12 states have internal predecessors, (2761), 0 states have call successors, (0), 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 08:20:47,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 478.0) internal successors, (6214), 13 states have internal predecessors, (6214), 0 states have call successors, (0), 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 08:20:47,888 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 478.0) internal successors, (6214), 13 states have internal predecessors, (6214), 0 states have call successors, (0), 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 08:20:47,888 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 186 flow. Second operand 12 states and 2761 transitions. [2023-09-01 08:20:47,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 355 transitions, 1776 flow [2023-09-01 08:20:47,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 355 transitions, 1775 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:20:47,895 INFO L231 Difference]: Finished difference. Result has 67 places, 65 transitions, 395 flow [2023-09-01 08:20:47,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=395, PETRI_PLACES=67, PETRI_TRANSITIONS=65} [2023-09-01 08:20:47,897 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 17 predicate places. [2023-09-01 08:20:47,897 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 65 transitions, 395 flow [2023-09-01 08:20:47,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 202.15384615384616) internal successors, (2628), 13 states have internal predecessors, (2628), 0 states have call successors, (0), 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 08:20:47,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:20:47,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:20:47,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 08:20:48,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:20:48,103 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:20:48,104 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:20:48,104 INFO L85 PathProgramCache]: Analyzing trace with hash -73812637, now seen corresponding path program 1 times [2023-09-01 08:20:48,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:20:48,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923047578] [2023-09-01 08:20:48,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:48,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:20:48,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:48,147 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 08:20:48,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:20:48,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923047578] [2023-09-01 08:20:48,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923047578] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:20:48,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412163629] [2023-09-01 08:20:48,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:48,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:20:48,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:20:48,149 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 08:20:48,151 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 08:20:48,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:48,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:20:48,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:20:48,241 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 08:20:48,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:20:48,250 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 08:20:48,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412163629] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:20:48,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:20:48,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-09-01 08:20:48,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530023062] [2023-09-01 08:20:48,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:20:48,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 08:20:48,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:20:48,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 08:20:48,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:20:48,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 478 [2023-09-01 08:20:48,265 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 65 transitions, 395 flow. Second operand has 7 states, 7 states have (on average 206.85714285714286) internal successors, (1448), 7 states have internal predecessors, (1448), 0 states have call successors, (0), 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 08:20:48,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:20:48,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 478 [2023-09-01 08:20:48,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:20:53,138 INFO L130 PetriNetUnfolder]: 48456/68753 cut-off events. [2023-09-01 08:20:53,138 INFO L131 PetriNetUnfolder]: For 5277/5277 co-relation queries the response was YES. [2023-09-01 08:20:53,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161662 conditions, 68753 events. 48456/68753 cut-off events. For 5277/5277 co-relation queries the response was YES. Maximal size of possible extension queue 1922. Compared 462602 event pairs, 10164 based on Foata normal form. 0/40723 useless extension candidates. Maximal degree in co-relation 161639. Up to 18704 conditions per place. [2023-09-01 08:20:53,505 INFO L137 encePairwiseOnDemand]: 474/478 looper letters, 172 selfloop transitions, 9 changer transitions 0/181 dead transitions. [2023-09-01 08:20:53,505 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 181 transitions, 1042 flow [2023-09-01 08:20:53,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 08:20:53,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 08:20:53,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1589 transitions. [2023-09-01 08:20:53,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47489539748953974 [2023-09-01 08:20:53,508 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1589 transitions. [2023-09-01 08:20:53,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1589 transitions. [2023-09-01 08:20:53,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:20:53,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1589 transitions. [2023-09-01 08:20:53,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 227.0) internal successors, (1589), 7 states have internal predecessors, (1589), 0 states have call successors, (0), 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 08:20:53,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 478.0) internal successors, (3824), 8 states have internal predecessors, (3824), 0 states have call successors, (0), 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 08:20:53,516 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 478.0) internal successors, (3824), 8 states have internal predecessors, (3824), 0 states have call successors, (0), 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 08:20:53,516 INFO L175 Difference]: Start difference. First operand has 67 places, 65 transitions, 395 flow. Second operand 7 states and 1589 transitions. [2023-09-01 08:20:53,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 181 transitions, 1042 flow [2023-09-01 08:20:53,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 181 transitions, 952 flow, removed 26 selfloop flow, removed 5 redundant places. [2023-09-01 08:20:53,526 INFO L231 Difference]: Finished difference. Result has 71 places, 71 transitions, 364 flow [2023-09-01 08:20:53,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=364, PETRI_PLACES=71, PETRI_TRANSITIONS=71} [2023-09-01 08:20:53,527 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 21 predicate places. [2023-09-01 08:20:53,527 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 71 transitions, 364 flow [2023-09-01 08:20:53,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 206.85714285714286) internal successors, (1448), 7 states have internal predecessors, (1448), 0 states have call successors, (0), 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 08:20:53,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:20:53,528 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:20:53,534 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-09-01 08:20:53,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:20:53,729 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:20:53,729 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:20:53,729 INFO L85 PathProgramCache]: Analyzing trace with hash 2006776608, now seen corresponding path program 1 times [2023-09-01 08:20:53,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:20:53,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693105241] [2023-09-01 08:20:53,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:53,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:20:53,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:53,825 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:20:53,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:20:53,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693105241] [2023-09-01 08:20:53,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693105241] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:20:53,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518360951] [2023-09-01 08:20:53,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:53,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:20:53,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:20:53,827 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 08:20:53,829 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 08:20:53,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:53,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 08:20:53,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:20:53,958 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:20:53,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:20:54,003 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:20:54,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518360951] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:20:54,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:20:54,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 11 [2023-09-01 08:20:54,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430476122] [2023-09-01 08:20:54,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:20:54,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 08:20:54,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:20:54,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 08:20:54,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-09-01 08:20:54,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 478 [2023-09-01 08:20:54,134 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 71 transitions, 364 flow. Second operand has 12 states, 12 states have (on average 192.58333333333334) internal successors, (2311), 12 states have internal predecessors, (2311), 0 states have call successors, (0), 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 08:20:54,134 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:20:54,134 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 478 [2023-09-01 08:20:54,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:21:01,000 INFO L130 PetriNetUnfolder]: 52691/76124 cut-off events. [2023-09-01 08:21:01,000 INFO L131 PetriNetUnfolder]: For 103301/108603 co-relation queries the response was YES. [2023-09-01 08:21:01,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197002 conditions, 76124 events. 52691/76124 cut-off events. For 103301/108603 co-relation queries the response was YES. Maximal size of possible extension queue 2309. Compared 524762 event pairs, 36421 based on Foata normal form. 10450/58237 useless extension candidates. Maximal degree in co-relation 196977. Up to 63413 conditions per place. [2023-09-01 08:21:01,478 INFO L137 encePairwiseOnDemand]: 469/478 looper letters, 161 selfloop transitions, 11 changer transitions 3/176 dead transitions. [2023-09-01 08:21:01,479 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 176 transitions, 1084 flow [2023-09-01 08:21:01,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 08:21:01,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 08:21:01,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2037 transitions. [2023-09-01 08:21:01,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4261506276150628 [2023-09-01 08:21:01,483 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2037 transitions. [2023-09-01 08:21:01,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2037 transitions. [2023-09-01 08:21:01,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:21:01,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2037 transitions. [2023-09-01 08:21:01,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 203.7) internal successors, (2037), 10 states have internal predecessors, (2037), 0 states have call successors, (0), 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 08:21:01,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 478.0) internal successors, (5258), 11 states have internal predecessors, (5258), 0 states have call successors, (0), 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 08:21:01,497 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 478.0) internal successors, (5258), 11 states have internal predecessors, (5258), 0 states have call successors, (0), 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 08:21:01,497 INFO L175 Difference]: Start difference. First operand has 71 places, 71 transitions, 364 flow. Second operand 10 states and 2037 transitions. [2023-09-01 08:21:01,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 176 transitions, 1084 flow [2023-09-01 08:21:01,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 176 transitions, 1069 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-09-01 08:21:01,575 INFO L231 Difference]: Finished difference. Result has 84 places, 77 transitions, 456 flow [2023-09-01 08:21:01,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=456, PETRI_PLACES=84, PETRI_TRANSITIONS=77} [2023-09-01 08:21:01,576 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 34 predicate places. [2023-09-01 08:21:01,576 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 77 transitions, 456 flow [2023-09-01 08:21:01,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 192.58333333333334) internal successors, (2311), 12 states have internal predecessors, (2311), 0 states have call successors, (0), 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 08:21:01,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:21:01,577 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:21:01,584 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 08:21:01,782 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 08:21:01,782 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:21:01,782 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:21:01,783 INFO L85 PathProgramCache]: Analyzing trace with hash -836431156, now seen corresponding path program 2 times [2023-09-01 08:21:01,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:21:01,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074150728] [2023-09-01 08:21:01,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:21:01,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:21:01,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:21:02,009 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 08:21:02,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:21:02,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074150728] [2023-09-01 08:21:02,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074150728] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:21:02,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380267586] [2023-09-01 08:21:02,010 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:21:02,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:21:02,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:21:02,011 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 08:21:02,031 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 08:21:02,095 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 08:21:02,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:21:02,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:21:02,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:21:02,105 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 08:21:02,105 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:21:02,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380267586] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:21:02,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:21:02,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-09-01 08:21:02,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69720232] [2023-09-01 08:21:02,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:21:02,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:21:02,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:21:02,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:21:02,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 08:21:02,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 478 [2023-09-01 08:21:02,113 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 77 transitions, 456 flow. Second operand has 4 states, 4 states have (on average 207.0) internal successors, (828), 4 states have internal predecessors, (828), 0 states have call successors, (0), 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 08:21:02,113 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:21:02,113 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 478 [2023-09-01 08:21:02,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:21:08,559 INFO L130 PetriNetUnfolder]: 53021/78005 cut-off events. [2023-09-01 08:21:08,559 INFO L131 PetriNetUnfolder]: For 40010/40010 co-relation queries the response was YES. [2023-09-01 08:21:08,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208080 conditions, 78005 events. 53021/78005 cut-off events. For 40010/40010 co-relation queries the response was YES. Maximal size of possible extension queue 2201. Compared 571404 event pairs, 3597 based on Foata normal form. 2200/52572 useless extension candidates. Maximal degree in co-relation 208048. Up to 49874 conditions per place. [2023-09-01 08:21:09,159 INFO L137 encePairwiseOnDemand]: 475/478 looper letters, 112 selfloop transitions, 3 changer transitions 0/115 dead transitions. [2023-09-01 08:21:09,160 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 115 transitions, 775 flow [2023-09-01 08:21:09,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:21:09,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:21:09,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 896 transitions. [2023-09-01 08:21:09,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4686192468619247 [2023-09-01 08:21:09,162 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 896 transitions. [2023-09-01 08:21:09,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 896 transitions. [2023-09-01 08:21:09,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:21:09,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 896 transitions. [2023-09-01 08:21:09,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 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 08:21:09,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 478.0) internal successors, (2390), 5 states have internal predecessors, (2390), 0 states have call successors, (0), 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 08:21:09,166 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 478.0) internal successors, (2390), 5 states have internal predecessors, (2390), 0 states have call successors, (0), 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 08:21:09,166 INFO L175 Difference]: Start difference. First operand has 84 places, 77 transitions, 456 flow. Second operand 4 states and 896 transitions. [2023-09-01 08:21:09,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 115 transitions, 775 flow [2023-09-01 08:21:10,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 115 transitions, 762 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-09-01 08:21:10,374 INFO L231 Difference]: Finished difference. Result has 84 places, 73 transitions, 428 flow [2023-09-01 08:21:10,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=428, PETRI_PLACES=84, PETRI_TRANSITIONS=73} [2023-09-01 08:21:10,375 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 34 predicate places. [2023-09-01 08:21:10,375 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 73 transitions, 428 flow [2023-09-01 08:21:10,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 207.0) internal successors, (828), 4 states have internal predecessors, (828), 0 states have call successors, (0), 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 08:21:10,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:21:10,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:21:10,381 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 08:21:10,580 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 08:21:10,581 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:21:10,581 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:21:10,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1981082682, now seen corresponding path program 1 times [2023-09-01 08:21:10,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:21:10,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891564024] [2023-09-01 08:21:10,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:21:10,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:21:10,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:21:10,655 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 08:21:10,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:21:10,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891564024] [2023-09-01 08:21:10,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891564024] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:21:10,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:21:10,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 08:21:10,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006908589] [2023-09-01 08:21:10,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:21:10,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:21:10,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:21:10,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:21:10,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 08:21:10,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 478 [2023-09-01 08:21:10,684 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 73 transitions, 428 flow. Second operand has 4 states, 4 states have (on average 199.5) internal successors, (798), 4 states have internal predecessors, (798), 0 states have call successors, (0), 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 08:21:10,684 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:21:10,684 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 478 [2023-09-01 08:21:10,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:21:16,223 INFO L130 PetriNetUnfolder]: 43011/63690 cut-off events. [2023-09-01 08:21:16,223 INFO L131 PetriNetUnfolder]: For 98518/103440 co-relation queries the response was YES. [2023-09-01 08:21:16,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172635 conditions, 63690 events. 43011/63690 cut-off events. For 98518/103440 co-relation queries the response was YES. Maximal size of possible extension queue 2073. Compared 456844 event pairs, 36319 based on Foata normal form. 5154/46203 useless extension candidates. Maximal degree in co-relation 172603. Up to 62769 conditions per place. [2023-09-01 08:21:16,710 INFO L137 encePairwiseOnDemand]: 465/478 looper letters, 74 selfloop transitions, 14 changer transitions 6/95 dead transitions. [2023-09-01 08:21:16,710 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 95 transitions, 730 flow [2023-09-01 08:21:16,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:21:16,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:21:16,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 846 transitions. [2023-09-01 08:21:16,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4424686192468619 [2023-09-01 08:21:16,712 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 846 transitions. [2023-09-01 08:21:16,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 846 transitions. [2023-09-01 08:21:16,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:21:16,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 846 transitions. [2023-09-01 08:21:16,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 211.5) internal successors, (846), 4 states have internal predecessors, (846), 0 states have call successors, (0), 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 08:21:16,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 478.0) internal successors, (2390), 5 states have internal predecessors, (2390), 0 states have call successors, (0), 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 08:21:16,716 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 478.0) internal successors, (2390), 5 states have internal predecessors, (2390), 0 states have call successors, (0), 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 08:21:16,716 INFO L175 Difference]: Start difference. First operand has 84 places, 73 transitions, 428 flow. Second operand 4 states and 846 transitions. [2023-09-01 08:21:16,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 95 transitions, 730 flow [2023-09-01 08:21:16,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 95 transitions, 724 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:21:16,752 INFO L231 Difference]: Finished difference. Result has 87 places, 74 transitions, 491 flow [2023-09-01 08:21:16,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=491, PETRI_PLACES=87, PETRI_TRANSITIONS=74} [2023-09-01 08:21:16,753 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 37 predicate places. [2023-09-01 08:21:16,753 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 74 transitions, 491 flow [2023-09-01 08:21:16,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 199.5) internal successors, (798), 4 states have internal predecessors, (798), 0 states have call successors, (0), 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 08:21:16,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:21:16,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:21:16,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 08:21:16,754 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:21:16,754 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:21:16,754 INFO L85 PathProgramCache]: Analyzing trace with hash -593899677, now seen corresponding path program 1 times [2023-09-01 08:21:16,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:21:16,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24852184] [2023-09-01 08:21:16,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:21:16,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:21:16,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:21:16,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:21:16,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:21:16,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24852184] [2023-09-01 08:21:16,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24852184] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:21:16,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:21:16,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:21:16,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986186947] [2023-09-01 08:21:16,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:21:16,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:21:16,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:21:16,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:21:16,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:21:16,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 478 [2023-09-01 08:21:16,872 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 74 transitions, 491 flow. Second operand has 3 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 0 states have call successors, (0), 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 08:21:16,872 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:21:16,872 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 478 [2023-09-01 08:21:16,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:21:21,882 INFO L130 PetriNetUnfolder]: 39107/58234 cut-off events. [2023-09-01 08:21:21,882 INFO L131 PetriNetUnfolder]: For 61573/63391 co-relation queries the response was YES. [2023-09-01 08:21:22,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180103 conditions, 58234 events. 39107/58234 cut-off events. For 61573/63391 co-relation queries the response was YES. Maximal size of possible extension queue 1862. Compared 412522 event pairs, 9983 based on Foata normal form. 2110/39704 useless extension candidates. Maximal degree in co-relation 180069. Up to 56337 conditions per place. [2023-09-01 08:21:22,365 INFO L137 encePairwiseOnDemand]: 474/478 looper letters, 80 selfloop transitions, 5 changer transitions 0/86 dead transitions. [2023-09-01 08:21:22,365 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 86 transitions, 700 flow [2023-09-01 08:21:22,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:21:22,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:21:22,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 650 transitions. [2023-09-01 08:21:22,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45327754532775455 [2023-09-01 08:21:22,367 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 650 transitions. [2023-09-01 08:21:22,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 650 transitions. [2023-09-01 08:21:22,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:21:22,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 650 transitions. [2023-09-01 08:21:22,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 216.66666666666666) internal successors, (650), 3 states have internal predecessors, (650), 0 states have call successors, (0), 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 08:21:22,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 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 08:21:22,370 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 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 08:21:22,370 INFO L175 Difference]: Start difference. First operand has 87 places, 74 transitions, 491 flow. Second operand 3 states and 650 transitions. [2023-09-01 08:21:22,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 86 transitions, 700 flow [2023-09-01 08:21:22,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 86 transitions, 669 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-09-01 08:21:22,532 INFO L231 Difference]: Finished difference. Result has 88 places, 74 transitions, 481 flow [2023-09-01 08:21:22,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=481, PETRI_PLACES=88, PETRI_TRANSITIONS=74} [2023-09-01 08:21:22,532 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 38 predicate places. [2023-09-01 08:21:22,532 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 74 transitions, 481 flow [2023-09-01 08:21:22,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 0 states have call successors, (0), 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 08:21:22,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:21:22,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:21:22,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 08:21:22,533 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:21:22,533 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:21:22,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1857744549, now seen corresponding path program 1 times [2023-09-01 08:21:22,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:21:22,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344300020] [2023-09-01 08:21:22,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:21:22,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:21:22,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:21:22,612 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 08:21:22,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:21:22,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344300020] [2023-09-01 08:21:22,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344300020] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:21:22,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:21:22,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:21:22,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325987145] [2023-09-01 08:21:22,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:21:22,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:21:22,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:21:22,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:21:22,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:21:22,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 478 [2023-09-01 08:21:22,621 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 74 transitions, 481 flow. Second operand has 3 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 0 states have call successors, (0), 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 08:21:22,621 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:21:22,621 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 478 [2023-09-01 08:21:22,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:21:28,165 INFO L130 PetriNetUnfolder]: 42127/62214 cut-off events. [2023-09-01 08:21:28,165 INFO L131 PetriNetUnfolder]: For 95079/95937 co-relation queries the response was YES. [2023-09-01 08:21:28,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202196 conditions, 62214 events. 42127/62214 cut-off events. For 95079/95937 co-relation queries the response was YES. Maximal size of possible extension queue 1914. Compared 431809 event pairs, 10035 based on Foata normal form. 2418/42072 useless extension candidates. Maximal degree in co-relation 202161. Up to 50281 conditions per place. [2023-09-01 08:21:28,642 INFO L137 encePairwiseOnDemand]: 468/478 looper letters, 86 selfloop transitions, 5 changer transitions 0/92 dead transitions. [2023-09-01 08:21:28,643 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 92 transitions, 751 flow [2023-09-01 08:21:28,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:21:28,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:21:28,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 655 transitions. [2023-09-01 08:21:28,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45676429567642957 [2023-09-01 08:21:28,644 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 655 transitions. [2023-09-01 08:21:28,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 655 transitions. [2023-09-01 08:21:28,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:21:28,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 655 transitions. [2023-09-01 08:21:28,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 218.33333333333334) internal successors, (655), 3 states have internal predecessors, (655), 0 states have call successors, (0), 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 08:21:28,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 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 08:21:28,647 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 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 08:21:28,647 INFO L175 Difference]: Start difference. First operand has 88 places, 74 transitions, 481 flow. Second operand 3 states and 655 transitions. [2023-09-01 08:21:28,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 92 transitions, 751 flow [2023-09-01 08:21:28,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 92 transitions, 726 flow, removed 10 selfloop flow, removed 1 redundant places. [2023-09-01 08:21:28,692 INFO L231 Difference]: Finished difference. Result has 90 places, 78 transitions, 513 flow [2023-09-01 08:21:28,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=513, PETRI_PLACES=90, PETRI_TRANSITIONS=78} [2023-09-01 08:21:28,692 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 40 predicate places. [2023-09-01 08:21:28,692 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 78 transitions, 513 flow [2023-09-01 08:21:28,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 0 states have call successors, (0), 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 08:21:28,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:21:28,693 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1] [2023-09-01 08:21:28,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-09-01 08:21:28,693 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:21:28,694 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:21:28,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1280765367, now seen corresponding path program 2 times [2023-09-01 08:21:28,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:21:28,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516974314] [2023-09-01 08:21:28,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:21:28,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:21:28,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:21:28,775 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 08:21:28,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:21:28,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516974314] [2023-09-01 08:21:28,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516974314] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:21:28,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686878604] [2023-09-01 08:21:28,776 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:21:28,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:21:28,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:21:28,777 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 08:21:28,780 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 08:21:28,993 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:21:28,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:21:28,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:21:28,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:21:29,009 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-09-01 08:21:29,009 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:21:29,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686878604] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:21:29,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:21:29,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2023-09-01 08:21:29,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890362752] [2023-09-01 08:21:29,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:21:29,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:21:29,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:21:29,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:21:29,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 08:21:29,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 478 [2023-09-01 08:21:29,017 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 78 transitions, 513 flow. Second operand has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 0 states have call successors, (0), 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 08:21:29,018 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:21:29,018 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 478 [2023-09-01 08:21:29,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:21:34,074 INFO L130 PetriNetUnfolder]: 39375/58342 cut-off events. [2023-09-01 08:21:34,075 INFO L131 PetriNetUnfolder]: For 56064/56922 co-relation queries the response was YES. [2023-09-01 08:21:34,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198195 conditions, 58342 events. 39375/58342 cut-off events. For 56064/56922 co-relation queries the response was YES. Maximal size of possible extension queue 1799. Compared 404113 event pairs, 27043 based on Foata normal form. 1978/42200 useless extension candidates. Maximal degree in co-relation 198158. Up to 58309 conditions per place. [2023-09-01 08:21:34,698 INFO L137 encePairwiseOnDemand]: 476/478 looper letters, 74 selfloop transitions, 1 changer transitions 1/77 dead transitions. [2023-09-01 08:21:34,698 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 77 transitions, 655 flow [2023-09-01 08:21:34,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:21:34,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:21:34,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 647 transitions. [2023-09-01 08:21:34,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4511854951185495 [2023-09-01 08:21:34,699 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 647 transitions. [2023-09-01 08:21:34,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 647 transitions. [2023-09-01 08:21:34,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:21:34,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 647 transitions. [2023-09-01 08:21:34,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 215.66666666666666) internal successors, (647), 3 states have internal predecessors, (647), 0 states have call successors, (0), 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 08:21:34,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 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 08:21:34,702 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 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 08:21:34,702 INFO L175 Difference]: Start difference. First operand has 90 places, 78 transitions, 513 flow. Second operand 3 states and 647 transitions. [2023-09-01 08:21:34,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 77 transitions, 655 flow [2023-09-01 08:21:34,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 77 transitions, 638 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-09-01 08:21:34,746 INFO L231 Difference]: Finished difference. Result has 86 places, 76 transitions, 482 flow [2023-09-01 08:21:34,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=482, PETRI_PLACES=86, PETRI_TRANSITIONS=76} [2023-09-01 08:21:34,747 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 36 predicate places. [2023-09-01 08:21:34,747 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 76 transitions, 482 flow [2023-09-01 08:21:34,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 0 states have call successors, (0), 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 08:21:34,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:21:34,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:21:34,755 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 08:21:34,947 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,SelfDestructingSolverStorable14 [2023-09-01 08:21:34,948 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:21:34,948 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:21:34,948 INFO L85 PathProgramCache]: Analyzing trace with hash -423660763, now seen corresponding path program 1 times [2023-09-01 08:21:34,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:21:34,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495886601] [2023-09-01 08:21:34,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:21:34,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:21:34,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:21:35,062 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 08:21:35,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:21:35,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495886601] [2023-09-01 08:21:35,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495886601] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:21:35,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501345926] [2023-09-01 08:21:35,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:21:35,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:21:35,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:21:35,065 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 08:21:35,067 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 08:21:35,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:21:35,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:21:35,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:21:35,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:21:35,167 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:21:35,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501345926] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:21:35,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:21:35,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-09-01 08:21:35,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883049170] [2023-09-01 08:21:35,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:21:35,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:21:35,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:21:35,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:21:35,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-09-01 08:21:35,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 478 [2023-09-01 08:21:35,171 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 76 transitions, 482 flow. Second operand has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 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 08:21:35,171 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:21:35,171 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 478 [2023-09-01 08:21:35,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:21:38,917 INFO L130 PetriNetUnfolder]: 28892/42539 cut-off events. [2023-09-01 08:21:38,917 INFO L131 PetriNetUnfolder]: For 26743/27103 co-relation queries the response was YES. [2023-09-01 08:21:39,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139923 conditions, 42539 events. 28892/42539 cut-off events. For 26743/27103 co-relation queries the response was YES. Maximal size of possible extension queue 1292. Compared 278617 event pairs, 18580 based on Foata normal form. 3180/31759 useless extension candidates. Maximal degree in co-relation 139889. Up to 42509 conditions per place. [2023-09-01 08:21:39,252 INFO L137 encePairwiseOnDemand]: 475/478 looper letters, 72 selfloop transitions, 1 changer transitions 0/74 dead transitions. [2023-09-01 08:21:39,252 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 74 transitions, 618 flow [2023-09-01 08:21:39,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:21:39,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:21:39,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 646 transitions. [2023-09-01 08:21:39,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4504881450488145 [2023-09-01 08:21:39,254 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 646 transitions. [2023-09-01 08:21:39,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 646 transitions. [2023-09-01 08:21:39,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:21:39,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 646 transitions. [2023-09-01 08:21:39,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 0 states have call successors, (0), 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 08:21:39,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 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 08:21:39,256 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 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 08:21:39,256 INFO L175 Difference]: Start difference. First operand has 86 places, 76 transitions, 482 flow. Second operand 3 states and 646 transitions. [2023-09-01 08:21:39,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 74 transitions, 618 flow [2023-09-01 08:21:39,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 74 transitions, 593 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-09-01 08:21:39,297 INFO L231 Difference]: Finished difference. Result has 83 places, 74 transitions, 449 flow [2023-09-01 08:21:39,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=449, PETRI_PLACES=83, PETRI_TRANSITIONS=74} [2023-09-01 08:21:39,297 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 33 predicate places. [2023-09-01 08:21:39,297 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 74 transitions, 449 flow [2023-09-01 08:21:39,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 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 08:21:39,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:21:39,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:21:39,305 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 08:21:39,498 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,SelfDestructingSolverStorable15 [2023-09-01 08:21:39,499 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:21:39,499 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:21:39,499 INFO L85 PathProgramCache]: Analyzing trace with hash -423660575, now seen corresponding path program 1 times [2023-09-01 08:21:39,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:21:39,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339901233] [2023-09-01 08:21:39,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:21:39,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:21:39,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:21:39,990 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 08:21:39,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:21:39,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339901233] [2023-09-01 08:21:39,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339901233] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:21:39,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425650041] [2023-09-01 08:21:39,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:21:39,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:21:39,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:21:39,992 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:21:40,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-09-01 08:21:40,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:21:40,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 30 conjunts are in the unsatisfiable core [2023-09-01 08:21:40,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:21:40,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-09-01 08:21:40,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:21:40,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-09-01 08:21:40,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:21:40,384 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-09-01 08:21:40,487 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 08:21:40,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:21:40,603 WARN L839 $PredicateComparison]: unable to prove that (forall ((~q2_back~0 Int) (v_ArrVal_584 (Array Int Int))) (or (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_584) c_~q2~0.base) (+ c_~q2~0.offset (* ~q2_back~0 4))) 2147483648) (< ~q2_back~0 0) (<= c_~n2~0 ~q2_back~0))) is different from false [2023-09-01 08:21:40,696 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:21:40,696 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-09-01 08:21:40,706 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:21:40,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 71 [2023-09-01 08:21:40,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 48 [2023-09-01 08:21:40,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2023-09-01 08:21:40,851 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 08:21:40,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425650041] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:21:40,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:21:40,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 19 [2023-09-01 08:21:40,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409569852] [2023-09-01 08:21:40,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:21:40,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-09-01 08:21:40,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:21:40,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-09-01 08:21:40,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=331, Unknown=1, NotChecked=36, Total=420 [2023-09-01 08:21:41,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 478 [2023-09-01 08:21:41,029 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 74 transitions, 449 flow. Second operand has 21 states, 21 states have (on average 141.71428571428572) internal successors, (2976), 21 states have internal predecessors, (2976), 0 states have call successors, (0), 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 08:21:41,029 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:21:41,029 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 478 [2023-09-01 08:21:41,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:21:52,190 INFO L130 PetriNetUnfolder]: 29192/43159 cut-off events. [2023-09-01 08:21:52,191 INFO L131 PetriNetUnfolder]: For 21575/21963 co-relation queries the response was YES. [2023-09-01 08:21:52,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122953 conditions, 43159 events. 29192/43159 cut-off events. For 21575/21963 co-relation queries the response was YES. Maximal size of possible extension queue 1263. Compared 284114 event pairs, 16192 based on Foata normal form. 388/29609 useless extension candidates. Maximal degree in co-relation 122919. Up to 41675 conditions per place. [2023-09-01 08:21:52,702 INFO L137 encePairwiseOnDemand]: 462/478 looper letters, 147 selfloop transitions, 86 changer transitions 0/234 dead transitions. [2023-09-01 08:21:52,702 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 234 transitions, 1608 flow [2023-09-01 08:21:52,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-09-01 08:21:52,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-09-01 08:21:52,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5076 transitions. [2023-09-01 08:21:52,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30340705319784816 [2023-09-01 08:21:52,710 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5076 transitions. [2023-09-01 08:21:52,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5076 transitions. [2023-09-01 08:21:52,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:21:52,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5076 transitions. [2023-09-01 08:21:52,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 145.02857142857144) internal successors, (5076), 35 states have internal predecessors, (5076), 0 states have call successors, (0), 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 08:21:52,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 478.0) internal successors, (17208), 36 states have internal predecessors, (17208), 0 states have call successors, (0), 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 08:21:52,731 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 478.0) internal successors, (17208), 36 states have internal predecessors, (17208), 0 states have call successors, (0), 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 08:21:52,731 INFO L175 Difference]: Start difference. First operand has 83 places, 74 transitions, 449 flow. Second operand 35 states and 5076 transitions. [2023-09-01 08:21:52,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 234 transitions, 1608 flow [2023-09-01 08:21:52,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 234 transitions, 1607 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:21:52,739 INFO L231 Difference]: Finished difference. Result has 133 places, 141 transitions, 1034 flow [2023-09-01 08:21:52,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1034, PETRI_PLACES=133, PETRI_TRANSITIONS=141} [2023-09-01 08:21:52,739 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 83 predicate places. [2023-09-01 08:21:52,739 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 141 transitions, 1034 flow [2023-09-01 08:21:52,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 141.71428571428572) internal successors, (2976), 21 states have internal predecessors, (2976), 0 states have call successors, (0), 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 08:21:52,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:21:52,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:21:52,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-09-01 08:21:52,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-09-01 08:21:52,945 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:21:52,945 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:21:52,946 INFO L85 PathProgramCache]: Analyzing trace with hash -567670413, now seen corresponding path program 1 times [2023-09-01 08:21:52,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:21:52,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620797511] [2023-09-01 08:21:52,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:21:52,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:21:52,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:21:53,517 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:21:53,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:21:53,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620797511] [2023-09-01 08:21:53,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620797511] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:21:53,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643553529] [2023-09-01 08:21:53,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:21:53,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:21:53,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:21:53,519 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:21:53,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-09-01 08:21:53,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:21:53,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 33 conjunts are in the unsatisfiable core [2023-09-01 08:21:53,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:21:53,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 08:21:53,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:21:53,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:21:53,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:21:53,764 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:21:53,820 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 08:21:53,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:21:53,911 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_636 (Array Int Int)) (~q2_back~0 Int)) (or (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_636) c_~q2~0.base) (+ c_~q2~0.offset (* ~q2_back~0 4))) 2147483649)) (< ~q2_back~0 0) (<= c_~n2~0 ~q2_back~0))) is different from false [2023-09-01 08:21:53,981 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:21:53,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2023-09-01 08:21:53,989 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:21:53,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 81 [2023-09-01 08:21:53,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 30 [2023-09-01 08:21:54,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 50 [2023-09-01 08:21:54,168 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 08:21:54,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643553529] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:21:54,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:21:54,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 21 [2023-09-01 08:21:54,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996239213] [2023-09-01 08:21:54,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:21:54,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-09-01 08:21:54,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:21:54,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-09-01 08:21:54,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=403, Unknown=1, NotChecked=40, Total=506 [2023-09-01 08:21:54,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 478 [2023-09-01 08:21:54,306 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 141 transitions, 1034 flow. Second operand has 23 states, 23 states have (on average 137.56521739130434) internal successors, (3164), 23 states have internal predecessors, (3164), 0 states have call successors, (0), 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 08:21:54,306 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:21:54,307 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 478 [2023-09-01 08:21:54,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:22:01,033 INFO L130 PetriNetUnfolder]: 30107/44849 cut-off events. [2023-09-01 08:22:01,033 INFO L131 PetriNetUnfolder]: For 139354/139744 co-relation queries the response was YES. [2023-09-01 08:22:01,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171354 conditions, 44849 events. 30107/44849 cut-off events. For 139354/139744 co-relation queries the response was YES. Maximal size of possible extension queue 1279. Compared 302216 event pairs, 17521 based on Foata normal form. 390/34717 useless extension candidates. Maximal degree in co-relation 171302. Up to 42809 conditions per place. [2023-09-01 08:22:01,610 INFO L137 encePairwiseOnDemand]: 462/478 looper letters, 155 selfloop transitions, 120 changer transitions 11/287 dead transitions. [2023-09-01 08:22:01,610 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 287 transitions, 2586 flow [2023-09-01 08:22:01,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-09-01 08:22:01,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-09-01 08:22:01,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 4790 transitions. [2023-09-01 08:22:01,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2947329559438838 [2023-09-01 08:22:01,615 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 4790 transitions. [2023-09-01 08:22:01,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 4790 transitions. [2023-09-01 08:22:01,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:22:01,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 4790 transitions. [2023-09-01 08:22:01,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 140.88235294117646) internal successors, (4790), 34 states have internal predecessors, (4790), 0 states have call successors, (0), 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 08:22:01,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 478.0) internal successors, (16730), 35 states have internal predecessors, (16730), 0 states have call successors, (0), 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 08:22:01,634 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 478.0) internal successors, (16730), 35 states have internal predecessors, (16730), 0 states have call successors, (0), 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 08:22:01,634 INFO L175 Difference]: Start difference. First operand has 133 places, 141 transitions, 1034 flow. Second operand 34 states and 4790 transitions. [2023-09-01 08:22:01,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 287 transitions, 2586 flow [2023-09-01 08:22:03,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 287 transitions, 2489 flow, removed 25 selfloop flow, removed 7 redundant places. [2023-09-01 08:22:03,628 INFO L231 Difference]: Finished difference. Result has 169 places, 192 transitions, 1747 flow [2023-09-01 08:22:03,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=951, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=1747, PETRI_PLACES=169, PETRI_TRANSITIONS=192} [2023-09-01 08:22:03,628 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 119 predicate places. [2023-09-01 08:22:03,628 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 192 transitions, 1747 flow [2023-09-01 08:22:03,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 137.56521739130434) internal successors, (3164), 23 states have internal predecessors, (3164), 0 states have call successors, (0), 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 08:22:03,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:22:03,630 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1] [2023-09-01 08:22:03,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-09-01 08:22:03,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-09-01 08:22:03,836 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:22:03,836 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:22:03,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1998585994, now seen corresponding path program 2 times [2023-09-01 08:22:03,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:22:03,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131394062] [2023-09-01 08:22:03,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:22:03,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:22:03,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:22:04,003 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:22:04,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:22:04,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131394062] [2023-09-01 08:22:04,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131394062] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:22:04,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279040207] [2023-09-01 08:22:04,004 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:22:04,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:22:04,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:22:04,009 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:22:04,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-09-01 08:22:04,115 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:22:04,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:22:04,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 08:22:04,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:22:04,147 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-09-01 08:22:04,148 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:22:04,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279040207] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:22:04,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:22:04,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 14 [2023-09-01 08:22:04,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457277218] [2023-09-01 08:22:04,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:22:04,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:22:04,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:22:04,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:22:04,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2023-09-01 08:22:04,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 478 [2023-09-01 08:22:04,180 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 192 transitions, 1747 flow. Second operand has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 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 08:22:04,180 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:22:04,180 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 478 [2023-09-01 08:22:04,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:22:09,116 INFO L130 PetriNetUnfolder]: 30037/44664 cut-off events. [2023-09-01 08:22:09,116 INFO L131 PetriNetUnfolder]: For 217079/217363 co-relation queries the response was YES. [2023-09-01 08:22:09,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186976 conditions, 44664 events. 30037/44664 cut-off events. For 217079/217363 co-relation queries the response was YES. Maximal size of possible extension queue 1347. Compared 300626 event pairs, 18734 based on Foata normal form. 287/39191 useless extension candidates. Maximal degree in co-relation 186916. Up to 44636 conditions per place. [2023-09-01 08:22:09,798 INFO L137 encePairwiseOnDemand]: 476/478 looper letters, 183 selfloop transitions, 1 changer transitions 4/189 dead transitions. [2023-09-01 08:22:09,799 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 189 transitions, 2042 flow [2023-09-01 08:22:09,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:22:09,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:22:09,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 632 transitions. [2023-09-01 08:22:09,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4407252440725244 [2023-09-01 08:22:09,800 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 632 transitions. [2023-09-01 08:22:09,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 632 transitions. [2023-09-01 08:22:09,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:22:09,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 632 transitions. [2023-09-01 08:22:09,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 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 08:22:09,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 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 08:22:09,802 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 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 08:22:09,802 INFO L175 Difference]: Start difference. First operand has 169 places, 192 transitions, 1747 flow. Second operand 3 states and 632 transitions. [2023-09-01 08:22:09,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 189 transitions, 2042 flow [2023-09-01 08:22:12,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 189 transitions, 1763 flow, removed 74 selfloop flow, removed 25 redundant places. [2023-09-01 08:22:12,882 INFO L231 Difference]: Finished difference. Result has 144 places, 185 transitions, 1370 flow [2023-09-01 08:22:12,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=1387, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1370, PETRI_PLACES=144, PETRI_TRANSITIONS=185} [2023-09-01 08:22:12,883 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 94 predicate places. [2023-09-01 08:22:12,883 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 185 transitions, 1370 flow [2023-09-01 08:22:12,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 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 08:22:12,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:22:12,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:22:12,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-09-01 08:22:13,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:22:13,084 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:22:13,085 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:22:13,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1354308895, now seen corresponding path program 1 times [2023-09-01 08:22:13,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:22:13,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381010164] [2023-09-01 08:22:13,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:22:13,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:22:13,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:22:13,523 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 08:22:13,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:22:13,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381010164] [2023-09-01 08:22:13,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381010164] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:22:13,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189151587] [2023-09-01 08:22:13,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:22:13,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:22:13,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:22:13,525 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:22:13,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-09-01 08:22:13,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:22:13,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 28 conjunts are in the unsatisfiable core [2023-09-01 08:22:13,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:22:13,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:22:13,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:22:13,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:22:13,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:22:13,890 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 08:22:13,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:22:13,947 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_766 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_766) c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset)) 2147483648)) is different from false [2023-09-01 08:22:14,252 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:22:14,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 72 [2023-09-01 08:22:14,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 48 [2023-09-01 08:22:14,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2023-09-01 08:22:14,416 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 08:22:14,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189151587] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:22:14,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:22:14,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 23 [2023-09-01 08:22:14,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696483643] [2023-09-01 08:22:14,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:22:14,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-09-01 08:22:14,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:22:14,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-09-01 08:22:14,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=466, Unknown=4, NotChecked=44, Total=600 [2023-09-01 08:22:14,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 478 [2023-09-01 08:22:14,556 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 185 transitions, 1370 flow. Second operand has 25 states, 25 states have (on average 148.56) internal successors, (3714), 25 states have internal predecessors, (3714), 0 states have call successors, (0), 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 08:22:14,556 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:22:14,556 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 478 [2023-09-01 08:22:14,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:22:30,156 INFO L130 PetriNetUnfolder]: 41723/62363 cut-off events. [2023-09-01 08:22:30,157 INFO L131 PetriNetUnfolder]: For 235921/236311 co-relation queries the response was YES. [2023-09-01 08:22:30,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 251368 conditions, 62363 events. 41723/62363 cut-off events. For 235921/236311 co-relation queries the response was YES. Maximal size of possible extension queue 1868. Compared 448213 event pairs, 3380 based on Foata normal form. 1637/58180 useless extension candidates. Maximal degree in co-relation 251321. Up to 25508 conditions per place. [2023-09-01 08:22:30,909 INFO L137 encePairwiseOnDemand]: 465/478 looper letters, 335 selfloop transitions, 145 changer transitions 1/482 dead transitions. [2023-09-01 08:22:30,909 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 482 transitions, 4099 flow [2023-09-01 08:22:30,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-09-01 08:22:30,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-09-01 08:22:30,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3603 transitions. [2023-09-01 08:22:30,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3277242132072039 [2023-09-01 08:22:30,913 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3603 transitions. [2023-09-01 08:22:30,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3603 transitions. [2023-09-01 08:22:30,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:22:30,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3603 transitions. [2023-09-01 08:22:30,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 156.65217391304347) internal successors, (3603), 23 states have internal predecessors, (3603), 0 states have call successors, (0), 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 08:22:30,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 478.0) internal successors, (11472), 24 states have internal predecessors, (11472), 0 states have call successors, (0), 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 08:22:30,922 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 478.0) internal successors, (11472), 24 states have internal predecessors, (11472), 0 states have call successors, (0), 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 08:22:30,922 INFO L175 Difference]: Start difference. First operand has 144 places, 185 transitions, 1370 flow. Second operand 23 states and 3603 transitions. [2023-09-01 08:22:30,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 482 transitions, 4099 flow [2023-09-01 08:22:37,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 482 transitions, 4066 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-09-01 08:22:37,464 INFO L231 Difference]: Finished difference. Result has 171 places, 264 transitions, 2656 flow [2023-09-01 08:22:37,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=1312, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2656, PETRI_PLACES=171, PETRI_TRANSITIONS=264} [2023-09-01 08:22:37,464 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 121 predicate places. [2023-09-01 08:22:37,464 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 264 transitions, 2656 flow [2023-09-01 08:22:37,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 148.56) internal successors, (3714), 25 states have internal predecessors, (3714), 0 states have call successors, (0), 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 08:22:37,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:22:37,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:22:37,472 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-09-01 08:22:37,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2023-09-01 08:22:37,670 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:22:37,670 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:22:37,670 INFO L85 PathProgramCache]: Analyzing trace with hash 2034065653, now seen corresponding path program 1 times [2023-09-01 08:22:37,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:22:37,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871557338] [2023-09-01 08:22:37,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:22:37,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:22:37,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:22:38,057 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 08:22:38,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:22:38,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871557338] [2023-09-01 08:22:38,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871557338] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:22:38,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492823824] [2023-09-01 08:22:38,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:22:38,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:22:38,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:22:38,061 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:22:38,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-09-01 08:22:38,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:22:38,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 26 conjunts are in the unsatisfiable core [2023-09-01 08:22:38,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:22:38,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:22:38,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:22:38,389 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 08:22:38,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:22:38,440 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_819 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_819) c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset))))) is different from false [2023-09-01 08:22:38,453 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:22:38,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 38 [2023-09-01 08:22:38,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-09-01 08:22:38,601 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 08:22:38,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492823824] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:22:38,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:22:38,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 22 [2023-09-01 08:22:38,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281291068] [2023-09-01 08:22:38,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:22:38,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-09-01 08:22:38,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:22:38,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-09-01 08:22:38,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=445, Unknown=1, NotChecked=42, Total=552 [2023-09-01 08:22:38,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 478 [2023-09-01 08:22:38,710 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 264 transitions, 2656 flow. Second operand has 24 states, 24 states have (on average 137.625) internal successors, (3303), 24 states have internal predecessors, (3303), 0 states have call successors, (0), 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 08:22:38,710 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:22:38,710 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 478 [2023-09-01 08:22:38,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:22:52,061 INFO L130 PetriNetUnfolder]: 48819/73483 cut-off events. [2023-09-01 08:22:52,062 INFO L131 PetriNetUnfolder]: For 554226/554617 co-relation queries the response was YES. [2023-09-01 08:22:52,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 358588 conditions, 73483 events. 48819/73483 cut-off events. For 554226/554617 co-relation queries the response was YES. Maximal size of possible extension queue 2314. Compared 547371 event pairs, 9689 based on Foata normal form. 1535/68842 useless extension candidates. Maximal degree in co-relation 358527. Up to 31253 conditions per place. [2023-09-01 08:22:53,268 INFO L137 encePairwiseOnDemand]: 459/478 looper letters, 563 selfloop transitions, 259 changer transitions 2/825 dead transitions. [2023-09-01 08:22:53,268 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 825 transitions, 8218 flow [2023-09-01 08:22:53,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-09-01 08:22:53,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2023-09-01 08:22:53,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 7841 transitions. [2023-09-01 08:22:53,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3037734387106772 [2023-09-01 08:22:53,299 INFO L72 ComplementDD]: Start complementDD. Operand 54 states and 7841 transitions. [2023-09-01 08:22:53,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 7841 transitions. [2023-09-01 08:22:53,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:22:53,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 54 states and 7841 transitions. [2023-09-01 08:22:53,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 55 states, 54 states have (on average 145.2037037037037) internal successors, (7841), 54 states have internal predecessors, (7841), 0 states have call successors, (0), 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 08:22:53,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 55 states, 55 states have (on average 478.0) internal successors, (26290), 55 states have internal predecessors, (26290), 0 states have call successors, (0), 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 08:22:53,322 INFO L81 ComplementDD]: Finished complementDD. Result has 55 states, 55 states have (on average 478.0) internal successors, (26290), 55 states have internal predecessors, (26290), 0 states have call successors, (0), 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 08:22:53,322 INFO L175 Difference]: Start difference. First operand has 171 places, 264 transitions, 2656 flow. Second operand 54 states and 7841 transitions. [2023-09-01 08:22:53,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 825 transitions, 8218 flow [2023-09-01 08:23:15,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 825 transitions, 7844 flow, removed 164 selfloop flow, removed 7 redundant places. [2023-09-01 08:23:15,488 INFO L231 Difference]: Finished difference. Result has 242 places, 422 transitions, 5135 flow [2023-09-01 08:23:15,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=2486, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=54, PETRI_FLOW=5135, PETRI_PLACES=242, PETRI_TRANSITIONS=422} [2023-09-01 08:23:15,489 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 192 predicate places. [2023-09-01 08:23:15,489 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 422 transitions, 5135 flow [2023-09-01 08:23:15,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 137.625) internal successors, (3303), 24 states have internal predecessors, (3303), 0 states have call successors, (0), 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 08:23:15,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:23:15,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:23:15,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-09-01 08:23:15,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:23:15,693 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:23:15,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:23:15,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1950080163, now seen corresponding path program 2 times [2023-09-01 08:23:15,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:23:15,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387850335] [2023-09-01 08:23:15,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:23:15,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:23:15,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:23:16,310 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:23:16,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:23:16,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387850335] [2023-09-01 08:23:16,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387850335] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:23:16,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888242583] [2023-09-01 08:23:16,310 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:23:16,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:23:16,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:23:16,313 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:23:16,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-09-01 08:23:16,438 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:23:16,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:23:16,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 14 conjunts are in the unsatisfiable core [2023-09-01 08:23:16,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:23:16,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:23:16,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-09-01 08:23:16,588 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:23:16,588 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:23:16,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888242583] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:23:16,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:23:16,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 16 [2023-09-01 08:23:16,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083931612] [2023-09-01 08:23:16,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:23:16,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 08:23:16,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:23:16,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 08:23:16,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2023-09-01 08:23:16,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 478 [2023-09-01 08:23:16,763 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 422 transitions, 5135 flow. Second operand has 8 states, 8 states have (on average 184.625) internal successors, (1477), 8 states have internal predecessors, (1477), 0 states have call successors, (0), 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 08:23:16,763 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:23:16,763 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 478 [2023-09-01 08:23:16,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:23:29,301 INFO L130 PetriNetUnfolder]: 52049/79607 cut-off events. [2023-09-01 08:23:29,301 INFO L131 PetriNetUnfolder]: For 719657/720128 co-relation queries the response was YES. [2023-09-01 08:23:30,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 463915 conditions, 79607 events. 52049/79607 cut-off events. For 719657/720128 co-relation queries the response was YES. Maximal size of possible extension queue 2585. Compared 613331 event pairs, 18174 based on Foata normal form. 577/72810 useless extension candidates. Maximal degree in co-relation 463832. Up to 69589 conditions per place. [2023-09-01 08:23:30,840 INFO L137 encePairwiseOnDemand]: 471/478 looper letters, 440 selfloop transitions, 88 changer transitions 0/529 dead transitions. [2023-09-01 08:23:30,841 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 529 transitions, 7498 flow [2023-09-01 08:23:30,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 08:23:30,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 08:23:30,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1162 transitions. [2023-09-01 08:23:30,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.405160390516039 [2023-09-01 08:23:30,842 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1162 transitions. [2023-09-01 08:23:30,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1162 transitions. [2023-09-01 08:23:30,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:23:30,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1162 transitions. [2023-09-01 08:23:30,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 193.66666666666666) internal successors, (1162), 6 states have internal predecessors, (1162), 0 states have call successors, (0), 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 08:23:30,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 478.0) internal successors, (3346), 7 states have internal predecessors, (3346), 0 states have call successors, (0), 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 08:23:30,845 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 478.0) internal successors, (3346), 7 states have internal predecessors, (3346), 0 states have call successors, (0), 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 08:23:30,845 INFO L175 Difference]: Start difference. First operand has 242 places, 422 transitions, 5135 flow. Second operand 6 states and 1162 transitions. [2023-09-01 08:23:30,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 529 transitions, 7498 flow [2023-09-01 08:24:01,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 529 transitions, 7007 flow, removed 223 selfloop flow, removed 7 redundant places. [2023-09-01 08:24:01,380 INFO L231 Difference]: Finished difference. Result has 242 places, 444 transitions, 5280 flow [2023-09-01 08:24:01,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=4701, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5280, PETRI_PLACES=242, PETRI_TRANSITIONS=444} [2023-09-01 08:24:01,380 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 192 predicate places. [2023-09-01 08:24:01,380 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 444 transitions, 5280 flow [2023-09-01 08:24:01,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 184.625) internal successors, (1477), 8 states have internal predecessors, (1477), 0 states have call successors, (0), 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 08:24:01,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:24:01,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:24:01,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-09-01 08:24:01,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:24:01,581 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:24:01,582 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:24:01,582 INFO L85 PathProgramCache]: Analyzing trace with hash -248487371, now seen corresponding path program 1 times [2023-09-01 08:24:01,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:24:01,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604910969] [2023-09-01 08:24:01,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:24:01,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:24:01,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:24:01,976 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 08:24:01,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:24:01,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604910969] [2023-09-01 08:24:01,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604910969] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:24:01,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546070247] [2023-09-01 08:24:01,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:24:01,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:24:01,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:24:01,977 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:24:01,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-09-01 08:24:02,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:24:02,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 32 conjunts are in the unsatisfiable core [2023-09-01 08:24:02,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:24:02,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:24:02,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:24:02,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:24:02,137 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2023-09-01 08:24:02,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 32 [2023-09-01 08:24:02,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-09-01 08:24:02,257 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 08:24:02,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-09-01 08:24:02,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-09-01 08:24:02,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:24:02,357 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-09-01 08:24:02,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:24:02,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-09-01 08:24:02,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:24:02,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-09-01 08:24:02,594 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-09-01 08:24:02,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2023-09-01 08:24:02,616 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:24:02,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:24:02,998 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:24:02,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 36 [2023-09-01 08:24:03,009 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:24:03,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2449 treesize of output 2385 [2023-09-01 08:24:03,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 288 treesize of output 240 [2023-09-01 08:24:03,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 111 [2023-09-01 08:24:03,068 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 99 [2023-09-01 08:24:03,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 98 [2023-09-01 08:24:03,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:24:03,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546070247] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:24:03,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:24:03,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 28 [2023-09-01 08:24:03,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118488864] [2023-09-01 08:24:03,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:24:03,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-09-01 08:24:03,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:24:03,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-09-01 08:24:03,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=763, Unknown=19, NotChecked=0, Total=870 [2023-09-01 08:24:05,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 478 [2023-09-01 08:24:05,341 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 444 transitions, 5280 flow. Second operand has 30 states, 30 states have (on average 134.3) internal successors, (4029), 30 states have internal predecessors, (4029), 0 states have call successors, (0), 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 08:24:05,342 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:24:05,342 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 478 [2023-09-01 08:24:05,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:24:07,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:24:09,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-09-01 08:24:16,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:24:25,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-09-01 08:24:27,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:24:34,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:24:36,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:24:38,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:24:40,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:24:42,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:24:45,731 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:24:59,738 INFO L130 PetriNetUnfolder]: 52937/81050 cut-off events. [2023-09-01 08:24:59,738 INFO L131 PetriNetUnfolder]: For 726205/726603 co-relation queries the response was YES. [2023-09-01 08:25:01,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 464499 conditions, 81050 events. 52937/81050 cut-off events. For 726205/726603 co-relation queries the response was YES. Maximal size of possible extension queue 2515. Compared 629382 event pairs, 18286 based on Foata normal form. 678/74442 useless extension candidates. Maximal degree in co-relation 464415. Up to 47012 conditions per place. [2023-09-01 08:25:01,440 INFO L137 encePairwiseOnDemand]: 463/478 looper letters, 505 selfloop transitions, 252 changer transitions 1/759 dead transitions. [2023-09-01 08:25:01,440 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 759 transitions, 9479 flow [2023-09-01 08:25:01,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-09-01 08:25:01,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2023-09-01 08:25:01,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 5754 transitions. [2023-09-01 08:25:01,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29360138789672413 [2023-09-01 08:25:01,451 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 5754 transitions. [2023-09-01 08:25:01,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 5754 transitions. [2023-09-01 08:25:01,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:25:01,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 5754 transitions. [2023-09-01 08:25:01,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 140.34146341463415) internal successors, (5754), 41 states have internal predecessors, (5754), 0 states have call successors, (0), 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 08:25:01,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 478.0) internal successors, (20076), 42 states have internal predecessors, (20076), 0 states have call successors, (0), 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 08:25:01,471 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 478.0) internal successors, (20076), 42 states have internal predecessors, (20076), 0 states have call successors, (0), 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 08:25:01,471 INFO L175 Difference]: Start difference. First operand has 242 places, 444 transitions, 5280 flow. Second operand 41 states and 5754 transitions. [2023-09-01 08:25:01,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 759 transitions, 9479 flow [2023-09-01 08:25:18,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 759 transitions, 9313 flow, removed 35 selfloop flow, removed 3 redundant places. [2023-09-01 08:25:18,272 INFO L231 Difference]: Finished difference. Result has 288 places, 495 transitions, 6512 flow [2023-09-01 08:25:18,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=5082, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=6512, PETRI_PLACES=288, PETRI_TRANSITIONS=495} [2023-09-01 08:25:18,273 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 238 predicate places. [2023-09-01 08:25:18,273 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 495 transitions, 6512 flow [2023-09-01 08:25:18,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 134.3) internal successors, (4029), 30 states have internal predecessors, (4029), 0 states have call successors, (0), 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 08:25:18,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:25:18,274 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:25:18,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-09-01 08:25:18,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-09-01 08:25:18,479 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:25:18,480 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:25:18,480 INFO L85 PathProgramCache]: Analyzing trace with hash 931473859, now seen corresponding path program 1 times [2023-09-01 08:25:18,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:25:18,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844359829] [2023-09-01 08:25:18,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:25:18,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:25:18,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:25:18,565 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:25:18,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:25:18,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844359829] [2023-09-01 08:25:18,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844359829] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:25:18,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960530986] [2023-09-01 08:25:18,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:25:18,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:25:18,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:25:18,567 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:25:18,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-09-01 08:25:18,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:25:18,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 08:25:18,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:25:18,727 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:25:18,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:25:18,797 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:25:18,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960530986] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:25:18,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:25:18,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-09-01 08:25:18,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649513653] [2023-09-01 08:25:18,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:25:18,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 08:25:18,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:25:18,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 08:25:18,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-09-01 08:25:18,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 478 [2023-09-01 08:25:18,942 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 495 transitions, 6512 flow. Second operand has 12 states, 12 states have (on average 193.16666666666666) internal successors, (2318), 12 states have internal predecessors, (2318), 0 states have call successors, (0), 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 08:25:18,942 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:25:18,942 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 478 [2023-09-01 08:25:18,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:25:33,032 INFO L130 PetriNetUnfolder]: 51435/78889 cut-off events. [2023-09-01 08:25:33,032 INFO L131 PetriNetUnfolder]: For 798633/799048 co-relation queries the response was YES. [2023-09-01 08:25:34,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 475885 conditions, 78889 events. 51435/78889 cut-off events. For 798633/799048 co-relation queries the response was YES. Maximal size of possible extension queue 2493. Compared 612677 event pairs, 27125 based on Foata normal form. 1160/73111 useless extension candidates. Maximal degree in co-relation 475791. Up to 71314 conditions per place. [2023-09-01 08:25:34,958 INFO L137 encePairwiseOnDemand]: 471/478 looper letters, 465 selfloop transitions, 56 changer transitions 1/523 dead transitions. [2023-09-01 08:25:34,959 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 523 transitions, 7723 flow [2023-09-01 08:25:34,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 08:25:34,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 08:25:34,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1211 transitions. [2023-09-01 08:25:34,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222454672245467 [2023-09-01 08:25:34,960 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1211 transitions. [2023-09-01 08:25:34,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1211 transitions. [2023-09-01 08:25:34,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:25:34,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1211 transitions. [2023-09-01 08:25:34,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 201.83333333333334) internal successors, (1211), 6 states have internal predecessors, (1211), 0 states have call successors, (0), 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 08:25:34,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 478.0) internal successors, (3346), 7 states have internal predecessors, (3346), 0 states have call successors, (0), 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 08:25:34,963 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 478.0) internal successors, (3346), 7 states have internal predecessors, (3346), 0 states have call successors, (0), 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 08:25:34,963 INFO L175 Difference]: Start difference. First operand has 288 places, 495 transitions, 6512 flow. Second operand 6 states and 1211 transitions. [2023-09-01 08:25:34,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 523 transitions, 7723 flow [2023-09-01 08:25:52,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 523 transitions, 7393 flow, removed 70 selfloop flow, removed 15 redundant places. [2023-09-01 08:25:52,072 INFO L231 Difference]: Finished difference. Result has 275 places, 475 transitions, 6072 flow [2023-09-01 08:25:52,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=5924, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6072, PETRI_PLACES=275, PETRI_TRANSITIONS=475} [2023-09-01 08:25:52,073 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 225 predicate places. [2023-09-01 08:25:52,073 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 475 transitions, 6072 flow [2023-09-01 08:25:52,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 193.16666666666666) internal successors, (2318), 12 states have internal predecessors, (2318), 0 states have call successors, (0), 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 08:25:52,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:25:52,074 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:25:52,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-09-01 08:25:52,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:25:52,279 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:25:52,280 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:25:52,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1865106158, now seen corresponding path program 2 times [2023-09-01 08:25:52,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:25:52,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795881916] [2023-09-01 08:25:52,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:25:52,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:25:52,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:25:52,655 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 08:25:52,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:25:52,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795881916] [2023-09-01 08:25:52,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795881916] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:25:52,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724677008] [2023-09-01 08:25:52,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:25:52,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:25:52,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:25:52,657 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:25:52,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-09-01 08:25:52,816 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:25:52,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:25:52,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 17 conjunts are in the unsatisfiable core [2023-09-01 08:25:52,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:25:52,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:25:52,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-09-01 08:25:52,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:25:52,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-09-01 08:25:52,979 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-09-01 08:25:52,979 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:25:52,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724677008] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:25:52,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:25:52,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 15 [2023-09-01 08:25:52,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790496628] [2023-09-01 08:25:52,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:25:52,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 08:25:52,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:25:52,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 08:25:52,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2023-09-01 08:25:53,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 478 [2023-09-01 08:25:53,155 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 475 transitions, 6072 flow. Second operand has 9 states, 9 states have (on average 182.44444444444446) internal successors, (1642), 9 states have internal predecessors, (1642), 0 states have call successors, (0), 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 08:25:53,155 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:25:53,155 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 478 [2023-09-01 08:25:53,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:26:08,314 INFO L130 PetriNetUnfolder]: 56989/88219 cut-off events. [2023-09-01 08:26:08,314 INFO L131 PetriNetUnfolder]: For 833628/834163 co-relation queries the response was YES. [2023-09-01 08:26:09,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 513395 conditions, 88219 events. 56989/88219 cut-off events. For 833628/834163 co-relation queries the response was YES. Maximal size of possible extension queue 2838. Compared 706395 event pairs, 10904 based on Foata normal form. 3771/83690 useless extension candidates. Maximal degree in co-relation 513307. Up to 51598 conditions per place. [2023-09-01 08:26:10,249 INFO L137 encePairwiseOnDemand]: 470/478 looper letters, 443 selfloop transitions, 157 changer transitions 0/601 dead transitions. [2023-09-01 08:26:10,249 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 601 transitions, 8695 flow [2023-09-01 08:26:10,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 08:26:10,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 08:26:10,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1342 transitions. [2023-09-01 08:26:10,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40107591153616257 [2023-09-01 08:26:10,251 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1342 transitions. [2023-09-01 08:26:10,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1342 transitions. [2023-09-01 08:26:10,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:26:10,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1342 transitions. [2023-09-01 08:26:10,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 191.71428571428572) internal successors, (1342), 7 states have internal predecessors, (1342), 0 states have call successors, (0), 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 08:26:10,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 478.0) internal successors, (3824), 8 states have internal predecessors, (3824), 0 states have call successors, (0), 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 08:26:10,255 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 478.0) internal successors, (3824), 8 states have internal predecessors, (3824), 0 states have call successors, (0), 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 08:26:10,255 INFO L175 Difference]: Start difference. First operand has 275 places, 475 transitions, 6072 flow. Second operand 7 states and 1342 transitions. [2023-09-01 08:26:10,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 601 transitions, 8695 flow [2023-09-01 08:26:32,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 601 transitions, 8458 flow, removed 7 selfloop flow, removed 9 redundant places. [2023-09-01 08:26:32,592 INFO L231 Difference]: Finished difference. Result has 275 places, 503 transitions, 6740 flow [2023-09-01 08:26:32,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=5777, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6740, PETRI_PLACES=275, PETRI_TRANSITIONS=503} [2023-09-01 08:26:32,592 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 225 predicate places. [2023-09-01 08:26:32,593 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 503 transitions, 6740 flow [2023-09-01 08:26:32,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 182.44444444444446) internal successors, (1642), 9 states have internal predecessors, (1642), 0 states have call successors, (0), 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 08:26:32,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:26:32,593 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:26:32,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-09-01 08:26:32,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:26:32,797 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:26:32,797 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:26:32,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1571061114, now seen corresponding path program 1 times [2023-09-01 08:26:32,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:26:32,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201241773] [2023-09-01 08:26:32,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:26:32,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:26:32,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:26:33,704 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 08:26:33,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:26:33,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201241773] [2023-09-01 08:26:33,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201241773] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:26:33,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911168743] [2023-09-01 08:26:33,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:26:33,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:26:33,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:26:33,717 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:26:33,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-09-01 08:26:33,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:26:33,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 15 conjunts are in the unsatisfiable core [2023-09-01 08:26:33,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:26:33,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:26:33,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-09-01 08:26:34,049 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 08:26:34,050 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:26:34,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911168743] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:26:34,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:26:34,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 15 [2023-09-01 08:26:34,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573714724] [2023-09-01 08:26:34,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:26:34,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 08:26:34,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:26:34,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 08:26:34,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2023-09-01 08:26:34,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 478 [2023-09-01 08:26:34,213 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 503 transitions, 6740 flow. Second operand has 8 states, 8 states have (on average 184.625) internal successors, (1477), 8 states have internal predecessors, (1477), 0 states have call successors, (0), 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 08:26:34,213 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:26:34,213 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 478 [2023-09-01 08:26:34,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:26:50,541 INFO L130 PetriNetUnfolder]: 57868/89838 cut-off events. [2023-09-01 08:26:50,541 INFO L131 PetriNetUnfolder]: For 879179/879698 co-relation queries the response was YES. [2023-09-01 08:26:52,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 539403 conditions, 89838 events. 57868/89838 cut-off events. For 879179/879698 co-relation queries the response was YES. Maximal size of possible extension queue 3016. Compared 724664 event pairs, 21860 based on Foata normal form. 535/81773 useless extension candidates. Maximal degree in co-relation 539316. Up to 82282 conditions per place. [2023-09-01 08:26:52,843 INFO L137 encePairwiseOnDemand]: 470/478 looper letters, 471 selfloop transitions, 118 changer transitions 0/590 dead transitions. [2023-09-01 08:26:52,843 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 590 transitions, 8907 flow [2023-09-01 08:26:52,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 08:26:52,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 08:26:52,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1351 transitions. [2023-09-01 08:26:52,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40376569037656906 [2023-09-01 08:26:52,845 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1351 transitions. [2023-09-01 08:26:52,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1351 transitions. [2023-09-01 08:26:52,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:26:52,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1351 transitions. [2023-09-01 08:26:52,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 193.0) internal successors, (1351), 7 states have internal predecessors, (1351), 0 states have call successors, (0), 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 08:26:52,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 478.0) internal successors, (3824), 8 states have internal predecessors, (3824), 0 states have call successors, (0), 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 08:26:52,849 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 478.0) internal successors, (3824), 8 states have internal predecessors, (3824), 0 states have call successors, (0), 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 08:26:52,849 INFO L175 Difference]: Start difference. First operand has 275 places, 503 transitions, 6740 flow. Second operand 7 states and 1351 transitions. [2023-09-01 08:26:52,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 590 transitions, 8907 flow [2023-09-01 08:27:20,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 590 transitions, 8814 flow, removed 14 selfloop flow, removed 2 redundant places. [2023-09-01 08:27:20,425 INFO L231 Difference]: Finished difference. Result has 281 places, 516 transitions, 7133 flow [2023-09-01 08:27:20,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=6647, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7133, PETRI_PLACES=281, PETRI_TRANSITIONS=516} [2023-09-01 08:27:20,425 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 231 predicate places. [2023-09-01 08:27:20,425 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 516 transitions, 7133 flow [2023-09-01 08:27:20,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 184.625) internal successors, (1477), 8 states have internal predecessors, (1477), 0 states have call successors, (0), 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 08:27:20,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:27:20,426 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:27:20,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-09-01 08:27:20,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:27:20,626 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:27:20,627 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:27:20,627 INFO L85 PathProgramCache]: Analyzing trace with hash 195994290, now seen corresponding path program 2 times [2023-09-01 08:27:20,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:27:20,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364086907] [2023-09-01 08:27:20,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:27:20,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:27:20,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:27:21,207 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 08:27:21,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:27:21,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364086907] [2023-09-01 08:27:21,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364086907] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:27:21,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306273427] [2023-09-01 08:27:21,208 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:27:21,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:27:21,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:27:21,211 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:27:21,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-09-01 08:27:21,339 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:27:21,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:27:21,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 20 conjunts are in the unsatisfiable core [2023-09-01 08:27:21,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:27:21,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:27:21,442 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-09-01 08:27:21,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:27:21,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-09-01 08:27:21,541 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 08:27:21,541 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:27:21,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306273427] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:27:21,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:27:21,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 16 [2023-09-01 08:27:21,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476758701] [2023-09-01 08:27:21,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:27:21,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 08:27:21,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:27:21,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 08:27:21,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2023-09-01 08:27:21,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 478 [2023-09-01 08:27:21,768 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 516 transitions, 7133 flow. Second operand has 9 states, 9 states have (on average 182.44444444444446) internal successors, (1642), 9 states have internal predecessors, (1642), 0 states have call successors, (0), 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 08:27:21,768 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:27:21,768 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 478 [2023-09-01 08:27:21,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:27:38,042 INFO L130 PetriNetUnfolder]: 58381/91035 cut-off events. [2023-09-01 08:27:38,042 INFO L131 PetriNetUnfolder]: For 875214/875733 co-relation queries the response was YES. [2023-09-01 08:27:39,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 541912 conditions, 91035 events. 58381/91035 cut-off events. For 875214/875733 co-relation queries the response was YES. Maximal size of possible extension queue 3051. Compared 740085 event pairs, 20741 based on Foata normal form. 545/82602 useless extension candidates. Maximal degree in co-relation 541822. Up to 78239 conditions per place. [2023-09-01 08:27:40,123 INFO L137 encePairwiseOnDemand]: 471/478 looper letters, 461 selfloop transitions, 136 changer transitions 0/598 dead transitions. [2023-09-01 08:27:40,125 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 598 transitions, 9268 flow [2023-09-01 08:27:40,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 08:27:40,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 08:27:40,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1338 transitions. [2023-09-01 08:27:40,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39988045427375973 [2023-09-01 08:27:40,127 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1338 transitions. [2023-09-01 08:27:40,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1338 transitions. [2023-09-01 08:27:40,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:27:40,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1338 transitions. [2023-09-01 08:27:40,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 191.14285714285714) internal successors, (1338), 7 states have internal predecessors, (1338), 0 states have call successors, (0), 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 08:27:40,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 478.0) internal successors, (3824), 8 states have internal predecessors, (3824), 0 states have call successors, (0), 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 08:27:40,130 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 478.0) internal successors, (3824), 8 states have internal predecessors, (3824), 0 states have call successors, (0), 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 08:27:40,130 INFO L175 Difference]: Start difference. First operand has 281 places, 516 transitions, 7133 flow. Second operand 7 states and 1338 transitions. [2023-09-01 08:27:40,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 598 transitions, 9268 flow