./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-mts.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --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-mts.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 9d38eb9d6ba70070fe3ced1aec90f1c3400cc1f89786e1bd625a19020cb0869f --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 15:40:36,562 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 15:40:36,565 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 15:40:36,609 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 15:40:36,610 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 15:40:36,613 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 15:40:36,614 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 15:40:36,617 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 15:40:36,619 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 15:40:36,624 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 15:40:36,625 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 15:40:36,627 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 15:40:36,628 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 15:40:36,630 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 15:40:36,631 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 15:40:36,636 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 15:40:36,637 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 15:40:36,639 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 15:40:36,641 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 15:40:36,647 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 15:40:36,649 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 15:40:36,650 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 15:40:36,651 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 15:40:36,652 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 15:40:36,658 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 15:40:36,658 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 15:40:36,658 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 15:40:36,660 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 15:40:36,661 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 15:40:36,661 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 15:40:36,662 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 15:40:36,663 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 15:40:36,665 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 15:40:36,666 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 15:40:36,667 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 15:40:36,667 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 15:40:36,667 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 15:40:36,668 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 15:40:36,668 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 15:40:36,668 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 15:40:36,669 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 15:40:36,671 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 15:40:36,704 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 15:40:36,704 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 15:40:36,706 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 15:40:36,706 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 15:40:36,707 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 15:40:36,707 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 15:40:36,707 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 15:40:36,707 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 15:40:36,708 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 15:40:36,708 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 15:40:36,709 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 15:40:36,709 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 15:40:36,709 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 15:40:36,709 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 15:40:36,709 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 15:40:36,710 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 15:40:36,710 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 15:40:36,710 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 15:40:36,710 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 15:40:36,710 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 15:40:36,710 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 15:40:36,711 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 15:40:36,711 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 15:40:36,711 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 15:40:36,711 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 15:40:36,711 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 15:40:36,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:40:36,712 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 15:40:36,712 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 15:40:36,712 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 15:40:36,712 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 15:40:36,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 15:40:36,713 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 15:40:36,713 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 15:40:36,713 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 15:40:36,713 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 15:40:36,713 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 15:40:36,714 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d38eb9d6ba70070fe3ced1aec90f1c3400cc1f89786e1bd625a19020cb0869f Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 15:40:37,040 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 15:40:37,057 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 15:40:37,059 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 15:40:37,060 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 15:40:37,061 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 15:40:37,062 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-mts.wvr.c [2023-08-30 15:40:38,189 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 15:40:38,403 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 15:40:38,403 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-mts.wvr.c [2023-08-30 15:40:38,411 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa1519b25/5fe38706900e4561a33a04ac827c37fa/FLAG785a72d68 [2023-08-30 15:40:38,425 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa1519b25/5fe38706900e4561a33a04ac827c37fa [2023-08-30 15:40:38,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 15:40:38,428 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 15:40:38,429 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 15:40:38,429 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 15:40:38,432 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 15:40:38,433 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:40:38" (1/1) ... [2023-08-30 15:40:38,434 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@772d20ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:40:38, skipping insertion in model container [2023-08-30 15:40:38,434 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:40:38" (1/1) ... [2023-08-30 15:40:38,439 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 15:40:38,462 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 15:40:38,605 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-mts.wvr.c[2533,2546] [2023-08-30 15:40:38,617 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:40:38,629 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 15:40:38,662 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-mts.wvr.c[2533,2546] [2023-08-30 15:40:38,677 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:40:38,686 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:40:38,686 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:40:38,691 INFO L208 MainTranslator]: Completed translation [2023-08-30 15:40:38,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:40:38 WrapperNode [2023-08-30 15:40:38,692 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 15:40:38,693 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 15:40:38,694 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 15:40:38,694 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 15:40:38,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:40:38" (1/1) ... [2023-08-30 15:40:38,716 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:40:38" (1/1) ... [2023-08-30 15:40:38,754 INFO L138 Inliner]: procedures = 25, calls = 46, calls flagged for inlining = 13, calls inlined = 19, statements flattened = 306 [2023-08-30 15:40:38,758 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 15:40:38,760 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 15:40:38,761 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 15:40:38,761 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 15:40:38,769 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:40:38" (1/1) ... [2023-08-30 15:40:38,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:40:38" (1/1) ... [2023-08-30 15:40:38,783 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:40:38" (1/1) ... [2023-08-30 15:40:38,784 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:40:38" (1/1) ... [2023-08-30 15:40:38,792 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:40:38" (1/1) ... [2023-08-30 15:40:38,808 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:40:38" (1/1) ... [2023-08-30 15:40:38,810 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:40:38" (1/1) ... [2023-08-30 15:40:38,817 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:40:38" (1/1) ... [2023-08-30 15:40:38,826 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 15:40:38,830 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 15:40:38,830 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 15:40:38,831 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 15:40:38,831 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:40:38" (1/1) ... [2023-08-30 15:40:38,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:40:38,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:40:38,863 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) [2023-08-30 15:40:38,891 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 [2023-08-30 15:40:38,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 15:40:38,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 15:40:38,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 15:40:38,906 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 15:40:38,906 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 15:40:38,906 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 15:40:38,906 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 15:40:38,907 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 15:40:38,907 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 15:40:38,907 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 15:40:38,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 15:40:38,907 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 15:40:38,907 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 15:40:38,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 15:40:38,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 15:40:38,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 15:40:38,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 15:40:38,909 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 15:40:39,075 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 15:40:39,077 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 15:40:39,634 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 15:40:40,186 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 15:40:40,186 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 15:40:40,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:40:40 BoogieIcfgContainer [2023-08-30 15:40:40,190 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 15:40:40,192 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 15:40:40,192 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 15:40:40,195 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 15:40:40,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:40:38" (1/3) ... [2023-08-30 15:40:40,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b5b4d99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:40:40, skipping insertion in model container [2023-08-30 15:40:40,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:40:38" (2/3) ... [2023-08-30 15:40:40,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b5b4d99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:40:40, skipping insertion in model container [2023-08-30 15:40:40,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:40:40" (3/3) ... [2023-08-30 15:40:40,198 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-mts.wvr.c [2023-08-30 15:40:40,207 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 15:40:40,215 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 15:40:40,216 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2023-08-30 15:40:40,216 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 15:40:40,446 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 15:40:40,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 286 places, 299 transitions, 622 flow [2023-08-30 15:40:40,630 INFO L130 PetriNetUnfolder]: 23/296 cut-off events. [2023-08-30 15:40:40,633 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 15:40:40,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309 conditions, 296 events. 23/296 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 761 event pairs, 0 based on Foata normal form. 0/231 useless extension candidates. Maximal degree in co-relation 231. Up to 2 conditions per place. [2023-08-30 15:40:40,644 INFO L82 GeneralOperation]: Start removeDead. Operand has 286 places, 299 transitions, 622 flow [2023-08-30 15:40:40,656 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 264 places, 275 transitions, 568 flow [2023-08-30 15:40:40,662 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 15:40:40,680 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 264 places, 275 transitions, 568 flow [2023-08-30 15:40:40,685 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 264 places, 275 transitions, 568 flow [2023-08-30 15:40:40,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 264 places, 275 transitions, 568 flow [2023-08-30 15:40:40,778 INFO L130 PetriNetUnfolder]: 21/275 cut-off events. [2023-08-30 15:40:40,779 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 15:40:40,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288 conditions, 275 events. 21/275 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 711 event pairs, 0 based on Foata normal form. 0/213 useless extension candidates. Maximal degree in co-relation 231. Up to 2 conditions per place. [2023-08-30 15:40:40,794 INFO L119 LiptonReduction]: Number of co-enabled transitions 21924 [2023-08-30 15:41:03,738 INFO L134 LiptonReduction]: Checked pairs total: 26523 [2023-08-30 15:41:03,738 INFO L136 LiptonReduction]: Total number of compositions: 337 [2023-08-30 15:41:03,749 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 15:41:03,754 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;@27ebe4c0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 15:41:03,755 INFO L358 AbstractCegarLoop]: Starting to check reachability of 81 error locations. [2023-08-30 15:41:03,757 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 15:41:03,757 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 15:41:03,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:03,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 15:41:03,758 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-30 15:41:03,761 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:03,762 INFO L85 PathProgramCache]: Analyzing trace with hash 48150, now seen corresponding path program 1 times [2023-08-30 15:41:03,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:03,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401070094] [2023-08-30 15:41:03,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:03,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:03,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:04,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:41:04,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:04,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401070094] [2023-08-30 15:41:04,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401070094] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:41:04,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:41:04,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:41:04,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125663127] [2023-08-30 15:41:04,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:41:04,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:41:04,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:04,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:41:04,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:41:04,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 636 [2023-08-30 15:41:04,146 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 69 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 262.6666666666667) internal successors, (788), 3 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:04,146 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:04,146 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 636 [2023-08-30 15:41:04,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:09,774 INFO L130 PetriNetUnfolder]: 30525/38649 cut-off events. [2023-08-30 15:41:09,774 INFO L131 PetriNetUnfolder]: For 511/511 co-relation queries the response was YES. [2023-08-30 15:41:09,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78071 conditions, 38649 events. 30525/38649 cut-off events. For 511/511 co-relation queries the response was YES. Maximal size of possible extension queue 3851. Compared 217828 event pairs, 16960 based on Foata normal form. 0/9985 useless extension candidates. Maximal degree in co-relation 36512. Up to 19227 conditions per place. [2023-08-30 15:41:10,038 INFO L137 encePairwiseOnDemand]: 618/636 looper letters, 99 selfloop transitions, 2 changer transitions 0/104 dead transitions. [2023-08-30 15:41:10,040 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 104 transitions, 446 flow [2023-08-30 15:41:10,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:41:10,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:41:10,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 917 transitions. [2023-08-30 15:41:10,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4806079664570231 [2023-08-30 15:41:10,060 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 917 transitions. [2023-08-30 15:41:10,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 917 transitions. [2023-08-30 15:41:10,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:10,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 917 transitions. [2023-08-30 15:41:10,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 305.6666666666667) internal successors, (917), 3 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:10,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 636.0) internal successors, (2544), 4 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:10,087 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 636.0) internal successors, (2544), 4 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:10,089 INFO L175 Difference]: Start difference. First operand has 74 places, 69 transitions, 156 flow. Second operand 3 states and 917 transitions. [2023-08-30 15:41:10,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 104 transitions, 446 flow [2023-08-30 15:41:10,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 104 transitions, 422 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-30 15:41:10,297 INFO L231 Difference]: Finished difference. Result has 57 places, 56 transitions, 130 flow [2023-08-30 15:41:10,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=636, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=57, PETRI_TRANSITIONS=56} [2023-08-30 15:41:10,304 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -17 predicate places. [2023-08-30 15:41:10,306 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 56 transitions, 130 flow [2023-08-30 15:41:10,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 262.6666666666667) internal successors, (788), 3 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:10,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:10,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 15:41:10,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 15:41:10,308 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-30 15:41:10,316 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:10,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1495540, now seen corresponding path program 1 times [2023-08-30 15:41:10,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:10,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750876673] [2023-08-30 15:41:10,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:10,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:10,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:10,380 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:41:10,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:10,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750876673] [2023-08-30 15:41:10,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750876673] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:41:10,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:41:10,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:41:10,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969150884] [2023-08-30 15:41:10,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:41:10,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:41:10,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:10,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:41:10,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:41:10,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 636 [2023-08-30 15:41:10,395 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 56 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:10,395 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:10,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 636 [2023-08-30 15:41:10,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:15,248 INFO L130 PetriNetUnfolder]: 30525/38648 cut-off events. [2023-08-30 15:41:15,248 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2023-08-30 15:41:15,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77445 conditions, 38648 events. 30525/38648 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 4217. Compared 219084 event pairs, 16960 based on Foata normal form. 0/9921 useless extension candidates. Maximal degree in co-relation 38720. Up to 38448 conditions per place. [2023-08-30 15:41:15,466 INFO L137 encePairwiseOnDemand]: 634/636 looper letters, 51 selfloop transitions, 1 changer transitions 0/55 dead transitions. [2023-08-30 15:41:15,467 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 55 transitions, 230 flow [2023-08-30 15:41:15,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:41:15,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:41:15,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 838 transitions. [2023-08-30 15:41:15,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4392033542976939 [2023-08-30 15:41:15,471 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 838 transitions. [2023-08-30 15:41:15,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 838 transitions. [2023-08-30 15:41:15,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:15,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 838 transitions. [2023-08-30 15:41:15,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 279.3333333333333) internal successors, (838), 3 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:15,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 636.0) internal successors, (2544), 4 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:15,479 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 636.0) internal successors, (2544), 4 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:15,479 INFO L175 Difference]: Start difference. First operand has 57 places, 56 transitions, 130 flow. Second operand 3 states and 838 transitions. [2023-08-30 15:41:15,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 55 transitions, 230 flow [2023-08-30 15:41:15,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 55 transitions, 228 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:41:15,482 INFO L231 Difference]: Finished difference. Result has 57 places, 55 transitions, 126 flow [2023-08-30 15:41:15,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=636, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=57, PETRI_TRANSITIONS=55} [2023-08-30 15:41:15,483 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -17 predicate places. [2023-08-30 15:41:15,483 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 55 transitions, 126 flow [2023-08-30 15:41:15,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:15,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:15,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 15:41:15,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 15:41:15,485 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-30 15:41:15,487 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:15,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1495552, now seen corresponding path program 1 times [2023-08-30 15:41:15,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:15,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649149805] [2023-08-30 15:41:15,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:15,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:15,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:15,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:41:15,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:15,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649149805] [2023-08-30 15:41:15,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649149805] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:41:15,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938767491] [2023-08-30 15:41:15,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:15,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:41:15,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:41:15,582 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) [2023-08-30 15:41:15,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 15:41:15,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:15,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:41:15,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:41:15,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:41:15,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:41:15,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:41:15,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938767491] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:41:15,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:41:15,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 15:41:15,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240577072] [2023-08-30 15:41:15,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:41:15,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 15:41:15,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:15,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 15:41:15,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:41:15,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 636 [2023-08-30 15:41:15,810 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 55 transitions, 126 flow. Second operand has 7 states, 7 states have (on average 263.14285714285717) internal successors, (1842), 7 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:15,811 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:15,811 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 636 [2023-08-30 15:41:15,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:27,144 INFO L130 PetriNetUnfolder]: 76311/96617 cut-off events. [2023-08-30 15:41:27,145 INFO L131 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2023-08-30 15:41:27,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193596 conditions, 96617 events. 76311/96617 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 8184. Compared 591706 event pairs, 42400 based on Foata normal form. 0/25065 useless extension candidates. Maximal degree in co-relation 193588. Up to 19226 conditions per place. [2023-08-30 15:41:27,576 INFO L137 encePairwiseOnDemand]: 633/636 looper letters, 242 selfloop transitions, 5 changer transitions 0/250 dead transitions. [2023-08-30 15:41:27,577 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 250 transitions, 1040 flow [2023-08-30 15:41:27,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:41:27,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:41:27,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1822 transitions. [2023-08-30 15:41:27,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47746331236897277 [2023-08-30 15:41:27,582 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1822 transitions. [2023-08-30 15:41:27,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1822 transitions. [2023-08-30 15:41:27,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:27,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1822 transitions. [2023-08-30 15:41:27,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 303.6666666666667) internal successors, (1822), 6 states have internal predecessors, (1822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:27,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 636.0) internal successors, (4452), 7 states have internal predecessors, (4452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:27,595 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 636.0) internal successors, (4452), 7 states have internal predecessors, (4452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:27,595 INFO L175 Difference]: Start difference. First operand has 57 places, 55 transitions, 126 flow. Second operand 6 states and 1822 transitions. [2023-08-30 15:41:27,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 250 transitions, 1040 flow [2023-08-30 15:41:27,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 250 transitions, 1039 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:41:27,601 INFO L231 Difference]: Finished difference. Result has 64 places, 58 transitions, 161 flow [2023-08-30 15:41:27,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=636, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=161, PETRI_PLACES=64, PETRI_TRANSITIONS=58} [2023-08-30 15:41:27,602 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -10 predicate places. [2023-08-30 15:41:27,602 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 161 flow [2023-08-30 15:41:27,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 263.14285714285717) internal successors, (1842), 7 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:27,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:27,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 15:41:27,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 15:41:27,816 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 [2023-08-30 15:41:27,816 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-30 15:41:27,817 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:27,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1437414625, now seen corresponding path program 1 times [2023-08-30 15:41:27,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:27,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308703770] [2023-08-30 15:41:27,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:27,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:27,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:27,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:41:27,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:27,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308703770] [2023-08-30 15:41:27,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308703770] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:41:27,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:41:27,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 15:41:27,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952654762] [2023-08-30 15:41:27,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:41:27,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 15:41:27,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:27,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 15:41:27,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:41:27,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 636 [2023-08-30 15:41:27,963 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 58 transitions, 161 flow. Second operand has 5 states, 5 states have (on average 257.0) internal successors, (1285), 5 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:27,963 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:27,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 636 [2023-08-30 15:41:27,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:36,042 INFO L130 PetriNetUnfolder]: 54449/70695 cut-off events. [2023-08-30 15:41:36,042 INFO L131 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2023-08-30 15:41:36,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141725 conditions, 70695 events. 54449/70695 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 6967. Compared 455399 event pairs, 33964 based on Foata normal form. 1/19852 useless extension candidates. Maximal degree in co-relation 141713. Up to 70323 conditions per place. [2023-08-30 15:41:36,359 INFO L137 encePairwiseOnDemand]: 633/636 looper letters, 54 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2023-08-30 15:41:36,359 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 58 transitions, 273 flow [2023-08-30 15:41:36,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:41:36,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:41:36,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 822 transitions. [2023-08-30 15:41:36,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4308176100628931 [2023-08-30 15:41:36,362 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 822 transitions. [2023-08-30 15:41:36,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 822 transitions. [2023-08-30 15:41:36,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:36,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 822 transitions. [2023-08-30 15:41:36,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 274.0) internal successors, (822), 3 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:36,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 636.0) internal successors, (2544), 4 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:36,370 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 636.0) internal successors, (2544), 4 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:36,370 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 161 flow. Second operand 3 states and 822 transitions. [2023-08-30 15:41:36,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 58 transitions, 273 flow [2023-08-30 15:41:36,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 58 transitions, 263 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-30 15:41:36,372 INFO L231 Difference]: Finished difference. Result has 66 places, 58 transitions, 159 flow [2023-08-30 15:41:36,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=636, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=159, PETRI_PLACES=66, PETRI_TRANSITIONS=58} [2023-08-30 15:41:36,373 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -8 predicate places. [2023-08-30 15:41:36,373 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 58 transitions, 159 flow [2023-08-30 15:41:36,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 257.0) internal successors, (1285), 5 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:36,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:36,374 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 15:41:36,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 15:41:36,375 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-30 15:41:36,375 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:36,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1606828962, now seen corresponding path program 2 times [2023-08-30 15:41:36,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:36,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361440987] [2023-08-30 15:41:36,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:36,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:36,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:36,457 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:41:36,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:36,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361440987] [2023-08-30 15:41:36,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361440987] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:41:36,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291682305] [2023-08-30 15:41:36,459 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:41:36,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:41:36,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:41:36,461 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) [2023-08-30 15:41:36,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 15:41:36,614 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:41:36,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:41:36,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 15:41:36,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:41:36,639 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 15:41:36,639 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:41:36,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291682305] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:41:36,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:41:36,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 15:41:36,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489066773] [2023-08-30 15:41:36,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:41:36,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:41:36,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:36,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:41:36,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 15:41:36,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 636 [2023-08-30 15:41:36,654 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 58 transitions, 159 flow. Second operand has 3 states, 3 states have (on average 264.0) internal successors, (792), 3 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:36,654 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:36,654 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 636 [2023-08-30 15:41:36,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:45,033 INFO L130 PetriNetUnfolder]: 61049/77294 cut-off events. [2023-08-30 15:41:45,033 INFO L131 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2023-08-30 15:41:45,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154895 conditions, 77294 events. 61049/77294 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 7277. Compared 467549 event pairs, 33920 based on Foata normal form. 1/19843 useless extension candidates. Maximal degree in co-relation 154881. Up to 76894 conditions per place. [2023-08-30 15:41:45,360 INFO L137 encePairwiseOnDemand]: 634/636 looper letters, 53 selfloop transitions, 1 changer transitions 0/57 dead transitions. [2023-08-30 15:41:45,360 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 57 transitions, 257 flow [2023-08-30 15:41:45,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:41:45,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:41:45,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 840 transitions. [2023-08-30 15:41:45,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44025157232704404 [2023-08-30 15:41:45,362 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 840 transitions. [2023-08-30 15:41:45,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 840 transitions. [2023-08-30 15:41:45,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:45,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 840 transitions. [2023-08-30 15:41:45,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 280.0) internal successors, (840), 3 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:45,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 636.0) internal successors, (2544), 4 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:45,369 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 636.0) internal successors, (2544), 4 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:45,369 INFO L175 Difference]: Start difference. First operand has 66 places, 58 transitions, 159 flow. Second operand 3 states and 840 transitions. [2023-08-30 15:41:45,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 57 transitions, 257 flow [2023-08-30 15:41:45,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 57 transitions, 243 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-08-30 15:41:45,371 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 137 flow [2023-08-30 15:41:45,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=636, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=137, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2023-08-30 15:41:45,372 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -13 predicate places. [2023-08-30 15:41:45,372 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 137 flow [2023-08-30 15:41:45,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 264.0) internal successors, (792), 3 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:45,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:45,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 15:41:45,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 15:41:45,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:41:45,579 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-30 15:41:45,579 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:45,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1606937155, now seen corresponding path program 1 times [2023-08-30 15:41:45,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:45,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427437972] [2023-08-30 15:41:45,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:45,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:45,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:45,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:41:45,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:45,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427437972] [2023-08-30 15:41:45,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427437972] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:41:45,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836612989] [2023-08-30 15:41:45,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:45,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:41:45,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:41:45,866 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) [2023-08-30 15:41:45,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 15:41:45,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:45,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-30 15:41:45,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:41:46,048 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 [2023-08-30 15:41:46,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:41:46,090 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 [2023-08-30 15:41:46,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:41:46,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:41:46,154 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_173 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_173) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 9223372039002259456))) is different from false [2023-08-30 15:41:46,180 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:41:46,180 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 24 treesize of output 25 [2023-08-30 15:41:46,192 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:41:46,193 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 39 treesize of output 35 [2023-08-30 15:41:46,199 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 7 treesize of output 5 [2023-08-30 15:41:46,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-30 15:41:46,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836612989] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:41:46,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:41:46,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2023-08-30 15:41:46,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667105099] [2023-08-30 15:41:46,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:41:46,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 15:41:46,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:46,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 15:41:46,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=102, Unknown=1, NotChecked=20, Total=156 [2023-08-30 15:41:46,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 636 [2023-08-30 15:41:46,277 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 137 flow. Second operand has 13 states, 13 states have (on average 234.30769230769232) internal successors, (3046), 13 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:46,277 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:46,277 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 636 [2023-08-30 15:41:46,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:59,362 INFO L130 PetriNetUnfolder]: 88501/115186 cut-off events. [2023-08-30 15:41:59,362 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-30 15:41:59,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231141 conditions, 115186 events. 88501/115186 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 12025. Compared 795450 event pairs, 24032 based on Foata normal form. 0/32066 useless extension candidates. Maximal degree in co-relation 231131. Up to 66073 conditions per place. [2023-08-30 15:41:59,824 INFO L137 encePairwiseOnDemand]: 621/636 looper letters, 91 selfloop transitions, 21 changer transitions 0/114 dead transitions. [2023-08-30 15:41:59,825 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 114 transitions, 477 flow [2023-08-30 15:41:59,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 15:41:59,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 15:41:59,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1976 transitions. [2023-08-30 15:41:59,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38836477987421386 [2023-08-30 15:41:59,831 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1976 transitions. [2023-08-30 15:41:59,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1976 transitions. [2023-08-30 15:41:59,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:59,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1976 transitions. [2023-08-30 15:41:59,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 247.0) internal successors, (1976), 8 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:59,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 636.0) internal successors, (5724), 9 states have internal predecessors, (5724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:59,844 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 636.0) internal successors, (5724), 9 states have internal predecessors, (5724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:59,844 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 137 flow. Second operand 8 states and 1976 transitions. [2023-08-30 15:41:59,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 114 transitions, 477 flow [2023-08-30 15:41:59,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 114 transitions, 476 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:41:59,847 INFO L231 Difference]: Finished difference. Result has 70 places, 74 transitions, 254 flow [2023-08-30 15:41:59,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=636, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=254, PETRI_PLACES=70, PETRI_TRANSITIONS=74} [2023-08-30 15:41:59,848 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -4 predicate places. [2023-08-30 15:41:59,848 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 74 transitions, 254 flow [2023-08-30 15:41:59,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 234.30769230769232) internal successors, (3046), 13 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:59,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:59,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 15:41:59,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 15:42:00,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:42:00,055 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-30 15:42:00,056 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:42:00,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1606937177, now seen corresponding path program 1 times [2023-08-30 15:42:00,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:42:00,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276386043] [2023-08-30 15:42:00,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:42:00,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:42:00,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:42:00,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:42:00,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:42:00,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276386043] [2023-08-30 15:42:00,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276386043] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:42:00,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:42:00,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:42:00,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432934211] [2023-08-30 15:42:00,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:42:00,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:42:00,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:42:00,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:42:00,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:42:00,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 636 [2023-08-30 15:42:00,141 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 74 transitions, 254 flow. Second operand has 3 states, 3 states have (on average 264.6666666666667) internal successors, (794), 3 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:42:00,141 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:42:00,141 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 636 [2023-08-30 15:42:00,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:42:24,963 INFO L130 PetriNetUnfolder]: 165445/212978 cut-off events. [2023-08-30 15:42:24,963 INFO L131 PetriNetUnfolder]: For 15318/15318 co-relation queries the response was YES. [2023-08-30 15:42:25,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 464266 conditions, 212978 events. 165445/212978 cut-off events. For 15318/15318 co-relation queries the response was YES. Maximal size of possible extension queue 16076. Compared 1475280 event pairs, 52164 based on Foata normal form. 0/69474 useless extension candidates. Maximal degree in co-relation 464252. Up to 108902 conditions per place. [2023-08-30 15:42:25,987 INFO L137 encePairwiseOnDemand]: 631/636 looper letters, 118 selfloop transitions, 6 changer transitions 0/128 dead transitions. [2023-08-30 15:42:25,988 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 128 transitions, 668 flow [2023-08-30 15:42:25,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:42:25,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:42:25,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 885 transitions. [2023-08-30 15:42:25,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4638364779874214 [2023-08-30 15:42:25,990 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 885 transitions. [2023-08-30 15:42:25,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 885 transitions. [2023-08-30 15:42:25,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:42:25,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 885 transitions. [2023-08-30 15:42:25,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 295.0) internal successors, (885), 3 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:42:25,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 636.0) internal successors, (2544), 4 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:42:25,996 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 636.0) internal successors, (2544), 4 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:42:25,996 INFO L175 Difference]: Start difference. First operand has 70 places, 74 transitions, 254 flow. Second operand 3 states and 885 transitions. [2023-08-30 15:42:25,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 128 transitions, 668 flow [2023-08-30 15:42:26,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 128 transitions, 662 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 15:42:26,080 INFO L231 Difference]: Finished difference. Result has 72 places, 78 transitions, 304 flow [2023-08-30 15:42:26,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=636, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=304, PETRI_PLACES=72, PETRI_TRANSITIONS=78} [2023-08-30 15:42:26,081 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -2 predicate places. [2023-08-30 15:42:26,082 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 78 transitions, 304 flow [2023-08-30 15:42:26,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 264.6666666666667) internal successors, (794), 3 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:42:26,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:42:26,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 15:42:26,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 15:42:26,083 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-30 15:42:26,083 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:42:26,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1606937178, now seen corresponding path program 1 times [2023-08-30 15:42:26,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:42:26,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4863499] [2023-08-30 15:42:26,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:42:26,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:42:26,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:42:26,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:42:26,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:42:26,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4863499] [2023-08-30 15:42:26,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4863499] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:42:26,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:42:26,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:42:26,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746666784] [2023-08-30 15:42:26,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:42:26,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:42:26,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:42:26,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:42:26,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:42:26,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 636 [2023-08-30 15:42:26,148 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 78 transitions, 304 flow. Second operand has 3 states, 3 states have (on average 264.6666666666667) internal successors, (794), 3 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:42:26,148 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:42:26,149 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 636 [2023-08-30 15:42:26,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:42:50,527 INFO L130 PetriNetUnfolder]: 163377/210906 cut-off events. [2023-08-30 15:42:50,527 INFO L131 PetriNetUnfolder]: For 37896/37896 co-relation queries the response was YES. [2023-08-30 15:42:50,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 472707 conditions, 210906 events. 163377/210906 cut-off events. For 37896/37896 co-relation queries the response was YES. Maximal size of possible extension queue 16112. Compared 1475141 event pairs, 48812 based on Foata normal form. 0/78586 useless extension candidates. Maximal degree in co-relation 472691. Up to 112257 conditions per place. [2023-08-30 15:42:51,586 INFO L137 encePairwiseOnDemand]: 632/636 looper letters, 117 selfloop transitions, 4 changer transitions 0/125 dead transitions. [2023-08-30 15:42:51,586 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 125 transitions, 676 flow [2023-08-30 15:42:51,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:42:51,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:42:51,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 884 transitions. [2023-08-30 15:42:51,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46331236897274636 [2023-08-30 15:42:51,589 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 884 transitions. [2023-08-30 15:42:51,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 884 transitions. [2023-08-30 15:42:51,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:42:51,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 884 transitions. [2023-08-30 15:42:51,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 294.6666666666667) internal successors, (884), 3 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:42:51,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 636.0) internal successors, (2544), 4 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:42:51,595 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 636.0) internal successors, (2544), 4 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:42:51,595 INFO L175 Difference]: Start difference. First operand has 72 places, 78 transitions, 304 flow. Second operand 3 states and 884 transitions. [2023-08-30 15:42:51,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 125 transitions, 676 flow [2023-08-30 15:42:51,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 125 transitions, 664 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:42:51,700 INFO L231 Difference]: Finished difference. Result has 72 places, 75 transitions, 282 flow [2023-08-30 15:42:51,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=636, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=282, PETRI_PLACES=72, PETRI_TRANSITIONS=75} [2023-08-30 15:42:51,701 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -2 predicate places. [2023-08-30 15:42:51,701 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 75 transitions, 282 flow [2023-08-30 15:42:51,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 264.6666666666667) internal successors, (794), 3 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:42:51,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:42:51,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 15:42:51,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 15:42:51,702 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-30 15:42:51,702 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:42:51,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1606937179, now seen corresponding path program 1 times [2023-08-30 15:42:51,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:42:51,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918001047] [2023-08-30 15:42:51,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:42:51,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:42:51,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:42:51,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:42:51,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:42:51,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918001047] [2023-08-30 15:42:51,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918001047] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:42:51,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616097196] [2023-08-30 15:42:51,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:42:51,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:42:51,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:42:51,959 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) [2023-08-30 15:42:51,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 15:42:52,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:42:52,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-30 15:42:52,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:42:52,113 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 [2023-08-30 15:42:52,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:42:52,140 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 14 treesize of output 16 [2023-08-30 15:42:52,159 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:42:52,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:42:52,186 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_248 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_248) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 4294967296)) is different from false [2023-08-30 15:42:52,196 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:42:52,196 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 22 treesize of output 23 [2023-08-30 15:42:52,202 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:42:52,203 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 33 treesize of output 29 [2023-08-30 15:42:52,206 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 5 treesize of output 3 [2023-08-30 15:42:52,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-30 15:42:52,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616097196] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:42:52,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:42:52,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2023-08-30 15:42:52,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958544623] [2023-08-30 15:42:52,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:42:52,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 15:42:52,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:42:52,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 15:42:52,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=102, Unknown=1, NotChecked=20, Total=156 [2023-08-30 15:42:52,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 636 [2023-08-30 15:42:52,286 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 75 transitions, 282 flow. Second operand has 13 states, 13 states have (on average 234.30769230769232) internal successors, (3046), 13 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:42:52,287 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:42:52,287 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 636 [2023-08-30 15:42:52,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:43:17,543 INFO L130 PetriNetUnfolder]: 163693/213530 cut-off events. [2023-08-30 15:43:17,544 INFO L131 PetriNetUnfolder]: For 51400/51400 co-relation queries the response was YES. [2023-08-30 15:43:17,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 472151 conditions, 213530 events. 163693/213530 cut-off events. For 51400/51400 co-relation queries the response was YES. Maximal size of possible extension queue 17224. Compared 1546701 event pairs, 75848 based on Foata normal form. 0/77050 useless extension candidates. Maximal degree in co-relation 472135. Up to 174553 conditions per place. [2023-08-30 15:43:18,590 INFO L137 encePairwiseOnDemand]: 624/636 looper letters, 94 selfloop transitions, 24 changer transitions 0/120 dead transitions. [2023-08-30 15:43:18,590 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 120 transitions, 648 flow [2023-08-30 15:43:18,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 15:43:18,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 15:43:18,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1971 transitions. [2023-08-30 15:43:18,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3873820754716981 [2023-08-30 15:43:18,595 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1971 transitions. [2023-08-30 15:43:18,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1971 transitions. [2023-08-30 15:43:18,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:43:18,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1971 transitions. [2023-08-30 15:43:18,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 246.375) internal successors, (1971), 8 states have internal predecessors, (1971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:43:18,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 636.0) internal successors, (5724), 9 states have internal predecessors, (5724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:43:18,606 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 636.0) internal successors, (5724), 9 states have internal predecessors, (5724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:43:18,606 INFO L175 Difference]: Start difference. First operand has 72 places, 75 transitions, 282 flow. Second operand 8 states and 1971 transitions. [2023-08-30 15:43:18,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 120 transitions, 648 flow [2023-08-30 15:43:18,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 120 transitions, 642 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:43:18,726 INFO L231 Difference]: Finished difference. Result has 80 places, 81 transitions, 378 flow [2023-08-30 15:43:18,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=636, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=378, PETRI_PLACES=80, PETRI_TRANSITIONS=81} [2023-08-30 15:43:18,727 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 6 predicate places. [2023-08-30 15:43:18,727 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 81 transitions, 378 flow [2023-08-30 15:43:18,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 234.30769230769232) internal successors, (3046), 13 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:43:18,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:43:18,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:43:18,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 15:43:18,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:43:18,937 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-30 15:43:18,938 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:43:18,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1724162583, now seen corresponding path program 1 times [2023-08-30 15:43:18,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:43:18,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119608436] [2023-08-30 15:43:18,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:43:18,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:43:18,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:43:19,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:43:19,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:43:19,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119608436] [2023-08-30 15:43:19,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119608436] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:43:19,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064996855] [2023-08-30 15:43:19,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:43:19,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:43:19,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:43:19,358 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) [2023-08-30 15:43:19,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 15:43:19,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:43:19,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-30 15:43:19,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:43:19,526 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 [2023-08-30 15:43:19,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:43:19,570 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 [2023-08-30 15:43:19,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:43:19,600 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 [2023-08-30 15:43:19,614 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:43:19,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:43:19,640 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_292 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_292) c_~A~0.base) c_~A~0.offset) 9223372039002259456))) is different from false [2023-08-30 15:43:19,674 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:43:19,674 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 27 treesize of output 28 [2023-08-30 15:43:19,681 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:43:19,682 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 73 treesize of output 69 [2023-08-30 15:43:19,686 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 56 treesize of output 52 [2023-08-30 15:43:19,691 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 24 [2023-08-30 15:43:19,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:43:19,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064996855] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:43:19,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:43:19,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-08-30 15:43:19,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752868941] [2023-08-30 15:43:19,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:43:19,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 15:43:19,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:43:19,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 15:43:19,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=143, Unknown=1, NotChecked=24, Total=210 [2023-08-30 15:43:19,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 636 [2023-08-30 15:43:19,766 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 81 transitions, 378 flow. Second operand has 15 states, 15 states have (on average 231.26666666666668) internal successors, (3469), 15 states have internal predecessors, (3469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:43:19,766 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:43:19,766 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 636 [2023-08-30 15:43:19,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand