./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-bad-ring-nondet.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-bad-ring-nondet.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 5fedede1a0cf545b0a275694256164e3eb4f49b22c80042adac647157728b27d --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 08:02:12,551 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 08:02:12,553 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 08:02:12,578 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 08:02:12,578 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 08:02:12,579 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 08:02:12,581 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 08:02:12,582 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 08:02:12,584 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 08:02:12,585 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 08:02:12,586 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 08:02:12,587 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 08:02:12,587 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 08:02:12,588 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 08:02:12,589 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 08:02:12,590 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 08:02:12,591 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 08:02:12,592 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 08:02:12,593 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 08:02:12,595 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 08:02:12,596 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 08:02:12,608 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 08:02:12,609 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 08:02:12,610 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 08:02:12,614 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 08:02:12,614 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 08:02:12,614 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 08:02:12,615 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 08:02:12,616 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 08:02:12,619 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 08:02:12,620 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 08:02:12,621 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 08:02:12,621 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 08:02:12,622 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 08:02:12,623 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 08:02:12,623 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 08:02:12,624 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 08:02:12,624 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 08:02:12,624 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 08:02:12,625 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 08:02:12,626 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 08:02:12,627 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 08:02:12,648 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 08:02:12,648 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 08:02:12,649 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 08:02:12,649 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 08:02:12,650 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 08:02:12,650 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 08:02:12,650 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 08:02:12,651 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 08:02:12,651 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 08:02:12,651 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 08:02:12,652 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 08:02:12,652 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 08:02:12,652 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 08:02:12,652 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 08:02:12,653 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 08:02:12,653 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 08:02:12,653 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 08:02:12,653 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 08:02:12,654 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 08:02:12,654 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 08:02:12,654 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 08:02:12,654 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 08:02:12,655 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 08:02:12,655 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 08:02:12,655 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 08:02:12,656 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 08:02:12,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:02:12,656 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 08:02:12,656 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 08:02:12,657 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 08:02:12,657 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 08:02:12,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 08:02:12,657 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 08:02:12,658 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 08:02:12,658 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 08:02:12,658 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 08:02:12,658 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 08:02:12,659 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fedede1a0cf545b0a275694256164e3eb4f49b22c80042adac647157728b27d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 08:02:12,967 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 08:02:12,988 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 08:02:12,991 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 08:02:12,992 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 08:02:12,993 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 08:02:12,995 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-ring-nondet.wvr.c [2023-09-01 08:02:14,164 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 08:02:14,395 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 08:02:14,396 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-ring-nondet.wvr.c [2023-09-01 08:02:14,402 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3abe8fe11/d40243a6897b487cb7f77bb198f95181/FLAG89f01b5fd [2023-09-01 08:02:14,415 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3abe8fe11/d40243a6897b487cb7f77bb198f95181 [2023-09-01 08:02:14,418 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 08:02:14,419 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 08:02:14,420 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 08:02:14,420 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 08:02:14,423 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 08:02:14,424 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:02:14" (1/1) ... [2023-09-01 08:02:14,425 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2977d43f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:02:14, skipping insertion in model container [2023-09-01 08:02:14,425 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:02:14" (1/1) ... [2023-09-01 08:02:14,431 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 08:02:14,448 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 08:02:14,656 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-bad-ring-nondet.wvr.c[4085,4098] [2023-09-01 08:02:14,670 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:02:14,684 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 08:02:14,724 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-bad-ring-nondet.wvr.c[4085,4098] [2023-09-01 08:02:14,738 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:02:14,749 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:02:14,750 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:02:14,756 INFO L208 MainTranslator]: Completed translation [2023-09-01 08:02:14,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:02:14 WrapperNode [2023-09-01 08:02:14,757 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 08:02:14,758 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 08:02:14,759 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 08:02:14,759 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 08:02:14,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:02:14" (1/1) ... [2023-09-01 08:02:14,777 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:02:14" (1/1) ... [2023-09-01 08:02:14,807 INFO L138 Inliner]: procedures = 25, calls = 63, calls flagged for inlining = 16, calls inlined = 20, statements flattened = 359 [2023-09-01 08:02:14,807 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 08:02:14,808 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 08:02:14,808 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 08:02:14,809 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 08:02:14,816 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:02:14" (1/1) ... [2023-09-01 08:02:14,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:02:14" (1/1) ... [2023-09-01 08:02:14,831 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:02:14" (1/1) ... [2023-09-01 08:02:14,832 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:02:14" (1/1) ... [2023-09-01 08:02:14,846 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:02:14" (1/1) ... [2023-09-01 08:02:14,858 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:02:14" (1/1) ... [2023-09-01 08:02:14,862 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:02:14" (1/1) ... [2023-09-01 08:02:14,870 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:02:14" (1/1) ... [2023-09-01 08:02:14,874 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 08:02:14,875 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 08:02:14,876 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 08:02:14,876 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 08:02:14,877 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:02:14" (1/1) ... [2023-09-01 08:02:14,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:02:14,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:02:14,906 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 08:02:14,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 08:02:14,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 08:02:14,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 08:02:14,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 08:02:14,952 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 08:02:14,952 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 08:02:14,953 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 08:02:14,953 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 08:02:14,953 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 08:02:14,953 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 08:02:14,953 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 08:02:14,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 08:02:14,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 08:02:14,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 08:02:14,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 08:02:14,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 08:02:14,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 08:02:14,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 08:02:14,956 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 08:02:15,137 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 08:02:15,139 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 08:02:15,690 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 08:02:15,941 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 08:02:15,942 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-09-01 08:02:15,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:02:15 BoogieIcfgContainer [2023-09-01 08:02:15,946 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 08:02:15,950 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 08:02:15,950 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 08:02:15,954 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 08:02:15,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 08:02:14" (1/3) ... [2023-09-01 08:02:15,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a3c30b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:02:15, skipping insertion in model container [2023-09-01 08:02:15,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:02:14" (2/3) ... [2023-09-01 08:02:15,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a3c30b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:02:15, skipping insertion in model container [2023-09-01 08:02:15,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:02:15" (3/3) ... [2023-09-01 08:02:15,959 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring-nondet.wvr.c [2023-09-01 08:02:15,966 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 08:02:15,974 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 08:02:15,974 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2023-09-01 08:02:15,974 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 08:02:16,126 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 08:02:16,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 291 places, 306 transitions, 636 flow [2023-09-01 08:02:16,329 INFO L130 PetriNetUnfolder]: 25/303 cut-off events. [2023-09-01 08:02:16,329 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 08:02:16,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 303 events. 25/303 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 386 event pairs, 0 based on Foata normal form. 0/246 useless extension candidates. Maximal degree in co-relation 257. Up to 4 conditions per place. [2023-09-01 08:02:16,340 INFO L82 GeneralOperation]: Start removeDead. Operand has 291 places, 306 transitions, 636 flow [2023-09-01 08:02:16,351 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 271 places, 285 transitions, 585 flow [2023-09-01 08:02:16,355 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 08:02:16,378 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 271 places, 285 transitions, 585 flow [2023-09-01 08:02:16,383 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 271 places, 285 transitions, 585 flow [2023-09-01 08:02:16,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 271 places, 285 transitions, 585 flow [2023-09-01 08:02:16,447 INFO L130 PetriNetUnfolder]: 24/285 cut-off events. [2023-09-01 08:02:16,448 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 08:02:16,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 285 events. 24/285 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 383 event pairs, 0 based on Foata normal form. 0/229 useless extension candidates. Maximal degree in co-relation 257. Up to 4 conditions per place. [2023-09-01 08:02:16,455 INFO L119 LiptonReduction]: Number of co-enabled transitions 6140 [2023-09-01 08:02:28,766 INFO L134 LiptonReduction]: Checked pairs total: 20631 [2023-09-01 08:02:28,767 INFO L136 LiptonReduction]: Total number of compositions: 312 [2023-09-01 08:02:28,779 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 08:02:28,785 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;@7ce701c0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 08:02:28,785 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2023-09-01 08:02:28,788 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-09-01 08:02:28,788 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 08:02:28,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:02:28,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 08:02:28,789 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-09-01 08:02:28,793 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:02:28,794 INFO L85 PathProgramCache]: Analyzing trace with hash 46041, now seen corresponding path program 1 times [2023-09-01 08:02:28,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:02:28,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19681331] [2023-09-01 08:02:28,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:02:28,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:02:28,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:02:29,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:02:29,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:02:29,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19681331] [2023-09-01 08:02:29,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19681331] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:02:29,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:02:29,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:02:29,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991629866] [2023-09-01 08:02:29,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:02:29,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:02:29,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:02:29,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:02:29,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:02:29,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 618 [2023-09-01 08:02:29,093 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 67 transitions, 149 flow. Second operand has 3 states, 3 states have (on average 244.66666666666666) internal successors, (734), 3 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:02:29,093 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:02:29,093 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 618 [2023-09-01 08:02:29,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:02:31,723 INFO L130 PetriNetUnfolder]: 16911/23581 cut-off events. [2023-09-01 08:02:31,724 INFO L131 PetriNetUnfolder]: For 848/848 co-relation queries the response was YES. [2023-09-01 08:02:31,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48007 conditions, 23581 events. 16911/23581 cut-off events. For 848/848 co-relation queries the response was YES. Maximal size of possible extension queue 1276. Compared 135456 event pairs, 14314 based on Foata normal form. 0/9865 useless extension candidates. Maximal degree in co-relation 22588. Up to 11795 conditions per place. [2023-09-01 08:02:31,888 INFO L137 encePairwiseOnDemand]: 598/618 looper letters, 105 selfloop transitions, 6 changer transitions 0/111 dead transitions. [2023-09-01 08:02:31,889 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 111 transitions, 474 flow [2023-09-01 08:02:31,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:02:31,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:02:31,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 865 transitions. [2023-09-01 08:02:31,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4665587918015103 [2023-09-01 08:02:31,909 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 865 transitions. [2023-09-01 08:02:31,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 865 transitions. [2023-09-01 08:02:31,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:02:31,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 865 transitions. [2023-09-01 08:02:31,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 288.3333333333333) internal successors, (865), 3 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:02:31,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 618.0) internal successors, (2472), 4 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:02:31,933 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 618.0) internal successors, (2472), 4 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:02:31,935 INFO L175 Difference]: Start difference. First operand has 67 places, 67 transitions, 149 flow. Second operand 3 states and 865 transitions. [2023-09-01 08:02:31,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 111 transitions, 474 flow [2023-09-01 08:02:31,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 111 transitions, 456 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-09-01 08:02:31,952 INFO L231 Difference]: Finished difference. Result has 60 places, 64 transitions, 180 flow [2023-09-01 08:02:31,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=618, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=60, PETRI_TRANSITIONS=64} [2023-09-01 08:02:31,958 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -7 predicate places. [2023-09-01 08:02:31,960 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 64 transitions, 180 flow [2023-09-01 08:02:31,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 244.66666666666666) internal successors, (734), 3 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:02:31,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:02:31,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 08:02:31,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 08:02:31,963 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-09-01 08:02:31,964 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:02:31,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1428610, now seen corresponding path program 1 times [2023-09-01 08:02:31,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:02:31,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903038490] [2023-09-01 08:02:31,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:02:31,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:02:32,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:02:32,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:02:32,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:02:32,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903038490] [2023-09-01 08:02:32,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903038490] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:02:32,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688131065] [2023-09-01 08:02:32,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:02:32,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:02:32,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:02:32,130 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:02:32,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 08:02:32,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:02:32,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:02:32,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:02:32,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:02:32,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:02:32,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:02:32,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688131065] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:02:32,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:02:32,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-09-01 08:02:32,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137767273] [2023-09-01 08:02:32,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:02:32,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 08:02:32,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:02:32,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 08:02:32,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-09-01 08:02:32,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 618 [2023-09-01 08:02:32,409 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 64 transitions, 180 flow. Second operand has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:02:32,409 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:02:32,409 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 618 [2023-09-01 08:02:32,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:02:37,834 INFO L130 PetriNetUnfolder]: 42285/58951 cut-off events. [2023-09-01 08:02:37,835 INFO L131 PetriNetUnfolder]: For 450/450 co-relation queries the response was YES. [2023-09-01 08:02:37,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119434 conditions, 58951 events. 42285/58951 cut-off events. For 450/450 co-relation queries the response was YES. Maximal size of possible extension queue 2808. Compared 379462 event pairs, 35785 based on Foata normal form. 0/24676 useless extension candidates. Maximal degree in co-relation 95463. Up to 11805 conditions per place. [2023-09-01 08:02:38,170 INFO L137 encePairwiseOnDemand]: 606/618 looper letters, 243 selfloop transitions, 33 changer transitions 0/276 dead transitions. [2023-09-01 08:02:38,170 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 276 transitions, 1240 flow [2023-09-01 08:02:38,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 08:02:38,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 08:02:38,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1749 transitions. [2023-09-01 08:02:38,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4716828478964401 [2023-09-01 08:02:38,176 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1749 transitions. [2023-09-01 08:02:38,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1749 transitions. [2023-09-01 08:02:38,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:02:38,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1749 transitions. [2023-09-01 08:02:38,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 291.5) internal successors, (1749), 6 states have internal predecessors, (1749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:02:38,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 618.0) internal successors, (4326), 7 states have internal predecessors, (4326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:02:38,191 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 618.0) internal successors, (4326), 7 states have internal predecessors, (4326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:02:38,191 INFO L175 Difference]: Start difference. First operand has 60 places, 64 transitions, 180 flow. Second operand 6 states and 1749 transitions. [2023-09-01 08:02:38,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 276 transitions, 1240 flow [2023-09-01 08:02:38,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 276 transitions, 1216 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:02:38,200 INFO L231 Difference]: Finished difference. Result has 66 places, 88 transitions, 387 flow [2023-09-01 08:02:38,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=618, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=387, PETRI_PLACES=66, PETRI_TRANSITIONS=88} [2023-09-01 08:02:38,202 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -1 predicate places. [2023-09-01 08:02:38,202 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 88 transitions, 387 flow [2023-09-01 08:02:38,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:02:38,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:02:38,203 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-09-01 08:02:38,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 08:02:38,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:02:38,410 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-09-01 08:02:38,411 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:02:38,412 INFO L85 PathProgramCache]: Analyzing trace with hash 44288250, now seen corresponding path program 1 times [2023-09-01 08:02:38,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:02:38,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728941049] [2023-09-01 08:02:38,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:02:38,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:02:38,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:02:38,501 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:02:38,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:02:38,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728941049] [2023-09-01 08:02:38,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728941049] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:02:38,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:02:38,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:02:38,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075274623] [2023-09-01 08:02:38,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:02:38,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:02:38,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:02:38,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:02:38,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:02:38,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 618 [2023-09-01 08:02:38,539 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 88 transitions, 387 flow. Second operand has 3 states, 3 states have (on average 245.33333333333334) internal successors, (736), 3 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:02:38,539 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:02:38,539 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 618 [2023-09-01 08:02:38,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:02:43,004 INFO L130 PetriNetUnfolder]: 42276/58939 cut-off events. [2023-09-01 08:02:43,004 INFO L131 PetriNetUnfolder]: For 455/455 co-relation queries the response was YES. [2023-09-01 08:02:43,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119437 conditions, 58939 events. 42276/58939 cut-off events. For 455/455 co-relation queries the response was YES. Maximal size of possible extension queue 2845. Compared 379467 event pairs, 35785 based on Foata normal form. 2/24677 useless extension candidates. Maximal degree in co-relation 71634. Up to 58939 conditions per place. [2023-09-01 08:02:43,244 INFO L137 encePairwiseOnDemand]: 614/618 looper letters, 75 selfloop transitions, 1 changer transitions 0/76 dead transitions. [2023-09-01 08:02:43,244 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 76 transitions, 458 flow [2023-09-01 08:02:43,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:02:43,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:02:43,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 791 transitions. [2023-09-01 08:02:43,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4266450916936354 [2023-09-01 08:02:43,249 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 791 transitions. [2023-09-01 08:02:43,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 791 transitions. [2023-09-01 08:02:43,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:02:43,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 791 transitions. [2023-09-01 08:02:43,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 263.6666666666667) internal successors, (791), 3 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:02:43,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 618.0) internal successors, (2472), 4 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:02:43,258 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 618.0) internal successors, (2472), 4 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:02:43,258 INFO L175 Difference]: Start difference. First operand has 66 places, 88 transitions, 387 flow. Second operand 3 states and 791 transitions. [2023-09-01 08:02:43,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 76 transitions, 458 flow [2023-09-01 08:02:43,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 76 transitions, 428 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-09-01 08:02:43,262 INFO L231 Difference]: Finished difference. Result has 64 places, 76 transitions, 278 flow [2023-09-01 08:02:43,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=618, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=278, PETRI_PLACES=64, PETRI_TRANSITIONS=76} [2023-09-01 08:02:43,263 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -3 predicate places. [2023-09-01 08:02:43,264 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 76 transitions, 278 flow [2023-09-01 08:02:43,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 245.33333333333334) internal successors, (736), 3 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:02:43,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:02:43,265 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-09-01 08:02:43,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 08:02:43,265 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-09-01 08:02:43,265 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:02:43,265 INFO L85 PathProgramCache]: Analyzing trace with hash -388622823, now seen corresponding path program 2 times [2023-09-01 08:02:43,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:02:43,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833070036] [2023-09-01 08:02:43,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:02:43,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:02:43,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:02:43,403 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:02:43,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:02:43,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833070036] [2023-09-01 08:02:43,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833070036] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:02:43,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149219257] [2023-09-01 08:02:43,406 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:02:43,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:02:43,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:02:43,408 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:02:43,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 08:02:43,504 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:02:43,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:02:43,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 08:02:43,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:02:43,524 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 08:02:43,525 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:02:43,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149219257] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:02:43,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:02:43,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-09-01 08:02:43,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183780868] [2023-09-01 08:02:43,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:02:43,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:02:43,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:02:43,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:02:43,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 08:02:43,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 618 [2023-09-01 08:02:43,562 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 76 transitions, 278 flow. Second operand has 3 states, 3 states have (on average 248.0) internal successors, (744), 3 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:02:43,562 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:02:43,562 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 618 [2023-09-01 08:02:43,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:02:47,857 INFO L130 PetriNetUnfolder]: 42276/58938 cut-off events. [2023-09-01 08:02:47,858 INFO L131 PetriNetUnfolder]: For 459/459 co-relation queries the response was YES. [2023-09-01 08:02:47,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119415 conditions, 58938 events. 42276/58938 cut-off events. For 459/459 co-relation queries the response was YES. Maximal size of possible extension queue 2846. Compared 379540 event pairs, 35785 based on Foata normal form. 1/24677 useless extension candidates. Maximal degree in co-relation 119403. Up to 58933 conditions per place. [2023-09-01 08:02:48,144 INFO L137 encePairwiseOnDemand]: 615/618 looper letters, 69 selfloop transitions, 6 changer transitions 0/75 dead transitions. [2023-09-01 08:02:48,145 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 75 transitions, 418 flow [2023-09-01 08:02:48,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:02:48,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:02:48,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 797 transitions. [2023-09-01 08:02:48,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4298813376483279 [2023-09-01 08:02:48,148 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 797 transitions. [2023-09-01 08:02:48,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 797 transitions. [2023-09-01 08:02:48,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:02:48,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 797 transitions. [2023-09-01 08:02:48,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 265.6666666666667) internal successors, (797), 3 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:02:48,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 618.0) internal successors, (2472), 4 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:02:48,156 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 618.0) internal successors, (2472), 4 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:02:48,156 INFO L175 Difference]: Start difference. First operand has 64 places, 76 transitions, 278 flow. Second operand 3 states and 797 transitions. [2023-09-01 08:02:48,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 75 transitions, 418 flow [2023-09-01 08:02:48,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 75 transitions, 417 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:02:48,159 INFO L231 Difference]: Finished difference. Result has 64 places, 75 transitions, 279 flow [2023-09-01 08:02:48,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=618, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=279, PETRI_PLACES=64, PETRI_TRANSITIONS=75} [2023-09-01 08:02:48,161 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -3 predicate places. [2023-09-01 08:02:48,161 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 75 transitions, 279 flow [2023-09-01 08:02:48,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 248.0) internal successors, (744), 3 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:02:48,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:02:48,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:02:48,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 08:02:48,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-09-01 08:02:48,369 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-09-01 08:02:48,369 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:02:48,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1816291730, now seen corresponding path program 1 times [2023-09-01 08:02:48,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:02:48,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965155043] [2023-09-01 08:02:48,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:02:48,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:02:48,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:02:48,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:02:48,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:02:48,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965155043] [2023-09-01 08:02:48,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965155043] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:02:48,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:02:48,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:02:48,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122803692] [2023-09-01 08:02:48,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:02:48,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:02:48,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:02:48,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:02:48,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 08:02:48,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 618 [2023-09-01 08:02:48,550 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 75 transitions, 279 flow. Second operand has 4 states, 4 states have (on average 240.75) internal successors, (963), 4 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:02:48,550 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:02:48,550 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 618 [2023-09-01 08:02:48,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:02:52,998 INFO L130 PetriNetUnfolder]: 42936/60075 cut-off events. [2023-09-01 08:02:52,999 INFO L131 PetriNetUnfolder]: For 465/465 co-relation queries the response was YES. [2023-09-01 08:02:53,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121786 conditions, 60075 events. 42936/60075 cut-off events. For 465/465 co-relation queries the response was YES. Maximal size of possible extension queue 2845. Compared 389527 event pairs, 36400 based on Foata normal form. 450/25983 useless extension candidates. Maximal degree in co-relation 121773. Up to 58937 conditions per place. [2023-09-01 08:02:53,282 INFO L137 encePairwiseOnDemand]: 610/618 looper letters, 107 selfloop transitions, 3 changer transitions 1/111 dead transitions. [2023-09-01 08:02:53,282 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 111 transitions, 648 flow [2023-09-01 08:02:53,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:02:53,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:02:53,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1042 transitions. [2023-09-01 08:02:53,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4215210355987055 [2023-09-01 08:02:53,286 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1042 transitions. [2023-09-01 08:02:53,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1042 transitions. [2023-09-01 08:02:53,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:02:53,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1042 transitions. [2023-09-01 08:02:53,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 260.5) internal successors, (1042), 4 states have internal predecessors, (1042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:02:53,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 618.0) internal successors, (3090), 5 states have internal predecessors, (3090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:02:53,299 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 618.0) internal successors, (3090), 5 states have internal predecessors, (3090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:02:53,299 INFO L175 Difference]: Start difference. First operand has 64 places, 75 transitions, 279 flow. Second operand 4 states and 1042 transitions. [2023-09-01 08:02:53,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 111 transitions, 648 flow [2023-09-01 08:02:53,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 111 transitions, 636 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:02:53,302 INFO L231 Difference]: Finished difference. Result has 66 places, 75 transitions, 284 flow [2023-09-01 08:02:53,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=618, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=284, PETRI_PLACES=66, PETRI_TRANSITIONS=75} [2023-09-01 08:02:53,305 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -1 predicate places. [2023-09-01 08:02:53,305 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 75 transitions, 284 flow [2023-09-01 08:02:53,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 240.75) internal successors, (963), 4 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:02:53,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:02:53,306 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-09-01 08:02:53,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 08:02:53,306 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-09-01 08:02:53,309 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:02:53,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1789992135, now seen corresponding path program 1 times [2023-09-01 08:02:53,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:02:53,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272288933] [2023-09-01 08:02:53,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:02:53,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:02:53,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:02:53,404 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:02:53,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:02:53,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272288933] [2023-09-01 08:02:53,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272288933] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:02:53,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746893595] [2023-09-01 08:02:53,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:02:53,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:02:53,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:02:53,406 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:02:53,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 08:02:53,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:02:53,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 08:02:53,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:02:53,534 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:02:53,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:02:53,594 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:02:53,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746893595] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:02:53,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:02:53,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-09-01 08:02:53,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298790850] [2023-09-01 08:02:53,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:02:53,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 08:02:53,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:02:53,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 08:02:53,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-09-01 08:02:53,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 618 [2023-09-01 08:02:53,739 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 75 transitions, 284 flow. Second operand has 13 states, 13 states have (on average 245.15384615384616) internal successors, (3187), 13 states have internal predecessors, (3187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:02:53,739 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:02:53,739 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 618 [2023-09-01 08:02:53,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:03:03,931 INFO L130 PetriNetUnfolder]: 94458/132159 cut-off events. [2023-09-01 08:03:03,931 INFO L131 PetriNetUnfolder]: For 7058/7058 co-relation queries the response was YES. [2023-09-01 08:03:04,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282408 conditions, 132159 events. 94458/132159 cut-off events. For 7058/7058 co-relation queries the response was YES. Maximal size of possible extension queue 4042. Compared 906978 event pairs, 80080 based on Foata normal form. 24/56174 useless extension candidates. Maximal degree in co-relation 282394. Up to 15840 conditions per place. [2023-09-01 08:03:04,486 INFO L137 encePairwiseOnDemand]: 610/618 looper letters, 524 selfloop transitions, 51 changer transitions 0/575 dead transitions. [2023-09-01 08:03:04,486 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 575 transitions, 2702 flow [2023-09-01 08:03:04,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 08:03:04,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 08:03:04,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3515 transitions. [2023-09-01 08:03:04,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.473975188781014 [2023-09-01 08:03:04,496 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3515 transitions. [2023-09-01 08:03:04,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3515 transitions. [2023-09-01 08:03:04,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:03:04,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3515 transitions. [2023-09-01 08:03:04,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 292.9166666666667) internal successors, (3515), 12 states have internal predecessors, (3515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:04,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 618.0) internal successors, (8034), 13 states have internal predecessors, (8034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:04,520 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 618.0) internal successors, (8034), 13 states have internal predecessors, (8034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:04,520 INFO L175 Difference]: Start difference. First operand has 66 places, 75 transitions, 284 flow. Second operand 12 states and 3515 transitions. [2023-09-01 08:03:04,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 575 transitions, 2702 flow [2023-09-01 08:03:04,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 575 transitions, 2696 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-09-01 08:03:04,529 INFO L231 Difference]: Finished difference. Result has 82 places, 105 transitions, 626 flow [2023-09-01 08:03:04,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=618, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=626, PETRI_PLACES=82, PETRI_TRANSITIONS=105} [2023-09-01 08:03:04,530 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 15 predicate places. [2023-09-01 08:03:04,530 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 105 transitions, 626 flow [2023-09-01 08:03:04,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 245.15384615384616) internal successors, (3187), 13 states have internal predecessors, (3187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:04,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:03:04,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:03:04,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 08:03:04,738 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 [2023-09-01 08:03:04,738 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-09-01 08:03:04,738 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:03:04,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1174360713, now seen corresponding path program 1 times [2023-09-01 08:03:04,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:03:04,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590098110] [2023-09-01 08:03:04,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:03:04,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:03:04,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:03:04,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:03:04,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:03:04,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590098110] [2023-09-01 08:03:04,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590098110] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:03:04,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977012214] [2023-09-01 08:03:04,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:03:04,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:03:04,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:03:04,881 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:03:04,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 08:03:04,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:03:05,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:03:05,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:03:05,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:03:05,017 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:03:05,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977012214] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:03:05,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:03:05,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-09-01 08:03:05,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476371395] [2023-09-01 08:03:05,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:03:05,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:03:05,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:03:05,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:03:05,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-09-01 08:03:05,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 618 [2023-09-01 08:03:05,026 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 105 transitions, 626 flow. Second operand has 3 states, 3 states have (on average 253.66666666666666) internal successors, (761), 3 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:05,026 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:03:05,026 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 618 [2023-09-01 08:03:05,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:03:13,339 INFO L130 PetriNetUnfolder]: 79850/111743 cut-off events. [2023-09-01 08:03:13,339 INFO L131 PetriNetUnfolder]: For 6558/6558 co-relation queries the response was YES. [2023-09-01 08:03:13,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234444 conditions, 111743 events. 79850/111743 cut-off events. For 6558/6558 co-relation queries the response was YES. Maximal size of possible extension queue 3439. Compared 749493 event pairs, 66968 based on Foata normal form. 0/49367 useless extension candidates. Maximal degree in co-relation 234423. Up to 111743 conditions per place. [2023-09-01 08:03:14,033 INFO L137 encePairwiseOnDemand]: 615/618 looper letters, 102 selfloop transitions, 1 changer transitions 0/103 dead transitions. [2023-09-01 08:03:14,033 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 103 transitions, 824 flow [2023-09-01 08:03:14,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:03:14,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:03:14,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 808 transitions. [2023-09-01 08:03:14,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43581445523193096 [2023-09-01 08:03:14,036 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 808 transitions. [2023-09-01 08:03:14,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 808 transitions. [2023-09-01 08:03:14,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:03:14,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 808 transitions. [2023-09-01 08:03:14,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 269.3333333333333) internal successors, (808), 3 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:14,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 618.0) internal successors, (2472), 4 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:14,041 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 618.0) internal successors, (2472), 4 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:14,041 INFO L175 Difference]: Start difference. First operand has 82 places, 105 transitions, 626 flow. Second operand 3 states and 808 transitions. [2023-09-01 08:03:14,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 103 transitions, 824 flow [2023-09-01 08:03:14,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 103 transitions, 680 flow, removed 39 selfloop flow, removed 5 redundant places. [2023-09-01 08:03:14,047 INFO L231 Difference]: Finished difference. Result has 77 places, 103 transitions, 476 flow [2023-09-01 08:03:14,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=618, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=476, PETRI_PLACES=77, PETRI_TRANSITIONS=103} [2023-09-01 08:03:14,048 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 10 predicate places. [2023-09-01 08:03:14,048 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 103 transitions, 476 flow [2023-09-01 08:03:14,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 253.66666666666666) internal successors, (761), 3 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:14,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:03:14,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:03:14,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 08:03:14,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:03:14,254 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-09-01 08:03:14,254 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:03:14,255 INFO L85 PathProgramCache]: Analyzing trace with hash 2045447239, now seen corresponding path program 1 times [2023-09-01 08:03:14,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:03:14,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387750597] [2023-09-01 08:03:14,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:03:14,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:03:14,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:03:14,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:03:14,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:03:14,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387750597] [2023-09-01 08:03:14,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387750597] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:03:14,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:03:14,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:03:14,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766302198] [2023-09-01 08:03:14,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:03:14,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:03:14,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:03:14,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:03:14,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:03:14,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 618 [2023-09-01 08:03:14,326 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 103 transitions, 476 flow. Second operand has 3 states, 3 states have (on average 254.0) internal successors, (762), 3 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:14,326 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:03:14,327 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 618 [2023-09-01 08:03:14,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:03:22,315 INFO L130 PetriNetUnfolder]: 74482/104175 cut-off events. [2023-09-01 08:03:22,316 INFO L131 PetriNetUnfolder]: For 6339/6339 co-relation queries the response was YES. [2023-09-01 08:03:22,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 218742 conditions, 104175 events. 74482/104175 cut-off events. For 6339/6339 co-relation queries the response was YES. Maximal size of possible extension queue 3192. Compared 691196 event pairs, 62040 based on Foata normal form. 0/46840 useless extension candidates. Maximal degree in co-relation 218721. Up to 104175 conditions per place. [2023-09-01 08:03:22,881 INFO L137 encePairwiseOnDemand]: 616/618 looper letters, 101 selfloop transitions, 1 changer transitions 0/102 dead transitions. [2023-09-01 08:03:22,881 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 102 transitions, 678 flow [2023-09-01 08:03:22,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:03:22,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:03:22,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 806 transitions. [2023-09-01 08:03:22,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43473570658036675 [2023-09-01 08:03:22,883 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 806 transitions. [2023-09-01 08:03:22,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 806 transitions. [2023-09-01 08:03:22,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:03:22,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 806 transitions. [2023-09-01 08:03:22,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 268.6666666666667) internal successors, (806), 3 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:22,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 618.0) internal successors, (2472), 4 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:22,887 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 618.0) internal successors, (2472), 4 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:22,887 INFO L175 Difference]: Start difference. First operand has 77 places, 103 transitions, 476 flow. Second operand 3 states and 806 transitions. [2023-09-01 08:03:22,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 102 transitions, 678 flow [2023-09-01 08:03:22,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 102 transitions, 677 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:03:22,892 INFO L231 Difference]: Finished difference. Result has 77 places, 102 transitions, 475 flow [2023-09-01 08:03:22,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=618, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=475, PETRI_PLACES=77, PETRI_TRANSITIONS=102} [2023-09-01 08:03:22,893 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 10 predicate places. [2023-09-01 08:03:22,893 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 102 transitions, 475 flow [2023-09-01 08:03:22,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 254.0) internal successors, (762), 3 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:22,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:03:22,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:03:22,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 08:03:22,895 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-09-01 08:03:22,895 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:03:22,895 INFO L85 PathProgramCache]: Analyzing trace with hash 2045447238, now seen corresponding path program 1 times [2023-09-01 08:03:22,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:03:22,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689534796] [2023-09-01 08:03:22,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:03:22,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:03:22,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:03:23,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:03:23,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:03:23,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689534796] [2023-09-01 08:03:23,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689534796] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:03:23,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028132065] [2023-09-01 08:03:23,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:03:23,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:03:23,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:03:23,079 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:03:23,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 08:03:23,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:03:23,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 08:03:23,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:03:23,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:03:23,250 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:03:23,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028132065] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:03:23,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:03:23,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2023-09-01 08:03:23,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817549932] [2023-09-01 08:03:23,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:03:23,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:03:23,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:03:23,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:03:23,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-09-01 08:03:23,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 618 [2023-09-01 08:03:23,276 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 102 transitions, 475 flow. Second operand has 4 states, 4 states have (on average 251.25) internal successors, (1005), 4 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:23,276 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:03:23,276 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 618 [2023-09-01 08:03:23,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:03:31,233 INFO L130 PetriNetUnfolder]: 76682/106375 cut-off events. [2023-09-01 08:03:31,234 INFO L131 PetriNetUnfolder]: For 6086/6086 co-relation queries the response was YES. [2023-09-01 08:03:31,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227543 conditions, 106375 events. 76682/106375 cut-off events. For 6086/6086 co-relation queries the response was YES. Maximal size of possible extension queue 3191. Compared 728068 event pairs, 27544 based on Foata normal form. 0/49040 useless extension candidates. Maximal degree in co-relation 227521. Up to 57469 conditions per place. [2023-09-01 08:03:31,790 INFO L137 encePairwiseOnDemand]: 610/618 looper letters, 120 selfloop transitions, 7 changer transitions 0/127 dead transitions. [2023-09-01 08:03:31,790 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 127 transitions, 788 flow [2023-09-01 08:03:31,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:03:31,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:03:31,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1074 transitions. [2023-09-01 08:03:31,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4344660194174757 [2023-09-01 08:03:31,793 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1074 transitions. [2023-09-01 08:03:31,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1074 transitions. [2023-09-01 08:03:31,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:03:31,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1074 transitions. [2023-09-01 08:03:31,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 268.5) internal successors, (1074), 4 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:31,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 618.0) internal successors, (3090), 5 states have internal predecessors, (3090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:31,800 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 618.0) internal successors, (3090), 5 states have internal predecessors, (3090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:31,800 INFO L175 Difference]: Start difference. First operand has 77 places, 102 transitions, 475 flow. Second operand 4 states and 1074 transitions. [2023-09-01 08:03:31,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 127 transitions, 788 flow [2023-09-01 08:03:31,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 127 transitions, 787 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:03:31,805 INFO L231 Difference]: Finished difference. Result has 80 places, 103 transitions, 511 flow [2023-09-01 08:03:31,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=618, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=511, PETRI_PLACES=80, PETRI_TRANSITIONS=103} [2023-09-01 08:03:31,806 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 13 predicate places. [2023-09-01 08:03:31,806 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 103 transitions, 511 flow [2023-09-01 08:03:31,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 251.25) internal successors, (1005), 4 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:31,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:03:31,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:03:31,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-09-01 08:03:32,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:03:32,013 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-09-01 08:03:32,013 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:03:32,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1015649919, now seen corresponding path program 1 times [2023-09-01 08:03:32,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:03:32,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621640575] [2023-09-01 08:03:32,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:03:32,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:03:32,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:03:32,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:03:32,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:03:32,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621640575] [2023-09-01 08:03:32,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621640575] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:03:32,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:03:32,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:03:32,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697776031] [2023-09-01 08:03:32,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:03:32,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:03:32,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:03:32,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:03:32,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:03:32,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 618 [2023-09-01 08:03:32,069 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 103 transitions, 511 flow. Second operand has 3 states, 3 states have (on average 255.33333333333334) internal successors, (766), 3 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:32,070 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:03:32,070 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 618 [2023-09-01 08:03:32,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:03:46,889 INFO L130 PetriNetUnfolder]: 135774/187467 cut-off events. [2023-09-01 08:03:46,890 INFO L131 PetriNetUnfolder]: For 60470/60470 co-relation queries the response was YES. [2023-09-01 08:03:47,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 446853 conditions, 187467 events. 135774/187467 cut-off events. For 60470/60470 co-relation queries the response was YES. Maximal size of possible extension queue 5151. Compared 1327460 event pairs, 61116 based on Foata normal form. 0/95130 useless extension candidates. Maximal degree in co-relation 446828. Up to 104902 conditions per place. [2023-09-01 08:03:47,949 INFO L137 encePairwiseOnDemand]: 614/618 looper letters, 141 selfloop transitions, 2 changer transitions 0/143 dead transitions. [2023-09-01 08:03:47,949 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 143 transitions, 908 flow [2023-09-01 08:03:47,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:03:47,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:03:47,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 847 transitions. [2023-09-01 08:03:47,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45685005393743255 [2023-09-01 08:03:47,951 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 847 transitions. [2023-09-01 08:03:47,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 847 transitions. [2023-09-01 08:03:47,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:03:47,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 847 transitions. [2023-09-01 08:03:47,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 282.3333333333333) internal successors, (847), 3 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:47,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 618.0) internal successors, (2472), 4 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:47,956 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 618.0) internal successors, (2472), 4 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:47,956 INFO L175 Difference]: Start difference. First operand has 80 places, 103 transitions, 511 flow. Second operand 3 states and 847 transitions. [2023-09-01 08:03:47,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 143 transitions, 908 flow [2023-09-01 08:03:48,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 143 transitions, 907 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:03:48,124 INFO L231 Difference]: Finished difference. Result has 82 places, 104 transitions, 528 flow [2023-09-01 08:03:48,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=618, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=528, PETRI_PLACES=82, PETRI_TRANSITIONS=104} [2023-09-01 08:03:48,125 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 15 predicate places. [2023-09-01 08:03:48,125 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 104 transitions, 528 flow [2023-09-01 08:03:48,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 255.33333333333334) internal successors, (766), 3 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:48,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:03:48,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:03:48,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 08:03:48,126 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-09-01 08:03:48,126 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:03:48,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1015649777, now seen corresponding path program 1 times [2023-09-01 08:03:48,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:03:48,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542352042] [2023-09-01 08:03:48,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:03:48,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:03:48,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:03:48,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:03:48,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:03:48,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542352042] [2023-09-01 08:03:48,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542352042] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:03:48,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:03:48,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 08:03:48,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319559632] [2023-09-01 08:03:48,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:03:48,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:03:48,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:03:48,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:03:48,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 08:03:48,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 618 [2023-09-01 08:03:48,252 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 104 transitions, 528 flow. Second operand has 4 states, 4 states have (on average 249.5) internal successors, (998), 4 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:48,252 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:03:48,252 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 618 [2023-09-01 08:03:48,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:04:20,491 INFO L130 PetriNetUnfolder]: 272306/372751 cut-off events. [2023-09-01 08:04:20,492 INFO L131 PetriNetUnfolder]: For 172956/172956 co-relation queries the response was YES. [2023-09-01 08:04:21,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 925915 conditions, 372751 events. 272306/372751 cut-off events. For 172956/172956 co-relation queries the response was YES. Maximal size of possible extension queue 9926. Compared 2733493 event pairs, 30371 based on Foata normal form. 6776/191688 useless extension candidates. Maximal degree in co-relation 925889. Up to 164088 conditions per place. [2023-09-01 08:04:22,998 INFO L137 encePairwiseOnDemand]: 608/618 looper letters, 191 selfloop transitions, 12 changer transitions 0/203 dead transitions. [2023-09-01 08:04:22,998 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 203 transitions, 1250 flow [2023-09-01 08:04:22,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 08:04:22,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 08:04:23,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1387 transitions. [2023-09-01 08:04:23,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4488673139158576 [2023-09-01 08:04:23,001 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1387 transitions. [2023-09-01 08:04:23,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1387 transitions. [2023-09-01 08:04:23,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:04:23,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1387 transitions. [2023-09-01 08:04:23,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 277.4) internal successors, (1387), 5 states have internal predecessors, (1387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:23,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 618.0) internal successors, (3708), 6 states have internal predecessors, (3708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:23,007 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 618.0) internal successors, (3708), 6 states have internal predecessors, (3708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:23,007 INFO L175 Difference]: Start difference. First operand has 82 places, 104 transitions, 528 flow. Second operand 5 states and 1387 transitions. [2023-09-01 08:04:23,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 203 transitions, 1250 flow [2023-09-01 08:04:23,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 203 transitions, 1245 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:04:23,139 INFO L231 Difference]: Finished difference. Result has 88 places, 115 transitions, 643 flow [2023-09-01 08:04:23,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=618, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=643, PETRI_PLACES=88, PETRI_TRANSITIONS=115} [2023-09-01 08:04:23,141 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 21 predicate places. [2023-09-01 08:04:23,141 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 115 transitions, 643 flow [2023-09-01 08:04:23,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 249.5) internal successors, (998), 4 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:23,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:04:23,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:04:23,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 08:04:23,142 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-09-01 08:04:23,143 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:04:23,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1362665638, now seen corresponding path program 1 times [2023-09-01 08:04:23,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:04:23,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672060597] [2023-09-01 08:04:23,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:04:23,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:04:23,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:04:23,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:04:23,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:04:23,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672060597] [2023-09-01 08:04:23,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672060597] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:04:23,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:04:23,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 08:04:23,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828134297] [2023-09-01 08:04:23,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:04:23,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:04:23,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:04:23,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:04:23,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 08:04:23,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 618 [2023-09-01 08:04:23,327 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 115 transitions, 643 flow. Second operand has 4 states, 4 states have (on average 241.75) internal successors, (967), 4 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:23,327 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:04:23,327 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 618 [2023-09-01 08:04:23,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:04:58,336 INFO L130 PetriNetUnfolder]: 279368/384083 cut-off events. [2023-09-01 08:04:58,337 INFO L131 PetriNetUnfolder]: For 329613/329613 co-relation queries the response was YES. [2023-09-01 08:04:59,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1107267 conditions, 384083 events. 279368/384083 cut-off events. For 329613/329613 co-relation queries the response was YES. Maximal size of possible extension queue 10196. Compared 2834283 event pairs, 209044 based on Foata normal form. 2530/197454 useless extension candidates. Maximal degree in co-relation 1107237. Up to 372739 conditions per place. [2023-09-01 08:05:01,027 INFO L137 encePairwiseOnDemand]: 603/618 looper letters, 134 selfloop transitions, 13 changer transitions 5/152 dead transitions. [2023-09-01 08:05:01,027 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 152 transitions, 1157 flow [2023-09-01 08:05:01,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:05:01,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:05:01,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1044 transitions. [2023-09-01 08:05:01,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4223300970873786 [2023-09-01 08:05:01,029 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1044 transitions. [2023-09-01 08:05:01,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1044 transitions. [2023-09-01 08:05:01,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:05:01,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1044 transitions. [2023-09-01 08:05:01,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 261.0) internal successors, (1044), 4 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:01,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 618.0) internal successors, (3090), 5 states have internal predecessors, (3090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:01,033 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 618.0) internal successors, (3090), 5 states have internal predecessors, (3090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:01,034 INFO L175 Difference]: Start difference. First operand has 88 places, 115 transitions, 643 flow. Second operand 4 states and 1044 transitions. [2023-09-01 08:05:01,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 152 transitions, 1157 flow [2023-09-01 08:05:01,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 152 transitions, 1150 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:05:01,605 INFO L231 Difference]: Finished difference. Result has 91 places, 115 transitions, 687 flow [2023-09-01 08:05:01,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=618, PETRI_DIFFERENCE_MINUEND_FLOW=636, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=687, PETRI_PLACES=91, PETRI_TRANSITIONS=115} [2023-09-01 08:05:01,605 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 24 predicate places. [2023-09-01 08:05:01,606 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 115 transitions, 687 flow [2023-09-01 08:05:01,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 241.75) internal successors, (967), 4 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:01,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:05:01,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:05:01,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 08:05:01,607 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-09-01 08:05:01,607 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:05:01,607 INFO L85 PathProgramCache]: Analyzing trace with hash 540127927, now seen corresponding path program 1 times [2023-09-01 08:05:01,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:05:01,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101331361] [2023-09-01 08:05:01,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:05:01,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:05:01,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:05:01,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:05:01,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:05:01,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101331361] [2023-09-01 08:05:01,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101331361] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:05:01,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:05:01,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 08:05:01,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431044392] [2023-09-01 08:05:01,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:05:01,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:05:01,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:05:01,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:05:01,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:05:01,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 618 [2023-09-01 08:05:01,708 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 115 transitions, 687 flow. Second operand has 3 states, 3 states have (on average 251.0) internal successors, (753), 3 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:01,708 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:05:01,708 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 618 [2023-09-01 08:05:01,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:05:26,508 INFO L130 PetriNetUnfolder]: 196901/275810 cut-off events. [2023-09-01 08:05:26,508 INFO L131 PetriNetUnfolder]: For 218085/218085 co-relation queries the response was YES. [2023-09-01 08:05:27,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 878989 conditions, 275810 events. 196901/275810 cut-off events. For 218085/218085 co-relation queries the response was YES. Maximal size of possible extension queue 7669. Compared 2064807 event pairs, 65956 based on Foata normal form. 4026/145238 useless extension candidates. Maximal degree in co-relation 878958. Up to 245642 conditions per place. [2023-09-01 08:05:28,474 INFO L137 encePairwiseOnDemand]: 614/618 looper letters, 147 selfloop transitions, 4 changer transitions 0/151 dead transitions. [2023-09-01 08:05:28,474 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 151 transitions, 1162 flow [2023-09-01 08:05:28,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:05:28,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:05:28,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 819 transitions. [2023-09-01 08:05:28,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.441747572815534 [2023-09-01 08:05:28,476 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 819 transitions. [2023-09-01 08:05:28,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 819 transitions. [2023-09-01 08:05:28,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:05:28,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 819 transitions. [2023-09-01 08:05:28,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:28,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 618.0) internal successors, (2472), 4 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:28,479 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 618.0) internal successors, (2472), 4 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:28,479 INFO L175 Difference]: Start difference. First operand has 91 places, 115 transitions, 687 flow. Second operand 3 states and 819 transitions. [2023-09-01 08:05:28,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 151 transitions, 1162 flow [2023-09-01 08:05:28,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 151 transitions, 1146 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-09-01 08:05:28,650 INFO L231 Difference]: Finished difference. Result has 93 places, 117 transitions, 703 flow [2023-09-01 08:05:28,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=618, PETRI_DIFFERENCE_MINUEND_FLOW=671, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=703, PETRI_PLACES=93, PETRI_TRANSITIONS=117} [2023-09-01 08:05:28,651 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 26 predicate places. [2023-09-01 08:05:28,651 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 117 transitions, 703 flow [2023-09-01 08:05:28,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 251.0) internal successors, (753), 3 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:28,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:05:28,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:05:28,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 08:05:28,652 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-09-01 08:05:28,652 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:05:28,653 INFO L85 PathProgramCache]: Analyzing trace with hash -2132870779, now seen corresponding path program 1 times [2023-09-01 08:05:28,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:05:28,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828449018] [2023-09-01 08:05:28,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:05:28,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:05:28,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:05:28,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:05:28,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:05:28,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828449018] [2023-09-01 08:05:28,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828449018] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:05:28,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:05:28,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:05:28,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780712262] [2023-09-01 08:05:28,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:05:28,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:05:28,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:05:28,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:05:28,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:05:28,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 618 [2023-09-01 08:05:28,712 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 117 transitions, 703 flow. Second operand has 3 states, 3 states have (on average 253.0) internal successors, (759), 3 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:28,712 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:05:28,712 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 618 [2023-09-01 08:05:28,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:05:50,640 INFO L130 PetriNetUnfolder]: 170512/239301 cut-off events. [2023-09-01 08:05:50,640 INFO L131 PetriNetUnfolder]: For 218352/218352 co-relation queries the response was YES. [2023-09-01 08:05:51,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 788213 conditions, 239301 events. 170512/239301 cut-off events. For 218352/218352 co-relation queries the response was YES. Maximal size of possible extension queue 6547. Compared 1738343 event pairs, 51590 based on Foata normal form. 2068/119464 useless extension candidates. Maximal degree in co-relation 788180. Up to 212411 conditions per place. [2023-09-01 08:05:52,355 INFO L137 encePairwiseOnDemand]: 608/618 looper letters, 136 selfloop transitions, 5 changer transitions 0/141 dead transitions. [2023-09-01 08:05:52,355 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 141 transitions, 1102 flow [2023-09-01 08:05:52,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:05:52,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:05:52,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 825 transitions. [2023-09-01 08:05:52,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4449838187702265 [2023-09-01 08:05:52,357 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 825 transitions. [2023-09-01 08:05:52,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 825 transitions. [2023-09-01 08:05:52,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:05:52,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 825 transitions. [2023-09-01 08:05:52,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 275.0) internal successors, (825), 3 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:52,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 618.0) internal successors, (2472), 4 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:52,361 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 618.0) internal successors, (2472), 4 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:52,361 INFO L175 Difference]: Start difference. First operand has 93 places, 117 transitions, 703 flow. Second operand 3 states and 825 transitions. [2023-09-01 08:05:52,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 141 transitions, 1102 flow [2023-09-01 08:05:52,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 141 transitions, 1098 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:05:52,529 INFO L231 Difference]: Finished difference. Result has 95 places, 121 transitions, 748 flow [2023-09-01 08:05:52,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=618, PETRI_DIFFERENCE_MINUEND_FLOW=699, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=748, PETRI_PLACES=95, PETRI_TRANSITIONS=121} [2023-09-01 08:05:52,529 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 28 predicate places. [2023-09-01 08:05:52,530 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 121 transitions, 748 flow [2023-09-01 08:05:52,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 253.0) internal successors, (759), 3 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:52,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:05:52,530 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:05:52,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-09-01 08:05:52,531 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-09-01 08:05:52,531 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:05:52,531 INFO L85 PathProgramCache]: Analyzing trace with hash 819260633, now seen corresponding path program 1 times [2023-09-01 08:05:52,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:05:52,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156341340] [2023-09-01 08:05:52,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:05:52,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:05:52,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:05:52,610 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:05:52,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:05:52,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156341340] [2023-09-01 08:05:52,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156341340] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:05:52,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983147481] [2023-09-01 08:05:52,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:05:52,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:05:52,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:05:52,614 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:05:52,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 08:05:52,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:05:52,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:05:52,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:05:52,759 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:05:52,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:05:52,776 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:05:52,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983147481] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:05:52,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:05:52,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-09-01 08:05:52,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014965393] [2023-09-01 08:05:52,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:05:52,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 08:05:52,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:05:52,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 08:05:52,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:05:52,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 618 [2023-09-01 08:05:52,790 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 121 transitions, 748 flow. Second operand has 7 states, 7 states have (on average 255.42857142857142) internal successors, (1788), 7 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:52,790 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:05:52,790 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 618 [2023-09-01 08:05:52,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand