./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-counter-determinism.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-counter-determinism.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 65bf47faf943da19c0d2d15e35f35ceed9dd68ed50ac4355a0589bd57bf3d155 --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 08:04:33,633 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 08:04:33,635 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 08:04:33,678 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 08:04:33,680 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 08:04:33,683 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 08:04:33,685 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 08:04:33,687 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 08:04:33,689 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 08:04:33,694 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 08:04:33,695 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 08:04:33,697 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 08:04:33,697 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 08:04:33,699 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 08:04:33,699 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 08:04:33,700 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 08:04:33,700 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 08:04:33,701 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 08:04:33,702 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 08:04:33,703 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 08:04:33,717 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 08:04:33,718 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 08:04:33,719 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 08:04:33,720 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 08:04:33,723 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 08:04:33,727 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 08:04:33,727 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 08:04:33,728 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 08:04:33,729 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 08:04:33,730 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 08:04:33,730 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 08:04:33,733 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 08:04:33,734 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 08:04:33,735 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 08:04:33,736 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 08:04:33,737 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 08:04:33,738 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 08:04:33,738 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 08:04:33,738 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 08:04:33,739 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 08:04:33,739 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 08:04:33,741 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 08:04:33,775 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 08:04:33,776 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 08:04:33,781 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 08:04:33,781 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 08:04:33,782 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 08:04:33,782 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 08:04:33,783 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 08:04:33,783 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 08:04:33,783 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 08:04:33,783 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 08:04:33,784 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 08:04:33,784 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 08:04:33,785 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 08:04:33,785 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 08:04:33,785 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 08:04:33,785 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 08:04:33,785 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 08:04:33,786 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 08:04:33,786 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 08:04:33,786 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 08:04:33,786 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 08:04:33,786 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 08:04:33,787 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 08:04:33,787 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 08:04:33,787 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 08:04:33,787 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 08:04:33,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:04:33,788 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 08:04:33,788 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 08:04:33,788 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 08:04:33,788 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 08:04:33,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 08:04:33,789 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 08:04:33,789 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 08:04:33,789 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 08:04:33,789 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 08:04:33,789 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 08:04:33,790 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 65bf47faf943da19c0d2d15e35f35ceed9dd68ed50ac4355a0589bd57bf3d155 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 08:04:34,056 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 08:04:34,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 08:04:34,088 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 08:04:34,089 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 08:04:34,090 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 08:04:34,091 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-counter-determinism.wvr.c [2023-09-01 08:04:35,422 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 08:04:35,582 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 08:04:35,582 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-counter-determinism.wvr.c [2023-09-01 08:04:35,597 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/629e80869/956cfe892bda477f96a796ebe9bdbc76/FLAG9c6c00072 [2023-09-01 08:04:35,611 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/629e80869/956cfe892bda477f96a796ebe9bdbc76 [2023-09-01 08:04:35,614 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 08:04:35,616 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 08:04:35,618 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 08:04:35,618 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 08:04:35,621 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 08:04:35,621 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:04:35" (1/1) ... [2023-09-01 08:04:35,623 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35d56471 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:04:35, skipping insertion in model container [2023-09-01 08:04:35,623 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:04:35" (1/1) ... [2023-09-01 08:04:35,629 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 08:04:35,648 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 08:04:35,838 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-counter-determinism.wvr.c[2476,2489] [2023-09-01 08:04:35,843 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:04:35,852 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 08:04:35,894 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-counter-determinism.wvr.c[2476,2489] [2023-09-01 08:04:35,896 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:04:35,906 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:04:35,907 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:04:35,913 INFO L208 MainTranslator]: Completed translation [2023-09-01 08:04:35,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:04:35 WrapperNode [2023-09-01 08:04:35,913 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 08:04:35,915 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 08:04:35,915 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 08:04:35,916 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 08:04:35,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:04:35" (1/1) ... [2023-09-01 08:04:35,937 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:04:35" (1/1) ... [2023-09-01 08:04:35,966 INFO L138 Inliner]: procedures = 23, calls = 41, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 125 [2023-09-01 08:04:35,967 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 08:04:35,968 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 08:04:35,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 08:04:35,969 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 08:04:35,976 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:04:35" (1/1) ... [2023-09-01 08:04:35,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:04:35" (1/1) ... [2023-09-01 08:04:35,990 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:04:35" (1/1) ... [2023-09-01 08:04:35,991 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:04:35" (1/1) ... [2023-09-01 08:04:35,995 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:04:35" (1/1) ... [2023-09-01 08:04:36,005 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:04:35" (1/1) ... [2023-09-01 08:04:36,008 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:04:35" (1/1) ... [2023-09-01 08:04:36,016 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:04:35" (1/1) ... [2023-09-01 08:04:36,018 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 08:04:36,029 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 08:04:36,029 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 08:04:36,029 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 08:04:36,030 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:04:35" (1/1) ... [2023-09-01 08:04:36,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:04:36,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:04:36,062 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 08:04:36,087 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 08:04:36,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 08:04:36,103 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 08:04:36,103 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 08:04:36,103 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 08:04:36,104 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 08:04:36,104 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 08:04:36,104 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 08:04:36,104 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-09-01 08:04:36,104 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-09-01 08:04:36,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 08:04:36,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 08:04:36,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 08:04:36,105 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 08:04:36,105 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 08:04:36,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 08:04:36,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 08:04:36,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 08:04:36,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 08:04:36,107 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 08:04:36,219 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 08:04:36,220 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 08:04:36,550 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 08:04:36,662 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 08:04:36,667 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-09-01 08:04:36,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:04:36 BoogieIcfgContainer [2023-09-01 08:04:36,669 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 08:04:36,672 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 08:04:36,672 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 08:04:36,675 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 08:04:36,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 08:04:35" (1/3) ... [2023-09-01 08:04:36,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@482f8d18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:04:36, skipping insertion in model container [2023-09-01 08:04:36,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:04:35" (2/3) ... [2023-09-01 08:04:36,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@482f8d18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:04:36, skipping insertion in model container [2023-09-01 08:04:36,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:04:36" (3/3) ... [2023-09-01 08:04:36,679 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-counter-determinism.wvr.c [2023-09-01 08:04:36,687 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 08:04:36,712 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 08:04:36,712 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-09-01 08:04:36,712 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 08:04:36,803 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 08:04:36,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 142 transitions, 316 flow [2023-09-01 08:04:36,915 INFO L130 PetriNetUnfolder]: 9/138 cut-off events. [2023-09-01 08:04:36,915 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-09-01 08:04:36,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 138 events. 9/138 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 176 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 95. Up to 2 conditions per place. [2023-09-01 08:04:36,926 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 142 transitions, 316 flow [2023-09-01 08:04:36,934 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 123 places, 118 transitions, 257 flow [2023-09-01 08:04:36,937 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 08:04:36,945 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 123 places, 118 transitions, 257 flow [2023-09-01 08:04:36,953 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 123 places, 118 transitions, 257 flow [2023-09-01 08:04:36,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 118 transitions, 257 flow [2023-09-01 08:04:37,011 INFO L130 PetriNetUnfolder]: 8/118 cut-off events. [2023-09-01 08:04:37,012 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 08:04:37,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 118 events. 8/118 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 174 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 95. Up to 2 conditions per place. [2023-09-01 08:04:37,016 INFO L119 LiptonReduction]: Number of co-enabled transitions 5184 [2023-09-01 08:04:40,493 INFO L134 LiptonReduction]: Checked pairs total: 5612 [2023-09-01 08:04:40,493 INFO L136 LiptonReduction]: Total number of compositions: 99 [2023-09-01 08:04:40,506 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 08:04:40,511 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;@6552b3ae, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 08:04:40,512 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2023-09-01 08:04:40,515 INFO L130 PetriNetUnfolder]: 1/5 cut-off events. [2023-09-01 08:04:40,516 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 08:04:40,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:04:40,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 08:04:40,517 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-09-01 08:04:40,521 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:04:40,522 INFO L85 PathProgramCache]: Analyzing trace with hash 18267824, now seen corresponding path program 1 times [2023-09-01 08:04:40,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:04:40,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008827661] [2023-09-01 08:04:40,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:04:40,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:04:40,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:04:40,790 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 08:04:40,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:04:40,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008827661] [2023-09-01 08:04:40,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008827661] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:04:40,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:04:40,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:04:40,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581035486] [2023-09-01 08:04:40,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:04:40,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:04:40,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:04:40,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:04:40,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:04:40,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 241 [2023-09-01 08:04:40,840 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:40,840 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:04:40,840 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 241 [2023-09-01 08:04:40,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:04:43,200 INFO L130 PetriNetUnfolder]: 24827/29711 cut-off events. [2023-09-01 08:04:43,200 INFO L131 PetriNetUnfolder]: For 1094/1094 co-relation queries the response was YES. [2023-09-01 08:04:43,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60487 conditions, 29711 events. 24827/29711 cut-off events. For 1094/1094 co-relation queries the response was YES. Maximal size of possible extension queue 1970. Compared 127131 event pairs, 3037 based on Foata normal form. 0/8363 useless extension candidates. Maximal degree in co-relation 55466. Up to 26813 conditions per place. [2023-09-01 08:04:43,459 INFO L137 encePairwiseOnDemand]: 229/241 looper letters, 62 selfloop transitions, 4 changer transitions 0/70 dead transitions. [2023-09-01 08:04:43,459 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 70 transitions, 311 flow [2023-09-01 08:04:43,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:04:43,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:04:43,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 421 transitions. [2023-09-01 08:04:43,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5822959889349931 [2023-09-01 08:04:43,479 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 421 transitions. [2023-09-01 08:04:43,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 421 transitions. [2023-09-01 08:04:43,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:04:43,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 421 transitions. [2023-09-01 08:04:43,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:43,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:43,497 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:43,499 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 107 flow. Second operand 3 states and 421 transitions. [2023-09-01 08:04:43,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 70 transitions, 311 flow [2023-09-01 08:04:43,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 70 transitions, 287 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-09-01 08:04:43,544 INFO L231 Difference]: Finished difference. Result has 46 places, 44 transitions, 126 flow [2023-09-01 08:04:43,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=46, PETRI_TRANSITIONS=44} [2023-09-01 08:04:43,553 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -6 predicate places. [2023-09-01 08:04:43,554 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 44 transitions, 126 flow [2023-09-01 08:04:43,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:43,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:04:43,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 08:04:43,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 08:04:43,556 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-09-01 08:04:43,558 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:04:43,559 INFO L85 PathProgramCache]: Analyzing trace with hash 18267894, now seen corresponding path program 1 times [2023-09-01 08:04:43,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:04:43,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536413] [2023-09-01 08:04:43,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:04:43,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:04:43,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:04:43,653 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 08:04:43,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:04:43,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536413] [2023-09-01 08:04:43,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536413] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:04:43,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:04:43,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:04:43,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139892882] [2023-09-01 08:04:43,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:04:43,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:04:43,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:04:43,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:04:43,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:04:43,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 241 [2023-09-01 08:04:43,667 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:43,667 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:04:43,667 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 241 [2023-09-01 08:04:43,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:04:45,563 INFO L130 PetriNetUnfolder]: 23267/28351 cut-off events. [2023-09-01 08:04:45,564 INFO L131 PetriNetUnfolder]: For 1805/1833 co-relation queries the response was YES. [2023-09-01 08:04:45,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65445 conditions, 28351 events. 23267/28351 cut-off events. For 1805/1833 co-relation queries the response was YES. Maximal size of possible extension queue 2014. Compared 132799 event pairs, 11077 based on Foata normal form. 0/10525 useless extension candidates. Maximal degree in co-relation 56505. Up to 24812 conditions per place. [2023-09-01 08:04:45,765 INFO L137 encePairwiseOnDemand]: 237/241 looper letters, 63 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2023-09-01 08:04:45,766 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 68 transitions, 305 flow [2023-09-01 08:04:45,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:04:45,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:04:45,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 409 transitions. [2023-09-01 08:04:45,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5656984785615491 [2023-09-01 08:04:45,768 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 409 transitions. [2023-09-01 08:04:45,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 409 transitions. [2023-09-01 08:04:45,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:04:45,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 409 transitions. [2023-09-01 08:04:45,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:45,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:45,773 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:45,773 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 126 flow. Second operand 3 states and 409 transitions. [2023-09-01 08:04:45,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 68 transitions, 305 flow [2023-09-01 08:04:45,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 68 transitions, 303 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:04:45,776 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 118 flow [2023-09-01 08:04:45,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2023-09-01 08:04:45,778 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -5 predicate places. [2023-09-01 08:04:45,779 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 118 flow [2023-09-01 08:04:45,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:45,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:04:45,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 08:04:45,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 08:04:45,780 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-09-01 08:04:45,782 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:04:45,782 INFO L85 PathProgramCache]: Analyzing trace with hash 566305300, now seen corresponding path program 1 times [2023-09-01 08:04:45,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:04:45,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614048130] [2023-09-01 08:04:45,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:04:45,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:04:45,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:04:45,886 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 08:04:45,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:04:45,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614048130] [2023-09-01 08:04:45,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614048130] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:04:45,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380418250] [2023-09-01 08:04:45,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:04:45,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:04:45,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:04:45,894 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 08:04:45,917 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 08:04:45,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:04:45,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:04:45,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:04:46,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:04:46,010 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:04:46,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380418250] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:04:46,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:04:46,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-09-01 08:04:46,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556651229] [2023-09-01 08:04:46,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:04:46,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:04:46,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:04:46,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:04:46,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 08:04:46,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 241 [2023-09-01 08:04:46,022 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 115.25) internal successors, (461), 4 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:46,036 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:04:46,037 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 241 [2023-09-01 08:04:46,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:04:47,938 INFO L130 PetriNetUnfolder]: 22192/26674 cut-off events. [2023-09-01 08:04:47,939 INFO L131 PetriNetUnfolder]: For 1288/1288 co-relation queries the response was YES. [2023-09-01 08:04:47,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61559 conditions, 26674 events. 22192/26674 cut-off events. For 1288/1288 co-relation queries the response was YES. Maximal size of possible extension queue 1879. Compared 116737 event pairs, 3370 based on Foata normal form. 0/10005 useless extension candidates. Maximal degree in co-relation 52822. Up to 22650 conditions per place. [2023-09-01 08:04:48,081 INFO L137 encePairwiseOnDemand]: 238/241 looper letters, 81 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2023-09-01 08:04:48,081 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 86 transitions, 381 flow [2023-09-01 08:04:48,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:04:48,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:04:48,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 540 transitions. [2023-09-01 08:04:48,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5601659751037344 [2023-09-01 08:04:48,084 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 540 transitions. [2023-09-01 08:04:48,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 540 transitions. [2023-09-01 08:04:48,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:04:48,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 540 transitions. [2023-09-01 08:04:48,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:48,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 241.0) internal successors, (1205), 5 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:48,088 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 241.0) internal successors, (1205), 5 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:48,088 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 118 flow. Second operand 4 states and 540 transitions. [2023-09-01 08:04:48,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 86 transitions, 381 flow [2023-09-01 08:04:48,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 86 transitions, 377 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:04:48,091 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 114 flow [2023-09-01 08:04:48,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=114, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2023-09-01 08:04:48,092 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -5 predicate places. [2023-09-01 08:04:48,092 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 114 flow [2023-09-01 08:04:48,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 115.25) internal successors, (461), 4 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:48,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:04:48,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 08:04:48,103 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-09-01 08:04:48,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:04:48,300 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-09-01 08:04:48,301 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:04:48,301 INFO L85 PathProgramCache]: Analyzing trace with hash 566305299, now seen corresponding path program 1 times [2023-09-01 08:04:48,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:04:48,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593290100] [2023-09-01 08:04:48,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:04:48,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:04:48,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:04:48,394 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 08:04:48,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:04:48,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593290100] [2023-09-01 08:04:48,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593290100] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:04:48,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482290418] [2023-09-01 08:04:48,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:04:48,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:04:48,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:04:48,399 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 08:04:48,402 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 08:04:48,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:04:48,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:04:48,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:04:48,467 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 08:04:48,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:04:48,487 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 08:04:48,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482290418] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:04:48,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:04:48,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-09-01 08:04:48,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845432494] [2023-09-01 08:04:48,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:04:48,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 08:04:48,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:04:48,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 08:04:48,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:04:48,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 241 [2023-09-01 08:04:48,509 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 114 flow. Second operand has 7 states, 7 states have (on average 115.42857142857143) internal successors, (808), 7 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 08:04:48,510 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:04:48,510 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 241 [2023-09-01 08:04:48,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:04:52,691 INFO L130 PetriNetUnfolder]: 67466/80972 cut-off events. [2023-09-01 08:04:52,691 INFO L131 PetriNetUnfolder]: For 3016/3016 co-relation queries the response was YES. [2023-09-01 08:04:52,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187857 conditions, 80972 events. 67466/80972 cut-off events. For 3016/3016 co-relation queries the response was YES. Maximal size of possible extension queue 4744. Compared 400593 event pairs, 9188 based on Foata normal form. 0/30125 useless extension candidates. Maximal degree in co-relation 45797. Up to 23893 conditions per place. [2023-09-01 08:04:53,109 INFO L137 encePairwiseOnDemand]: 238/241 looper letters, 158 selfloop transitions, 5 changer transitions 0/166 dead transitions. [2023-09-01 08:04:53,109 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 166 transitions, 760 flow [2023-09-01 08:04:53,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 08:04:53,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 08:04:53,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 850 transitions. [2023-09-01 08:04:53,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5878284923928078 [2023-09-01 08:04:53,113 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 850 transitions. [2023-09-01 08:04:53,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 850 transitions. [2023-09-01 08:04:53,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:04:53,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 850 transitions. [2023-09-01 08:04:53,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 141.66666666666666) internal successors, (850), 6 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:53,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 241.0) internal successors, (1687), 7 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:53,119 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 241.0) internal successors, (1687), 7 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:53,119 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 114 flow. Second operand 6 states and 850 transitions. [2023-09-01 08:04:53,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 166 transitions, 760 flow [2023-09-01 08:04:53,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 166 transitions, 757 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:04:53,123 INFO L231 Difference]: Finished difference. Result has 53 places, 44 transitions, 147 flow [2023-09-01 08:04:53,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=147, PETRI_PLACES=53, PETRI_TRANSITIONS=44} [2023-09-01 08:04:53,124 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 1 predicate places. [2023-09-01 08:04:53,124 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 147 flow [2023-09-01 08:04:53,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 115.42857142857143) internal successors, (808), 7 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 08:04:53,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:04:53,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 08:04:53,135 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-09-01 08:04:53,329 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 08:04:53,330 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-09-01 08:04:53,330 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:04:53,331 INFO L85 PathProgramCache]: Analyzing trace with hash 566305230, now seen corresponding path program 1 times [2023-09-01 08:04:53,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:04:53,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531901137] [2023-09-01 08:04:53,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:04:53,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:04:53,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:04:53,398 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 08:04:53,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:04:53,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531901137] [2023-09-01 08:04:53,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531901137] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:04:53,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079778870] [2023-09-01 08:04:53,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:04:53,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:04:53,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:04:53,401 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 08:04:53,422 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 08:04:53,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:04:53,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:04:53,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:04:53,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:04:53,472 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:04:53,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079778870] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:04:53,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:04:53,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-09-01 08:04:53,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658038297] [2023-09-01 08:04:53,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:04:53,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:04:53,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:04:53,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:04:53,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 08:04:53,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 241 [2023-09-01 08:04:53,479 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 147 flow. Second operand has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:53,479 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:04:53,479 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 241 [2023-09-01 08:04:53,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:04:58,776 INFO L130 PetriNetUnfolder]: 80673/97647 cut-off events. [2023-09-01 08:04:58,776 INFO L131 PetriNetUnfolder]: For 18608/18608 co-relation queries the response was YES. [2023-09-01 08:04:58,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 232878 conditions, 97647 events. 80673/97647 cut-off events. For 18608/18608 co-relation queries the response was YES. Maximal size of possible extension queue 5747. Compared 503605 event pairs, 16780 based on Foata normal form. 0/42275 useless extension candidates. Maximal degree in co-relation 148700. Up to 53698 conditions per place. [2023-09-01 08:04:59,232 INFO L137 encePairwiseOnDemand]: 232/241 looper letters, 63 selfloop transitions, 12 changer transitions 0/79 dead transitions. [2023-09-01 08:04:59,232 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 79 transitions, 411 flow [2023-09-01 08:04:59,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:04:59,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:04:59,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 530 transitions. [2023-09-01 08:04:59,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.549792531120332 [2023-09-01 08:04:59,235 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 530 transitions. [2023-09-01 08:04:59,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 530 transitions. [2023-09-01 08:04:59,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:04:59,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 530 transitions. [2023-09-01 08:04:59,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 132.5) internal successors, (530), 4 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:59,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 241.0) internal successors, (1205), 5 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:59,241 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 241.0) internal successors, (1205), 5 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:59,241 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 147 flow. Second operand 4 states and 530 transitions. [2023-09-01 08:04:59,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 79 transitions, 411 flow [2023-09-01 08:04:59,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 79 transitions, 409 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:04:59,375 INFO L231 Difference]: Finished difference. Result has 56 places, 53 transitions, 267 flow [2023-09-01 08:04:59,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=267, PETRI_PLACES=56, PETRI_TRANSITIONS=53} [2023-09-01 08:04:59,376 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 4 predicate places. [2023-09-01 08:04:59,376 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 53 transitions, 267 flow [2023-09-01 08:04:59,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:59,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:04:59,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 08:04:59,382 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-09-01 08:04:59,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:04:59,582 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-09-01 08:04:59,583 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:04:59,583 INFO L85 PathProgramCache]: Analyzing trace with hash 566305231, now seen corresponding path program 1 times [2023-09-01 08:04:59,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:04:59,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553174788] [2023-09-01 08:04:59,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:04:59,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:04:59,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:04:59,636 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 08:04:59,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:04:59,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553174788] [2023-09-01 08:04:59,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553174788] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:04:59,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054793227] [2023-09-01 08:04:59,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:04:59,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:04:59,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:04:59,638 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 08:04:59,641 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 08:04:59,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:04:59,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:04:59,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:04:59,709 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 08:04:59,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:04:59,723 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 08:04:59,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054793227] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:04:59,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:04:59,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-09-01 08:04:59,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008871944] [2023-09-01 08:04:59,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:04:59,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 08:04:59,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:04:59,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 08:04:59,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:04:59,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 241 [2023-09-01 08:04:59,732 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 53 transitions, 267 flow. Second operand has 7 states, 7 states have (on average 116.57142857142857) internal successors, (816), 7 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:59,736 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:04:59,736 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 241 [2023-09-01 08:04:59,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:05:08,277 INFO L130 PetriNetUnfolder]: 119155/145739 cut-off events. [2023-09-01 08:05:08,278 INFO L131 PetriNetUnfolder]: For 76667/76667 co-relation queries the response was YES. [2023-09-01 08:05:08,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 391233 conditions, 145739 events. 119155/145739 cut-off events. For 76667/76667 co-relation queries the response was YES. Maximal size of possible extension queue 7619. Compared 817082 event pairs, 14619 based on Foata normal form. 12615/79130 useless extension candidates. Maximal degree in co-relation 164603. Up to 44008 conditions per place. [2023-09-01 08:05:09,058 INFO L137 encePairwiseOnDemand]: 233/241 looper letters, 151 selfloop transitions, 29 changer transitions 0/184 dead transitions. [2023-09-01 08:05:09,058 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 184 transitions, 1112 flow [2023-09-01 08:05:09,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 08:05:09,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 08:05:09,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 857 transitions. [2023-09-01 08:05:09,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5926694329183956 [2023-09-01 08:05:09,062 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 857 transitions. [2023-09-01 08:05:09,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 857 transitions. [2023-09-01 08:05:09,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:05:09,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 857 transitions. [2023-09-01 08:05:09,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 142.83333333333334) internal successors, (857), 6 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:09,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 241.0) internal successors, (1687), 7 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:09,071 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 241.0) internal successors, (1687), 7 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:09,071 INFO L175 Difference]: Start difference. First operand has 56 places, 53 transitions, 267 flow. Second operand 6 states and 857 transitions. [2023-09-01 08:05:09,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 184 transitions, 1112 flow [2023-09-01 08:05:09,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 184 transitions, 1055 flow, removed 28 selfloop flow, removed 1 redundant places. [2023-09-01 08:05:09,296 INFO L231 Difference]: Finished difference. Result has 64 places, 74 transitions, 581 flow [2023-09-01 08:05:09,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=581, PETRI_PLACES=64, PETRI_TRANSITIONS=74} [2023-09-01 08:05:09,296 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 12 predicate places. [2023-09-01 08:05:09,297 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 74 transitions, 581 flow [2023-09-01 08:05:09,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 116.57142857142857) internal successors, (816), 7 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:09,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:05:09,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:05:09,304 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-09-01 08:05:09,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:05:09,502 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-09-01 08:05:09,503 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:05:09,503 INFO L85 PathProgramCache]: Analyzing trace with hash 172971721, now seen corresponding path program 1 times [2023-09-01 08:05:09,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:05:09,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100649126] [2023-09-01 08:05:09,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:05:09,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:05:09,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:05:09,551 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 08:05:09,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:05:09,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100649126] [2023-09-01 08:05:09,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100649126] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:05:09,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:05:09,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:05:09,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668704423] [2023-09-01 08:05:09,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:05:09,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:05:09,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:05:09,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:05:09,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:05:09,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 241 [2023-09-01 08:05:09,563 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 74 transitions, 581 flow. Second operand has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:09,563 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:05:09,564 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 241 [2023-09-01 08:05:09,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:05:18,458 INFO L130 PetriNetUnfolder]: 122035/149977 cut-off events. [2023-09-01 08:05:18,458 INFO L131 PetriNetUnfolder]: For 144507/144507 co-relation queries the response was YES. [2023-09-01 08:05:18,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 425466 conditions, 149977 events. 122035/149977 cut-off events. For 144507/144507 co-relation queries the response was YES. Maximal size of possible extension queue 8004. Compared 846010 event pairs, 25803 based on Foata normal form. 0/70387 useless extension candidates. Maximal degree in co-relation 413772. Up to 127081 conditions per place. [2023-09-01 08:05:19,287 INFO L137 encePairwiseOnDemand]: 237/241 looper letters, 102 selfloop transitions, 4 changer transitions 0/109 dead transitions. [2023-09-01 08:05:19,287 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 109 transitions, 966 flow [2023-09-01 08:05:19,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:05:19,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:05:19,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 409 transitions. [2023-09-01 08:05:19,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5656984785615491 [2023-09-01 08:05:19,289 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 409 transitions. [2023-09-01 08:05:19,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 409 transitions. [2023-09-01 08:05:19,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:05:19,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 409 transitions. [2023-09-01 08:05:19,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:19,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:19,291 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:19,291 INFO L175 Difference]: Start difference. First operand has 64 places, 74 transitions, 581 flow. Second operand 3 states and 409 transitions. [2023-09-01 08:05:19,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 109 transitions, 966 flow [2023-09-01 08:05:22,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 109 transitions, 912 flow, removed 27 selfloop flow, removed 0 redundant places. [2023-09-01 08:05:22,094 INFO L231 Difference]: Finished difference. Result has 67 places, 77 transitions, 599 flow [2023-09-01 08:05:22,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=539, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=599, PETRI_PLACES=67, PETRI_TRANSITIONS=77} [2023-09-01 08:05:22,095 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 15 predicate places. [2023-09-01 08:05:22,095 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 77 transitions, 599 flow [2023-09-01 08:05:22,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:22,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:05:22,095 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-09-01 08:05:22,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 08:05:22,096 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-09-01 08:05:22,096 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:05:22,096 INFO L85 PathProgramCache]: Analyzing trace with hash 170235509, now seen corresponding path program 2 times [2023-09-01 08:05:22,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:05:22,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822703147] [2023-09-01 08:05:22,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:05:22,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:05:22,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:05:22,158 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 08:05:22,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:05:22,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822703147] [2023-09-01 08:05:22,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822703147] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:05:22,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088154713] [2023-09-01 08:05:22,160 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:05:22,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:05:22,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:05:22,161 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 08:05:22,163 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 08:05:22,226 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:05:22,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:05:22,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:05:22,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:05:22,243 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 08:05:22,243 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:05:22,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088154713] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:05:22,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:05:22,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2023-09-01 08:05:22,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852424278] [2023-09-01 08:05:22,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:05:22,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:05:22,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:05:22,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:05:22,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 08:05:22,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 241 [2023-09-01 08:05:22,258 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 77 transitions, 599 flow. Second operand has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:22,259 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:05:22,259 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 241 [2023-09-01 08:05:22,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:05:26,420 INFO L130 PetriNetUnfolder]: 58098/72192 cut-off events. [2023-09-01 08:05:26,420 INFO L131 PetriNetUnfolder]: For 94660/95516 co-relation queries the response was YES. [2023-09-01 08:05:26,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199843 conditions, 72192 events. 58098/72192 cut-off events. For 94660/95516 co-relation queries the response was YES. Maximal size of possible extension queue 3857. Compared 397481 event pairs, 32121 based on Foata normal form. 1961/39311 useless extension candidates. Maximal degree in co-relation 194438. Up to 71989 conditions per place. [2023-09-01 08:05:27,016 INFO L137 encePairwiseOnDemand]: 236/241 looper letters, 59 selfloop transitions, 1 changer transitions 0/64 dead transitions. [2023-09-01 08:05:27,016 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 64 transitions, 590 flow [2023-09-01 08:05:27,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:05:27,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:05:27,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 377 transitions. [2023-09-01 08:05:27,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5214384508990318 [2023-09-01 08:05:27,024 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 377 transitions. [2023-09-01 08:05:27,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 377 transitions. [2023-09-01 08:05:27,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:05:27,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 377 transitions. [2023-09-01 08:05:27,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:27,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:27,030 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:27,030 INFO L175 Difference]: Start difference. First operand has 67 places, 77 transitions, 599 flow. Second operand 3 states and 377 transitions. [2023-09-01 08:05:27,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 64 transitions, 590 flow [2023-09-01 08:05:27,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 64 transitions, 568 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-09-01 08:05:27,424 INFO L231 Difference]: Finished difference. Result has 61 places, 64 transitions, 450 flow [2023-09-01 08:05:27,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=450, PETRI_PLACES=61, PETRI_TRANSITIONS=64} [2023-09-01 08:05:27,425 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 9 predicate places. [2023-09-01 08:05:27,425 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 64 transitions, 450 flow [2023-09-01 08:05:27,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:27,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:05:27,426 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-09-01 08:05:27,432 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 08:05:27,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:05:27,632 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-09-01 08:05:27,632 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:05:27,633 INFO L85 PathProgramCache]: Analyzing trace with hash 170235441, now seen corresponding path program 2 times [2023-09-01 08:05:27,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:05:27,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602835750] [2023-09-01 08:05:27,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:05:27,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:05:27,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:05:27,724 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 08:05:27,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:05:27,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602835750] [2023-09-01 08:05:27,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602835750] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:05:27,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474905051] [2023-09-01 08:05:27,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:05:27,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:05:27,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:05:27,726 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 08:05:27,729 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 08:05:27,797 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 08:05:27,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:05:27,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 08:05:27,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:05:27,824 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 08:05:27,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:05:27,885 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 08:05:27,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474905051] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:05:27,886 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:05:27,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-09-01 08:05:27,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552694218] [2023-09-01 08:05:27,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:05:27,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 08:05:27,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:05:27,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 08:05:27,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-09-01 08:05:27,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 241 [2023-09-01 08:05:27,903 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 64 transitions, 450 flow. Second operand has 13 states, 13 states have (on average 116.3076923076923) internal successors, (1512), 13 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:27,903 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:05:27,903 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 241 [2023-09-01 08:05:27,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:05:38,485 INFO L130 PetriNetUnfolder]: 141525/175283 cut-off events. [2023-09-01 08:05:38,485 INFO L131 PetriNetUnfolder]: For 228636/230790 co-relation queries the response was YES. [2023-09-01 08:05:38,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 468587 conditions, 175283 events. 141525/175283 cut-off events. For 228636/230790 co-relation queries the response was YES. Maximal size of possible extension queue 7687. Compared 1020114 event pairs, 14542 based on Foata normal form. 12367/102284 useless extension candidates. Maximal degree in co-relation 468569. Up to 36193 conditions per place. [2023-09-01 08:05:39,687 INFO L137 encePairwiseOnDemand]: 235/241 looper letters, 281 selfloop transitions, 88 changer transitions 0/373 dead transitions. [2023-09-01 08:05:39,687 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 373 transitions, 2430 flow [2023-09-01 08:05:39,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 08:05:39,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 08:05:39,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1701 transitions. [2023-09-01 08:05:39,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5881742738589212 [2023-09-01 08:05:39,692 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1701 transitions. [2023-09-01 08:05:39,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1701 transitions. [2023-09-01 08:05:39,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:05:39,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1701 transitions. [2023-09-01 08:05:39,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 141.75) internal successors, (1701), 12 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:39,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 241.0) internal successors, (3133), 13 states have internal predecessors, (3133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:39,703 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 241.0) internal successors, (3133), 13 states have internal predecessors, (3133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:39,704 INFO L175 Difference]: Start difference. First operand has 61 places, 64 transitions, 450 flow. Second operand 12 states and 1701 transitions. [2023-09-01 08:05:39,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 373 transitions, 2430 flow [2023-09-01 08:05:40,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 373 transitions, 2429 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:05:40,010 INFO L231 Difference]: Finished difference. Result has 81 places, 133 transitions, 1583 flow [2023-09-01 08:05:40,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1583, PETRI_PLACES=81, PETRI_TRANSITIONS=133} [2023-09-01 08:05:40,011 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 29 predicate places. [2023-09-01 08:05:40,011 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 133 transitions, 1583 flow [2023-09-01 08:05:40,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 116.3076923076923) internal successors, (1512), 13 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:40,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:05:40,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:05:40,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-09-01 08:05:40,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:05:40,217 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-09-01 08:05:40,217 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:05:40,217 INFO L85 PathProgramCache]: Analyzing trace with hash 626393308, now seen corresponding path program 1 times [2023-09-01 08:05:40,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:05:40,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273979333] [2023-09-01 08:05:40,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:05:40,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:05:40,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:05:40,266 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 08:05:40,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:05:40,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273979333] [2023-09-01 08:05:40,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273979333] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:05:40,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:05:40,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:05:40,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757561023] [2023-09-01 08:05:40,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:05:40,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:05:40,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:05:40,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:05:40,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:05:40,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 241 [2023-09-01 08:05:40,273 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 133 transitions, 1583 flow. Second operand has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:40,274 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:05:40,274 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 241 [2023-09-01 08:05:40,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:05:51,277 INFO L130 PetriNetUnfolder]: 117405/151069 cut-off events. [2023-09-01 08:05:51,277 INFO L131 PetriNetUnfolder]: For 533954/536089 co-relation queries the response was YES. [2023-09-01 08:05:51,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 484213 conditions, 151069 events. 117405/151069 cut-off events. For 533954/536089 co-relation queries the response was YES. Maximal size of possible extension queue 7085. Compared 931545 event pairs, 19083 based on Foata normal form. 2130/89708 useless extension candidates. Maximal degree in co-relation 484184. Up to 132691 conditions per place. [2023-09-01 08:05:52,553 INFO L137 encePairwiseOnDemand]: 233/241 looper letters, 242 selfloop transitions, 3 changer transitions 2/251 dead transitions. [2023-09-01 08:05:52,553 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 251 transitions, 3613 flow [2023-09-01 08:05:52,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:05:52,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:05:52,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 401 transitions. [2023-09-01 08:05:52,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5546334716459198 [2023-09-01 08:05:52,555 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 401 transitions. [2023-09-01 08:05:52,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 401 transitions. [2023-09-01 08:05:52,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:05:52,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 401 transitions. [2023-09-01 08:05:52,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:52,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:52,558 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:52,558 INFO L175 Difference]: Start difference. First operand has 81 places, 133 transitions, 1583 flow. Second operand 3 states and 401 transitions. [2023-09-01 08:05:52,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 251 transitions, 3613 flow [2023-09-01 08:05:54,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 251 transitions, 3233 flow, removed 190 selfloop flow, removed 0 redundant places. [2023-09-01 08:05:54,288 INFO L231 Difference]: Finished difference. Result has 84 places, 135 transitions, 1420 flow [2023-09-01 08:05:54,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=1393, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1420, PETRI_PLACES=84, PETRI_TRANSITIONS=135} [2023-09-01 08:05:54,289 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 32 predicate places. [2023-09-01 08:05:54,289 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 135 transitions, 1420 flow [2023-09-01 08:05:54,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:54,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:05:54,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:05:54,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 08:05:54,290 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-09-01 08:05:54,290 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:05:54,290 INFO L85 PathProgramCache]: Analyzing trace with hash -2056641016, now seen corresponding path program 1 times [2023-09-01 08:05:54,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:05:54,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575432191] [2023-09-01 08:05:54,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:05:54,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:05:54,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:05:54,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:05:54,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:05:54,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575432191] [2023-09-01 08:05:54,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575432191] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:05:54,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:05:54,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:05:54,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921681032] [2023-09-01 08:05:54,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:05:54,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:05:54,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:05:54,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:05:54,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:05:54,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 241 [2023-09-01 08:05:54,337 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 135 transitions, 1420 flow. Second operand has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:54,337 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:05:54,337 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 241 [2023-09-01 08:05:54,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:06:04,340 INFO L130 PetriNetUnfolder]: 101881/132585 cut-off events. [2023-09-01 08:06:04,341 INFO L131 PetriNetUnfolder]: For 415588/417537 co-relation queries the response was YES. [2023-09-01 08:06:04,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 453462 conditions, 132585 events. 101881/132585 cut-off events. For 415588/417537 co-relation queries the response was YES. Maximal size of possible extension queue 5936. Compared 839720 event pairs, 13189 based on Foata normal form. 1944/101374 useless extension candidates. Maximal degree in co-relation 453430. Up to 123916 conditions per place. [2023-09-01 08:06:05,327 INFO L137 encePairwiseOnDemand]: 239/241 looper letters, 242 selfloop transitions, 1 changer transitions 0/246 dead transitions. [2023-09-01 08:06:05,328 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 246 transitions, 3232 flow [2023-09-01 08:06:05,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:06:05,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:06:05,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 389 transitions. [2023-09-01 08:06:05,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5380359612724758 [2023-09-01 08:06:05,329 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 389 transitions. [2023-09-01 08:06:05,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 389 transitions. [2023-09-01 08:06:05,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:06:05,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 389 transitions. [2023-09-01 08:06:05,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:06:05,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:06:05,332 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:06:05,332 INFO L175 Difference]: Start difference. First operand has 84 places, 135 transitions, 1420 flow. Second operand 3 states and 389 transitions. [2023-09-01 08:06:05,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 246 transitions, 3232 flow [2023-09-01 08:06:06,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 246 transitions, 3210 flow, removed 10 selfloop flow, removed 1 redundant places. [2023-09-01 08:06:06,043 INFO L231 Difference]: Finished difference. Result has 84 places, 133 transitions, 1401 flow [2023-09-01 08:06:06,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=1399, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1401, PETRI_PLACES=84, PETRI_TRANSITIONS=133} [2023-09-01 08:06:06,044 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 32 predicate places. [2023-09-01 08:06:06,044 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 133 transitions, 1401 flow [2023-09-01 08:06:06,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:06:06,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:06:06,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:06:06,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 08:06:06,044 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-09-01 08:06:06,045 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:06:06,045 INFO L85 PathProgramCache]: Analyzing trace with hash -2056641089, now seen corresponding path program 1 times [2023-09-01 08:06:06,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:06:06,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668068131] [2023-09-01 08:06:06,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:06:06,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:06:06,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:06:06,079 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 08:06:06,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:06:06,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668068131] [2023-09-01 08:06:06,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668068131] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:06:06,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162326600] [2023-09-01 08:06:06,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:06:06,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:06:06,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:06:06,094 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:06:06,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-09-01 08:06:06,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:06:06,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:06:06,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:06:06,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:06:06,192 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:06:06,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162326600] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:06:06,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:06:06,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-09-01 08:06:06,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010632933] [2023-09-01 08:06:06,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:06:06,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:06:06,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:06:06,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:06:06,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 08:06:06,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 241 [2023-09-01 08:06:06,197 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 133 transitions, 1401 flow. Second operand has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:06:06,197 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:06:06,197 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 241 [2023-09-01 08:06:06,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:06:17,197 INFO L130 PetriNetUnfolder]: 105919/137757 cut-off events. [2023-09-01 08:06:17,197 INFO L131 PetriNetUnfolder]: For 361996/363985 co-relation queries the response was YES. [2023-09-01 08:06:17,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 464334 conditions, 137757 events. 105919/137757 cut-off events. For 361996/363985 co-relation queries the response was YES. Maximal size of possible extension queue 5604. Compared 874736 event pairs, 28459 based on Foata normal form. 1984/106782 useless extension candidates. Maximal degree in co-relation 464302. Up to 76428 conditions per place. [2023-09-01 08:06:18,181 INFO L137 encePairwiseOnDemand]: 234/241 looper letters, 242 selfloop transitions, 7 changer transitions 0/253 dead transitions. [2023-09-01 08:06:18,181 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 253 transitions, 3247 flow [2023-09-01 08:06:18,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:06:18,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:06:18,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 514 transitions. [2023-09-01 08:06:18,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.533195020746888 [2023-09-01 08:06:18,183 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 514 transitions. [2023-09-01 08:06:18,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 514 transitions. [2023-09-01 08:06:18,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:06:18,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 514 transitions. [2023-09-01 08:06:18,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 128.5) internal successors, (514), 4 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:06:18,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 241.0) internal successors, (1205), 5 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:06:18,185 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 241.0) internal successors, (1205), 5 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:06:18,185 INFO L175 Difference]: Start difference. First operand has 84 places, 133 transitions, 1401 flow. Second operand 4 states and 514 transitions. [2023-09-01 08:06:18,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 253 transitions, 3247 flow [2023-09-01 08:06:20,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 253 transitions, 3246 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:06:20,217 INFO L231 Difference]: Finished difference. Result has 87 places, 137 transitions, 1453 flow [2023-09-01 08:06:20,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=1396, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1453, PETRI_PLACES=87, PETRI_TRANSITIONS=137} [2023-09-01 08:06:20,218 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 35 predicate places. [2023-09-01 08:06:20,218 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 137 transitions, 1453 flow [2023-09-01 08:06:20,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:06:20,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:06:20,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:06:20,224 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-09-01 08:06:20,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:06:20,420 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-09-01 08:06:20,420 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:06:20,420 INFO L85 PathProgramCache]: Analyzing trace with hash -2056641088, now seen corresponding path program 1 times [2023-09-01 08:06:20,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:06:20,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199043293] [2023-09-01 08:06:20,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:06:20,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:06:20,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:06:20,473 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 08:06:20,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:06:20,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199043293] [2023-09-01 08:06:20,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199043293] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:06:20,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56303997] [2023-09-01 08:06:20,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:06:20,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:06:20,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:06:20,475 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:06:20,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-09-01 08:06:20,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:06:20,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:06:20,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:06:20,583 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 08:06:20,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:06:20,602 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 08:06:20,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56303997] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:06:20,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:06:20,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-09-01 08:06:20,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736416034] [2023-09-01 08:06:20,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:06:20,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 08:06:20,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:06:20,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 08:06:20,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:06:20,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 241 [2023-09-01 08:06:20,612 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 137 transitions, 1453 flow. Second operand has 7 states, 7 states have (on average 118.28571428571429) internal successors, (828), 7 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:06:20,612 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:06:20,612 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 241 [2023-09-01 08:06:20,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:06:49,264 INFO L130 PetriNetUnfolder]: 235691/307825 cut-off events. [2023-09-01 08:06:49,264 INFO L131 PetriNetUnfolder]: For 1049653/1054126 co-relation queries the response was YES. [2023-09-01 08:06:50,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1176821 conditions, 307825 events. 235691/307825 cut-off events. For 1049653/1054126 co-relation queries the response was YES. Maximal size of possible extension queue 11246. Compared 2097413 event pairs, 29803 based on Foata normal form. 22864/284376 useless extension candidates. Maximal degree in co-relation 1176786. Up to 121319 conditions per place. [2023-09-01 08:06:52,056 INFO L137 encePairwiseOnDemand]: 235/241 looper letters, 599 selfloop transitions, 11 changer transitions 0/614 dead transitions. [2023-09-01 08:06:52,056 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 614 transitions, 8095 flow [2023-09-01 08:06:52,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 08:06:52,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 08:06:52,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 811 transitions. [2023-09-01 08:06:52,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5608575380359613 [2023-09-01 08:06:52,058 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 811 transitions. [2023-09-01 08:06:52,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 811 transitions. [2023-09-01 08:06:52,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:06:52,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 811 transitions. [2023-09-01 08:06:52,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 135.16666666666666) internal successors, (811), 6 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:06:52,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 241.0) internal successors, (1687), 7 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:06:52,061 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 241.0) internal successors, (1687), 7 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:06:52,061 INFO L175 Difference]: Start difference. First operand has 87 places, 137 transitions, 1453 flow. Second operand 6 states and 811 transitions. [2023-09-01 08:06:52,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 614 transitions, 8095 flow [2023-09-01 08:06:56,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 614 transitions, 8066 flow, removed 14 selfloop flow, removed 1 redundant places. [2023-09-01 08:06:56,389 INFO L231 Difference]: Finished difference. Result has 95 places, 146 transitions, 1572 flow [2023-09-01 08:06:56,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=1442, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1572, PETRI_PLACES=95, PETRI_TRANSITIONS=146} [2023-09-01 08:06:56,389 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 43 predicate places. [2023-09-01 08:06:56,390 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 146 transitions, 1572 flow [2023-09-01 08:06:56,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 118.28571428571429) internal successors, (828), 7 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:06:56,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:06:56,390 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:06:56,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-09-01 08:06:56,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-09-01 08:06:56,591 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-09-01 08:06:56,591 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:06:56,592 INFO L85 PathProgramCache]: Analyzing trace with hash 472409182, now seen corresponding path program 1 times [2023-09-01 08:06:56,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:06:56,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728138869] [2023-09-01 08:06:56,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:06:56,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:06:56,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:06:56,627 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:06:56,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:06:56,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728138869] [2023-09-01 08:06:56,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728138869] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:06:56,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:06:56,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:06:56,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821722524] [2023-09-01 08:06:56,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:06:56,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:06:56,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:06:56,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:06:56,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:06:56,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 241 [2023-09-01 08:06:56,636 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 146 transitions, 1572 flow. Second operand has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:06:56,636 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:06:56,636 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 241 [2023-09-01 08:06:56,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:07:20,734 INFO L130 PetriNetUnfolder]: 199041/260565 cut-off events. [2023-09-01 08:07:20,734 INFO L131 PetriNetUnfolder]: For 1061078/1061078 co-relation queries the response was YES. [2023-09-01 08:07:22,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1054969 conditions, 260565 events. 199041/260565 cut-off events. For 1061078/1061078 co-relation queries the response was YES. Maximal size of possible extension queue 8582. Compared 1725995 event pairs, 84865 based on Foata normal form. 0/240575 useless extension candidates. Maximal degree in co-relation 1054929. Up to 243352 conditions per place. [2023-09-01 08:07:23,313 INFO L137 encePairwiseOnDemand]: 239/241 looper letters, 162 selfloop transitions, 1 changer transitions 0/166 dead transitions. [2023-09-01 08:07:23,313 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 166 transitions, 1993 flow [2023-09-01 08:07:23,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:07:23,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:07:23,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 389 transitions. [2023-09-01 08:07:23,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5380359612724758 [2023-09-01 08:07:23,314 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 389 transitions. [2023-09-01 08:07:23,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 389 transitions. [2023-09-01 08:07:23,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:07:23,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 389 transitions. [2023-09-01 08:07:23,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:07:23,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:07:23,316 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:07:23,316 INFO L175 Difference]: Start difference. First operand has 95 places, 146 transitions, 1572 flow. Second operand 3 states and 389 transitions. [2023-09-01 08:07:23,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 166 transitions, 1993 flow [2023-09-01 08:07:38,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 166 transitions, 1985 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-09-01 08:07:38,365 INFO L231 Difference]: Finished difference. Result has 96 places, 124 transitions, 1314 flow [2023-09-01 08:07:38,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=1312, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1314, PETRI_PLACES=96, PETRI_TRANSITIONS=124} [2023-09-01 08:07:38,366 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 44 predicate places. [2023-09-01 08:07:38,366 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 124 transitions, 1314 flow [2023-09-01 08:07:38,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:07:38,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:07:38,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:07:38,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-09-01 08:07:38,367 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-09-01 08:07:38,367 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:07:38,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1683871860, now seen corresponding path program 1 times [2023-09-01 08:07:38,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:07:38,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657507379] [2023-09-01 08:07:38,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:07:38,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:07:38,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:07:38,413 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 08:07:38,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:07:38,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657507379] [2023-09-01 08:07:38,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657507379] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:07:38,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:07:38,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:07:38,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216026323] [2023-09-01 08:07:38,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:07:38,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:07:38,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:07:38,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:07:38,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:07:38,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 241 [2023-09-01 08:07:38,421 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 124 transitions, 1314 flow. Second operand has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:07:38,421 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:07:38,421 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 241 [2023-09-01 08:07:38,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:08:06,340 INFO L130 PetriNetUnfolder]: 219969/295043 cut-off events. [2023-09-01 08:08:06,341 INFO L131 PetriNetUnfolder]: For 1357651/1363550 co-relation queries the response was YES. [2023-09-01 08:08:07,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1144141 conditions, 295043 events. 219969/295043 cut-off events. For 1357651/1363550 co-relation queries the response was YES. Maximal size of possible extension queue 8524. Compared 2106152 event pairs, 111341 based on Foata normal form. 5894/289678 useless extension candidates. Maximal degree in co-relation 1144100. Up to 215383 conditions per place. [2023-09-01 08:08:09,399 INFO L137 encePairwiseOnDemand]: 238/241 looper letters, 219 selfloop transitions, 4 changer transitions 0/226 dead transitions. [2023-09-01 08:08:09,399 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 226 transitions, 2917 flow [2023-09-01 08:08:09,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:08:09,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:08:09,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 391 transitions. [2023-09-01 08:08:09,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5408022130013831 [2023-09-01 08:08:09,401 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 391 transitions. [2023-09-01 08:08:09,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 391 transitions. [2023-09-01 08:08:09,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:08:09,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 391 transitions. [2023-09-01 08:08:09,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:08:09,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:08:09,403 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:08:09,403 INFO L175 Difference]: Start difference. First operand has 96 places, 124 transitions, 1314 flow. Second operand 3 states and 391 transitions. [2023-09-01 08:08:09,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 226 transitions, 2917 flow [2023-09-01 08:08:32,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 226 transitions, 2916 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:08:32,399 INFO L231 Difference]: Finished difference. Result has 98 places, 127 transitions, 1367 flow [2023-09-01 08:08:32,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=1313, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1367, PETRI_PLACES=98, PETRI_TRANSITIONS=127} [2023-09-01 08:08:32,399 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 46 predicate places. [2023-09-01 08:08:32,399 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 127 transitions, 1367 flow [2023-09-01 08:08:32,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:08:32,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:08:32,400 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:08:32,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-09-01 08:08:32,400 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-09-01 08:08:32,400 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:08:32,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1683381859, now seen corresponding path program 2 times [2023-09-01 08:08:32,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:08:32,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072970881] [2023-09-01 08:08:32,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:08:32,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:08:32,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:08:32,456 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 08:08:32,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:08:32,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072970881] [2023-09-01 08:08:32,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072970881] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:08:32,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097743937] [2023-09-01 08:08:32,457 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:08:32,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:08:32,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:08:32,465 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:08:32,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-09-01 08:08:32,541 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 08:08:32,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:08:32,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 08:08:32,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:08:32,563 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 08:08:32,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:08:32,612 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 08:08:32,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097743937] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:08:32,613 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:08:32,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-09-01 08:08:32,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257186878] [2023-09-01 08:08:32,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:08:32,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 08:08:32,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:08:32,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 08:08:32,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-09-01 08:08:32,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 241 [2023-09-01 08:08:32,626 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 127 transitions, 1367 flow. Second operand has 13 states, 13 states have (on average 117.23076923076923) internal successors, (1524), 13 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:08:32,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:08:32,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 241 [2023-09-01 08:08:32,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:09:52,133 INFO L130 PetriNetUnfolder]: 561247/754029 cut-off events. [2023-09-01 08:09:52,133 INFO L131 PetriNetUnfolder]: For 4319189/4351126 co-relation queries the response was YES. [2023-09-01 08:09:56,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2990486 conditions, 754029 events. 561247/754029 cut-off events. For 4319189/4351126 co-relation queries the response was YES. Maximal size of possible extension queue 21091. Compared 5869610 event pairs, 50689 based on Foata normal form. 122600/834658 useless extension candidates. Maximal degree in co-relation 2990444. Up to 107656 conditions per place. [2023-09-01 08:09:59,474 INFO L137 encePairwiseOnDemand]: 235/241 looper letters, 1055 selfloop transitions, 72 changer transitions 0/1131 dead transitions. [2023-09-01 08:09:59,474 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 1131 transitions, 15016 flow [2023-09-01 08:09:59,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 08:09:59,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 08:09:59,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1628 transitions. [2023-09-01 08:09:59,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5629322268326418 [2023-09-01 08:09:59,478 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1628 transitions. [2023-09-01 08:09:59,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1628 transitions. [2023-09-01 08:09:59,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:09:59,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1628 transitions. [2023-09-01 08:09:59,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 135.66666666666666) internal successors, (1628), 12 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:09:59,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 241.0) internal successors, (3133), 13 states have internal predecessors, (3133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:09:59,488 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 241.0) internal successors, (3133), 13 states have internal predecessors, (3133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:09:59,488 INFO L175 Difference]: Start difference. First operand has 98 places, 127 transitions, 1367 flow. Second operand 12 states and 1628 transitions. [2023-09-01 08:09:59,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 1131 transitions, 15016 flow [2023-09-01 08:10:23,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 1131 transitions, 15005 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:10:23,645 INFO L231 Difference]: Finished difference. Result has 118 places, 191 transitions, 2369 flow [2023-09-01 08:10:23,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=1363, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2369, PETRI_PLACES=118, PETRI_TRANSITIONS=191} [2023-09-01 08:10:23,645 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 66 predicate places. [2023-09-01 08:10:23,645 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 191 transitions, 2369 flow [2023-09-01 08:10:23,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 117.23076923076923) internal successors, (1524), 13 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:10:23,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:10:23,646 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1] [2023-09-01 08:10:23,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-09-01 08:10:23,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-09-01 08:10:23,859 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-09-01 08:10:23,859 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:10:23,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1820938609, now seen corresponding path program 3 times [2023-09-01 08:10:23,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:10:23,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032849610] [2023-09-01 08:10:23,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:10:23,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:10:23,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:10:23,997 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:10:23,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:10:23,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032849610] [2023-09-01 08:10:23,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032849610] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:10:23,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854989935] [2023-09-01 08:10:23,997 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 08:10:23,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:10:23,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:10:23,998 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:10:23,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-09-01 08:10:24,080 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-09-01 08:10:24,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:10:24,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 13 conjunts are in the unsatisfiable core [2023-09-01 08:10:24,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:10:24,107 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:10:24,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:10:24,268 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:10:24,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854989935] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:10:24,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:10:24,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2023-09-01 08:10:24,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976452375] [2023-09-01 08:10:24,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:10:24,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-09-01 08:10:24,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:10:24,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-09-01 08:10:24,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-09-01 08:10:24,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 241 [2023-09-01 08:10:24,293 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 191 transitions, 2369 flow. Second operand has 25 states, 25 states have (on average 116.16) internal successors, (2904), 25 states have internal predecessors, (2904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:10:24,293 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:10:24,293 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 241 [2023-09-01 08:10:24,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand