./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-min-max-inc.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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-min-max-inc.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 24c46cfa0dbb54d68ea1c1d9e6e82d14a582b1d00782b6decedd8126f489ee67 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 02:43:33,661 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 02:43:33,668 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 02:43:33,702 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 02:43:33,702 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 02:43:33,705 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 02:43:33,713 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 02:43:33,716 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 02:43:33,718 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 02:43:33,722 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 02:43:33,723 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 02:43:33,726 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 02:43:33,726 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 02:43:33,728 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 02:43:33,730 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 02:43:33,735 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 02:43:33,736 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 02:43:33,738 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 02:43:33,739 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 02:43:33,744 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 02:43:33,745 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 02:43:33,746 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 02:43:33,747 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 02:43:33,748 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 02:43:33,754 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 02:43:33,754 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 02:43:33,755 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 02:43:33,755 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 02:43:33,756 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 02:43:33,757 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 02:43:33,757 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 02:43:33,759 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 02:43:33,761 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 02:43:33,761 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 02:43:33,762 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 02:43:33,762 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 02:43:33,763 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 02:43:33,763 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 02:43:33,763 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 02:43:33,764 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 02:43:33,764 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 02:43:33,766 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-31 02:43:33,793 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 02:43:33,793 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 02:43:33,794 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 02:43:33,794 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 02:43:33,795 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 02:43:33,795 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 02:43:33,796 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 02:43:33,796 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 02:43:33,796 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 02:43:33,796 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 02:43:33,797 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 02:43:33,797 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 02:43:33,798 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 02:43:33,798 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 02:43:33,798 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 02:43:33,798 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 02:43:33,798 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 02:43:33,798 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 02:43:33,799 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 02:43:33,799 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 02:43:33,799 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 02:43:33,799 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 02:43:33,799 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 02:43:33,799 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 02:43:33,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 02:43:33,800 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 02:43:33,800 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 02:43:33,800 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 02:43:33,800 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 02:43:33,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 02:43:33,801 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 02:43:33,801 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 02:43:33,801 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 02:43:33,801 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 02:43:33,802 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 02:43:33,802 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 24c46cfa0dbb54d68ea1c1d9e6e82d14a582b1d00782b6decedd8126f489ee67 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-31 02:43:34,132 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 02:43:34,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 02:43:34,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 02:43:34,154 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 02:43:34,154 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 02:43:34,155 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-min-max-inc.wvr.c [2023-08-31 02:43:35,329 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 02:43:35,556 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 02:43:35,556 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-min-max-inc.wvr.c [2023-08-31 02:43:35,562 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e44bfd6ec/7128e6e6ba3e436ca52648da0e9e2e9f/FLAG28d5bc27d [2023-08-31 02:43:35,572 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e44bfd6ec/7128e6e6ba3e436ca52648da0e9e2e9f [2023-08-31 02:43:35,574 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 02:43:35,574 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 02:43:35,577 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 02:43:35,577 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 02:43:35,580 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 02:43:35,581 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 02:43:35" (1/1) ... [2023-08-31 02:43:35,582 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b897bfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:43:35, skipping insertion in model container [2023-08-31 02:43:35,582 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 02:43:35" (1/1) ... [2023-08-31 02:43:35,588 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 02:43:35,617 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 02:43:35,753 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-min-max-inc.wvr.c[3018,3031] [2023-08-31 02:43:35,761 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 02:43:35,769 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 02:43:35,791 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-min-max-inc.wvr.c[3018,3031] [2023-08-31 02:43:35,794 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 02:43:35,801 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 02:43:35,802 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 02:43:35,806 INFO L208 MainTranslator]: Completed translation [2023-08-31 02:43:35,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:43:35 WrapperNode [2023-08-31 02:43:35,807 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 02:43:35,808 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 02:43:35,808 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 02:43:35,808 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 02:43:35,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:43:35" (1/1) ... [2023-08-31 02:43:35,819 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:43:35" (1/1) ... [2023-08-31 02:43:35,839 INFO L138 Inliner]: procedures = 26, calls = 63, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 139 [2023-08-31 02:43:35,840 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 02:43:35,841 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 02:43:35,847 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 02:43:35,847 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 02:43:35,854 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:43:35" (1/1) ... [2023-08-31 02:43:35,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:43:35" (1/1) ... [2023-08-31 02:43:35,857 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:43:35" (1/1) ... [2023-08-31 02:43:35,858 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:43:35" (1/1) ... [2023-08-31 02:43:35,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:43:35" (1/1) ... [2023-08-31 02:43:35,869 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:43:35" (1/1) ... [2023-08-31 02:43:35,871 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:43:35" (1/1) ... [2023-08-31 02:43:35,873 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:43:35" (1/1) ... [2023-08-31 02:43:35,875 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 02:43:35,876 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 02:43:35,876 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 02:43:35,876 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 02:43:35,877 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:43:35" (1/1) ... [2023-08-31 02:43:35,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 02:43:35,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 02:43:35,910 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-31 02:43:35,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-31 02:43:35,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 02:43:35,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 02:43:35,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 02:43:35,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 02:43:35,970 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-31 02:43:35,970 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-31 02:43:35,971 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-31 02:43:35,971 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-31 02:43:35,971 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-31 02:43:35,971 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-31 02:43:35,971 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-31 02:43:35,971 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-31 02:43:35,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 02:43:35,972 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-31 02:43:35,972 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-31 02:43:35,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-31 02:43:35,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 02:43:35,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 02:43:35,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 02:43:35,973 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 02:43:36,060 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 02:43:36,062 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 02:43:36,416 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 02:43:36,539 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 02:43:36,539 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-31 02:43:36,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 02:43:36 BoogieIcfgContainer [2023-08-31 02:43:36,542 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 02:43:36,543 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 02:43:36,543 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 02:43:36,546 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 02:43:36,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 02:43:35" (1/3) ... [2023-08-31 02:43:36,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7546e048 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 02:43:36, skipping insertion in model container [2023-08-31 02:43:36,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:43:35" (2/3) ... [2023-08-31 02:43:36,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7546e048 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 02:43:36, skipping insertion in model container [2023-08-31 02:43:36,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 02:43:36" (3/3) ... [2023-08-31 02:43:36,549 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-inc.wvr.c [2023-08-31 02:43:36,555 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 02:43:36,564 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 02:43:36,565 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-31 02:43:36,565 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 02:43:36,670 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-31 02:43:36,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 162 transitions, 356 flow [2023-08-31 02:43:36,806 INFO L130 PetriNetUnfolder]: 12/158 cut-off events. [2023-08-31 02:43:36,806 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-31 02:43:36,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 158 events. 12/158 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 115 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 126. Up to 2 conditions per place. [2023-08-31 02:43:36,813 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 162 transitions, 356 flow [2023-08-31 02:43:36,820 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 147 places, 146 transitions, 316 flow [2023-08-31 02:43:36,824 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 02:43:36,845 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 147 places, 146 transitions, 316 flow [2023-08-31 02:43:36,849 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 147 places, 146 transitions, 316 flow [2023-08-31 02:43:36,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 146 transitions, 316 flow [2023-08-31 02:43:36,913 INFO L130 PetriNetUnfolder]: 12/146 cut-off events. [2023-08-31 02:43:36,914 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-31 02:43:36,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 146 events. 12/146 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 114 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 126. Up to 2 conditions per place. [2023-08-31 02:43:36,919 INFO L119 LiptonReduction]: Number of co-enabled transitions 2280 [2023-08-31 02:43:41,735 INFO L134 LiptonReduction]: Checked pairs total: 3482 [2023-08-31 02:43:41,735 INFO L136 LiptonReduction]: Total number of compositions: 134 [2023-08-31 02:43:41,748 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 02:43:41,753 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;@66e16bbd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 02:43:41,754 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-31 02:43:41,760 INFO L130 PetriNetUnfolder]: 4/30 cut-off events. [2023-08-31 02:43:41,760 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-31 02:43:41,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:43:41,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 02:43:41,761 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-31 02:43:41,765 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:43:41,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1385427649, now seen corresponding path program 1 times [2023-08-31 02:43:41,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:43:41,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938842086] [2023-08-31 02:43:41,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:43:41,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:43:41,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:43:42,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 02:43:42,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:43:42,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938842086] [2023-08-31 02:43:42,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938842086] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 02:43:42,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 02:43:42,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 02:43:42,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505510698] [2023-08-31 02:43:42,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 02:43:42,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 02:43:42,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:43:42,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 02:43:42,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-31 02:43:42,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 296 [2023-08-31 02:43:42,339 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 31 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 141.5) internal successors, (566), 4 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:43:42,339 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:43:42,339 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 296 [2023-08-31 02:43:42,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:43:42,606 INFO L130 PetriNetUnfolder]: 1420/1898 cut-off events. [2023-08-31 02:43:42,607 INFO L131 PetriNetUnfolder]: For 113/113 co-relation queries the response was YES. [2023-08-31 02:43:42,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3999 conditions, 1898 events. 1420/1898 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 7098 event pairs, 765 based on Foata normal form. 0/1421 useless extension candidates. Maximal degree in co-relation 3498. Up to 1552 conditions per place. [2023-08-31 02:43:42,622 INFO L137 encePairwiseOnDemand]: 292/296 looper letters, 42 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2023-08-31 02:43:42,623 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 46 transitions, 215 flow [2023-08-31 02:43:42,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 02:43:42,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 02:43:42,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 586 transitions. [2023-08-31 02:43:42,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49493243243243246 [2023-08-31 02:43:42,644 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 586 transitions. [2023-08-31 02:43:42,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 586 transitions. [2023-08-31 02:43:42,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:43:42,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 586 transitions. [2023-08-31 02:43:42,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 146.5) internal successors, (586), 4 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:43:42,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 296.0) internal successors, (1480), 5 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:43:42,663 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 296.0) internal successors, (1480), 5 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:43:42,665 INFO L175 Difference]: Start difference. First operand has 40 places, 31 transitions, 86 flow. Second operand 4 states and 586 transitions. [2023-08-31 02:43:42,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 46 transitions, 215 flow [2023-08-31 02:43:42,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 46 transitions, 193 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-31 02:43:42,674 INFO L231 Difference]: Finished difference. Result has 36 places, 32 transitions, 84 flow [2023-08-31 02:43:42,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=84, PETRI_PLACES=36, PETRI_TRANSITIONS=32} [2023-08-31 02:43:42,708 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -4 predicate places. [2023-08-31 02:43:42,710 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 32 transitions, 84 flow [2023-08-31 02:43:42,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 141.5) internal successors, (566), 4 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:43:42,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:43:42,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 02:43:42,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 02:43:42,712 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-31 02:43:42,719 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:43:42,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1622835390, now seen corresponding path program 1 times [2023-08-31 02:43:42,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:43:42,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810529460] [2023-08-31 02:43:42,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:43:42,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:43:42,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:43:42,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 02:43:42,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:43:42,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810529460] [2023-08-31 02:43:42,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810529460] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 02:43:42,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 02:43:42,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 02:43:42,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679815919] [2023-08-31 02:43:42,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 02:43:42,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 02:43:42,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:43:42,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 02:43:42,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-31 02:43:42,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 296 [2023-08-31 02:43:42,895 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:43:42,895 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:43:42,895 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 296 [2023-08-31 02:43:42,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:43:43,150 INFO L130 PetriNetUnfolder]: 1718/2336 cut-off events. [2023-08-31 02:43:43,152 INFO L131 PetriNetUnfolder]: For 549/549 co-relation queries the response was YES. [2023-08-31 02:43:43,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5313 conditions, 2336 events. 1718/2336 cut-off events. For 549/549 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 8125 event pairs, 977 based on Foata normal form. 0/1943 useless extension candidates. Maximal degree in co-relation 2424. Up to 1790 conditions per place. [2023-08-31 02:43:43,163 INFO L137 encePairwiseOnDemand]: 292/296 looper letters, 47 selfloop transitions, 3 changer transitions 0/50 dead transitions. [2023-08-31 02:43:43,164 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 50 transitions, 233 flow [2023-08-31 02:43:43,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 02:43:43,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 02:43:43,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 589 transitions. [2023-08-31 02:43:43,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49746621621621623 [2023-08-31 02:43:43,167 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 589 transitions. [2023-08-31 02:43:43,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 589 transitions. [2023-08-31 02:43:43,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:43:43,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 589 transitions. [2023-08-31 02:43:43,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 147.25) internal successors, (589), 4 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:43:43,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 296.0) internal successors, (1480), 5 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:43:43,172 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 296.0) internal successors, (1480), 5 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:43:43,172 INFO L175 Difference]: Start difference. First operand has 36 places, 32 transitions, 84 flow. Second operand 4 states and 589 transitions. [2023-08-31 02:43:43,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 50 transitions, 233 flow [2023-08-31 02:43:43,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 50 transitions, 223 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-31 02:43:43,175 INFO L231 Difference]: Finished difference. Result has 38 places, 33 transitions, 92 flow [2023-08-31 02:43:43,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=92, PETRI_PLACES=38, PETRI_TRANSITIONS=33} [2023-08-31 02:43:43,177 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2023-08-31 02:43:43,178 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 92 flow [2023-08-31 02:43:43,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:43:43,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:43:43,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 02:43:43,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 02:43:43,179 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-31 02:43:43,181 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:43:43,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1337805984, now seen corresponding path program 1 times [2023-08-31 02:43:43,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:43:43,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890899855] [2023-08-31 02:43:43,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:43:43,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:43:43,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:43:43,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 02:43:43,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:43:43,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890899855] [2023-08-31 02:43:43,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890899855] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 02:43:43,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 02:43:43,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 02:43:43,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757398432] [2023-08-31 02:43:43,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 02:43:43,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 02:43:43,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:43:43,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 02:43:43,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-31 02:43:43,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 296 [2023-08-31 02:43:43,304 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:43:43,304 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:43:43,305 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 296 [2023-08-31 02:43:43,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:43:43,550 INFO L130 PetriNetUnfolder]: 1632/2232 cut-off events. [2023-08-31 02:43:43,550 INFO L131 PetriNetUnfolder]: For 545/694 co-relation queries the response was YES. [2023-08-31 02:43:43,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5578 conditions, 2232 events. 1632/2232 cut-off events. For 545/694 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 8389 event pairs, 977 based on Foata normal form. 149/1982 useless extension candidates. Maximal degree in co-relation 1672. Up to 1790 conditions per place. [2023-08-31 02:43:43,562 INFO L137 encePairwiseOnDemand]: 292/296 looper letters, 46 selfloop transitions, 3 changer transitions 0/50 dead transitions. [2023-08-31 02:43:43,563 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 50 transitions, 240 flow [2023-08-31 02:43:43,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 02:43:43,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 02:43:43,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 586 transitions. [2023-08-31 02:43:43,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49493243243243246 [2023-08-31 02:43:43,565 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 586 transitions. [2023-08-31 02:43:43,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 586 transitions. [2023-08-31 02:43:43,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:43:43,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 586 transitions. [2023-08-31 02:43:43,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 146.5) internal successors, (586), 4 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:43:43,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 296.0) internal successors, (1480), 5 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:43:43,571 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 296.0) internal successors, (1480), 5 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:43:43,571 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 92 flow. Second operand 4 states and 586 transitions. [2023-08-31 02:43:43,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 50 transitions, 240 flow [2023-08-31 02:43:43,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 50 transitions, 231 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-31 02:43:43,575 INFO L231 Difference]: Finished difference. Result has 40 places, 34 transitions, 100 flow [2023-08-31 02:43:43,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=100, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2023-08-31 02:43:43,577 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 0 predicate places. [2023-08-31 02:43:43,579 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 100 flow [2023-08-31 02:43:43,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:43:43,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:43:43,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 02:43:43,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 02:43:43,581 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-31 02:43:43,582 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:43:43,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1347991008, now seen corresponding path program 1 times [2023-08-31 02:43:43,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:43:43,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959023448] [2023-08-31 02:43:43,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:43:43,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:43:43,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:43:43,751 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 02:43:43,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:43:43,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959023448] [2023-08-31 02:43:43,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959023448] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 02:43:43,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 02:43:43,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 02:43:43,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123718392] [2023-08-31 02:43:43,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 02:43:43,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 02:43:43,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:43:43,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 02:43:43,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 02:43:43,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 296 [2023-08-31 02:43:43,788 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:43:43,788 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:43:43,788 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 296 [2023-08-31 02:43:43,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:43:44,021 INFO L130 PetriNetUnfolder]: 1632/2233 cut-off events. [2023-08-31 02:43:44,021 INFO L131 PetriNetUnfolder]: For 878/1027 co-relation queries the response was YES. [2023-08-31 02:43:44,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5793 conditions, 2233 events. 1632/2233 cut-off events. For 878/1027 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 8188 event pairs, 1243 based on Foata normal form. 149/1978 useless extension candidates. Maximal degree in co-relation 1883. Up to 2223 conditions per place. [2023-08-31 02:43:44,034 INFO L137 encePairwiseOnDemand]: 293/296 looper letters, 32 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2023-08-31 02:43:44,036 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 35 transitions, 170 flow [2023-08-31 02:43:44,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 02:43:44,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 02:43:44,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 434 transitions. [2023-08-31 02:43:44,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48873873873873874 [2023-08-31 02:43:44,038 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 434 transitions. [2023-08-31 02:43:44,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 434 transitions. [2023-08-31 02:43:44,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:43:44,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 434 transitions. [2023-08-31 02:43:44,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:43:44,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 296.0) internal successors, (1184), 4 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:43:44,043 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 296.0) internal successors, (1184), 4 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:43:44,044 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 100 flow. Second operand 3 states and 434 transitions. [2023-08-31 02:43:44,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 35 transitions, 170 flow [2023-08-31 02:43:44,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 35 transitions, 164 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-31 02:43:44,048 INFO L231 Difference]: Finished difference. Result has 41 places, 35 transitions, 106 flow [2023-08-31 02:43:44,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=41, PETRI_TRANSITIONS=35} [2023-08-31 02:43:44,050 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2023-08-31 02:43:44,050 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 106 flow [2023-08-31 02:43:44,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:43:44,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:43:44,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 02:43:44,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 02:43:44,051 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-31 02:43:44,052 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:43:44,052 INFO L85 PathProgramCache]: Analyzing trace with hash -406219004, now seen corresponding path program 1 times [2023-08-31 02:43:44,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:43:44,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639574167] [2023-08-31 02:43:44,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:43:44,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:43:44,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:43:44,855 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 02:43:44,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:43:44,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639574167] [2023-08-31 02:43:44,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639574167] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 02:43:44,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025759028] [2023-08-31 02:43:44,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:43:44,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 02:43:44,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 02:43:44,859 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 02:43:44,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-31 02:43:44,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:43:44,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 49 conjunts are in the unsatisfiable core [2023-08-31 02:43:44,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 02:43:45,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-31 02:43:45,198 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-31 02:43:45,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 02:43:45,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-31 02:43:45,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 02:43:45,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-31 02:43:45,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2023-08-31 02:43:45,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 02:43:45,586 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-31 02:43:45,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 27 [2023-08-31 02:43:45,706 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 02:43:45,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 02:43:50,464 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (select |c_#memory_int| c_~A~0.base))) (let ((.cse0 (select .cse2 c_~A~0.offset))) (or (<= 2147483647 .cse0) (forall ((v_ArrVal_186 Int) (v_ArrVal_188 (Array Int Int))) (let ((.cse1 (select (select (store (store |c_#memory_int| c_~A~0.base (store .cse2 c_~A~0.offset v_ArrVal_186)) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_188) c_~A~0.base) c_~A~0.offset))) (or (< v_ArrVal_186 (+ .cse0 1)) (<= 2147483647 .cse1) (<= c_~min~0 (+ .cse1 1)))))))) is different from false [2023-08-31 02:43:50,487 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_186 Int) (v_ArrVal_185 (Array Int Int)) (v_ArrVal_188 (Array Int Int))) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_185))) (let ((.cse3 (select .cse2 c_~A~0.base))) (let ((.cse0 (select .cse3 c_~A~0.offset)) (.cse1 (select (select (store (store .cse2 c_~A~0.base (store .cse3 c_~A~0.offset v_ArrVal_186)) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_188) c_~A~0.base) c_~A~0.offset))) (or (< v_ArrVal_186 (+ .cse0 1)) (<= 2147483647 .cse0) (<= c_~min~0 (+ .cse1 1)) (<= 2147483647 .cse1)))))) is different from false [2023-08-31 02:43:51,012 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_184 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_184))) (or (<= (select (select .cse0 c_~A~0.base) c_~A~0.offset) c_~min~0) (forall ((v_ArrVal_186 Int) (v_ArrVal_185 (Array Int Int)) (v_ArrVal_188 (Array Int Int))) (let ((.cse4 (store .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_185))) (let ((.cse3 (select .cse4 c_~A~0.base))) (let ((.cse2 (select (select (store (store .cse4 c_~A~0.base (store .cse3 c_~A~0.offset v_ArrVal_186)) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_188) c_~A~0.base) c_~A~0.offset)) (.cse1 (select .cse3 c_~A~0.offset))) (or (< v_ArrVal_186 (+ .cse1 1)) (<= 2147483647 .cse2) (<= c_~min~0 (+ .cse2 1)) (<= 2147483647 .cse1))))))))) (forall ((v_ArrVal_184 (Array Int Int))) (let ((.cse10 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_184))) (let ((.cse5 (select (select .cse10 c_~A~0.base) c_~A~0.offset))) (or (< c_~min~0 .cse5) (forall ((v_ArrVal_186 Int) (v_ArrVal_185 (Array Int Int)) (v_ArrVal_188 (Array Int Int))) (let ((.cse9 (store .cse10 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_185))) (let ((.cse8 (select .cse9 c_~A~0.base))) (let ((.cse7 (select (select (store (store .cse9 c_~A~0.base (store .cse8 c_~A~0.offset v_ArrVal_186)) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_188) c_~A~0.base) c_~A~0.offset)) (.cse6 (select .cse8 c_~A~0.offset))) (or (< v_ArrVal_186 (+ .cse6 1)) (<= 2147483647 .cse7) (<= .cse5 (+ .cse7 1)) (<= 2147483647 .cse6))))))))))) is different from false [2023-08-31 02:43:51,103 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse6 (select (select |c_#memory_int| c_~A~0.base) c_~A~0.offset))) (and (forall ((v_ArrVal_184 (Array Int Int))) (let ((.cse5 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_184))) (let ((.cse2 (select (select .cse5 c_~A~0.base) c_~A~0.offset))) (or (forall ((v_ArrVal_186 Int) (v_ArrVal_185 (Array Int Int)) (v_ArrVal_188 (Array Int Int))) (let ((.cse4 (store .cse5 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_185))) (let ((.cse3 (select .cse4 c_~A~0.base))) (let ((.cse1 (select (select (store (store .cse4 c_~A~0.base (store .cse3 c_~A~0.offset v_ArrVal_186)) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_188) c_~A~0.base) c_~A~0.offset)) (.cse0 (select .cse3 c_~A~0.offset))) (or (< v_ArrVal_186 (+ .cse0 1)) (<= 2147483647 .cse1) (<= .cse2 (+ .cse1 1)) (<= 2147483647 .cse0)))))) (< .cse6 .cse2))))) (forall ((v_ArrVal_184 (Array Int Int))) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_184))) (or (<= (select (select .cse7 c_~A~0.base) c_~A~0.offset) .cse6) (forall ((v_ArrVal_186 Int) (v_ArrVal_185 (Array Int Int)) (v_ArrVal_188 (Array Int Int))) (let ((.cse11 (store .cse7 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_185))) (let ((.cse10 (select .cse11 c_~A~0.base))) (let ((.cse9 (select (select (store (store .cse11 c_~A~0.base (store .cse10 c_~A~0.offset v_ArrVal_186)) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_188) c_~A~0.base) c_~A~0.offset)) (.cse8 (select .cse10 c_~A~0.offset))) (or (< v_ArrVal_186 (+ .cse8 1)) (<= .cse6 (+ .cse9 1)) (<= 2147483647 .cse9) (<= 2147483647 .cse8))))))))))) is different from false [2023-08-31 02:43:51,280 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_184 (Array Int Int)) (v_ArrVal_183 (Array Int Int))) (let ((.cse6 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_183))) (let ((.cse1 (select (select .cse6 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse0 (store .cse6 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_184))) (or (<= (select (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) .cse1) (forall ((v_ArrVal_186 Int) (v_ArrVal_185 (Array Int Int)) (v_ArrVal_188 (Array Int Int))) (let ((.cse4 (store .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_185))) (let ((.cse5 (select .cse4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse2 (select .cse5 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse3 (select (select (store (store .cse4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| (store .cse5 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| v_ArrVal_186)) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_188) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< v_ArrVal_186 (+ .cse2 1)) (<= 2147483647 .cse3) (<= 2147483647 .cse2) (<= .cse1 (+ .cse3 1))))))))))) (forall ((v_ArrVal_184 (Array Int Int)) (v_ArrVal_183 (Array Int Int))) (let ((.cse13 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_183))) (let ((.cse12 (store .cse13 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_184))) (let ((.cse9 (select (select .cse12 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (forall ((v_ArrVal_186 Int) (v_ArrVal_185 (Array Int Int)) (v_ArrVal_188 (Array Int Int))) (let ((.cse10 (store .cse12 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_185))) (let ((.cse11 (select .cse10 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse7 (select .cse11 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse8 (select (select (store (store .cse10 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| (store .cse11 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| v_ArrVal_186)) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_188) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< v_ArrVal_186 (+ .cse7 1)) (<= 2147483647 .cse8) (<= 2147483647 .cse7) (<= .cse9 (+ .cse8 1))))))) (< (select (select .cse13 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) .cse9))))))) is different from false [2023-08-31 02:43:51,337 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 02:43:51,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 247 treesize of output 151 [2023-08-31 02:43:51,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6735 treesize of output 6431 [2023-08-31 02:43:51,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 411 treesize of output 383 [2023-08-31 02:43:51,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 467 treesize of output 435 [2023-08-31 02:43:51,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 356 treesize of output 342 [2023-08-31 02:43:51,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 101 [2023-08-31 02:43:52,802 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-31 02:43:52,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 244 treesize of output 1 [2023-08-31 02:43:52,831 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-31 02:43:52,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025759028] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 02:43:52,832 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 02:43:52,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14, 15] total 38 [2023-08-31 02:43:52,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839044833] [2023-08-31 02:43:52,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 02:43:52,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-08-31 02:43:52,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:43:52,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-08-31 02:43:52,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1004, Unknown=30, NotChecked=350, Total=1560 [2023-08-31 02:43:52,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 296 [2023-08-31 02:43:52,851 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 106 flow. Second operand has 40 states, 40 states have (on average 84.325) internal successors, (3373), 40 states have internal predecessors, (3373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:43:52,851 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:43:52,852 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 296 [2023-08-31 02:43:52,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:44:00,017 INFO L130 PetriNetUnfolder]: 11330/15592 cut-off events. [2023-08-31 02:44:00,018 INFO L131 PetriNetUnfolder]: For 4161/4161 co-relation queries the response was YES. [2023-08-31 02:44:00,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40013 conditions, 15592 events. 11330/15592 cut-off events. For 4161/4161 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 80468 event pairs, 163 based on Foata normal form. 7/12538 useless extension candidates. Maximal degree in co-relation 39999. Up to 3235 conditions per place. [2023-08-31 02:44:00,088 INFO L137 encePairwiseOnDemand]: 284/296 looper letters, 250 selfloop transitions, 67 changer transitions 314/631 dead transitions. [2023-08-31 02:44:00,088 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 631 transitions, 3144 flow [2023-08-31 02:44:00,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-08-31 02:44:00,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2023-08-31 02:44:00,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 4272 transitions. [2023-08-31 02:44:00,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3207207207207207 [2023-08-31 02:44:00,101 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 4272 transitions. [2023-08-31 02:44:00,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 4272 transitions. [2023-08-31 02:44:00,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:44:00,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 4272 transitions. [2023-08-31 02:44:00,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 94.93333333333334) internal successors, (4272), 45 states have internal predecessors, (4272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:44:00,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 296.0) internal successors, (13616), 46 states have internal predecessors, (13616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:44:00,137 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 296.0) internal successors, (13616), 46 states have internal predecessors, (13616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:44:00,138 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 106 flow. Second operand 45 states and 4272 transitions. [2023-08-31 02:44:00,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 631 transitions, 3144 flow [2023-08-31 02:44:00,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 631 transitions, 3140 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-31 02:44:00,263 INFO L231 Difference]: Finished difference. Result has 115 places, 123 transitions, 762 flow [2023-08-31 02:44:00,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=762, PETRI_PLACES=115, PETRI_TRANSITIONS=123} [2023-08-31 02:44:00,266 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 75 predicate places. [2023-08-31 02:44:00,266 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 123 transitions, 762 flow [2023-08-31 02:44:00,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 84.325) internal successors, (3373), 40 states have internal predecessors, (3373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:44:00,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:44:00,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 02:44:00,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-31 02:44:00,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 02:44:00,476 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-31 02:44:00,477 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:44:00,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1897529506, now seen corresponding path program 2 times [2023-08-31 02:44:00,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:44:00,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377854942] [2023-08-31 02:44:00,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:44:00,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:44:00,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:44:00,792 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-31 02:44:00,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:44:00,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377854942] [2023-08-31 02:44:00,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377854942] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 02:44:00,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 02:44:00,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 02:44:00,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40464750] [2023-08-31 02:44:00,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 02:44:00,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 02:44:00,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:44:00,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 02:44:00,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 02:44:00,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 296 [2023-08-31 02:44:00,810 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 123 transitions, 762 flow. Second operand has 4 states, 4 states have (on average 143.5) internal successors, (574), 4 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:44:00,810 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:44:00,810 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 296 [2023-08-31 02:44:00,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:44:02,228 INFO L130 PetriNetUnfolder]: 8032/11272 cut-off events. [2023-08-31 02:44:02,228 INFO L131 PetriNetUnfolder]: For 93814/95153 co-relation queries the response was YES. [2023-08-31 02:44:02,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48287 conditions, 11272 events. 8032/11272 cut-off events. For 93814/95153 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 58739 event pairs, 1242 based on Foata normal form. 1109/11520 useless extension candidates. Maximal degree in co-relation 48236. Up to 6597 conditions per place. [2023-08-31 02:44:02,317 INFO L137 encePairwiseOnDemand]: 292/296 looper letters, 95 selfloop transitions, 5 changer transitions 208/309 dead transitions. [2023-08-31 02:44:02,317 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 309 transitions, 2548 flow [2023-08-31 02:44:02,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 02:44:02,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 02:44:02,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 752 transitions. [2023-08-31 02:44:02,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5081081081081081 [2023-08-31 02:44:02,320 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 752 transitions. [2023-08-31 02:44:02,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 752 transitions. [2023-08-31 02:44:02,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:44:02,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 752 transitions. [2023-08-31 02:44:02,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 150.4) internal successors, (752), 5 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:44:02,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 296.0) internal successors, (1776), 6 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:44:02,325 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 296.0) internal successors, (1776), 6 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:44:02,325 INFO L175 Difference]: Start difference. First operand has 115 places, 123 transitions, 762 flow. Second operand 5 states and 752 transitions. [2023-08-31 02:44:02,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 309 transitions, 2548 flow [2023-08-31 02:44:02,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 309 transitions, 2475 flow, removed 35 selfloop flow, removed 14 redundant places. [2023-08-31 02:44:02,578 INFO L231 Difference]: Finished difference. Result has 86 places, 77 transitions, 446 flow [2023-08-31 02:44:02,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=725, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=446, PETRI_PLACES=86, PETRI_TRANSITIONS=77} [2023-08-31 02:44:02,581 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 46 predicate places. [2023-08-31 02:44:02,583 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 77 transitions, 446 flow [2023-08-31 02:44:02,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 143.5) internal successors, (574), 4 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:44:02,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:44:02,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 02:44:02,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 02:44:02,584 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-31 02:44:02,584 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:44:02,585 INFO L85 PathProgramCache]: Analyzing trace with hash 701964876, now seen corresponding path program 3 times [2023-08-31 02:44:02,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:44:02,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83830178] [2023-08-31 02:44:02,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:44:02,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:44:02,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:44:03,010 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 02:44:03,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:44:03,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83830178] [2023-08-31 02:44:03,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83830178] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 02:44:03,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144975960] [2023-08-31 02:44:03,010 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-31 02:44:03,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 02:44:03,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 02:44:03,012 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 02:44:03,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-31 02:44:03,277 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-31 02:44:03,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 02:44:03,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-31 02:44:03,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 02:44:03,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-31 02:44:03,364 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-08-31 02:44:03,398 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 02:44:03,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 02:44:03,653 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 02:44:03,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144975960] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 02:44:03,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-31 02:44:03,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 7] total 16 [2023-08-31 02:44:03,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226282016] [2023-08-31 02:44:03,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 02:44:03,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 02:44:03,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:44:03,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 02:44:03,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2023-08-31 02:44:03,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 296 [2023-08-31 02:44:03,731 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 77 transitions, 446 flow. Second operand has 7 states, 7 states have (on average 131.28571428571428) internal successors, (919), 7 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:44:03,731 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:44:03,731 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 296 [2023-08-31 02:44:03,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:44:05,507 INFO L130 PetriNetUnfolder]: 9804/13754 cut-off events. [2023-08-31 02:44:05,507 INFO L131 PetriNetUnfolder]: For 135224/137230 co-relation queries the response was YES. [2023-08-31 02:44:05,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60048 conditions, 13754 events. 9804/13754 cut-off events. For 135224/137230 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 74070 event pairs, 1623 based on Foata normal form. 1582/14080 useless extension candidates. Maximal degree in co-relation 60007. Up to 4717 conditions per place. [2023-08-31 02:44:05,601 INFO L137 encePairwiseOnDemand]: 288/296 looper letters, 124 selfloop transitions, 13 changer transitions 170/308 dead transitions. [2023-08-31 02:44:05,601 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 308 transitions, 2376 flow [2023-08-31 02:44:05,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 02:44:05,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 02:44:05,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1006 transitions. [2023-08-31 02:44:05,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4855212355212355 [2023-08-31 02:44:05,605 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1006 transitions. [2023-08-31 02:44:05,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1006 transitions. [2023-08-31 02:44:05,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:44:05,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1006 transitions. [2023-08-31 02:44:05,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 143.71428571428572) internal successors, (1006), 7 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:44:05,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 296.0) internal successors, (2368), 8 states have internal predecessors, (2368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:44:05,612 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 296.0) internal successors, (2368), 8 states have internal predecessors, (2368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:44:05,613 INFO L175 Difference]: Start difference. First operand has 86 places, 77 transitions, 446 flow. Second operand 7 states and 1006 transitions. [2023-08-31 02:44:05,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 308 transitions, 2376 flow [2023-08-31 02:44:05,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 308 transitions, 2233 flow, removed 57 selfloop flow, removed 15 redundant places. [2023-08-31 02:44:05,808 INFO L231 Difference]: Finished difference. Result has 70 places, 88 transitions, 595 flow [2023-08-31 02:44:05,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=595, PETRI_PLACES=70, PETRI_TRANSITIONS=88} [2023-08-31 02:44:05,809 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 30 predicate places. [2023-08-31 02:44:05,809 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 88 transitions, 595 flow [2023-08-31 02:44:05,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 131.28571428571428) internal successors, (919), 7 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:44:05,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:44:05,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 02:44:05,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-31 02:44:06,016 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,SelfDestructingSolverStorable6 [2023-08-31 02:44:06,017 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-31 02:44:06,017 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:44:06,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1896766330, now seen corresponding path program 4 times [2023-08-31 02:44:06,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:44:06,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850582544] [2023-08-31 02:44:06,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:44:06,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:44:06,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:44:06,354 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-31 02:44:06,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:44:06,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850582544] [2023-08-31 02:44:06,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850582544] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 02:44:06,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 02:44:06,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 02:44:06,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512633853] [2023-08-31 02:44:06,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 02:44:06,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 02:44:06,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:44:06,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 02:44:06,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 02:44:06,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 296 [2023-08-31 02:44:06,365 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 88 transitions, 595 flow. Second operand has 4 states, 4 states have (on average 143.5) internal successors, (574), 4 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:44:06,366 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:44:06,366 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 296 [2023-08-31 02:44:06,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:44:07,182 INFO L130 PetriNetUnfolder]: 6863/9780 cut-off events. [2023-08-31 02:44:07,183 INFO L131 PetriNetUnfolder]: For 31304/32506 co-relation queries the response was YES. [2023-08-31 02:44:07,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38446 conditions, 9780 events. 6863/9780 cut-off events. For 31304/32506 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 50432 event pairs, 996 based on Foata normal form. 1198/10100 useless extension candidates. Maximal degree in co-relation 38412. Up to 6365 conditions per place. [2023-08-31 02:44:07,238 INFO L137 encePairwiseOnDemand]: 292/296 looper letters, 92 selfloop transitions, 4 changer transitions 100/197 dead transitions. [2023-08-31 02:44:07,238 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 197 transitions, 1789 flow [2023-08-31 02:44:07,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 02:44:07,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 02:44:07,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 742 transitions. [2023-08-31 02:44:07,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5013513513513513 [2023-08-31 02:44:07,241 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 742 transitions. [2023-08-31 02:44:07,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 742 transitions. [2023-08-31 02:44:07,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:44:07,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 742 transitions. [2023-08-31 02:44:07,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 148.4) internal successors, (742), 5 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:44:07,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 296.0) internal successors, (1776), 6 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:44:07,246 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 296.0) internal successors, (1776), 6 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:44:07,246 INFO L175 Difference]: Start difference. First operand has 70 places, 88 transitions, 595 flow. Second operand 5 states and 742 transitions. [2023-08-31 02:44:07,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 197 transitions, 1789 flow [2023-08-31 02:44:07,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 197 transitions, 1684 flow, removed 40 selfloop flow, removed 3 redundant places. [2023-08-31 02:44:07,404 INFO L231 Difference]: Finished difference. Result has 71 places, 80 transitions, 494 flow [2023-08-31 02:44:07,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=550, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=494, PETRI_PLACES=71, PETRI_TRANSITIONS=80} [2023-08-31 02:44:07,408 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 31 predicate places. [2023-08-31 02:44:07,409 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 80 transitions, 494 flow [2023-08-31 02:44:07,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 143.5) internal successors, (574), 4 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:44:07,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:44:07,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 02:44:07,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 02:44:07,410 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-31 02:44:07,411 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:44:07,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1508571068, now seen corresponding path program 5 times [2023-08-31 02:44:07,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:44:07,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622636703] [2023-08-31 02:44:07,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:44:07,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:44:07,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:44:08,103 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 02:44:08,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:44:08,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622636703] [2023-08-31 02:44:08,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622636703] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 02:44:08,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024355424] [2023-08-31 02:44:08,104 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-31 02:44:08,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 02:44:08,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 02:44:08,109 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 02:44:08,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-31 02:44:08,234 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-31 02:44:08,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 02:44:08,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-31 02:44:08,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 02:44:08,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-08-31 02:44:08,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 02:44:08,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-31 02:44:08,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-08-31 02:44:08,526 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 02:44:08,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 02:44:08,911 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (+ c_~A~0.offset (* 4 c_thread2Thread1of1ForFork3_~i~1)))) (and (or (<= 2147483647 c_~max~0) (forall ((v_ArrVal_385 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_385) c_~A~0.base))) (or (<= (select .cse0 c_~A~0.offset) (+ c_~max~0 1)) (<= c_~max~0 (select .cse0 .cse1)))))) (forall ((v_ArrVal_385 (Array Int Int))) (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_385) c_~A~0.base))) (let ((.cse3 (select .cse2 .cse1))) (or (<= (select .cse2 c_~A~0.offset) (+ .cse3 1)) (<= 2147483647 .cse3) (< .cse3 c_~max~0))))))) is different from false [2023-08-31 02:44:08,915 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 02:44:08,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024355424] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 02:44:08,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 02:44:08,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 8] total 28 [2023-08-31 02:44:08,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257238523] [2023-08-31 02:44:08,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 02:44:08,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-31 02:44:08,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:44:08,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-31 02:44:08,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=634, Unknown=1, NotChecked=52, Total=812 [2023-08-31 02:44:09,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 296 [2023-08-31 02:44:09,018 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 80 transitions, 494 flow. Second operand has 29 states, 29 states have (on average 103.20689655172414) internal successors, (2993), 29 states have internal predecessors, (2993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:44:09,018 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:44:09,018 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 296 [2023-08-31 02:44:09,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:44:16,946 INFO L130 PetriNetUnfolder]: 30257/41817 cut-off events. [2023-08-31 02:44:16,946 INFO L131 PetriNetUnfolder]: For 162503/162503 co-relation queries the response was YES. [2023-08-31 02:44:17,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169293 conditions, 41817 events. 30257/41817 cut-off events. For 162503/162503 co-relation queries the response was YES. Maximal size of possible extension queue 1405. Compared 246153 event pairs, 2351 based on Foata normal form. 28/38545 useless extension candidates. Maximal degree in co-relation 169258. Up to 10235 conditions per place. [2023-08-31 02:44:17,213 INFO L137 encePairwiseOnDemand]: 276/296 looper letters, 399 selfloop transitions, 197 changer transitions 1048/1644 dead transitions. [2023-08-31 02:44:17,213 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 1644 transitions, 12718 flow [2023-08-31 02:44:17,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2023-08-31 02:44:17,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2023-08-31 02:44:17,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 9280 transitions. [2023-08-31 02:44:17,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3823335530652604 [2023-08-31 02:44:17,230 INFO L72 ComplementDD]: Start complementDD. Operand 82 states and 9280 transitions. [2023-08-31 02:44:17,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 82 states and 9280 transitions. [2023-08-31 02:44:17,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:44:17,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 82 states and 9280 transitions. [2023-08-31 02:44:17,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 83 states, 82 states have (on average 113.17073170731707) internal successors, (9280), 82 states have internal predecessors, (9280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:44:17,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 83 states, 83 states have (on average 296.0) internal successors, (24568), 83 states have internal predecessors, (24568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:44:17,304 INFO L81 ComplementDD]: Finished complementDD. Result has 83 states, 83 states have (on average 296.0) internal successors, (24568), 83 states have internal predecessors, (24568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:44:17,304 INFO L175 Difference]: Start difference. First operand has 71 places, 80 transitions, 494 flow. Second operand 82 states and 9280 transitions. [2023-08-31 02:44:17,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 1644 transitions, 12718 flow [2023-08-31 02:44:18,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 1644 transitions, 12256 flow, removed 172 selfloop flow, removed 5 redundant places. [2023-08-31 02:44:18,455 INFO L231 Difference]: Finished difference. Result has 211 places, 278 transitions, 3003 flow [2023-08-31 02:44:18,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=82, PETRI_FLOW=3003, PETRI_PLACES=211, PETRI_TRANSITIONS=278} [2023-08-31 02:44:18,456 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 171 predicate places. [2023-08-31 02:44:18,456 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 278 transitions, 3003 flow [2023-08-31 02:44:18,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 103.20689655172414) internal successors, (2993), 29 states have internal predecessors, (2993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:44:18,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:44:18,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 02:44:18,467 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-31 02:44:18,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 02:44:18,667 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-31 02:44:18,667 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:44:18,668 INFO L85 PathProgramCache]: Analyzing trace with hash 957774916, now seen corresponding path program 6 times [2023-08-31 02:44:18,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:44:18,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221414374] [2023-08-31 02:44:18,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:44:18,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:44:18,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:44:19,182 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 02:44:19,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:44:19,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221414374] [2023-08-31 02:44:19,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221414374] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 02:44:19,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715635232] [2023-08-31 02:44:19,183 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-31 02:44:19,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 02:44:19,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 02:44:19,185 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 02:44:19,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-31 02:44:19,544 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-31 02:44:19,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 02:44:19,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 33 conjunts are in the unsatisfiable core [2023-08-31 02:44:19,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 02:44:19,638 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-08-31 02:44:19,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-08-31 02:44:19,732 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 02:44:19,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 02:44:20,114 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 02:44:20,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715635232] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 02:44:20,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 02:44:20,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 8] total 22 [2023-08-31 02:44:20,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109641116] [2023-08-31 02:44:20,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 02:44:20,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-31 02:44:20,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:44:20,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-31 02:44:20,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2023-08-31 02:44:20,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 296 [2023-08-31 02:44:20,626 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 278 transitions, 3003 flow. Second operand has 23 states, 23 states have (on average 124.43478260869566) internal successors, (2862), 23 states have internal predecessors, (2862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:44:20,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:44:20,627 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 296 [2023-08-31 02:44:20,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:44:34,627 INFO L130 PetriNetUnfolder]: 42315/59435 cut-off events. [2023-08-31 02:44:34,628 INFO L131 PetriNetUnfolder]: For 3868427/3868427 co-relation queries the response was YES. [2023-08-31 02:44:35,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 589763 conditions, 59435 events. 42315/59435 cut-off events. For 3868427/3868427 co-relation queries the response was YES. Maximal size of possible extension queue 2091. Compared 379928 event pairs, 6505 based on Foata normal form. 33/59467 useless extension candidates. Maximal degree in co-relation 589664. Up to 27235 conditions per place. [2023-08-31 02:44:36,020 INFO L137 encePairwiseOnDemand]: 282/296 looper letters, 576 selfloop transitions, 338 changer transitions 726/1640 dead transitions. [2023-08-31 02:44:36,020 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 1640 transitions, 25449 flow [2023-08-31 02:44:36,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-08-31 02:44:36,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2023-08-31 02:44:36,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 8695 transitions. [2023-08-31 02:44:36,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4519230769230769 [2023-08-31 02:44:36,034 INFO L72 ComplementDD]: Start complementDD. Operand 65 states and 8695 transitions. [2023-08-31 02:44:36,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 65 states and 8695 transitions. [2023-08-31 02:44:36,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:44:36,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 65 states and 8695 transitions. [2023-08-31 02:44:36,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 66 states, 65 states have (on average 133.76923076923077) internal successors, (8695), 65 states have internal predecessors, (8695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:44:36,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 66 states, 66 states have (on average 296.0) internal successors, (19536), 66 states have internal predecessors, (19536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:44:36,075 INFO L81 ComplementDD]: Finished complementDD. Result has 66 states, 66 states have (on average 296.0) internal successors, (19536), 66 states have internal predecessors, (19536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:44:36,076 INFO L175 Difference]: Start difference. First operand has 211 places, 278 transitions, 3003 flow. Second operand 65 states and 8695 transitions. [2023-08-31 02:44:36,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 1640 transitions, 25449 flow [2023-08-31 02:44:48,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 1640 transitions, 19519 flow, removed 2963 selfloop flow, removed 44 redundant places. [2023-08-31 02:44:48,510 INFO L231 Difference]: Finished difference. Result has 225 places, 558 transitions, 7232 flow [2023-08-31 02:44:48,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=2636, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=65, PETRI_FLOW=7232, PETRI_PLACES=225, PETRI_TRANSITIONS=558} [2023-08-31 02:44:48,510 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 185 predicate places. [2023-08-31 02:44:48,510 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 558 transitions, 7232 flow [2023-08-31 02:44:48,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 124.43478260869566) internal successors, (2862), 23 states have internal predecessors, (2862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:44:48,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:44:48,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 02:44:48,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-31 02:44:48,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 02:44:48,712 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-31 02:44:48,712 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:44:48,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1014827836, now seen corresponding path program 7 times [2023-08-31 02:44:48,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:44:48,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416618916] [2023-08-31 02:44:48,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:44:48,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:44:48,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:44:49,150 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 02:44:49,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:44:49,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416618916] [2023-08-31 02:44:49,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416618916] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 02:44:49,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297395483] [2023-08-31 02:44:49,151 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-31 02:44:49,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 02:44:49,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 02:44:49,153 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 02:44:49,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-31 02:44:49,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:44:49,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 33 conjunts are in the unsatisfiable core [2023-08-31 02:44:49,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 02:44:49,384 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2023-08-31 02:44:49,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-08-31 02:44:49,500 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 02:44:49,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 02:44:49,828 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 02:44:49,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297395483] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 02:44:49,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 02:44:49,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 9] total 25 [2023-08-31 02:44:49,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305181708] [2023-08-31 02:44:49,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 02:44:49,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-31 02:44:49,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:44:49,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-31 02:44:49,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650 [2023-08-31 02:44:50,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 296 [2023-08-31 02:44:50,447 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 558 transitions, 7232 flow. Second operand has 26 states, 26 states have (on average 124.15384615384616) internal successors, (3228), 26 states have internal predecessors, (3228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:44:50,447 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:44:50,447 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 296 [2023-08-31 02:44:50,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:45:11,905 INFO L130 PetriNetUnfolder]: 64763/91287 cut-off events. [2023-08-31 02:45:11,905 INFO L131 PetriNetUnfolder]: For 3687733/3687733 co-relation queries the response was YES. [2023-08-31 02:45:13,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 750693 conditions, 91287 events. 64763/91287 cut-off events. For 3687733/3687733 co-relation queries the response was YES. Maximal size of possible extension queue 3314. Compared 620871 event pairs, 12176 based on Foata normal form. 100/91386 useless extension candidates. Maximal degree in co-relation 750588. Up to 41253 conditions per place. [2023-08-31 02:45:13,614 INFO L137 encePairwiseOnDemand]: 283/296 looper letters, 560 selfloop transitions, 393 changer transitions 1199/2152 dead transitions. [2023-08-31 02:45:13,614 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 2152 transitions, 32384 flow [2023-08-31 02:45:13,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-08-31 02:45:13,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2023-08-31 02:45:13,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 8934 transitions. [2023-08-31 02:45:13,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45048406615570796 [2023-08-31 02:45:13,626 INFO L72 ComplementDD]: Start complementDD. Operand 67 states and 8934 transitions. [2023-08-31 02:45:13,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 67 states and 8934 transitions. [2023-08-31 02:45:13,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:45:13,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 67 states and 8934 transitions. [2023-08-31 02:45:13,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 68 states, 67 states have (on average 133.34328358208955) internal successors, (8934), 67 states have internal predecessors, (8934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:45:13,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 68 states, 68 states have (on average 296.0) internal successors, (20128), 68 states have internal predecessors, (20128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:45:13,658 INFO L81 ComplementDD]: Finished complementDD. Result has 68 states, 68 states have (on average 296.0) internal successors, (20128), 68 states have internal predecessors, (20128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:45:13,658 INFO L175 Difference]: Start difference. First operand has 225 places, 558 transitions, 7232 flow. Second operand 67 states and 8934 transitions. [2023-08-31 02:45:13,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 2152 transitions, 32384 flow [2023-08-31 02:45:48,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 2152 transitions, 30599 flow, removed 822 selfloop flow, removed 24 redundant places. [2023-08-31 02:45:48,669 INFO L231 Difference]: Finished difference. Result has 290 places, 730 transitions, 10728 flow [2023-08-31 02:45:48,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=6769, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=250, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=67, PETRI_FLOW=10728, PETRI_PLACES=290, PETRI_TRANSITIONS=730} [2023-08-31 02:45:48,670 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 250 predicate places. [2023-08-31 02:45:48,671 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 730 transitions, 10728 flow [2023-08-31 02:45:48,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 124.15384615384616) internal successors, (3228), 26 states have internal predecessors, (3228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:45:48,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:45:48,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 02:45:48,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-31 02:45:48,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-31 02:45:48,878 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-31 02:45:48,878 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:45:48,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1029139722, now seen corresponding path program 8 times [2023-08-31 02:45:48,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:45:48,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916879592] [2023-08-31 02:45:48,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:45:48,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:45:48,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:45:49,607 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 02:45:49,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:45:49,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916879592] [2023-08-31 02:45:49,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916879592] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 02:45:49,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560602517] [2023-08-31 02:45:49,608 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 02:45:49,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 02:45:49,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 02:45:49,613 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) [2023-08-31 02:45:49,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-31 02:45:49,944 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-31 02:45:49,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 02:45:49,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-31 02:45:49,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 02:45:50,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 02:45:50,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-31 02:45:50,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2023-08-31 02:45:50,209 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-08-31 02:45:50,255 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 02:45:50,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 02:45:50,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 33 [2023-08-31 02:45:50,769 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-08-31 02:45:56,836 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 02:45:56,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560602517] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 02:45:56,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 02:45:56,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 35 [2023-08-31 02:45:56,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889704440] [2023-08-31 02:45:56,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 02:45:56,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-08-31 02:45:56,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:45:56,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-08-31 02:45:56,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1102, Unknown=15, NotChecked=0, Total=1332 [2023-08-31 02:45:58,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 02:46:01,061 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 02:46:03,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 02:46:05,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 02:46:07,486 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 02:46:09,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 02:46:11,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 02:46:13,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 02:46:15,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 02:46:15,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 296 [2023-08-31 02:46:15,988 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 730 transitions, 10728 flow. Second operand has 37 states, 37 states have (on average 98.51351351351352) internal successors, (3645), 37 states have internal predecessors, (3645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:46:15,988 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:46:15,988 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 296 [2023-08-31 02:46:15,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:46:49,863 INFO L130 PetriNetUnfolder]: 65139/92052 cut-off events. [2023-08-31 02:46:49,863 INFO L131 PetriNetUnfolder]: For 9333437/9333437 co-relation queries the response was YES. [2023-08-31 02:46:51,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 979423 conditions, 92052 events. 65139/92052 cut-off events. For 9333437/9333437 co-relation queries the response was YES. Maximal size of possible extension queue 3151. Compared 627831 event pairs, 9033 based on Foata normal form. 91/92142 useless extension candidates. Maximal degree in co-relation 979285. Up to 41347 conditions per place. [2023-08-31 02:46:52,224 INFO L137 encePairwiseOnDemand]: 283/296 looper letters, 526 selfloop transitions, 553 changer transitions 1413/2492 dead transitions. [2023-08-31 02:46:52,225 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 2492 transitions, 44660 flow [2023-08-31 02:46:52,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2023-08-31 02:46:52,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2023-08-31 02:46:52,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 10140 transitions. [2023-08-31 02:46:52,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36059743954480794 [2023-08-31 02:46:52,238 INFO L72 ComplementDD]: Start complementDD. Operand 95 states and 10140 transitions. [2023-08-31 02:46:52,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 95 states and 10140 transitions. [2023-08-31 02:46:52,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:46:52,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 95 states and 10140 transitions. [2023-08-31 02:46:52,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 96 states, 95 states have (on average 106.73684210526316) internal successors, (10140), 95 states have internal predecessors, (10140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:46:52,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 96 states, 96 states have (on average 296.0) internal successors, (28416), 96 states have internal predecessors, (28416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:46:52,281 INFO L81 ComplementDD]: Finished complementDD. Result has 96 states, 96 states have (on average 296.0) internal successors, (28416), 96 states have internal predecessors, (28416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:46:52,282 INFO L175 Difference]: Start difference. First operand has 290 places, 730 transitions, 10728 flow. Second operand 95 states and 10140 transitions. [2023-08-31 02:46:52,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 2492 transitions, 44660 flow [2023-08-31 02:47:52,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 2492 transitions, 40181 flow, removed 2219 selfloop flow, removed 31 redundant places. [2023-08-31 02:47:53,002 INFO L231 Difference]: Finished difference. Result has 397 places, 874 transitions, 14933 flow [2023-08-31 02:47:53,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=9953, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=730, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=425, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=95, PETRI_FLOW=14933, PETRI_PLACES=397, PETRI_TRANSITIONS=874} [2023-08-31 02:47:53,003 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 357 predicate places. [2023-08-31 02:47:53,003 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 874 transitions, 14933 flow [2023-08-31 02:47:53,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 98.51351351351352) internal successors, (3645), 37 states have internal predecessors, (3645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:47:53,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:47:53,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 02:47:53,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-31 02:47:53,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 02:47:53,205 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-31 02:47:53,205 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:47:53,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1244078106, now seen corresponding path program 9 times [2023-08-31 02:47:53,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:47:53,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367606913] [2023-08-31 02:47:53,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:47:53,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:47:53,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:47:53,671 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 02:47:53,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:47:53,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367606913] [2023-08-31 02:47:53,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367606913] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 02:47:53,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680387028] [2023-08-31 02:47:53,672 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-31 02:47:53,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 02:47:53,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 02:47:53,674 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) [2023-08-31 02:47:53,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-31 02:47:53,974 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-31 02:47:53,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 02:47:53,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 40 conjunts are in the unsatisfiable core [2023-08-31 02:47:53,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 02:47:54,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 02:47:54,087 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-31 02:47:54,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-08-31 02:47:54,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 02:47:54,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2023-08-31 02:47:54,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-08-31 02:47:54,329 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 02:47:54,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 02:47:56,844 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 02:47:56,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680387028] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 02:47:56,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 02:47:56,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 10] total 31 [2023-08-31 02:47:56,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305109726] [2023-08-31 02:47:56,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 02:47:56,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-31 02:47:56,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:47:56,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-31 02:47:56,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=795, Unknown=4, NotChecked=0, Total=992 [2023-08-31 02:47:57,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 296 [2023-08-31 02:47:57,257 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 874 transitions, 14933 flow. Second operand has 32 states, 32 states have (on average 99.8125) internal successors, (3194), 32 states have internal predecessors, (3194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:47:57,257 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:47:57,257 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 296 [2023-08-31 02:47:57,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:48:56,859 INFO L130 PetriNetUnfolder]: 94609/133781 cut-off events. [2023-08-31 02:48:56,859 INFO L131 PetriNetUnfolder]: For 32278899/32278899 co-relation queries the response was YES. [2023-08-31 02:49:01,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2287654 conditions, 133781 events. 94609/133781 cut-off events. For 32278899/32278899 co-relation queries the response was YES. Maximal size of possible extension queue 4459. Compared 951629 event pairs, 5602 based on Foata normal form. 130/133910 useless extension candidates. Maximal degree in co-relation 2287462. Up to 59892 conditions per place. [2023-08-31 02:49:02,057 INFO L137 encePairwiseOnDemand]: 284/296 looper letters, 593 selfloop transitions, 664 changer transitions 2487/3744 dead transitions. [2023-08-31 02:49:02,057 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 3744 transitions, 82544 flow [2023-08-31 02:49:02,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2023-08-31 02:49:02,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2023-08-31 02:49:02,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 11599 transitions. [2023-08-31 02:49:02,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3696774604793473 [2023-08-31 02:49:02,071 INFO L72 ComplementDD]: Start complementDD. Operand 106 states and 11599 transitions. [2023-08-31 02:49:02,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 106 states and 11599 transitions. [2023-08-31 02:49:02,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:49:02,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 106 states and 11599 transitions. [2023-08-31 02:49:02,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 107 states, 106 states have (on average 109.4245283018868) internal successors, (11599), 106 states have internal predecessors, (11599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:49:02,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 107 states, 107 states have (on average 296.0) internal successors, (31672), 107 states have internal predecessors, (31672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:49:02,118 INFO L81 ComplementDD]: Finished complementDD. Result has 107 states, 107 states have (on average 296.0) internal successors, (31672), 107 states have internal predecessors, (31672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:49:02,118 INFO L175 Difference]: Start difference. First operand has 397 places, 874 transitions, 14933 flow. Second operand 106 states and 11599 transitions. [2023-08-31 02:49:02,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 3744 transitions, 82544 flow Killed by 15