./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/mix055_power.oepc_pso.oepc_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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 ../sv-benchmarks/c/pthread-wmm/mix055_power.oepc_pso.oepc_rmo.oepc.i -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 b8efebf87dc67f98045ac231dc43d6a61f436e058244f16134f1d46d3b696c80 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 21:24:47,612 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:24:47,614 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:24:47,659 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:24:47,660 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:24:47,661 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:24:47,663 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:24:47,668 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:24:47,670 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:24:47,674 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:24:47,675 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:24:47,677 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:24:47,677 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:24:47,679 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:24:47,680 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:24:47,683 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:24:47,683 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:24:47,685 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:24:47,686 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:24:47,690 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:24:47,692 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:24:47,693 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:24:47,693 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:24:47,694 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:24:47,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:24:47,698 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:24:47,699 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:24:47,699 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:24:47,700 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:24:47,700 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:24:47,701 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:24:47,701 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:24:47,703 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:24:47,703 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:24:47,704 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:24:47,705 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:24:47,705 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:24:47,706 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:24:47,706 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:24:47,706 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:24:47,707 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:24:47,708 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:24:47,710 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 21:24:47,741 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:24:47,741 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:24:47,742 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:24:47,742 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:24:47,742 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:24:47,742 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:24:47,743 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:24:47,743 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:24:47,743 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:24:47,744 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:24:47,744 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:24:47,744 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 21:24:47,744 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:24:47,745 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:24:47,745 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:24:47,745 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:24:47,745 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:24:47,745 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:24:47,745 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:24:47,746 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:24:47,746 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:24:47,747 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:24:47,747 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:24:47,747 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:24:47,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:24:47,747 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:24:47,747 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:24:47,747 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:24:47,748 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 21:24:47,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 21:24:47,748 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:24:47,748 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:24:47,748 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:24:47,748 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8efebf87dc67f98045ac231dc43d6a61f436e058244f16134f1d46d3b696c80 [2022-07-22 21:24:47,987 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:24:48,009 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:24:48,011 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:24:48,012 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:24:48,013 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:24:48,014 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix055_power.oepc_pso.oepc_rmo.oepc.i [2022-07-22 21:24:48,079 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad7b7f7c7/af9e9e6c16c2491b97cb1128da985fec/FLAGb034d35fd [2022-07-22 21:24:48,512 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:24:48,513 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix055_power.oepc_pso.oepc_rmo.oepc.i [2022-07-22 21:24:48,528 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad7b7f7c7/af9e9e6c16c2491b97cb1128da985fec/FLAGb034d35fd [2022-07-22 21:24:48,876 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad7b7f7c7/af9e9e6c16c2491b97cb1128da985fec [2022-07-22 21:24:48,878 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:24:48,879 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:24:48,880 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:24:48,880 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:24:48,883 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:24:48,884 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:24:48" (1/1) ... [2022-07-22 21:24:48,885 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ad92fd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:24:48, skipping insertion in model container [2022-07-22 21:24:48,885 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:24:48" (1/1) ... [2022-07-22 21:24:48,893 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:24:48,939 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:24:49,088 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix055_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-07-22 21:24:49,275 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:24:49,284 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:24:49,294 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix055_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-07-22 21:24:49,342 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:24:49,373 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:24:49,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:24:49 WrapperNode [2022-07-22 21:24:49,375 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:24:49,376 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:24:49,376 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:24:49,376 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:24:49,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:24:49" (1/1) ... [2022-07-22 21:24:49,403 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:24:49" (1/1) ... [2022-07-22 21:24:49,432 INFO L137 Inliner]: procedures = 177, calls = 67, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 191 [2022-07-22 21:24:49,432 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:24:49,433 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:24:49,433 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:24:49,433 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:24:49,441 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:24:49" (1/1) ... [2022-07-22 21:24:49,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:24:49" (1/1) ... [2022-07-22 21:24:49,446 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:24:49" (1/1) ... [2022-07-22 21:24:49,446 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:24:49" (1/1) ... [2022-07-22 21:24:49,457 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:24:49" (1/1) ... [2022-07-22 21:24:49,461 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:24:49" (1/1) ... [2022-07-22 21:24:49,465 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:24:49" (1/1) ... [2022-07-22 21:24:49,469 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:24:49,470 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:24:49,470 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:24:49,470 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:24:49,471 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:24:49" (1/1) ... [2022-07-22 21:24:49,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:24:49,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:24:49,505 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) [2022-07-22 21:24:49,507 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 [2022-07-22 21:24:49,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 21:24:49,546 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-22 21:24:49,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:24:49,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 21:24:49,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 21:24:49,546 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-07-22 21:24:49,548 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-07-22 21:24:49,548 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-07-22 21:24:49,548 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-07-22 21:24:49,548 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-07-22 21:24:49,548 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-07-22 21:24:49,549 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-07-22 21:24:49,549 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-07-22 21:24:49,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 21:24:49,549 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-22 21:24:49,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:24:49,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:24:49,551 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-22 21:24:49,713 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:24:49,722 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:24:50,258 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:24:50,608 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:24:50,608 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 21:24:50,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:24:50 BoogieIcfgContainer [2022-07-22 21:24:50,611 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:24:50,613 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:24:50,613 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:24:50,616 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:24:50,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:24:48" (1/3) ... [2022-07-22 21:24:50,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@627be4b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:24:50, skipping insertion in model container [2022-07-22 21:24:50,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:24:49" (2/3) ... [2022-07-22 21:24:50,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@627be4b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:24:50, skipping insertion in model container [2022-07-22 21:24:50,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:24:50" (3/3) ... [2022-07-22 21:24:50,620 INFO L111 eAbstractionObserver]: Analyzing ICFG mix055_power.oepc_pso.oepc_rmo.oepc.i [2022-07-22 21:24:50,625 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-22 21:24:50,634 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:24:50,634 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-22 21:24:50,634 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-22 21:24:50,714 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-22 21:24:50,761 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 146 places, 135 transitions, 290 flow [2022-07-22 21:24:50,819 INFO L129 PetriNetUnfolder]: 2/131 cut-off events. [2022-07-22 21:24:50,820 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-22 21:24:50,824 INFO L84 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 131 events. 2/131 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2022-07-22 21:24:50,824 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 135 transitions, 290 flow [2022-07-22 21:24:50,831 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 142 places, 131 transitions, 274 flow [2022-07-22 21:24:50,848 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:24:50,855 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6f850074, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@343403da [2022-07-22 21:24:50,856 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-22 21:24:50,873 INFO L129 PetriNetUnfolder]: 0/49 cut-off events. [2022-07-22 21:24:50,874 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-22 21:24:50,874 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:24:50,875 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:24:50,875 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:24:50,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:24:50,881 INFO L85 PathProgramCache]: Analyzing trace with hash 927645456, now seen corresponding path program 1 times [2022-07-22 21:24:50,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:24:50,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204028844] [2022-07-22 21:24:50,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:24:50,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:24:51,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:24:51,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:24:51,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:24:51,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204028844] [2022-07-22 21:24:51,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204028844] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:24:51,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:24:51,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 21:24:51,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803204284] [2022-07-22 21:24:51,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:24:51,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:24:51,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:24:51,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:24:51,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:24:51,255 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 135 [2022-07-22 21:24:51,261 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 131 transitions, 274 flow. Second operand has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:51,262 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:24:51,262 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 135 [2022-07-22 21:24:51,263 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:24:51,540 INFO L129 PetriNetUnfolder]: 162/667 cut-off events. [2022-07-22 21:24:51,541 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-07-22 21:24:51,547 INFO L84 FinitePrefix]: Finished finitePrefix Result has 973 conditions, 667 events. 162/667 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3741 event pairs, 102 based on Foata normal form. 27/644 useless extension candidates. Maximal degree in co-relation 917. Up to 191 conditions per place. [2022-07-22 21:24:51,553 INFO L132 encePairwiseOnDemand]: 130/135 looper letters, 18 selfloop transitions, 2 changer transitions 0/135 dead transitions. [2022-07-22 21:24:51,553 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 135 transitions, 331 flow [2022-07-22 21:24:51,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:24:51,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:24:51,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 382 transitions. [2022-07-22 21:24:51,574 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9432098765432099 [2022-07-22 21:24:51,577 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 382 transitions. [2022-07-22 21:24:51,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 382 transitions. [2022-07-22 21:24:51,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:24:51,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 382 transitions. [2022-07-22 21:24:51,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:51,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:51,590 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:51,592 INFO L186 Difference]: Start difference. First operand has 142 places, 131 transitions, 274 flow. Second operand 3 states and 382 transitions. [2022-07-22 21:24:51,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 135 transitions, 331 flow [2022-07-22 21:24:51,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 135 transitions, 324 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-22 21:24:51,601 INFO L242 Difference]: Finished difference. Result has 138 places, 127 transitions, 266 flow [2022-07-22 21:24:51,603 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=266, PETRI_PLACES=138, PETRI_TRANSITIONS=127} [2022-07-22 21:24:51,607 INFO L279 CegarLoopForPetriNet]: 142 programPoint places, -4 predicate places. [2022-07-22 21:24:51,607 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 127 transitions, 266 flow [2022-07-22 21:24:51,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:51,608 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:24:51,608 INFO L200 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:24:51,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 21:24:51,609 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:24:51,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:24:51,609 INFO L85 PathProgramCache]: Analyzing trace with hash -110110, now seen corresponding path program 1 times [2022-07-22 21:24:51,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:24:51,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324124981] [2022-07-22 21:24:51,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:24:51,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:24:51,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:24:51,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:24:51,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:24:51,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324124981] [2022-07-22 21:24:51,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324124981] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:24:51,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:24:51,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:24:51,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876422689] [2022-07-22 21:24:51,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:24:51,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:24:51,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:24:51,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:24:51,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:24:51,883 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 135 [2022-07-22 21:24:51,885 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 127 transitions, 266 flow. Second operand has 7 states, 7 states have (on average 106.14285714285714) internal successors, (743), 7 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:51,885 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:24:51,885 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 135 [2022-07-22 21:24:51,885 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:24:55,988 INFO L129 PetriNetUnfolder]: 11035/24755 cut-off events. [2022-07-22 21:24:55,989 INFO L130 PetriNetUnfolder]: For 887/887 co-relation queries the response was YES. [2022-07-22 21:24:56,069 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41074 conditions, 24755 events. 11035/24755 cut-off events. For 887/887 co-relation queries the response was YES. Maximal size of possible extension queue 1075. Compared 252799 event pairs, 1675 based on Foata normal form. 0/24064 useless extension candidates. Maximal degree in co-relation 41016. Up to 5250 conditions per place. [2022-07-22 21:24:56,144 INFO L132 encePairwiseOnDemand]: 124/135 looper letters, 47 selfloop transitions, 9 changer transitions 119/262 dead transitions. [2022-07-22 21:24:56,145 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 262 transitions, 892 flow [2022-07-22 21:24:56,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 21:24:56,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-22 21:24:56,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1517 transitions. [2022-07-22 21:24:56,151 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8643874643874644 [2022-07-22 21:24:56,152 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1517 transitions. [2022-07-22 21:24:56,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1517 transitions. [2022-07-22 21:24:56,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:24:56,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1517 transitions. [2022-07-22 21:24:56,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 116.6923076923077) internal successors, (1517), 13 states have internal predecessors, (1517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:56,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 135.0) internal successors, (1890), 14 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:56,164 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 135.0) internal successors, (1890), 14 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:56,164 INFO L186 Difference]: Start difference. First operand has 138 places, 127 transitions, 266 flow. Second operand 13 states and 1517 transitions. [2022-07-22 21:24:56,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 262 transitions, 892 flow [2022-07-22 21:24:56,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 262 transitions, 866 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-22 21:24:56,172 INFO L242 Difference]: Finished difference. Result has 160 places, 121 transitions, 344 flow [2022-07-22 21:24:56,172 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=344, PETRI_PLACES=160, PETRI_TRANSITIONS=121} [2022-07-22 21:24:56,173 INFO L279 CegarLoopForPetriNet]: 142 programPoint places, 18 predicate places. [2022-07-22 21:24:56,173 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 121 transitions, 344 flow [2022-07-22 21:24:56,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.14285714285714) internal successors, (743), 7 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:56,174 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:24:56,174 INFO L200 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:24:56,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 21:24:56,175 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:24:56,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:24:56,176 INFO L85 PathProgramCache]: Analyzing trace with hash -90960159, now seen corresponding path program 1 times [2022-07-22 21:24:56,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:24:56,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868622426] [2022-07-22 21:24:56,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:24:56,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:24:56,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:24:56,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:24:56,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:24:56,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868622426] [2022-07-22 21:24:56,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868622426] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:24:56,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:24:56,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:24:56,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902939199] [2022-07-22 21:24:56,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:24:56,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:24:56,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:24:56,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:24:56,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:24:56,384 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 135 [2022-07-22 21:24:56,385 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 121 transitions, 344 flow. Second operand has 7 states, 7 states have (on average 106.28571428571429) internal successors, (744), 7 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:56,385 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:24:56,385 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 135 [2022-07-22 21:24:56,386 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:24:58,633 INFO L129 PetriNetUnfolder]: 7875/14020 cut-off events. [2022-07-22 21:24:58,633 INFO L130 PetriNetUnfolder]: For 23202/23205 co-relation queries the response was YES. [2022-07-22 21:24:58,680 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40388 conditions, 14020 events. 7875/14020 cut-off events. For 23202/23205 co-relation queries the response was YES. Maximal size of possible extension queue 762. Compared 110919 event pairs, 742 based on Foata normal form. 256/13984 useless extension candidates. Maximal degree in co-relation 40318. Up to 4293 conditions per place. [2022-07-22 21:24:58,733 INFO L132 encePairwiseOnDemand]: 123/135 looper letters, 48 selfloop transitions, 17 changer transitions 100/252 dead transitions. [2022-07-22 21:24:58,734 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 252 transitions, 1364 flow [2022-07-22 21:24:58,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 21:24:58,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-22 21:24:58,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1499 transitions. [2022-07-22 21:24:58,739 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8541310541310542 [2022-07-22 21:24:58,740 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1499 transitions. [2022-07-22 21:24:58,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1499 transitions. [2022-07-22 21:24:58,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:24:58,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1499 transitions. [2022-07-22 21:24:58,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 115.3076923076923) internal successors, (1499), 13 states have internal predecessors, (1499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:58,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 135.0) internal successors, (1890), 14 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:58,749 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 135.0) internal successors, (1890), 14 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:58,749 INFO L186 Difference]: Start difference. First operand has 160 places, 121 transitions, 344 flow. Second operand 13 states and 1499 transitions. [2022-07-22 21:24:58,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 252 transitions, 1364 flow [2022-07-22 21:24:58,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 252 transitions, 1340 flow, removed 12 selfloop flow, removed 3 redundant places. [2022-07-22 21:24:58,850 INFO L242 Difference]: Finished difference. Result has 158 places, 133 transitions, 546 flow [2022-07-22 21:24:58,851 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=546, PETRI_PLACES=158, PETRI_TRANSITIONS=133} [2022-07-22 21:24:58,853 INFO L279 CegarLoopForPetriNet]: 142 programPoint places, 16 predicate places. [2022-07-22 21:24:58,853 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 133 transitions, 546 flow [2022-07-22 21:24:58,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.28571428571429) internal successors, (744), 7 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:58,853 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:24:58,854 INFO L200 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, 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, 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] [2022-07-22 21:24:58,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 21:24:58,854 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:24:58,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:24:58,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1605361214, now seen corresponding path program 1 times [2022-07-22 21:24:58,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:24:58,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412758301] [2022-07-22 21:24:58,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:24:58,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:24:58,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:24:59,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:24:59,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:24:59,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412758301] [2022-07-22 21:24:59,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412758301] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:24:59,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:24:59,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 21:24:59,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117220164] [2022-07-22 21:24:59,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:24:59,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 21:24:59,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:24:59,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 21:24:59,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 21:24:59,014 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 135 [2022-07-22 21:24:59,015 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 133 transitions, 546 flow. Second operand has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:59,015 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:24:59,015 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 135 [2022-07-22 21:24:59,015 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:25:03,306 INFO L129 PetriNetUnfolder]: 18377/31822 cut-off events. [2022-07-22 21:25:03,306 INFO L130 PetriNetUnfolder]: For 50892/59987 co-relation queries the response was YES. [2022-07-22 21:25:03,467 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78278 conditions, 31822 events. 18377/31822 cut-off events. For 50892/59987 co-relation queries the response was YES. Maximal size of possible extension queue 1924. Compared 281232 event pairs, 1380 based on Foata normal form. 1316/31354 useless extension candidates. Maximal degree in co-relation 78198. Up to 9854 conditions per place. [2022-07-22 21:25:03,595 INFO L132 encePairwiseOnDemand]: 124/135 looper letters, 101 selfloop transitions, 20 changer transitions 0/229 dead transitions. [2022-07-22 21:25:03,595 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 229 transitions, 1196 flow [2022-07-22 21:25:03,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 21:25:03,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-22 21:25:03,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1187 transitions. [2022-07-22 21:25:03,599 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8792592592592593 [2022-07-22 21:25:03,600 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1187 transitions. [2022-07-22 21:25:03,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1187 transitions. [2022-07-22 21:25:03,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:25:03,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1187 transitions. [2022-07-22 21:25:03,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 118.7) internal successors, (1187), 10 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:25:03,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 135.0) internal successors, (1485), 11 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:25:03,610 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 135.0) internal successors, (1485), 11 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:25:03,610 INFO L186 Difference]: Start difference. First operand has 158 places, 133 transitions, 546 flow. Second operand 10 states and 1187 transitions. [2022-07-22 21:25:03,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 229 transitions, 1196 flow [2022-07-22 21:25:03,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 229 transitions, 1170 flow, removed 13 selfloop flow, removed 3 redundant places. [2022-07-22 21:25:03,764 INFO L242 Difference]: Finished difference. Result has 161 places, 151 transitions, 663 flow [2022-07-22 21:25:03,769 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=663, PETRI_PLACES=161, PETRI_TRANSITIONS=151} [2022-07-22 21:25:03,770 INFO L279 CegarLoopForPetriNet]: 142 programPoint places, 19 predicate places. [2022-07-22 21:25:03,770 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 151 transitions, 663 flow [2022-07-22 21:25:03,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:25:03,771 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:25:03,771 INFO L200 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, 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, 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] [2022-07-22 21:25:03,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 21:25:03,772 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:25:03,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:25:03,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1553476620, now seen corresponding path program 1 times [2022-07-22 21:25:03,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:25:03,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824094769] [2022-07-22 21:25:03,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:25:03,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:25:03,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:25:03,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:25:03,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:25:03,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824094769] [2022-07-22 21:25:03,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824094769] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:25:03,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:25:03,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 21:25:03,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497442656] [2022-07-22 21:25:03,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:25:03,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 21:25:03,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:25:03,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 21:25:03,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 21:25:03,905 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 135 [2022-07-22 21:25:03,906 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 151 transitions, 663 flow. Second operand has 6 states, 6 states have (on average 112.5) internal successors, (675), 6 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:25:03,906 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:25:03,907 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 135 [2022-07-22 21:25:03,907 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:25:06,701 INFO L129 PetriNetUnfolder]: 7685/20850 cut-off events. [2022-07-22 21:25:06,701 INFO L130 PetriNetUnfolder]: For 29861/32828 co-relation queries the response was YES. [2022-07-22 21:25:06,822 INFO L84 FinitePrefix]: Finished finitePrefix Result has 56504 conditions, 20850 events. 7685/20850 cut-off events. For 29861/32828 co-relation queries the response was YES. Maximal size of possible extension queue 1288. Compared 254478 event pairs, 2942 based on Foata normal form. 774/20215 useless extension candidates. Maximal degree in co-relation 56418. Up to 3792 conditions per place. [2022-07-22 21:25:06,929 INFO L132 encePairwiseOnDemand]: 129/135 looper letters, 74 selfloop transitions, 19 changer transitions 0/214 dead transitions. [2022-07-22 21:25:06,930 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 214 transitions, 1171 flow [2022-07-22 21:25:06,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 21:25:06,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-22 21:25:06,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1066 transitions. [2022-07-22 21:25:06,933 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8773662551440329 [2022-07-22 21:25:06,933 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1066 transitions. [2022-07-22 21:25:06,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1066 transitions. [2022-07-22 21:25:06,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:25:06,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1066 transitions. [2022-07-22 21:25:06,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 118.44444444444444) internal successors, (1066), 9 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:25:06,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 135.0) internal successors, (1350), 10 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:25:06,939 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 135.0) internal successors, (1350), 10 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:25:06,940 INFO L186 Difference]: Start difference. First operand has 161 places, 151 transitions, 663 flow. Second operand 9 states and 1066 transitions. [2022-07-22 21:25:06,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 214 transitions, 1171 flow [2022-07-22 21:25:07,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 214 transitions, 1157 flow, removed 6 selfloop flow, removed 7 redundant places. [2022-07-22 21:25:07,108 INFO L242 Difference]: Finished difference. Result has 169 places, 162 transitions, 805 flow [2022-07-22 21:25:07,109 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=649, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=805, PETRI_PLACES=169, PETRI_TRANSITIONS=162} [2022-07-22 21:25:07,111 INFO L279 CegarLoopForPetriNet]: 142 programPoint places, 27 predicate places. [2022-07-22 21:25:07,111 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 162 transitions, 805 flow [2022-07-22 21:25:07,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 112.5) internal successors, (675), 6 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:25:07,112 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:25:07,112 INFO L200 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, 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, 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] [2022-07-22 21:25:07,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 21:25:07,112 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:25:07,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:25:07,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1599088068, now seen corresponding path program 1 times [2022-07-22 21:25:07,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:25:07,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566389231] [2022-07-22 21:25:07,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:25:07,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:25:07,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:25:07,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:25:07,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:25:07,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566389231] [2022-07-22 21:25:07,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566389231] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:25:07,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:25:07,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:25:07,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91462205] [2022-07-22 21:25:07,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:25:07,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:25:07,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:25:07,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:25:07,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:25:07,240 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 135 [2022-07-22 21:25:07,241 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 162 transitions, 805 flow. Second operand has 7 states, 7 states have (on average 110.0) internal successors, (770), 7 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:25:07,241 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:25:07,241 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 135 [2022-07-22 21:25:07,241 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:25:13,160 INFO L129 PetriNetUnfolder]: 25369/43958 cut-off events. [2022-07-22 21:25:13,161 INFO L130 PetriNetUnfolder]: For 104815/114790 co-relation queries the response was YES. [2022-07-22 21:25:13,410 INFO L84 FinitePrefix]: Finished finitePrefix Result has 142734 conditions, 43958 events. 25369/43958 cut-off events. For 104815/114790 co-relation queries the response was YES. Maximal size of possible extension queue 2893. Compared 413198 event pairs, 1555 based on Foata normal form. 2146/44478 useless extension candidates. Maximal degree in co-relation 142647. Up to 9552 conditions per place. [2022-07-22 21:25:13,493 INFO L132 encePairwiseOnDemand]: 124/135 looper letters, 127 selfloop transitions, 38 changer transitions 0/284 dead transitions. [2022-07-22 21:25:13,493 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 284 transitions, 1825 flow [2022-07-22 21:25:13,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 21:25:13,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-22 21:25:13,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1548 transitions. [2022-07-22 21:25:13,497 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.882051282051282 [2022-07-22 21:25:13,497 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1548 transitions. [2022-07-22 21:25:13,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1548 transitions. [2022-07-22 21:25:13,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:25:13,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1548 transitions. [2022-07-22 21:25:13,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 119.07692307692308) internal successors, (1548), 13 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:25:13,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 135.0) internal successors, (1890), 14 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:25:13,506 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 135.0) internal successors, (1890), 14 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:25:13,506 INFO L186 Difference]: Start difference. First operand has 169 places, 162 transitions, 805 flow. Second operand 13 states and 1548 transitions. [2022-07-22 21:25:13,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 284 transitions, 1825 flow [2022-07-22 21:25:14,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 284 transitions, 1807 flow, removed 5 selfloop flow, removed 1 redundant places. [2022-07-22 21:25:14,372 INFO L242 Difference]: Finished difference. Result has 186 places, 182 transitions, 1080 flow [2022-07-22 21:25:14,372 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=787, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1080, PETRI_PLACES=186, PETRI_TRANSITIONS=182} [2022-07-22 21:25:14,373 INFO L279 CegarLoopForPetriNet]: 142 programPoint places, 44 predicate places. [2022-07-22 21:25:14,373 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 182 transitions, 1080 flow [2022-07-22 21:25:14,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 110.0) internal successors, (770), 7 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:25:14,374 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:25:14,374 INFO L200 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, 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, 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, 1] [2022-07-22 21:25:14,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 21:25:14,374 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:25:14,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:25:14,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1344298672, now seen corresponding path program 1 times [2022-07-22 21:25:14,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:25:14,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119627749] [2022-07-22 21:25:14,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:25:14,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:25:14,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:25:14,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:25:14,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:25:14,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119627749] [2022-07-22 21:25:14,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119627749] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:25:14,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:25:14,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 21:25:14,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871240689] [2022-07-22 21:25:14,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:25:14,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 21:25:14,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:25:14,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 21:25:14,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-22 21:25:14,518 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 135 [2022-07-22 21:25:14,519 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 182 transitions, 1080 flow. Second operand has 8 states, 8 states have (on average 110.125) internal successors, (881), 8 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:25:14,519 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:25:14,519 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 135 [2022-07-22 21:25:14,520 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:25:20,940 INFO L129 PetriNetUnfolder]: 24400/42056 cut-off events. [2022-07-22 21:25:20,940 INFO L130 PetriNetUnfolder]: For 175686/185497 co-relation queries the response was YES. [2022-07-22 21:25:21,278 INFO L84 FinitePrefix]: Finished finitePrefix Result has 164975 conditions, 42056 events. 24400/42056 cut-off events. For 175686/185497 co-relation queries the response was YES. Maximal size of possible extension queue 2897. Compared 396087 event pairs, 1413 based on Foata normal form. 1703/42172 useless extension candidates. Maximal degree in co-relation 164880. Up to 9214 conditions per place. [2022-07-22 21:25:21,366 INFO L132 encePairwiseOnDemand]: 124/135 looper letters, 122 selfloop transitions, 58 changer transitions 41/329 dead transitions. [2022-07-22 21:25:21,366 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 329 transitions, 2480 flow [2022-07-22 21:25:21,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 21:25:21,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-22 21:25:21,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1908 transitions. [2022-07-22 21:25:21,371 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8833333333333333 [2022-07-22 21:25:21,371 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1908 transitions. [2022-07-22 21:25:21,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1908 transitions. [2022-07-22 21:25:21,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:25:21,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1908 transitions. [2022-07-22 21:25:21,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 119.25) internal successors, (1908), 16 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:25:21,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 135.0) internal successors, (2295), 17 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:25:21,380 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 135.0) internal successors, (2295), 17 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:25:21,380 INFO L186 Difference]: Start difference. First operand has 186 places, 182 transitions, 1080 flow. Second operand 16 states and 1908 transitions. [2022-07-22 21:25:21,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 329 transitions, 2480 flow [2022-07-22 21:25:28,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 329 transitions, 2355 flow, removed 48 selfloop flow, removed 6 redundant places. [2022-07-22 21:25:28,088 INFO L242 Difference]: Finished difference. Result has 199 places, 197 transitions, 1318 flow [2022-07-22 21:25:28,089 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=921, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1318, PETRI_PLACES=199, PETRI_TRANSITIONS=197} [2022-07-22 21:25:28,089 INFO L279 CegarLoopForPetriNet]: 142 programPoint places, 57 predicate places. [2022-07-22 21:25:28,090 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 197 transitions, 1318 flow [2022-07-22 21:25:28,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 110.125) internal successors, (881), 8 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:25:28,090 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:25:28,090 INFO L200 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, 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, 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, 1, 1, 1, 1, 1, 1] [2022-07-22 21:25:28,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 21:25:28,090 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:25:28,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:25:28,091 INFO L85 PathProgramCache]: Analyzing trace with hash 930517507, now seen corresponding path program 1 times [2022-07-22 21:25:28,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:25:28,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009449849] [2022-07-22 21:25:28,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:25:28,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:25:28,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:25:28,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:25:28,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:25:28,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009449849] [2022-07-22 21:25:28,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009449849] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:25:28,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:25:28,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-22 21:25:28,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377781431] [2022-07-22 21:25:28,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:25:28,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-22 21:25:28,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:25:28,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-22 21:25:28,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-07-22 21:25:28,398 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 135 [2022-07-22 21:25:28,399 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 197 transitions, 1318 flow. Second operand has 14 states, 14 states have (on average 103.92857142857143) internal successors, (1455), 14 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:25:28,399 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:25:28,400 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 135 [2022-07-22 21:25:28,400 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:25:31,557 INFO L129 PetriNetUnfolder]: 8493/26987 cut-off events. [2022-07-22 21:25:31,557 INFO L130 PetriNetUnfolder]: For 137092/142757 co-relation queries the response was YES. [2022-07-22 21:25:31,992 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104530 conditions, 26987 events. 8493/26987 cut-off events. For 137092/142757 co-relation queries the response was YES. Maximal size of possible extension queue 3530. Compared 399345 event pairs, 128 based on Foata normal form. 20/25125 useless extension candidates. Maximal degree in co-relation 104422. Up to 6619 conditions per place. [2022-07-22 21:25:32,093 INFO L132 encePairwiseOnDemand]: 121/135 looper letters, 64 selfloop transitions, 15 changer transitions 14/260 dead transitions. [2022-07-22 21:25:32,093 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 260 transitions, 1800 flow [2022-07-22 21:25:32,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 21:25:32,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-22 21:25:32,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1515 transitions. [2022-07-22 21:25:32,097 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8015873015873016 [2022-07-22 21:25:32,097 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1515 transitions. [2022-07-22 21:25:32,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1515 transitions. [2022-07-22 21:25:32,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:25:32,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1515 transitions. [2022-07-22 21:25:32,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 108.21428571428571) internal successors, (1515), 14 states have internal predecessors, (1515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:25:32,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 135.0) internal successors, (2025), 15 states have internal predecessors, (2025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:25:32,105 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 135.0) internal successors, (2025), 15 states have internal predecessors, (2025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:25:32,105 INFO L186 Difference]: Start difference. First operand has 199 places, 197 transitions, 1318 flow. Second operand 14 states and 1515 transitions. [2022-07-22 21:25:32,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 260 transitions, 1800 flow