./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/mix021_power.oepc_pso.oepc_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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/mix021_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 8943650a21e052edc6a6af145da55799620df509a78c8e503eca6167eaa2f8fc --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:05:25,719 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:05:25,720 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:05:25,745 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:05:25,745 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:05:25,746 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:05:25,748 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:05:25,753 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:05:25,755 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:05:25,760 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:05:25,760 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:05:25,761 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:05:25,761 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:05:25,762 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:05:25,762 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:05:25,764 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:05:25,765 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:05:25,766 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:05:25,768 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:05:25,770 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:05:25,776 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:05:25,777 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:05:25,778 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:05:25,778 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:05:25,779 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:05:25,781 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:05:25,781 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:05:25,781 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:05:25,782 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:05:25,782 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:05:25,782 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:05:25,783 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:05:25,783 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:05:25,784 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:05:25,784 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:05:25,785 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:05:25,785 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:05:25,785 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:05:25,786 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:05:25,786 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:05:25,786 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:05:25,787 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:05:25,788 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:05:25,801 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:05:25,801 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:05:25,802 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:05:25,802 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:05:25,802 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:05:25,803 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:05:25,803 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:05:25,805 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:05:25,805 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:05:25,805 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:05:25,805 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:05:25,805 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:05:25,806 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:05:25,806 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:05:25,806 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:05:25,806 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:05:25,806 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:05:25,807 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:05:25,808 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:05:25,808 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:05:25,808 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:05:25,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:05:25,809 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:05:25,809 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:05:25,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:05:25,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:05:25,809 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:05:25,809 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:05:25,810 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:05:25,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:05:25,810 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:05:25,810 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:05:25,810 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:05:25,810 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8943650a21e052edc6a6af145da55799620df509a78c8e503eca6167eaa2f8fc [2022-07-12 10:05:26,017 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:05:26,035 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:05:26,038 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:05:26,039 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:05:26,039 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:05:26,040 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix021_power.oepc_pso.oepc_rmo.oepc.i [2022-07-12 10:05:26,103 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b353443af/678e6d7c936c41caab8714bbd95b0dee/FLAGa2af0903d [2022-07-12 10:05:26,516 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:05:26,516 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix021_power.oepc_pso.oepc_rmo.oepc.i [2022-07-12 10:05:26,526 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b353443af/678e6d7c936c41caab8714bbd95b0dee/FLAGa2af0903d [2022-07-12 10:05:26,535 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b353443af/678e6d7c936c41caab8714bbd95b0dee [2022-07-12 10:05:26,536 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:05:26,537 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:05:26,539 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:05:26,539 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:05:26,542 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:05:26,542 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:05:26" (1/1) ... [2022-07-12 10:05:26,543 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ba58279 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:05:26, skipping insertion in model container [2022-07-12 10:05:26,543 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:05:26" (1/1) ... [2022-07-12 10:05:26,554 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:05:26,595 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:05:26,718 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/mix021_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-07-12 10:05:26,869 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:05:26,874 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:05:26,887 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/mix021_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-07-12 10:05:26,927 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:05:26,951 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:05:26,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:05:26 WrapperNode [2022-07-12 10:05:26,951 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:05:26,952 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:05:26,952 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:05:26,952 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:05:26,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:05:26" (1/1) ... [2022-07-12 10:05:26,979 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:05:26" (1/1) ... [2022-07-12 10:05:27,010 INFO L137 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 192 [2022-07-12 10:05:27,011 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:05:27,011 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:05:27,012 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:05:27,012 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:05:27,018 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:05:26" (1/1) ... [2022-07-12 10:05:27,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:05:26" (1/1) ... [2022-07-12 10:05:27,021 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:05:26" (1/1) ... [2022-07-12 10:05:27,022 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:05:26" (1/1) ... [2022-07-12 10:05:27,028 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:05:26" (1/1) ... [2022-07-12 10:05:27,032 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:05:26" (1/1) ... [2022-07-12 10:05:27,034 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:05:26" (1/1) ... [2022-07-12 10:05:27,037 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:05:27,038 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:05:27,038 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:05:27,038 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:05:27,043 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:05:26" (1/1) ... [2022-07-12 10:05:27,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:05:27,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:05:27,078 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) [2022-07-12 10:05:27,083 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 [2022-07-12 10:05:27,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:05:27,105 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-12 10:05:27,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:05:27,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:05:27,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:05:27,106 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-07-12 10:05:27,106 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-07-12 10:05:27,106 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-07-12 10:05:27,106 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-07-12 10:05:27,106 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-07-12 10:05:27,106 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-07-12 10:05:27,107 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-07-12 10:05:27,107 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-07-12 10:05:27,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:05:27,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-12 10:05:27,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:05:27,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:05:27,109 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 10:05:27,247 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:05:27,254 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:05:27,756 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:05:28,023 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:05:28,024 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 10:05:28,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:05:28 BoogieIcfgContainer [2022-07-12 10:05:28,026 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:05:28,029 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:05:28,029 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:05:28,032 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:05:28,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:05:26" (1/3) ... [2022-07-12 10:05:28,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1de6b0a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:05:28, skipping insertion in model container [2022-07-12 10:05:28,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:05:26" (2/3) ... [2022-07-12 10:05:28,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1de6b0a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:05:28, skipping insertion in model container [2022-07-12 10:05:28,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:05:28" (3/3) ... [2022-07-12 10:05:28,034 INFO L111 eAbstractionObserver]: Analyzing ICFG mix021_power.oepc_pso.oepc_rmo.oepc.i [2022-07-12 10:05:28,039 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:05:28,046 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:05:28,047 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 10:05:28,047 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:05:28,116 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-12 10:05:28,148 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 148 places, 137 transitions, 294 flow [2022-07-12 10:05:28,180 INFO L129 PetriNetUnfolder]: 2/133 cut-off events. [2022-07-12 10:05:28,181 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-12 10:05:28,183 INFO L84 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 133 events. 2/133 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 68 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 92. Up to 2 conditions per place. [2022-07-12 10:05:28,184 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 137 transitions, 294 flow [2022-07-12 10:05:28,187 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 133 transitions, 278 flow [2022-07-12 10:05:28,194 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:05:28,199 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@5a4c7a48, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@78a0432d [2022-07-12 10:05:28,199 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-12 10:05:28,205 INFO L129 PetriNetUnfolder]: 0/49 cut-off events. [2022-07-12 10:05:28,205 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-12 10:05:28,206 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:05:28,206 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] [2022-07-12 10:05:28,207 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:05:28,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:05:28,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1338494467, now seen corresponding path program 1 times [2022-07-12 10:05:28,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:05:28,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512777939] [2022-07-12 10:05:28,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:05:28,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:05:28,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:05:28,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:05:28,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:05:28,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512777939] [2022-07-12 10:05:28,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512777939] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:05:28,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:05:28,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 10:05:28,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631833964] [2022-07-12 10:05:28,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:05:28,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:05:28,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:05:28,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:05:28,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:05:28,504 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 137 [2022-07-12 10:05:28,510 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 133 transitions, 278 flow. Second operand has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:05:28,510 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:05:28,511 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 137 [2022-07-12 10:05:28,512 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:05:28,753 INFO L129 PetriNetUnfolder]: 162/620 cut-off events. [2022-07-12 10:05:28,754 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-07-12 10:05:28,759 INFO L84 FinitePrefix]: Finished finitePrefix Result has 926 conditions, 620 events. 162/620 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3375 event pairs, 132 based on Foata normal form. 41/619 useless extension candidates. Maximal degree in co-relation 869. Up to 191 conditions per place. [2022-07-12 10:05:28,764 INFO L132 encePairwiseOnDemand]: 132/137 looper letters, 18 selfloop transitions, 2 changer transitions 0/137 dead transitions. [2022-07-12 10:05:28,764 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 137 transitions, 335 flow [2022-07-12 10:05:28,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:05:28,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:05:28,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 388 transitions. [2022-07-12 10:05:28,781 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9440389294403893 [2022-07-12 10:05:28,782 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 388 transitions. [2022-07-12 10:05:28,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 388 transitions. [2022-07-12 10:05:28,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:05:28,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 388 transitions. [2022-07-12 10:05:28,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:05:28,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:05:28,799 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:05:28,801 INFO L186 Difference]: Start difference. First operand has 144 places, 133 transitions, 278 flow. Second operand 3 states and 388 transitions. [2022-07-12 10:05:28,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 137 transitions, 335 flow [2022-07-12 10:05:28,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 137 transitions, 328 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-12 10:05:28,808 INFO L242 Difference]: Finished difference. Result has 140 places, 129 transitions, 270 flow [2022-07-12 10:05:28,810 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=270, PETRI_PLACES=140, PETRI_TRANSITIONS=129} [2022-07-12 10:05:28,813 INFO L279 CegarLoopForPetriNet]: 144 programPoint places, -4 predicate places. [2022-07-12 10:05:28,813 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 129 transitions, 270 flow [2022-07-12 10:05:28,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:05:28,814 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:05:28,814 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] [2022-07-12 10:05:28,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:05:28,815 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)] === [2022-07-12 10:05:28,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:05:28,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1196194587, now seen corresponding path program 1 times [2022-07-12 10:05:28,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:05:28,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186150850] [2022-07-12 10:05:28,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:05:28,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:05:28,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:05:29,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:05:29,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:05:29,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186150850] [2022-07-12 10:05:29,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186150850] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:05:29,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:05:29,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:05:29,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252644204] [2022-07-12 10:05:29,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:05:29,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:05:29,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:05:29,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:05:29,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:05:29,043 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 137 [2022-07-12 10:05:29,046 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 129 transitions, 270 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) [2022-07-12 10:05:29,047 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:05:29,047 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 137 [2022-07-12 10:05:29,047 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:05:32,586 INFO L129 PetriNetUnfolder]: 14819/32121 cut-off events. [2022-07-12 10:05:32,586 INFO L130 PetriNetUnfolder]: For 1153/1153 co-relation queries the response was YES. [2022-07-12 10:05:32,723 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53787 conditions, 32121 events. 14819/32121 cut-off events. For 1153/1153 co-relation queries the response was YES. Maximal size of possible extension queue 1283. Compared 337080 event pairs, 1155 based on Foata normal form. 0/31513 useless extension candidates. Maximal degree in co-relation 53727. Up to 7247 conditions per place. [2022-07-12 10:05:32,831 INFO L132 encePairwiseOnDemand]: 123/137 looper letters, 48 selfloop transitions, 12 changer transitions 128/275 dead transitions. [2022-07-12 10:05:32,831 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 275 transitions, 944 flow [2022-07-12 10:05:32,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 10:05:32,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-12 10:05:32,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1530 transitions. [2022-07-12 10:05:32,834 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8590679393599102 [2022-07-12 10:05:32,835 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1530 transitions. [2022-07-12 10:05:32,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1530 transitions. [2022-07-12 10:05:32,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:05:32,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1530 transitions. [2022-07-12 10:05:32,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 117.6923076923077) internal successors, (1530), 13 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:05:32,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:05:32,842 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:05:32,842 INFO L186 Difference]: Start difference. First operand has 140 places, 129 transitions, 270 flow. Second operand 13 states and 1530 transitions. [2022-07-12 10:05:32,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 275 transitions, 944 flow [2022-07-12 10:05:32,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 275 transitions, 918 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-12 10:05:32,848 INFO L242 Difference]: Finished difference. Result has 162 places, 124 transitions, 370 flow [2022-07-12 10:05:32,849 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=370, PETRI_PLACES=162, PETRI_TRANSITIONS=124} [2022-07-12 10:05:32,849 INFO L279 CegarLoopForPetriNet]: 144 programPoint places, 18 predicate places. [2022-07-12 10:05:32,850 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 124 transitions, 370 flow [2022-07-12 10:05:32,850 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) [2022-07-12 10:05:32,850 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:05:32,850 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] [2022-07-12 10:05:32,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 10:05:32,852 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)] === [2022-07-12 10:05:32,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:05:32,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1504018406, now seen corresponding path program 1 times [2022-07-12 10:05:32,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:05:32,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123713233] [2022-07-12 10:05:32,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:05:32,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:05:32,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:05:33,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:05:33,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:05:33,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123713233] [2022-07-12 10:05:33,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123713233] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:05:33,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:05:33,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:05:33,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932307409] [2022-07-12 10:05:33,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:05:33,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:05:33,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:05:33,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:05:33,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:05:33,017 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 137 [2022-07-12 10:05:33,018 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 124 transitions, 370 flow. Second operand has 7 states, 7 states have (on average 106.42857142857143) internal successors, (745), 7 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:05:33,018 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:05:33,018 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 137 [2022-07-12 10:05:33,018 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:05:35,237 INFO L129 PetriNetUnfolder]: 10158/16559 cut-off events. [2022-07-12 10:05:35,237 INFO L130 PetriNetUnfolder]: For 29818/29834 co-relation queries the response was YES. [2022-07-12 10:05:35,300 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51627 conditions, 16559 events. 10158/16559 cut-off events. For 29818/29834 co-relation queries the response was YES. Maximal size of possible extension queue 827. Compared 121071 event pairs, 1334 based on Foata normal form. 368/16691 useless extension candidates. Maximal degree in co-relation 51551. Up to 4924 conditions per place. [2022-07-12 10:05:35,352 INFO L132 encePairwiseOnDemand]: 125/137 looper letters, 54 selfloop transitions, 10 changer transitions 118/269 dead transitions. [2022-07-12 10:05:35,352 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 269 transitions, 1474 flow [2022-07-12 10:05:35,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 10:05:35,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-12 10:05:35,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1512 transitions. [2022-07-12 10:05:35,357 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8489612577203818 [2022-07-12 10:05:35,357 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1512 transitions. [2022-07-12 10:05:35,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1512 transitions. [2022-07-12 10:05:35,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:05:35,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1512 transitions. [2022-07-12 10:05:35,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 116.3076923076923) internal successors, (1512), 13 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:05:35,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:05:35,365 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:05:35,365 INFO L186 Difference]: Start difference. First operand has 162 places, 124 transitions, 370 flow. Second operand 13 states and 1512 transitions. [2022-07-12 10:05:35,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 269 transitions, 1474 flow [2022-07-12 10:05:35,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 269 transitions, 1450 flow, removed 12 selfloop flow, removed 3 redundant places. [2022-07-12 10:05:35,429 INFO L242 Difference]: Finished difference. Result has 160 places, 130 transitions, 496 flow [2022-07-12 10:05:35,429 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=496, PETRI_PLACES=160, PETRI_TRANSITIONS=130} [2022-07-12 10:05:35,431 INFO L279 CegarLoopForPetriNet]: 144 programPoint places, 16 predicate places. [2022-07-12 10:05:35,431 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 130 transitions, 496 flow [2022-07-12 10:05:35,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.42857142857143) internal successors, (745), 7 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:05:35,432 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:05:35,432 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] [2022-07-12 10:05:35,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 10:05:35,432 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)] === [2022-07-12 10:05:35,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:05:35,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1207635186, now seen corresponding path program 1 times [2022-07-12 10:05:35,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:05:35,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508185872] [2022-07-12 10:05:35,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:05:35,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:05:35,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:05:35,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:05:35,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:05:35,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508185872] [2022-07-12 10:05:35,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508185872] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:05:35,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:05:35,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:05:35,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191184064] [2022-07-12 10:05:35,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:05:35,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:05:35,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:05:35,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:05:35,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:05:35,605 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 137 [2022-07-12 10:05:35,607 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 130 transitions, 496 flow. Second operand has 7 states, 7 states have (on average 106.57142857142857) internal successors, (746), 7 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:05:35,607 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:05:35,607 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 137 [2022-07-12 10:05:35,608 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:05:37,965 INFO L129 PetriNetUnfolder]: 8555/14903 cut-off events. [2022-07-12 10:05:37,965 INFO L130 PetriNetUnfolder]: For 51175/51592 co-relation queries the response was YES. [2022-07-12 10:05:38,025 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51571 conditions, 14903 events. 8555/14903 cut-off events. For 51175/51592 co-relation queries the response was YES. Maximal size of possible extension queue 727. Compared 114885 event pairs, 1394 based on Foata normal form. 290/14710 useless extension candidates. Maximal degree in co-relation 51484. Up to 4791 conditions per place. [2022-07-12 10:05:38,071 INFO L132 encePairwiseOnDemand]: 122/137 looper letters, 54 selfloop transitions, 24 changer transitions 106/271 dead transitions. [2022-07-12 10:05:38,071 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 271 transitions, 1796 flow [2022-07-12 10:05:38,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 10:05:38,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-12 10:05:38,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1510 transitions. [2022-07-12 10:05:38,080 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8478382930937676 [2022-07-12 10:05:38,081 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1510 transitions. [2022-07-12 10:05:38,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1510 transitions. [2022-07-12 10:05:38,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:05:38,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1510 transitions. [2022-07-12 10:05:38,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 116.15384615384616) internal successors, (1510), 13 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:05:38,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:05:38,094 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:05:38,094 INFO L186 Difference]: Start difference. First operand has 160 places, 130 transitions, 496 flow. Second operand 13 states and 1510 transitions. [2022-07-12 10:05:38,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 271 transitions, 1796 flow [2022-07-12 10:05:38,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 271 transitions, 1719 flow, removed 36 selfloop flow, removed 4 redundant places. [2022-07-12 10:05:38,246 INFO L242 Difference]: Finished difference. Result has 171 places, 144 transitions, 782 flow [2022-07-12 10:05:38,246 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=782, PETRI_PLACES=171, PETRI_TRANSITIONS=144} [2022-07-12 10:05:38,247 INFO L279 CegarLoopForPetriNet]: 144 programPoint places, 27 predicate places. [2022-07-12 10:05:38,247 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 144 transitions, 782 flow [2022-07-12 10:05:38,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.57142857142857) internal successors, (746), 7 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:05:38,248 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:05:38,248 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] [2022-07-12 10:05:38,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 10:05:38,249 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)] === [2022-07-12 10:05:38,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:05:38,249 INFO L85 PathProgramCache]: Analyzing trace with hash -810611399, now seen corresponding path program 1 times [2022-07-12 10:05:38,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:05:38,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138385863] [2022-07-12 10:05:38,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:05:38,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:05:38,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:05:38,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:05:38,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:05:38,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138385863] [2022-07-12 10:05:38,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138385863] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:05:38,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:05:38,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:05:38,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79652607] [2022-07-12 10:05:38,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:05:38,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:05:38,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:05:38,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:05:38,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:05:38,389 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 137 [2022-07-12 10:05:38,390 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 144 transitions, 782 flow. Second operand has 7 states, 7 states have (on average 106.71428571428571) internal successors, (747), 7 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:05:38,390 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:05:38,390 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 137 [2022-07-12 10:05:38,390 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:05:41,059 INFO L129 PetriNetUnfolder]: 9343/16657 cut-off events. [2022-07-12 10:05:41,059 INFO L130 PetriNetUnfolder]: For 77032/77123 co-relation queries the response was YES. [2022-07-12 10:05:41,146 INFO L84 FinitePrefix]: Finished finitePrefix Result has 61134 conditions, 16657 events. 9343/16657 cut-off events. For 77032/77123 co-relation queries the response was YES. Maximal size of possible extension queue 772. Compared 133795 event pairs, 2038 based on Foata normal form. 271/16448 useless extension candidates. Maximal degree in co-relation 61031. Up to 4348 conditions per place. [2022-07-12 10:05:41,194 INFO L132 encePairwiseOnDemand]: 123/137 looper letters, 56 selfloop transitions, 33 changer transitions 92/268 dead transitions. [2022-07-12 10:05:41,195 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 268 transitions, 2057 flow [2022-07-12 10:05:41,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 10:05:41,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-12 10:05:41,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1498 transitions. [2022-07-12 10:05:41,198 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.841100505334082 [2022-07-12 10:05:41,198 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1498 transitions. [2022-07-12 10:05:41,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1498 transitions. [2022-07-12 10:05:41,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:05:41,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1498 transitions. [2022-07-12 10:05:41,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 115.23076923076923) internal successors, (1498), 13 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:05:41,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:05:41,204 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:05:41,204 INFO L186 Difference]: Start difference. First operand has 171 places, 144 transitions, 782 flow. Second operand 13 states and 1498 transitions. [2022-07-12 10:05:41,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 268 transitions, 2057 flow [2022-07-12 10:05:41,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 268 transitions, 1929 flow, removed 64 selfloop flow, removed 6 redundant places. [2022-07-12 10:05:41,505 INFO L242 Difference]: Finished difference. Result has 180 places, 150 transitions, 980 flow [2022-07-12 10:05:41,505 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=720, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=980, PETRI_PLACES=180, PETRI_TRANSITIONS=150} [2022-07-12 10:05:41,506 INFO L279 CegarLoopForPetriNet]: 144 programPoint places, 36 predicate places. [2022-07-12 10:05:41,506 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 150 transitions, 980 flow [2022-07-12 10:05:41,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.71428571428571) internal successors, (747), 7 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:05:41,506 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:05:41,507 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] [2022-07-12 10:05:41,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 10:05:41,507 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)] === [2022-07-12 10:05:41,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:05:41,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1616485967, now seen corresponding path program 1 times [2022-07-12 10:05:41,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:05:41,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655190753] [2022-07-12 10:05:41,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:05:41,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:05:41,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:05:41,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:05:41,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:05:41,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655190753] [2022-07-12 10:05:41,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655190753] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:05:41,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:05:41,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:05:41,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457447195] [2022-07-12 10:05:41,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:05:41,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:05:41,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:05:41,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:05:41,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:05:41,577 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 137 [2022-07-12 10:05:41,578 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 150 transitions, 980 flow. Second operand has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:05:41,578 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:05:41,578 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 137 [2022-07-12 10:05:41,578 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:05:48,268 INFO L129 PetriNetUnfolder]: 29329/51397 cut-off events. [2022-07-12 10:05:48,268 INFO L130 PetriNetUnfolder]: For 133114/154241 co-relation queries the response was YES. [2022-07-12 10:05:48,785 INFO L84 FinitePrefix]: Finished finitePrefix Result has 128632 conditions, 51397 events. 29329/51397 cut-off events. For 133114/154241 co-relation queries the response was YES. Maximal size of possible extension queue 2902. Compared 491529 event pairs, 3162 based on Foata normal form. 448/49398 useless extension candidates. Maximal degree in co-relation 128521. Up to 16642 conditions per place. [2022-07-12 10:05:48,903 INFO L132 encePairwiseOnDemand]: 126/137 looper letters, 109 selfloop transitions, 20 changer transitions 0/253 dead transitions. [2022-07-12 10:05:48,903 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 253 transitions, 1898 flow [2022-07-12 10:05:48,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 10:05:48,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-12 10:05:48,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1207 transitions. [2022-07-12 10:05:48,906 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.881021897810219 [2022-07-12 10:05:48,906 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1207 transitions. [2022-07-12 10:05:48,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1207 transitions. [2022-07-12 10:05:48,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:05:48,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1207 transitions. [2022-07-12 10:05:48,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 120.7) internal successors, (1207), 10 states have internal predecessors, (1207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:05:48,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 137.0) internal successors, (1507), 11 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:05:48,911 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 137.0) internal successors, (1507), 11 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:05:48,911 INFO L186 Difference]: Start difference. First operand has 180 places, 150 transitions, 980 flow. Second operand 10 states and 1207 transitions. [2022-07-12 10:05:48,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 253 transitions, 1898 flow [2022-07-12 10:05:49,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 253 transitions, 1816 flow, removed 41 selfloop flow, removed 12 redundant places. [2022-07-12 10:05:49,029 INFO L242 Difference]: Finished difference. Result has 174 places, 168 transitions, 1083 flow [2022-07-12 10:05:49,029 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=940, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1083, PETRI_PLACES=174, PETRI_TRANSITIONS=168} [2022-07-12 10:05:49,030 INFO L279 CegarLoopForPetriNet]: 144 programPoint places, 30 predicate places. [2022-07-12 10:05:49,030 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 168 transitions, 1083 flow [2022-07-12 10:05:49,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:05:49,030 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:05:49,031 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] [2022-07-12 10:05:49,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 10:05:49,031 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)] === [2022-07-12 10:05:49,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:05:49,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1486953259, now seen corresponding path program 1 times [2022-07-12 10:05:49,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:05:49,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315230215] [2022-07-12 10:05:49,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:05:49,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:05:49,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:05:49,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:05:49,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:05:49,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315230215] [2022-07-12 10:05:49,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315230215] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:05:49,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:05:49,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:05:49,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546300372] [2022-07-12 10:05:49,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:05:49,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:05:49,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:05:49,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:05:49,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:05:49,125 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 137 [2022-07-12 10:05:49,125 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 168 transitions, 1083 flow. Second operand has 7 states, 7 states have (on average 107.0) internal successors, (749), 7 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:05:49,126 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:05:49,126 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 137 [2022-07-12 10:05:49,126 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:05:53,361 INFO L129 PetriNetUnfolder]: 11647/29807 cut-off events. [2022-07-12 10:05:53,361 INFO L130 PetriNetUnfolder]: For 106284/110974 co-relation queries the response was YES. [2022-07-12 10:05:53,621 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96292 conditions, 29807 events. 11647/29807 cut-off events. For 106284/110974 co-relation queries the response was YES. Maximal size of possible extension queue 1963. Compared 365023 event pairs, 3359 based on Foata normal form. 610/28274 useless extension candidates. Maximal degree in co-relation 96180. Up to 5458 conditions per place. [2022-07-12 10:05:53,738 INFO L132 encePairwiseOnDemand]: 123/137 looper letters, 130 selfloop transitions, 48 changer transitions 0/283 dead transitions. [2022-07-12 10:05:53,738 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 283 transitions, 2393 flow [2022-07-12 10:05:53,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 10:05:53,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-12 10:05:53,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1492 transitions. [2022-07-12 10:05:53,742 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8377316114542392 [2022-07-12 10:05:53,742 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1492 transitions. [2022-07-12 10:05:53,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1492 transitions. [2022-07-12 10:05:53,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:05:53,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1492 transitions. [2022-07-12 10:05:53,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 114.76923076923077) internal successors, (1492), 13 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:05:53,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:05:53,871 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:05:53,871 INFO L186 Difference]: Start difference. First operand has 174 places, 168 transitions, 1083 flow. Second operand 13 states and 1492 transitions. [2022-07-12 10:05:53,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 283 transitions, 2393 flow [2022-07-12 10:05:54,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 283 transitions, 2336 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-12 10:05:54,238 INFO L242 Difference]: Finished difference. Result has 196 places, 194 transitions, 1678 flow [2022-07-12 10:05:54,239 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=1051, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1678, PETRI_PLACES=196, PETRI_TRANSITIONS=194} [2022-07-12 10:05:54,239 INFO L279 CegarLoopForPetriNet]: 144 programPoint places, 52 predicate places. [2022-07-12 10:05:54,239 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 194 transitions, 1678 flow [2022-07-12 10:05:54,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 107.0) internal successors, (749), 7 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:05:54,240 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:05:54,240 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] [2022-07-12 10:05:54,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 10:05:54,240 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)] === [2022-07-12 10:05:54,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:05:54,241 INFO L85 PathProgramCache]: Analyzing trace with hash 104766417, now seen corresponding path program 1 times [2022-07-12 10:05:54,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:05:54,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287685198] [2022-07-12 10:05:54,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:05:54,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:05:54,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:05:54,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:05:54,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:05:54,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287685198] [2022-07-12 10:05:54,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287685198] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:05:54,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:05:54,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:05:54,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695921284] [2022-07-12 10:05:54,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:05:54,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:05:54,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:05:54,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:05:54,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:05:54,345 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 137 [2022-07-12 10:05:54,346 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 194 transitions, 1678 flow. Second operand has 7 states, 7 states have (on average 112.0) internal successors, (784), 7 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:05:54,346 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:05:54,346 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 137 [2022-07-12 10:05:54,346 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:06:04,797 INFO L129 PetriNetUnfolder]: 39666/71777 cut-off events. [2022-07-12 10:06:04,797 INFO L130 PetriNetUnfolder]: For 278617/304516 co-relation queries the response was YES. [2022-07-12 10:06:05,603 INFO L84 FinitePrefix]: Finished finitePrefix Result has 240695 conditions, 71777 events. 39666/71777 cut-off events. For 278617/304516 co-relation queries the response was YES. Maximal size of possible extension queue 4300. Compared 750837 event pairs, 2036 based on Foata normal form. 1856/71947 useless extension candidates. Maximal degree in co-relation 240572. Up to 15500 conditions per place. [2022-07-12 10:06:05,716 INFO L132 encePairwiseOnDemand]: 126/137 looper letters, 138 selfloop transitions, 38 changer transitions 17/336 dead transitions. [2022-07-12 10:06:05,717 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 336 transitions, 3343 flow [2022-07-12 10:06:05,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 10:06:05,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-12 10:06:05,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1574 transitions. [2022-07-12 10:06:05,720 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8837731611454239 [2022-07-12 10:06:05,720 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1574 transitions. [2022-07-12 10:06:05,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1574 transitions. [2022-07-12 10:06:05,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:06:05,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1574 transitions. [2022-07-12 10:06:05,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 121.07692307692308) internal successors, (1574), 13 states have internal predecessors, (1574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:06:05,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:06:05,909 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:06:05,910 INFO L186 Difference]: Start difference. First operand has 196 places, 194 transitions, 1678 flow. Second operand 13 states and 1574 transitions. [2022-07-12 10:06:05,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 336 transitions, 3343 flow [2022-07-12 10:06:08,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 336 transitions, 3247 flow, removed 48 selfloop flow, removed 0 redundant places. [2022-07-12 10:06:08,981 INFO L242 Difference]: Finished difference. Result has 214 places, 207 transitions, 1744 flow [2022-07-12 10:06:08,982 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=1582, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1744, PETRI_PLACES=214, PETRI_TRANSITIONS=207} [2022-07-12 10:06:08,982 INFO L279 CegarLoopForPetriNet]: 144 programPoint places, 70 predicate places. [2022-07-12 10:06:08,982 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 207 transitions, 1744 flow [2022-07-12 10:06:08,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 112.0) internal successors, (784), 7 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:06:08,983 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:06:08,983 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] [2022-07-12 10:06:08,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 10:06:08,984 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:06:08,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:06:08,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1471762996, now seen corresponding path program 1 times [2022-07-12 10:06:08,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:06:08,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396326132] [2022-07-12 10:06:08,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:06:08,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:06:09,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:06:09,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:06:09,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:06:09,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396326132] [2022-07-12 10:06:09,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396326132] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:06:09,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:06:09,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:06:09,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324948496] [2022-07-12 10:06:09,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:06:09,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:06:09,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:06:09,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:06:09,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:06:09,084 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 137 [2022-07-12 10:06:09,084 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 207 transitions, 1744 flow. Second operand has 7 states, 7 states have (on average 105.57142857142857) internal successors, (739), 7 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:06:09,084 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:06:09,084 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 137 [2022-07-12 10:06:09,085 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand