./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe035_power.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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/safe035_power.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 6415bffc70cf05f8f6460106962f2f9c59b321fd2fc94a45894cc3c1f3d85b66 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 21:50:35,750 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 21:50:35,760 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 21:50:35,811 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 21:50:35,812 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 21:50:35,813 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 21:50:35,814 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 21:50:35,816 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 21:50:35,818 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 21:50:35,821 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 21:50:35,822 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 21:50:35,824 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 21:50:35,824 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 21:50:35,826 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 21:50:35,826 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 21:50:35,829 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 21:50:35,829 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 21:50:35,831 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 21:50:35,832 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 21:50:35,836 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 21:50:35,837 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 21:50:35,838 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 21:50:35,839 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 21:50:35,839 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 21:50:35,841 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 21:50:35,844 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 21:50:35,844 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 21:50:35,845 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 21:50:35,846 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 21:50:35,846 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 21:50:35,847 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 21:50:35,847 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 21:50:35,848 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 21:50:35,849 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 21:50:35,849 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 21:50:35,850 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 21:50:35,850 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 21:50:35,851 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 21:50:35,851 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 21:50:35,851 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 21:50:35,852 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 21:50:35,854 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 21:50:35,854 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 21:50:35,879 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 21:50:35,879 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 21:50:35,879 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 21:50:35,880 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 21:50:35,881 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 21:50:35,881 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 21:50:35,881 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 21:50:35,882 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 21:50:35,882 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 21:50:35,882 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 21:50:35,883 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 21:50:35,883 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 21:50:35,883 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 21:50:35,883 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 21:50:35,883 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 21:50:35,883 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 21:50:35,884 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 21:50:35,884 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 21:50:35,884 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 21:50:35,884 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 21:50:35,884 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 21:50:35,885 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 21:50:35,885 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 21:50:35,885 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 21:50:35,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:50:35,886 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 21:50:35,886 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 21:50:35,886 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 21:50:35,886 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 21:50:35,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 21:50:35,887 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 21:50:35,887 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 21:50:35,887 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 21:50:35,887 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6415bffc70cf05f8f6460106962f2f9c59b321fd2fc94a45894cc3c1f3d85b66 [2022-07-13 21:50:36,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 21:50:36,081 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 21:50:36,083 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 21:50:36,083 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 21:50:36,084 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 21:50:36,085 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe035_power.i [2022-07-13 21:50:36,146 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/785c8d5f0/1f74179dd6bb4479b2d68a4c40d4a7cb/FLAGdc62cd589 [2022-07-13 21:50:36,475 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 21:50:36,476 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe035_power.i [2022-07-13 21:50:36,487 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/785c8d5f0/1f74179dd6bb4479b2d68a4c40d4a7cb/FLAGdc62cd589 [2022-07-13 21:50:36,852 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/785c8d5f0/1f74179dd6bb4479b2d68a4c40d4a7cb [2022-07-13 21:50:36,853 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 21:50:36,854 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 21:50:36,855 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 21:50:36,867 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 21:50:36,869 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 21:50:36,870 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:50:36" (1/1) ... [2022-07-13 21:50:36,871 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25de2245 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:36, skipping insertion in model container [2022-07-13 21:50:36,871 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:50:36" (1/1) ... [2022-07-13 21:50:36,875 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 21:50:36,919 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 21:50:37,105 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/safe035_power.i[947,960] [2022-07-13 21:50:37,300 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:50:37,308 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 21:50:37,318 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/safe035_power.i[947,960] [2022-07-13 21:50:37,378 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:50:37,405 INFO L208 MainTranslator]: Completed translation [2022-07-13 21:50:37,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:37 WrapperNode [2022-07-13 21:50:37,406 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 21:50:37,407 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 21:50:37,407 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 21:50:37,407 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 21:50:37,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:37" (1/1) ... [2022-07-13 21:50:37,437 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:37" (1/1) ... [2022-07-13 21:50:37,476 INFO L137 Inliner]: procedures = 176, calls = 60, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 484 [2022-07-13 21:50:37,478 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 21:50:37,479 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 21:50:37,479 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 21:50:37,479 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 21:50:37,484 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:37" (1/1) ... [2022-07-13 21:50:37,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:37" (1/1) ... [2022-07-13 21:50:37,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:37" (1/1) ... [2022-07-13 21:50:37,496 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:37" (1/1) ... [2022-07-13 21:50:37,509 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:37" (1/1) ... [2022-07-13 21:50:37,525 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:37" (1/1) ... [2022-07-13 21:50:37,528 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:37" (1/1) ... [2022-07-13 21:50:37,537 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 21:50:37,538 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 21:50:37,543 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 21:50:37,543 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 21:50:37,544 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:37" (1/1) ... [2022-07-13 21:50:37,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:50:37,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:50:37,601 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) [2022-07-13 21:50:37,615 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 [2022-07-13 21:50:37,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 21:50:37,632 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-13 21:50:37,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 21:50:37,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 21:50:37,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 21:50:37,633 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-07-13 21:50:37,633 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-07-13 21:50:37,633 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-07-13 21:50:37,633 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-07-13 21:50:37,633 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-07-13 21:50:37,633 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-07-13 21:50:37,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 21:50:37,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-13 21:50:37,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 21:50:37,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 21:50:37,635 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-13 21:50:37,729 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 21:50:37,730 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 21:50:38,406 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 21:50:38,964 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 21:50:38,964 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 21:50:38,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:50:38 BoogieIcfgContainer [2022-07-13 21:50:38,966 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 21:50:39,002 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 21:50:39,002 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 21:50:39,005 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 21:50:39,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 09:50:36" (1/3) ... [2022-07-13 21:50:39,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2212cb74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:50:39, skipping insertion in model container [2022-07-13 21:50:39,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:37" (2/3) ... [2022-07-13 21:50:39,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2212cb74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:50:39, skipping insertion in model container [2022-07-13 21:50:39,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:50:38" (3/3) ... [2022-07-13 21:50:39,007 INFO L111 eAbstractionObserver]: Analyzing ICFG safe035_power.i [2022-07-13 21:50:39,011 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-13 21:50:39,040 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 21:50:39,041 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 21:50:39,041 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-13 21:50:39,100 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-13 21:50:39,123 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 127 places, 119 transitions, 253 flow [2022-07-13 21:50:39,152 INFO L129 PetriNetUnfolder]: 2/116 cut-off events. [2022-07-13 21:50:39,152 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-13 21:50:39,154 INFO L84 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 116 events. 2/116 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 64 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 76. Up to 2 conditions per place. [2022-07-13 21:50:39,155 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 119 transitions, 253 flow [2022-07-13 21:50:39,158 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 124 places, 116 transitions, 241 flow [2022-07-13 21:50:39,164 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:50:39,169 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@24f135a6, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@101c2806 [2022-07-13 21:50:39,169 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-07-13 21:50:39,179 INFO L129 PetriNetUnfolder]: 0/77 cut-off events. [2022-07-13 21:50:39,180 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-13 21:50:39,180 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:50:39,181 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] [2022-07-13 21:50:39,181 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-13 21:50:39,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:50:39,185 INFO L85 PathProgramCache]: Analyzing trace with hash 159138810, now seen corresponding path program 1 times [2022-07-13 21:50:39,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:50:39,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759861168] [2022-07-13 21:50:39,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:50:39,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:50:39,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:50:39,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:50:39,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:50:39,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759861168] [2022-07-13 21:50:39,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759861168] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:50:39,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:50:39,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 21:50:39,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85720892] [2022-07-13 21:50:39,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:50:39,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:50:39,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:50:39,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:50:39,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:50:39,434 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 119 [2022-07-13 21:50:39,438 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 116 transitions, 241 flow. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:39,438 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:50:39,439 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 119 [2022-07-13 21:50:39,439 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:50:39,938 INFO L129 PetriNetUnfolder]: 359/1823 cut-off events. [2022-07-13 21:50:39,938 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-07-13 21:50:39,945 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2415 conditions, 1823 events. 359/1823 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 15996 event pairs, 131 based on Foata normal form. 92/1812 useless extension candidates. Maximal degree in co-relation 2362. Up to 445 conditions per place. [2022-07-13 21:50:39,962 INFO L132 encePairwiseOnDemand]: 114/119 looper letters, 20 selfloop transitions, 2 changer transitions 0/119 dead transitions. [2022-07-13 21:50:39,962 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 119 transitions, 291 flow [2022-07-13 21:50:39,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:50:39,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 21:50:39,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 327 transitions. [2022-07-13 21:50:39,972 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9159663865546218 [2022-07-13 21:50:39,973 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 327 transitions. [2022-07-13 21:50:39,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 327 transitions. [2022-07-13 21:50:39,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:50:39,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 327 transitions. [2022-07-13 21:50:39,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:39,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:39,982 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:39,984 INFO L186 Difference]: Start difference. First operand has 124 places, 116 transitions, 241 flow. Second operand 3 states and 327 transitions. [2022-07-13 21:50:39,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 119 transitions, 291 flow [2022-07-13 21:50:39,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 119 transitions, 288 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-13 21:50:39,988 INFO L242 Difference]: Finished difference. Result has 121 places, 112 transitions, 234 flow [2022-07-13 21:50:39,990 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=121, PETRI_TRANSITIONS=112} [2022-07-13 21:50:39,992 INFO L279 CegarLoopForPetriNet]: 124 programPoint places, -3 predicate places. [2022-07-13 21:50:39,992 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 112 transitions, 234 flow [2022-07-13 21:50:39,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:39,993 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:50:39,993 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] [2022-07-13 21:50:39,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 21:50:39,993 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-13 21:50:39,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:50:39,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1597697283, now seen corresponding path program 1 times [2022-07-13 21:50:39,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:50:39,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487837995] [2022-07-13 21:50:39,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:50:39,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:50:40,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:50:40,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:50:40,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:50:40,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487837995] [2022-07-13 21:50:40,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487837995] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:50:40,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:50:40,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:50:40,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290975930] [2022-07-13 21:50:40,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:50:40,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:50:40,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:50:40,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:50:40,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:50:40,186 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 119 [2022-07-13 21:50:40,187 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 112 transitions, 234 flow. Second operand has 6 states, 6 states have (on average 95.83333333333333) internal successors, (575), 6 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:40,187 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:50:40,187 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 119 [2022-07-13 21:50:40,188 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:50:40,778 INFO L129 PetriNetUnfolder]: 1143/2848 cut-off events. [2022-07-13 21:50:40,779 INFO L130 PetriNetUnfolder]: For 84/84 co-relation queries the response was YES. [2022-07-13 21:50:40,783 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4692 conditions, 2848 events. 1143/2848 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 22055 event pairs, 206 based on Foata normal form. 0/2781 useless extension candidates. Maximal degree in co-relation 4639. Up to 561 conditions per place. [2022-07-13 21:50:40,787 INFO L132 encePairwiseOnDemand]: 113/119 looper letters, 24 selfloop transitions, 2 changer transitions 63/169 dead transitions. [2022-07-13 21:50:40,788 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 169 transitions, 510 flow [2022-07-13 21:50:40,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 21:50:40,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-13 21:50:40,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 926 transitions. [2022-07-13 21:50:40,791 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8646125116713352 [2022-07-13 21:50:40,791 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 926 transitions. [2022-07-13 21:50:40,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 926 transitions. [2022-07-13 21:50:40,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:50:40,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 926 transitions. [2022-07-13 21:50:40,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 102.88888888888889) internal successors, (926), 9 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:40,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 119.0) internal successors, (1190), 10 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:40,797 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 119.0) internal successors, (1190), 10 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:40,797 INFO L186 Difference]: Start difference. First operand has 121 places, 112 transitions, 234 flow. Second operand 9 states and 926 transitions. [2022-07-13 21:50:40,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 169 transitions, 510 flow [2022-07-13 21:50:40,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 169 transitions, 500 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-13 21:50:40,800 INFO L242 Difference]: Finished difference. Result has 134 places, 100 transitions, 226 flow [2022-07-13 21:50:40,800 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=226, PETRI_PLACES=134, PETRI_TRANSITIONS=100} [2022-07-13 21:50:40,801 INFO L279 CegarLoopForPetriNet]: 124 programPoint places, 10 predicate places. [2022-07-13 21:50:40,801 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 100 transitions, 226 flow [2022-07-13 21:50:40,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 95.83333333333333) internal successors, (575), 6 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:40,802 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:50:40,802 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] [2022-07-13 21:50:40,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 21:50:40,802 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-13 21:50:40,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:50:40,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1540814522, now seen corresponding path program 1 times [2022-07-13 21:50:40,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:50:40,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218033170] [2022-07-13 21:50:40,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:50:40,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:50:40,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:50:41,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:50:41,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:50:41,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218033170] [2022-07-13 21:50:41,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218033170] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:50:41,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:50:41,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:50:41,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027051097] [2022-07-13 21:50:41,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:50:41,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:50:41,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:50:41,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:50:41,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:50:41,010 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 119 [2022-07-13 21:50:41,011 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 100 transitions, 226 flow. Second operand has 7 states, 7 states have (on average 92.42857142857143) internal successors, (647), 7 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:41,011 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:50:41,011 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 119 [2022-07-13 21:50:41,012 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:50:41,665 INFO L129 PetriNetUnfolder]: 1189/2301 cut-off events. [2022-07-13 21:50:41,665 INFO L130 PetriNetUnfolder]: For 478/478 co-relation queries the response was YES. [2022-07-13 21:50:41,672 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4722 conditions, 2301 events. 1189/2301 cut-off events. For 478/478 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 14137 event pairs, 463 based on Foata normal form. 47/2261 useless extension candidates. Maximal degree in co-relation 4659. Up to 1134 conditions per place. [2022-07-13 21:50:41,680 INFO L132 encePairwiseOnDemand]: 105/119 looper letters, 26 selfloop transitions, 15 changer transitions 49/166 dead transitions. [2022-07-13 21:50:41,680 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 166 transitions, 559 flow [2022-07-13 21:50:41,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 21:50:41,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-13 21:50:41,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 992 transitions. [2022-07-13 21:50:41,684 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8336134453781513 [2022-07-13 21:50:41,684 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 992 transitions. [2022-07-13 21:50:41,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 992 transitions. [2022-07-13 21:50:41,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:50:41,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 992 transitions. [2022-07-13 21:50:41,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 99.2) internal successors, (992), 10 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:41,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 119.0) internal successors, (1309), 11 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:41,690 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 119.0) internal successors, (1309), 11 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:41,690 INFO L186 Difference]: Start difference. First operand has 134 places, 100 transitions, 226 flow. Second operand 10 states and 992 transitions. [2022-07-13 21:50:41,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 166 transitions, 559 flow [2022-07-13 21:50:41,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 166 transitions, 525 flow, removed 14 selfloop flow, removed 8 redundant places. [2022-07-13 21:50:41,706 INFO L242 Difference]: Finished difference. Result has 125 places, 114 transitions, 328 flow [2022-07-13 21:50:41,706 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=328, PETRI_PLACES=125, PETRI_TRANSITIONS=114} [2022-07-13 21:50:41,708 INFO L279 CegarLoopForPetriNet]: 124 programPoint places, 1 predicate places. [2022-07-13 21:50:41,708 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 114 transitions, 328 flow [2022-07-13 21:50:41,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 92.42857142857143) internal successors, (647), 7 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:41,709 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:50:41,709 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] [2022-07-13 21:50:41,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 21:50:41,709 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-13 21:50:41,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:50:41,710 INFO L85 PathProgramCache]: Analyzing trace with hash 2103791456, now seen corresponding path program 2 times [2022-07-13 21:50:41,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:50:41,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489911827] [2022-07-13 21:50:41,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:50:41,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:50:41,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:50:41,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:50:41,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:50:41,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489911827] [2022-07-13 21:50:41,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489911827] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:50:41,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:50:41,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 21:50:41,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664612246] [2022-07-13 21:50:41,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:50:41,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 21:50:41,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:50:41,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 21:50:41,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:50:41,988 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 119 [2022-07-13 21:50:41,988 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 114 transitions, 328 flow. Second operand has 9 states, 9 states have (on average 90.11111111111111) internal successors, (811), 9 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:41,989 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:50:41,989 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 119 [2022-07-13 21:50:41,989 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:50:42,647 INFO L129 PetriNetUnfolder]: 1238/2387 cut-off events. [2022-07-13 21:50:42,648 INFO L130 PetriNetUnfolder]: For 3954/8090 co-relation queries the response was YES. [2022-07-13 21:50:42,654 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7758 conditions, 2387 events. 1238/2387 cut-off events. For 3954/8090 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 14887 event pairs, 403 based on Foata normal form. 53/2353 useless extension candidates. Maximal degree in co-relation 7692. Up to 1129 conditions per place. [2022-07-13 21:50:42,664 INFO L132 encePairwiseOnDemand]: 105/119 looper letters, 29 selfloop transitions, 26 changer transitions 49/178 dead transitions. [2022-07-13 21:50:42,664 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 178 transitions, 887 flow [2022-07-13 21:50:42,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 21:50:42,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-13 21:50:42,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1062 transitions. [2022-07-13 21:50:42,667 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8113063407181055 [2022-07-13 21:50:42,667 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1062 transitions. [2022-07-13 21:50:42,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1062 transitions. [2022-07-13 21:50:42,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:50:42,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1062 transitions. [2022-07-13 21:50:42,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 96.54545454545455) internal successors, (1062), 11 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:42,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 119.0) internal successors, (1428), 12 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:42,671 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 119.0) internal successors, (1428), 12 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:42,671 INFO L186 Difference]: Start difference. First operand has 125 places, 114 transitions, 328 flow. Second operand 11 states and 1062 transitions. [2022-07-13 21:50:42,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 178 transitions, 887 flow [2022-07-13 21:50:42,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 178 transitions, 873 flow, removed 7 selfloop flow, removed 3 redundant places. [2022-07-13 21:50:42,679 INFO L242 Difference]: Finished difference. Result has 134 places, 126 transitions, 503 flow [2022-07-13 21:50:42,679 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=503, PETRI_PLACES=134, PETRI_TRANSITIONS=126} [2022-07-13 21:50:42,680 INFO L279 CegarLoopForPetriNet]: 124 programPoint places, 10 predicate places. [2022-07-13 21:50:42,680 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 126 transitions, 503 flow [2022-07-13 21:50:42,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 90.11111111111111) internal successors, (811), 9 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:42,680 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:50:42,681 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] [2022-07-13 21:50:42,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 21:50:42,681 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-13 21:50:42,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:50:42,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1885551681, now seen corresponding path program 1 times [2022-07-13 21:50:42,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:50:42,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653938014] [2022-07-13 21:50:42,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:50:42,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:50:42,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:50:43,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:50:43,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:50:43,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653938014] [2022-07-13 21:50:43,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653938014] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:50:43,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:50:43,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-13 21:50:43,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338651651] [2022-07-13 21:50:43,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:50:43,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-13 21:50:43,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:50:43,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-13 21:50:43,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-07-13 21:50:43,303 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 119 [2022-07-13 21:50:43,304 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 126 transitions, 503 flow. Second operand has 15 states, 15 states have (on average 85.6) internal successors, (1284), 15 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:43,304 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:50:43,304 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 119 [2022-07-13 21:50:43,304 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:50:45,010 INFO L129 PetriNetUnfolder]: 1103/2171 cut-off events. [2022-07-13 21:50:45,010 INFO L130 PetriNetUnfolder]: For 9534/13715 co-relation queries the response was YES. [2022-07-13 21:50:45,018 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9275 conditions, 2171 events. 1103/2171 cut-off events. For 9534/13715 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 13221 event pairs, 379 based on Foata normal form. 35/2082 useless extension candidates. Maximal degree in co-relation 9198. Up to 1415 conditions per place. [2022-07-13 21:50:45,030 INFO L132 encePairwiseOnDemand]: 98/119 looper letters, 55 selfloop transitions, 69 changer transitions 45/239 dead transitions. [2022-07-13 21:50:45,030 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 239 transitions, 1751 flow [2022-07-13 21:50:45,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-13 21:50:45,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-13 21:50:45,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1715 transitions. [2022-07-13 21:50:45,034 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7585139318885449 [2022-07-13 21:50:45,034 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1715 transitions. [2022-07-13 21:50:45,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1715 transitions. [2022-07-13 21:50:45,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:50:45,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1715 transitions. [2022-07-13 21:50:45,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 90.26315789473684) internal successors, (1715), 19 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:45,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 119.0) internal successors, (2380), 20 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:45,040 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 119.0) internal successors, (2380), 20 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:45,040 INFO L186 Difference]: Start difference. First operand has 134 places, 126 transitions, 503 flow. Second operand 19 states and 1715 transitions. [2022-07-13 21:50:45,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 239 transitions, 1751 flow [2022-07-13 21:50:45,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 239 transitions, 1512 flow, removed 119 selfloop flow, removed 7 redundant places. [2022-07-13 21:50:45,053 INFO L242 Difference]: Finished difference. Result has 149 places, 190 transitions, 1178 flow [2022-07-13 21:50:45,054 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1178, PETRI_PLACES=149, PETRI_TRANSITIONS=190} [2022-07-13 21:50:45,055 INFO L279 CegarLoopForPetriNet]: 124 programPoint places, 25 predicate places. [2022-07-13 21:50:45,056 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 190 transitions, 1178 flow [2022-07-13 21:50:45,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 85.6) internal successors, (1284), 15 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:45,057 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:50:45,057 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] [2022-07-13 21:50:45,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 21:50:45,058 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-13 21:50:45,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:50:45,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1613135911, now seen corresponding path program 2 times [2022-07-13 21:50:45,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:50:45,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789831211] [2022-07-13 21:50:45,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:50:45,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:50:45,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:50:45,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:50:45,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:50:45,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789831211] [2022-07-13 21:50:45,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789831211] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:50:45,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:50:45,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-13 21:50:45,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420479084] [2022-07-13 21:50:45,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:50:45,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 21:50:45,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:50:45,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 21:50:45,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-07-13 21:50:45,414 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 119 [2022-07-13 21:50:45,415 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 190 transitions, 1178 flow. Second operand has 12 states, 12 states have (on average 87.83333333333333) internal successors, (1054), 12 states have internal predecessors, (1054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:45,415 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:50:45,415 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 119 [2022-07-13 21:50:45,416 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:50:46,717 INFO L129 PetriNetUnfolder]: 1766/3357 cut-off events. [2022-07-13 21:50:46,718 INFO L130 PetriNetUnfolder]: For 15511/65699 co-relation queries the response was YES. [2022-07-13 21:50:46,732 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15927 conditions, 3357 events. 1766/3357 cut-off events. For 15511/65699 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 22607 event pairs, 345 based on Foata normal form. 92/3336 useless extension candidates. Maximal degree in co-relation 15842. Up to 1642 conditions per place. [2022-07-13 21:50:46,747 INFO L132 encePairwiseOnDemand]: 104/119 looper letters, 103 selfloop transitions, 41 changer transitions 75/291 dead transitions. [2022-07-13 21:50:46,747 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 291 transitions, 2529 flow [2022-07-13 21:50:46,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 21:50:46,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-13 21:50:46,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1232 transitions. [2022-07-13 21:50:46,750 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7963800904977375 [2022-07-13 21:50:46,751 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1232 transitions. [2022-07-13 21:50:46,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1232 transitions. [2022-07-13 21:50:46,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:50:46,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1232 transitions. [2022-07-13 21:50:46,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 94.76923076923077) internal successors, (1232), 13 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:46,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 119.0) internal successors, (1666), 14 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:46,755 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 119.0) internal successors, (1666), 14 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:46,755 INFO L186 Difference]: Start difference. First operand has 149 places, 190 transitions, 1178 flow. Second operand 13 states and 1232 transitions. [2022-07-13 21:50:46,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 291 transitions, 2529 flow [2022-07-13 21:50:46,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 291 transitions, 2367 flow, removed 77 selfloop flow, removed 7 redundant places. [2022-07-13 21:50:46,781 INFO L242 Difference]: Finished difference. Result has 156 places, 185 transitions, 1138 flow [2022-07-13 21:50:46,781 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=1062, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1138, PETRI_PLACES=156, PETRI_TRANSITIONS=185} [2022-07-13 21:50:46,782 INFO L279 CegarLoopForPetriNet]: 124 programPoint places, 32 predicate places. [2022-07-13 21:50:46,782 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 185 transitions, 1138 flow [2022-07-13 21:50:46,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 87.83333333333333) internal successors, (1054), 12 states have internal predecessors, (1054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:46,783 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:50:46,783 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] [2022-07-13 21:50:46,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 21:50:46,783 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-13 21:50:46,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:50:46,784 INFO L85 PathProgramCache]: Analyzing trace with hash 836580793, now seen corresponding path program 1 times [2022-07-13 21:50:46,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:50:46,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784123300] [2022-07-13 21:50:46,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:50:46,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:50:46,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:50:46,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:50:46,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:50:46,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784123300] [2022-07-13 21:50:46,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784123300] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:50:46,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:50:46,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-13 21:50:46,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220898016] [2022-07-13 21:50:46,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:50:46,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 21:50:46,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:50:46,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 21:50:46,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-07-13 21:50:46,943 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 119 [2022-07-13 21:50:46,944 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 185 transitions, 1138 flow. Second operand has 12 states, 12 states have (on average 88.75) internal successors, (1065), 12 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:46,944 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:50:46,944 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 119 [2022-07-13 21:50:46,944 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:50:48,170 INFO L129 PetriNetUnfolder]: 1689/3293 cut-off events. [2022-07-13 21:50:48,170 INFO L130 PetriNetUnfolder]: For 17966/46458 co-relation queries the response was YES. [2022-07-13 21:50:48,182 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16214 conditions, 3293 events. 1689/3293 cut-off events. For 17966/46458 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 22525 event pairs, 205 based on Foata normal form. 119/3313 useless extension candidates. Maximal degree in co-relation 16126. Up to 1658 conditions per place. [2022-07-13 21:50:48,195 INFO L132 encePairwiseOnDemand]: 101/119 looper letters, 130 selfloop transitions, 44 changer transitions 68/315 dead transitions. [2022-07-13 21:50:48,195 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 315 transitions, 2749 flow [2022-07-13 21:50:48,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-13 21:50:48,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-13 21:50:48,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1799 transitions. [2022-07-13 21:50:48,199 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7956656346749226 [2022-07-13 21:50:48,199 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1799 transitions. [2022-07-13 21:50:48,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1799 transitions. [2022-07-13 21:50:48,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:50:48,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1799 transitions. [2022-07-13 21:50:48,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 94.6842105263158) internal successors, (1799), 19 states have internal predecessors, (1799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:48,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 119.0) internal successors, (2380), 20 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:48,206 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 119.0) internal successors, (2380), 20 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:48,206 INFO L186 Difference]: Start difference. First operand has 156 places, 185 transitions, 1138 flow. Second operand 19 states and 1799 transitions. [2022-07-13 21:50:48,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 315 transitions, 2749 flow [2022-07-13 21:50:48,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 315 transitions, 2581 flow, removed 51 selfloop flow, removed 10 redundant places. [2022-07-13 21:50:48,242 INFO L242 Difference]: Finished difference. Result has 167 places, 183 transitions, 1184 flow [2022-07-13 21:50:48,243 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=1055, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1184, PETRI_PLACES=167, PETRI_TRANSITIONS=183} [2022-07-13 21:50:48,243 INFO L279 CegarLoopForPetriNet]: 124 programPoint places, 43 predicate places. [2022-07-13 21:50:48,243 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 183 transitions, 1184 flow [2022-07-13 21:50:48,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 88.75) internal successors, (1065), 12 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:48,244 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:50:48,244 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] [2022-07-13 21:50:48,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 21:50:48,244 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-13 21:50:48,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:50:48,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1676887911, now seen corresponding path program 2 times [2022-07-13 21:50:48,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:50:48,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902963015] [2022-07-13 21:50:48,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:50:48,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:50:48,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:50:48,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:50:48,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:50:48,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902963015] [2022-07-13 21:50:48,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902963015] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:50:48,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:50:48,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:50:48,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065199832] [2022-07-13 21:50:48,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:50:48,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:50:48,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:50:48,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:50:48,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:50:48,327 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 119 [2022-07-13 21:50:48,328 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 183 transitions, 1184 flow. Second operand has 6 states, 6 states have (on average 92.5) internal successors, (555), 6 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:48,328 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:50:48,328 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 119 [2022-07-13 21:50:48,328 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:50:50,251 INFO L129 PetriNetUnfolder]: 6768/12405 cut-off events. [2022-07-13 21:50:50,251 INFO L130 PetriNetUnfolder]: For 115595/115955 co-relation queries the response was YES. [2022-07-13 21:50:50,299 INFO L84 FinitePrefix]: Finished finitePrefix Result has 57319 conditions, 12405 events. 6768/12405 cut-off events. For 115595/115955 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 101493 event pairs, 351 based on Foata normal form. 208/12419 useless extension candidates. Maximal degree in co-relation 57233. Up to 3727 conditions per place. [2022-07-13 21:50:50,327 INFO L132 encePairwiseOnDemand]: 109/119 looper letters, 141 selfloop transitions, 7 changer transitions 184/420 dead transitions. [2022-07-13 21:50:50,327 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 420 transitions, 4256 flow [2022-07-13 21:50:50,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 21:50:50,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-13 21:50:50,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1022 transitions. [2022-07-13 21:50:50,330 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8588235294117647 [2022-07-13 21:50:50,330 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1022 transitions. [2022-07-13 21:50:50,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1022 transitions. [2022-07-13 21:50:50,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:50:50,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1022 transitions. [2022-07-13 21:50:50,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 102.2) internal successors, (1022), 10 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:50,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 119.0) internal successors, (1309), 11 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:50,334 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 119.0) internal successors, (1309), 11 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:50,335 INFO L186 Difference]: Start difference. First operand has 167 places, 183 transitions, 1184 flow. Second operand 10 states and 1022 transitions. [2022-07-13 21:50:50,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 420 transitions, 4256 flow [2022-07-13 21:50:50,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 420 transitions, 3922 flow, removed 98 selfloop flow, removed 11 redundant places. [2022-07-13 21:50:50,412 INFO L242 Difference]: Finished difference. Result has 163 places, 168 transitions, 988 flow [2022-07-13 21:50:50,413 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=942, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=988, PETRI_PLACES=163, PETRI_TRANSITIONS=168} [2022-07-13 21:50:50,415 INFO L279 CegarLoopForPetriNet]: 124 programPoint places, 39 predicate places. [2022-07-13 21:50:50,415 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 168 transitions, 988 flow [2022-07-13 21:50:50,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 92.5) internal successors, (555), 6 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:50,415 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:50:50,416 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] [2022-07-13 21:50:50,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 21:50:50,416 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-13 21:50:50,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:50:50,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1139462990, now seen corresponding path program 1 times [2022-07-13 21:50:50,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:50:50,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414090811] [2022-07-13 21:50:50,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:50:50,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:50:50,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:50:50,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:50:50,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:50:50,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414090811] [2022-07-13 21:50:50,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414090811] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:50:50,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:50:50,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:50:50,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617132478] [2022-07-13 21:50:50,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:50:50,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:50:50,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:50:50,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:50:50,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:50:50,520 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 119 [2022-07-13 21:50:50,520 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 168 transitions, 988 flow. Second operand has 7 states, 7 states have (on average 92.42857142857143) internal successors, (647), 7 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:50,521 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:50:50,521 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 119 [2022-07-13 21:50:50,521 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:50:51,730 INFO L129 PetriNetUnfolder]: 2880/6286 cut-off events. [2022-07-13 21:50:51,731 INFO L130 PetriNetUnfolder]: For 45688/45801 co-relation queries the response was YES. [2022-07-13 21:50:51,753 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29500 conditions, 6286 events. 2880/6286 cut-off events. For 45688/45801 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 54003 event pairs, 347 based on Foata normal form. 239/6512 useless extension candidates. Maximal degree in co-relation 29413. Up to 1724 conditions per place. [2022-07-13 21:50:51,765 INFO L132 encePairwiseOnDemand]: 109/119 looper letters, 135 selfloop transitions, 18 changer transitions 94/334 dead transitions. [2022-07-13 21:50:51,765 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 334 transitions, 3191 flow [2022-07-13 21:50:51,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 21:50:51,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-13 21:50:51,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1126 transitions. [2022-07-13 21:50:51,768 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8601986249045073 [2022-07-13 21:50:51,768 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1126 transitions. [2022-07-13 21:50:51,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1126 transitions. [2022-07-13 21:50:51,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:50:51,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1126 transitions. [2022-07-13 21:50:51,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 102.36363636363636) internal successors, (1126), 11 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:51,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 119.0) internal successors, (1428), 12 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:51,773 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 119.0) internal successors, (1428), 12 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:51,773 INFO L186 Difference]: Start difference. First operand has 163 places, 168 transitions, 988 flow. Second operand 11 states and 1126 transitions. [2022-07-13 21:50:51,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 334 transitions, 3191 flow [2022-07-13 21:50:51,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 334 transitions, 3175 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-07-13 21:50:51,819 INFO L242 Difference]: Finished difference. Result has 171 places, 169 transitions, 1049 flow [2022-07-13 21:50:51,819 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=898, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1049, PETRI_PLACES=171, PETRI_TRANSITIONS=169} [2022-07-13 21:50:51,820 INFO L279 CegarLoopForPetriNet]: 124 programPoint places, 47 predicate places. [2022-07-13 21:50:51,820 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 169 transitions, 1049 flow [2022-07-13 21:50:51,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 92.42857142857143) internal successors, (647), 7 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:51,821 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:50:51,821 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] [2022-07-13 21:50:51,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 21:50:51,821 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-13 21:50:51,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:50:51,822 INFO L85 PathProgramCache]: Analyzing trace with hash 436664984, now seen corresponding path program 1 times [2022-07-13 21:50:51,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:50:51,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300523709] [2022-07-13 21:50:51,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:50:51,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:50:51,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:50:52,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:50:52,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:50:52,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300523709] [2022-07-13 21:50:52,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300523709] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:50:52,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:50:52,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-13 21:50:52,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366512236] [2022-07-13 21:50:52,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:50:52,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-13 21:50:52,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:50:52,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-13 21:50:52,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-07-13 21:50:52,200 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 119 [2022-07-13 21:50:52,201 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 169 transitions, 1049 flow. Second operand has 15 states, 15 states have (on average 87.66666666666667) internal successors, (1315), 15 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:52,202 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:50:52,202 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 119 [2022-07-13 21:50:52,202 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:50:53,109 INFO L129 PetriNetUnfolder]: 791/3601 cut-off events. [2022-07-13 21:50:53,109 INFO L130 PetriNetUnfolder]: For 14818/15864 co-relation queries the response was YES. [2022-07-13 21:50:53,132 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14062 conditions, 3601 events. 791/3601 cut-off events. For 14818/15864 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 40008 event pairs, 85 based on Foata normal form. 18/3426 useless extension candidates. Maximal degree in co-relation 13963. Up to 874 conditions per place. [2022-07-13 21:50:53,141 INFO L132 encePairwiseOnDemand]: 104/119 looper letters, 81 selfloop transitions, 20 changer transitions 33/225 dead transitions. [2022-07-13 21:50:53,142 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 225 transitions, 1985 flow [2022-07-13 21:50:53,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 21:50:53,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-13 21:50:53,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1111 transitions. [2022-07-13 21:50:53,157 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7780112044817927 [2022-07-13 21:50:53,157 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1111 transitions. [2022-07-13 21:50:53,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1111 transitions. [2022-07-13 21:50:53,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:50:53,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1111 transitions. [2022-07-13 21:50:53,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 92.58333333333333) internal successors, (1111), 12 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:53,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 119.0) internal successors, (1547), 13 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:53,162 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 119.0) internal successors, (1547), 13 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:53,162 INFO L186 Difference]: Start difference. First operand has 171 places, 169 transitions, 1049 flow. Second operand 12 states and 1111 transitions. [2022-07-13 21:50:53,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 225 transitions, 1985 flow [2022-07-13 21:50:53,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 225 transitions, 1871 flow, removed 24 selfloop flow, removed 6 redundant places. [2022-07-13 21:50:53,323 INFO L242 Difference]: Finished difference. Result has 183 places, 181 transitions, 1183 flow [2022-07-13 21:50:53,324 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=953, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1183, PETRI_PLACES=183, PETRI_TRANSITIONS=181} [2022-07-13 21:50:53,325 INFO L279 CegarLoopForPetriNet]: 124 programPoint places, 59 predicate places. [2022-07-13 21:50:53,325 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 181 transitions, 1183 flow [2022-07-13 21:50:53,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 87.66666666666667) internal successors, (1315), 15 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:53,339 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:50:53,339 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] [2022-07-13 21:50:53,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 21:50:53,340 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-13 21:50:53,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:50:53,340 INFO L85 PathProgramCache]: Analyzing trace with hash 663213080, now seen corresponding path program 2 times [2022-07-13 21:50:53,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:50:53,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568796281] [2022-07-13 21:50:53,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:50:53,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:50:53,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:50:54,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:50:54,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:50:54,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568796281] [2022-07-13 21:50:54,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568796281] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:50:54,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:50:54,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-07-13 21:50:54,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701110234] [2022-07-13 21:50:54,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:50:54,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-13 21:50:54,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:50:54,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-13 21:50:54,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:50:54,014 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 119 [2022-07-13 21:50:54,015 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 181 transitions, 1183 flow. Second operand has 17 states, 17 states have (on average 85.58823529411765) internal successors, (1455), 17 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:54,015 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:50:54,015 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 119 [2022-07-13 21:50:54,015 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:50:55,177 INFO L129 PetriNetUnfolder]: 937/4507 cut-off events. [2022-07-13 21:50:55,178 INFO L130 PetriNetUnfolder]: For 16243/16527 co-relation queries the response was YES. [2022-07-13 21:50:55,207 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15943 conditions, 4507 events. 937/4507 cut-off events. For 16243/16527 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 53214 event pairs, 96 based on Foata normal form. 33/4325 useless extension candidates. Maximal degree in co-relation 15834. Up to 606 conditions per place. [2022-07-13 21:50:55,217 INFO L132 encePairwiseOnDemand]: 102/119 looper letters, 74 selfloop transitions, 42 changer transitions 35/240 dead transitions. [2022-07-13 21:50:55,217 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 240 transitions, 2305 flow [2022-07-13 21:50:55,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 21:50:55,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-13 21:50:55,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1435 transitions. [2022-07-13 21:50:55,220 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7536764705882353 [2022-07-13 21:50:55,220 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1435 transitions. [2022-07-13 21:50:55,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1435 transitions. [2022-07-13 21:50:55,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:50:55,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1435 transitions. [2022-07-13 21:50:55,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 89.6875) internal successors, (1435), 16 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:55,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 119.0) internal successors, (2023), 17 states have internal predecessors, (2023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:55,227 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 119.0) internal successors, (2023), 17 states have internal predecessors, (2023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:55,227 INFO L186 Difference]: Start difference. First operand has 183 places, 181 transitions, 1183 flow. Second operand 16 states and 1435 transitions. [2022-07-13 21:50:55,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 240 transitions, 2305 flow [2022-07-13 21:50:55,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 240 transitions, 2236 flow, removed 32 selfloop flow, removed 6 redundant places. [2022-07-13 21:50:55,280 INFO L242 Difference]: Finished difference. Result has 198 places, 194 transitions, 1496 flow [2022-07-13 21:50:55,280 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=1122, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1496, PETRI_PLACES=198, PETRI_TRANSITIONS=194} [2022-07-13 21:50:55,281 INFO L279 CegarLoopForPetriNet]: 124 programPoint places, 74 predicate places. [2022-07-13 21:50:55,281 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 194 transitions, 1496 flow [2022-07-13 21:50:55,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 85.58823529411765) internal successors, (1455), 17 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:55,282 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:50:55,282 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] [2022-07-13 21:50:55,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 21:50:55,282 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-13 21:50:55,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:50:55,282 INFO L85 PathProgramCache]: Analyzing trace with hash 309575666, now seen corresponding path program 3 times [2022-07-13 21:50:55,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:50:55,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554658336] [2022-07-13 21:50:55,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:50:55,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:50:55,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:50:55,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:50:55,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:50:55,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554658336] [2022-07-13 21:50:55,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554658336] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:50:55,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:50:55,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-13 21:50:55,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819896992] [2022-07-13 21:50:55,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:50:55,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-13 21:50:55,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:50:55,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-13 21:50:55,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:50:55,753 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 119 [2022-07-13 21:50:55,764 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 194 transitions, 1496 flow. Second operand has 16 states, 16 states have (on average 84.75) internal successors, (1356), 16 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:55,764 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:50:55,764 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 119 [2022-07-13 21:50:55,765 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:50:56,604 INFO L129 PetriNetUnfolder]: 836/4049 cut-off events. [2022-07-13 21:50:56,605 INFO L130 PetriNetUnfolder]: For 18865/19108 co-relation queries the response was YES. [2022-07-13 21:50:56,634 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15255 conditions, 4049 events. 836/4049 cut-off events. For 18865/19108 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 46822 event pairs, 112 based on Foata normal form. 22/3872 useless extension candidates. Maximal degree in co-relation 15136. Up to 501 conditions per place. [2022-07-13 21:50:56,644 INFO L132 encePairwiseOnDemand]: 105/119 looper letters, 78 selfloop transitions, 32 changer transitions 30/228 dead transitions. [2022-07-13 21:50:56,644 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 228 transitions, 2349 flow [2022-07-13 21:50:56,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 21:50:56,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-13 21:50:56,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 988 transitions. [2022-07-13 21:50:56,646 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7547746371275783 [2022-07-13 21:50:56,646 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 988 transitions. [2022-07-13 21:50:56,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 988 transitions. [2022-07-13 21:50:56,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:50:56,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 988 transitions. [2022-07-13 21:50:56,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 89.81818181818181) internal successors, (988), 11 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:56,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 119.0) internal successors, (1428), 12 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:56,650 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 119.0) internal successors, (1428), 12 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:56,650 INFO L186 Difference]: Start difference. First operand has 198 places, 194 transitions, 1496 flow. Second operand 11 states and 988 transitions. [2022-07-13 21:50:56,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 228 transitions, 2349 flow [2022-07-13 21:50:56,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 228 transitions, 2230 flow, removed 56 selfloop flow, removed 11 redundant places. [2022-07-13 21:50:56,700 INFO L242 Difference]: Finished difference. Result has 194 places, 189 transitions, 1431 flow [2022-07-13 21:50:56,701 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=1423, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1431, PETRI_PLACES=194, PETRI_TRANSITIONS=189} [2022-07-13 21:50:56,701 INFO L279 CegarLoopForPetriNet]: 124 programPoint places, 70 predicate places. [2022-07-13 21:50:56,701 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 189 transitions, 1431 flow [2022-07-13 21:50:56,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 84.75) internal successors, (1356), 16 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:56,702 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:50:56,702 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] [2022-07-13 21:50:56,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 21:50:56,702 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-13 21:50:56,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:50:56,703 INFO L85 PathProgramCache]: Analyzing trace with hash 747727608, now seen corresponding path program 4 times [2022-07-13 21:50:56,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:50:56,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802968705] [2022-07-13 21:50:56,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:50:56,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:50:56,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:50:56,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:50:56,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:50:56,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802968705] [2022-07-13 21:50:56,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802968705] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:50:56,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:50:56,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 21:50:56,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290566940] [2022-07-13 21:50:56,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:50:56,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 21:50:56,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:50:56,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 21:50:56,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:50:56,808 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 119 [2022-07-13 21:50:56,808 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 189 transitions, 1431 flow. Second operand has 8 states, 8 states have (on average 92.5) internal successors, (740), 8 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:56,808 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:50:56,808 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 119 [2022-07-13 21:50:56,808 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:50:58,040 INFO L129 PetriNetUnfolder]: 2792/6664 cut-off events. [2022-07-13 21:50:58,040 INFO L130 PetriNetUnfolder]: For 66023/66144 co-relation queries the response was YES. [2022-07-13 21:50:58,079 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34128 conditions, 6664 events. 2792/6664 cut-off events. For 66023/66144 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 63294 event pairs, 349 based on Foata normal form. 108/6758 useless extension candidates. Maximal degree in co-relation 34073. Up to 1455 conditions per place. [2022-07-13 21:50:58,104 INFO L132 encePairwiseOnDemand]: 109/119 looper letters, 150 selfloop transitions, 22 changer transitions 117/379 dead transitions. [2022-07-13 21:50:58,104 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 379 transitions, 4516 flow [2022-07-13 21:50:58,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:50:58,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-13 21:50:58,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1375 transitions. [2022-07-13 21:50:58,106 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8253301320528211 [2022-07-13 21:50:58,106 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1375 transitions. [2022-07-13 21:50:58,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1375 transitions. [2022-07-13 21:50:58,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:50:58,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1375 transitions. [2022-07-13 21:50:58,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 98.21428571428571) internal successors, (1375), 14 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:58,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 119.0) internal successors, (1785), 15 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:58,110 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 119.0) internal successors, (1785), 15 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:58,110 INFO L186 Difference]: Start difference. First operand has 194 places, 189 transitions, 1431 flow. Second operand 14 states and 1375 transitions. [2022-07-13 21:50:58,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 379 transitions, 4516 flow [2022-07-13 21:50:58,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 379 transitions, 4020 flow, removed 149 selfloop flow, removed 14 redundant places. [2022-07-13 21:50:58,231 INFO L242 Difference]: Finished difference. Result has 197 places, 189 transitions, 1334 flow [2022-07-13 21:50:58,231 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=1246, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1334, PETRI_PLACES=197, PETRI_TRANSITIONS=189} [2022-07-13 21:50:58,232 INFO L279 CegarLoopForPetriNet]: 124 programPoint places, 73 predicate places. [2022-07-13 21:50:58,232 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 189 transitions, 1334 flow [2022-07-13 21:50:58,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 92.5) internal successors, (740), 8 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:58,232 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:50:58,232 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] [2022-07-13 21:50:58,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 21:50:58,233 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-13 21:50:58,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:50:58,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1332442293, now seen corresponding path program 1 times [2022-07-13 21:50:58,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:50:58,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606194002] [2022-07-13 21:50:58,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:50:58,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:50:58,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:50:58,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:50:58,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:50:58,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606194002] [2022-07-13 21:50:58,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606194002] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:50:58,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:50:58,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-13 21:50:58,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464145020] [2022-07-13 21:50:58,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:50:58,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-13 21:50:58,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:50:58,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-13 21:50:58,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-07-13 21:50:58,581 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 119 [2022-07-13 21:50:58,581 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 189 transitions, 1334 flow. Second operand has 15 states, 15 states have (on average 87.86666666666666) internal successors, (1318), 15 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:58,581 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:50:58,581 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 119 [2022-07-13 21:50:58,582 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:50:59,674 INFO L129 PetriNetUnfolder]: 862/4983 cut-off events. [2022-07-13 21:50:59,675 INFO L130 PetriNetUnfolder]: For 19218/19707 co-relation queries the response was YES. [2022-07-13 21:50:59,706 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17936 conditions, 4983 events. 862/4983 cut-off events. For 19218/19707 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 65297 event pairs, 49 based on Foata normal form. 5/4712 useless extension candidates. Maximal degree in co-relation 17824. Up to 670 conditions per place. [2022-07-13 21:50:59,714 INFO L132 encePairwiseOnDemand]: 102/119 looper letters, 75 selfloop transitions, 30 changer transitions 52/249 dead transitions. [2022-07-13 21:50:59,714 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 249 transitions, 2353 flow [2022-07-13 21:50:59,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 21:50:59,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 21:50:59,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1629 transitions. [2022-07-13 21:50:59,717 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7605042016806722 [2022-07-13 21:50:59,717 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1629 transitions. [2022-07-13 21:50:59,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1629 transitions. [2022-07-13 21:50:59,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:50:59,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1629 transitions. [2022-07-13 21:50:59,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 90.5) internal successors, (1629), 18 states have internal predecessors, (1629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:59,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 119.0) internal successors, (2261), 19 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:59,722 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 119.0) internal successors, (2261), 19 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:59,722 INFO L186 Difference]: Start difference. First operand has 197 places, 189 transitions, 1334 flow. Second operand 18 states and 1629 transitions. [2022-07-13 21:50:59,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 249 transitions, 2353 flow [2022-07-13 21:50:59,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 249 transitions, 2010 flow, removed 138 selfloop flow, removed 20 redundant places. [2022-07-13 21:50:59,891 INFO L242 Difference]: Finished difference. Result has 200 places, 185 transitions, 1214 flow [2022-07-13 21:50:59,891 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=1158, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1214, PETRI_PLACES=200, PETRI_TRANSITIONS=185} [2022-07-13 21:50:59,892 INFO L279 CegarLoopForPetriNet]: 124 programPoint places, 76 predicate places. [2022-07-13 21:50:59,892 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 185 transitions, 1214 flow [2022-07-13 21:50:59,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 87.86666666666666) internal successors, (1318), 15 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:59,893 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:50:59,893 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] [2022-07-13 21:50:59,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 21:50:59,893 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-13 21:50:59,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:50:59,894 INFO L85 PathProgramCache]: Analyzing trace with hash -320443777, now seen corresponding path program 2 times [2022-07-13 21:50:59,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:50:59,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247359410] [2022-07-13 21:50:59,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:50:59,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:51:00,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:51:00,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:51:00,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:51:00,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247359410] [2022-07-13 21:51:00,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247359410] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:51:00,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:51:00,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 21:51:00,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695806330] [2022-07-13 21:51:00,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:51:00,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 21:51:00,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:51:00,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 21:51:00,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 21:51:00,113 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 119 [2022-07-13 21:51:00,114 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 185 transitions, 1214 flow. Second operand has 10 states, 10 states have (on average 90.6) internal successors, (906), 10 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:51:00,114 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:51:00,114 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 119 [2022-07-13 21:51:00,114 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:51:00,849 INFO L129 PetriNetUnfolder]: 618/3815 cut-off events. [2022-07-13 21:51:00,849 INFO L130 PetriNetUnfolder]: For 7408/7493 co-relation queries the response was YES. [2022-07-13 21:51:00,876 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11419 conditions, 3815 events. 618/3815 cut-off events. For 7408/7493 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 47898 event pairs, 32 based on Foata normal form. 2/3615 useless extension candidates. Maximal degree in co-relation 11374. Up to 392 conditions per place. [2022-07-13 21:51:00,884 INFO L132 encePairwiseOnDemand]: 106/119 looper letters, 77 selfloop transitions, 32 changer transitions 48/251 dead transitions. [2022-07-13 21:51:00,884 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 251 transitions, 2165 flow [2022-07-13 21:51:00,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 21:51:00,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-13 21:51:00,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 939 transitions. [2022-07-13 21:51:00,886 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7890756302521008 [2022-07-13 21:51:00,886 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 939 transitions. [2022-07-13 21:51:00,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 939 transitions. [2022-07-13 21:51:00,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:51:00,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 939 transitions. [2022-07-13 21:51:00,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.9) internal successors, (939), 10 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:51:00,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 119.0) internal successors, (1309), 11 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:51:00,888 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 119.0) internal successors, (1309), 11 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:51:00,888 INFO L186 Difference]: Start difference. First operand has 200 places, 185 transitions, 1214 flow. Second operand 10 states and 939 transitions. [2022-07-13 21:51:00,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 251 transitions, 2165 flow [2022-07-13 21:51:00,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 251 transitions, 2031 flow, removed 47 selfloop flow, removed 17 redundant places. [2022-07-13 21:51:00,953 INFO L242 Difference]: Finished difference. Result has 192 places, 196 transitions, 1390 flow [2022-07-13 21:51:00,953 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=1141, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1390, PETRI_PLACES=192, PETRI_TRANSITIONS=196} [2022-07-13 21:51:00,954 INFO L279 CegarLoopForPetriNet]: 124 programPoint places, 68 predicate places. [2022-07-13 21:51:00,954 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 196 transitions, 1390 flow [2022-07-13 21:51:00,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 90.6) internal successors, (906), 10 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:51:00,954 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:51:00,954 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] [2022-07-13 21:51:00,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 21:51:00,954 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-13 21:51:00,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:51:00,955 INFO L85 PathProgramCache]: Analyzing trace with hash -679533185, now seen corresponding path program 3 times [2022-07-13 21:51:00,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:51:00,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464882445] [2022-07-13 21:51:00,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:51:00,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:51:01,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:51:01,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:51:01,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:51:01,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464882445] [2022-07-13 21:51:01,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464882445] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:51:01,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:51:01,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-13 21:51:01,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060785059] [2022-07-13 21:51:01,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:51:01,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-13 21:51:01,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:51:01,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-13 21:51:01,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-07-13 21:51:01,307 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 119 [2022-07-13 21:51:01,308 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 196 transitions, 1390 flow. Second operand has 13 states, 13 states have (on average 88.15384615384616) internal successors, (1146), 13 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:51:01,308 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:51:01,308 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 119 [2022-07-13 21:51:01,308 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:51:02,044 INFO L129 PetriNetUnfolder]: 594/3620 cut-off events. [2022-07-13 21:51:02,044 INFO L130 PetriNetUnfolder]: For 6886/6971 co-relation queries the response was YES. [2022-07-13 21:51:02,068 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10656 conditions, 3620 events. 594/3620 cut-off events. For 6886/6971 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 44995 event pairs, 24 based on Foata normal form. 2/3422 useless extension candidates. Maximal degree in co-relation 10614. Up to 422 conditions per place. [2022-07-13 21:51:02,074 INFO L132 encePairwiseOnDemand]: 106/119 looper letters, 82 selfloop transitions, 31 changer transitions 34/239 dead transitions. [2022-07-13 21:51:02,075 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 239 transitions, 2155 flow [2022-07-13 21:51:02,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 21:51:02,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-13 21:51:02,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1100 transitions. [2022-07-13 21:51:02,076 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7703081232492998 [2022-07-13 21:51:02,077 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1100 transitions. [2022-07-13 21:51:02,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1100 transitions. [2022-07-13 21:51:02,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:51:02,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1100 transitions. [2022-07-13 21:51:02,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 91.66666666666667) internal successors, (1100), 12 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:51:02,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 119.0) internal successors, (1547), 13 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:51:02,080 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 119.0) internal successors, (1547), 13 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:51:02,081 INFO L186 Difference]: Start difference. First operand has 192 places, 196 transitions, 1390 flow. Second operand 12 states and 1100 transitions. [2022-07-13 21:51:02,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 239 transitions, 2155 flow [2022-07-13 21:51:02,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 239 transitions, 2120 flow, removed 17 selfloop flow, removed 5 redundant places. [2022-07-13 21:51:02,139 INFO L242 Difference]: Finished difference. Result has 200 places, 195 transitions, 1487 flow [2022-07-13 21:51:02,140 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=1367, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1487, PETRI_PLACES=200, PETRI_TRANSITIONS=195} [2022-07-13 21:51:02,140 INFO L279 CegarLoopForPetriNet]: 124 programPoint places, 76 predicate places. [2022-07-13 21:51:02,140 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 195 transitions, 1487 flow [2022-07-13 21:51:02,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 88.15384615384616) internal successors, (1146), 13 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:51:02,141 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:51:02,141 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] [2022-07-13 21:51:02,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 21:51:02,141 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-13 21:51:02,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:51:02,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1566745033, now seen corresponding path program 4 times [2022-07-13 21:51:02,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:51:02,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945639565] [2022-07-13 21:51:02,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:51:02,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:51:02,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:51:02,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:51:02,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:51:02,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945639565] [2022-07-13 21:51:02,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945639565] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:51:02,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:51:02,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:51:02,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089172346] [2022-07-13 21:51:02,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:51:02,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:51:02,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:51:02,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:51:02,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:51:02,294 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 119 [2022-07-13 21:51:02,294 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 195 transitions, 1487 flow. Second operand has 7 states, 7 states have (on average 94.28571428571429) internal successors, (660), 7 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:51:02,295 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:51:02,295 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 119 [2022-07-13 21:51:02,295 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:51:02,864 INFO L129 PetriNetUnfolder]: 597/3441 cut-off events. [2022-07-13 21:51:02,864 INFO L130 PetriNetUnfolder]: For 9583/9675 co-relation queries the response was YES. [2022-07-13 21:51:02,884 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10909 conditions, 3441 events. 597/3441 cut-off events. For 9583/9675 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 41202 event pairs, 33 based on Foata normal form. 4/3269 useless extension candidates. Maximal degree in co-relation 10864. Up to 342 conditions per place. [2022-07-13 21:51:02,888 INFO L132 encePairwiseOnDemand]: 113/119 looper letters, 46 selfloop transitions, 1 changer transitions 93/239 dead transitions. [2022-07-13 21:51:02,888 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 239 transitions, 2260 flow [2022-07-13 21:51:02,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:51:02,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-13 21:51:02,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 683 transitions. [2022-07-13 21:51:02,889 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8199279711884754 [2022-07-13 21:51:02,889 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 683 transitions. [2022-07-13 21:51:02,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 683 transitions. [2022-07-13 21:51:02,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:51:02,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 683 transitions. [2022-07-13 21:51:02,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 97.57142857142857) internal successors, (683), 7 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:51:02,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:51:02,891 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:51:02,891 INFO L186 Difference]: Start difference. First operand has 200 places, 195 transitions, 1487 flow. Second operand 7 states and 683 transitions. [2022-07-13 21:51:02,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 239 transitions, 2260 flow [2022-07-13 21:51:02,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 239 transitions, 2128 flow, removed 31 selfloop flow, removed 12 redundant places. [2022-07-13 21:51:02,942 INFO L242 Difference]: Finished difference. Result has 194 places, 141 transitions, 804 flow [2022-07-13 21:51:02,942 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=1403, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=804, PETRI_PLACES=194, PETRI_TRANSITIONS=141} [2022-07-13 21:51:02,942 INFO L279 CegarLoopForPetriNet]: 124 programPoint places, 70 predicate places. [2022-07-13 21:51:02,943 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 141 transitions, 804 flow [2022-07-13 21:51:02,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 94.28571428571429) internal successors, (660), 7 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:51:02,943 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:51:02,943 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] [2022-07-13 21:51:02,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 21:51:02,943 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-13 21:51:02,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:51:02,943 INFO L85 PathProgramCache]: Analyzing trace with hash -509438613, now seen corresponding path program 5 times [2022-07-13 21:51:02,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:51:02,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86803516] [2022-07-13 21:51:02,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:51:02,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:51:03,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:51:03,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:51:03,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:51:03,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86803516] [2022-07-13 21:51:03,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86803516] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:51:03,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:51:03,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 21:51:03,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926964122] [2022-07-13 21:51:03,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:51:03,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 21:51:03,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:51:03,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 21:51:03,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-07-13 21:51:03,370 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 119 [2022-07-13 21:51:03,370 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 141 transitions, 804 flow. Second operand has 14 states, 14 states have (on average 87.07142857142857) internal successors, (1219), 14 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:51:03,371 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:51:03,371 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 119 [2022-07-13 21:51:03,371 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:51:03,903 INFO L129 PetriNetUnfolder]: 142/1031 cut-off events. [2022-07-13 21:51:03,904 INFO L130 PetriNetUnfolder]: For 1931/1959 co-relation queries the response was YES. [2022-07-13 21:51:03,909 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2998 conditions, 1031 events. 142/1031 cut-off events. For 1931/1959 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 9189 event pairs, 11 based on Foata normal form. 5/982 useless extension candidates. Maximal degree in co-relation 2963. Up to 96 conditions per place. [2022-07-13 21:51:03,910 INFO L132 encePairwiseOnDemand]: 108/119 looper letters, 0 selfloop transitions, 0 changer transitions 145/145 dead transitions. [2022-07-13 21:51:03,910 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 145 transitions, 962 flow [2022-07-13 21:51:03,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 21:51:03,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-13 21:51:03,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1063 transitions. [2022-07-13 21:51:03,911 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7443977591036415 [2022-07-13 21:51:03,911 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1063 transitions. [2022-07-13 21:51:03,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1063 transitions. [2022-07-13 21:51:03,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:51:03,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1063 transitions. [2022-07-13 21:51:03,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 88.58333333333333) internal successors, (1063), 12 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:51:03,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 119.0) internal successors, (1547), 13 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:51:03,914 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 119.0) internal successors, (1547), 13 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:51:03,915 INFO L186 Difference]: Start difference. First operand has 194 places, 141 transitions, 804 flow. Second operand 12 states and 1063 transitions. [2022-07-13 21:51:03,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 145 transitions, 962 flow [2022-07-13 21:51:03,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 145 transitions, 849 flow, removed 20 selfloop flow, removed 23 redundant places. [2022-07-13 21:51:03,924 INFO L242 Difference]: Finished difference. Result has 174 places, 0 transitions, 0 flow [2022-07-13 21:51:03,925 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=174, PETRI_TRANSITIONS=0} [2022-07-13 21:51:03,925 INFO L279 CegarLoopForPetriNet]: 124 programPoint places, 50 predicate places. [2022-07-13 21:51:03,925 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 0 transitions, 0 flow [2022-07-13 21:51:03,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 87.07142857142857) internal successors, (1219), 14 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:51:03,927 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2022-07-13 21:51:03,928 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-07-13 21:51:03,931 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2022-07-13 21:51:03,932 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2022-07-13 21:51:03,932 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2022-07-13 21:51:03,932 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-07-13 21:51:03,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 21:51:03,932 INFO L356 BasicCegarLoop]: Path program histogram: [5, 4, 2, 2, 2, 1, 1, 1] [2022-07-13 21:51:03,937 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-13 21:51:03,937 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 21:51:03,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 09:51:03 BasicIcfg [2022-07-13 21:51:03,941 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 21:51:03,941 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 21:51:03,942 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 21:51:03,942 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 21:51:03,942 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:50:38" (3/4) ... [2022-07-13 21:51:03,944 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-13 21:51:03,954 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-07-13 21:51:03,954 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-07-13 21:51:03,954 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-07-13 21:51:03,966 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 179 nodes and edges [2022-07-13 21:51:03,966 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 42 nodes and edges [2022-07-13 21:51:03,967 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-07-13 21:51:03,967 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-13 21:51:04,010 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-13 21:51:04,027 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 21:51:04,028 INFO L158 Benchmark]: Toolchain (without parser) took 27173.32ms. Allocated memory was 146.8MB in the beginning and 2.0GB in the end (delta: 1.8GB). Free memory was 86.6MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 569.4MB. Max. memory is 16.1GB. [2022-07-13 21:51:04,028 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 146.8MB. Free memory was 104.5MB in the beginning and 104.4MB in the end (delta: 88.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 21:51:04,028 INFO L158 Benchmark]: CACSL2BoogieTranslator took 550.63ms. Allocated memory is still 146.8MB. Free memory was 86.4MB in the beginning and 102.2MB in the end (delta: -15.8MB). Peak memory consumption was 16.5MB. Max. memory is 16.1GB. [2022-07-13 21:51:04,028 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.58ms. Allocated memory is still 146.8MB. Free memory was 102.2MB in the beginning and 98.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-13 21:51:04,029 INFO L158 Benchmark]: Boogie Preprocessor took 58.76ms. Allocated memory is still 146.8MB. Free memory was 98.0MB in the beginning and 94.7MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 21:51:04,029 INFO L158 Benchmark]: RCFGBuilder took 1428.68ms. Allocated memory was 146.8MB in the beginning and 197.1MB in the end (delta: 50.3MB). Free memory was 94.4MB in the beginning and 62.0MB in the end (delta: 32.4MB). Peak memory consumption was 87.1MB. Max. memory is 16.1GB. [2022-07-13 21:51:04,029 INFO L158 Benchmark]: TraceAbstraction took 24938.99ms. Allocated memory was 197.1MB in the beginning and 2.0GB in the end (delta: 1.8GB). Free memory was 152.4MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 574.3MB. Max. memory is 16.1GB. [2022-07-13 21:51:04,029 INFO L158 Benchmark]: Witness Printer took 85.68ms. Allocated memory is still 2.0GB. Free memory was 1.3GB in the beginning and 1.3GB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 21:51:04,030 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 146.8MB. Free memory was 104.5MB in the beginning and 104.4MB in the end (delta: 88.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 550.63ms. Allocated memory is still 146.8MB. Free memory was 86.4MB in the beginning and 102.2MB in the end (delta: -15.8MB). Peak memory consumption was 16.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.58ms. Allocated memory is still 146.8MB. Free memory was 102.2MB in the beginning and 98.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.76ms. Allocated memory is still 146.8MB. Free memory was 98.0MB in the beginning and 94.7MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1428.68ms. Allocated memory was 146.8MB in the beginning and 197.1MB in the end (delta: 50.3MB). Free memory was 94.4MB in the beginning and 62.0MB in the end (delta: 32.4MB). Peak memory consumption was 87.1MB. Max. memory is 16.1GB. * TraceAbstraction took 24938.99ms. Allocated memory was 197.1MB in the beginning and 2.0GB in the end (delta: 1.8GB). Free memory was 152.4MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 574.3MB. Max. memory is 16.1GB. * Witness Printer took 85.68ms. Allocated memory is still 2.0GB. Free memory was 1.3GB in the beginning and 1.3GB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 149 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 24.8s, OverallIterations: 18, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 19.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1070 SdHoareTripleChecker+Valid, 5.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1070 mSDsluCounter, 1318 SdHoareTripleChecker+Invalid, 4.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2021 mSDsCounter, 710 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5360 IncrementalHoareTripleChecker+Invalid, 6070 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 710 mSolverCounterUnsat, 215 mSDtfsCounter, 5360 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 313 GetRequests, 39 SyntacticMatches, 5 SemanticMatches, 269 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1496occurred in iteration=11, InterpolantAutomatonStates: 217, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 1511 NumberOfCodeBlocks, 1511 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 1493 ConstructedInterpolants, 0 QuantifiedInterpolants, 9408 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-13 21:51:04,077 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE