./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/mix004.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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/mix004.opt.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 --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 89021de777f0aa5756284679b7b3bd19ab661d8d626f08ad7f7db0bc955b507d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 19:08:53,678 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 19:08:53,773 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 19:08:53,779 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 19:08:53,780 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 19:08:53,811 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 19:08:53,811 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 19:08:53,812 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 19:08:53,813 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 19:08:53,814 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 19:08:53,815 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 19:08:53,815 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 19:08:53,816 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 19:08:53,816 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 19:08:53,818 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 19:08:53,818 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 19:08:53,818 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 19:08:53,819 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 19:08:53,819 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 19:08:53,819 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 19:08:53,820 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 19:08:53,823 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 19:08:53,824 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 19:08:53,824 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 19:08:53,824 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 19:08:53,824 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 19:08:53,825 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 19:08:53,825 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 19:08:53,825 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 19:08:53,825 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 19:08:53,826 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 19:08:53,826 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 19:08:53,826 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:08:53,826 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 19:08:53,827 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 19:08:53,827 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 19:08:53,829 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 19:08:53,829 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 19:08:53,829 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 19:08:53,829 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 19:08:53,830 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 19:08:53,830 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 19:08:53,830 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89021de777f0aa5756284679b7b3bd19ab661d8d626f08ad7f7db0bc955b507d [2024-11-16 19:08:54,103 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 19:08:54,130 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 19:08:54,132 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 19:08:54,133 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 19:08:54,134 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 19:08:54,135 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix004.opt.i [2024-11-16 19:08:55,622 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 19:08:55,934 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 19:08:55,936 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix004.opt.i [2024-11-16 19:08:55,957 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c9f8c7f1/e6a5ed88641d486aa3f1c762743b3d2a/FLAGc212b4bec [2024-11-16 19:08:56,198 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c9f8c7f1/e6a5ed88641d486aa3f1c762743b3d2a [2024-11-16 19:08:56,200 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 19:08:56,202 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 19:08:56,203 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 19:08:56,203 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 19:08:56,209 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 19:08:56,209 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:08:56" (1/1) ... [2024-11-16 19:08:56,210 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@535f45de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:08:56, skipping insertion in model container [2024-11-16 19:08:56,210 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:08:56" (1/1) ... [2024-11-16 19:08:56,254 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 19:08:56,457 WARN L250 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/mix004.opt.i[944,957] [2024-11-16 19:08:56,682 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:08:56,699 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 19:08:56,709 WARN L250 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/mix004.opt.i[944,957] [2024-11-16 19:08:56,767 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:08:56,804 INFO L204 MainTranslator]: Completed translation [2024-11-16 19:08:56,805 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:08:56 WrapperNode [2024-11-16 19:08:56,805 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 19:08:56,806 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 19:08:56,807 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 19:08:56,807 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 19:08:56,813 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:08:56" (1/1) ... [2024-11-16 19:08:56,828 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:08:56" (1/1) ... [2024-11-16 19:08:56,865 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 152 [2024-11-16 19:08:56,865 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 19:08:56,866 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 19:08:56,866 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 19:08:56,867 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 19:08:56,877 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:08:56" (1/1) ... [2024-11-16 19:08:56,877 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:08:56" (1/1) ... [2024-11-16 19:08:56,881 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:08:56" (1/1) ... [2024-11-16 19:08:56,899 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-16 19:08:56,899 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:08:56" (1/1) ... [2024-11-16 19:08:56,900 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:08:56" (1/1) ... [2024-11-16 19:08:56,907 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:08:56" (1/1) ... [2024-11-16 19:08:56,908 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:08:56" (1/1) ... [2024-11-16 19:08:56,910 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:08:56" (1/1) ... [2024-11-16 19:08:56,911 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:08:56" (1/1) ... [2024-11-16 19:08:56,915 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 19:08:56,915 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 19:08:56,916 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 19:08:56,916 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 19:08:56,917 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:08:56" (1/1) ... [2024-11-16 19:08:56,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:08:56,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:08:56,960 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 19:08:56,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 19:08:57,040 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-16 19:08:57,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 19:08:57,042 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-11-16 19:08:57,042 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-11-16 19:08:57,042 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-11-16 19:08:57,042 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-11-16 19:08:57,042 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-11-16 19:08:57,042 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-11-16 19:08:57,042 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-11-16 19:08:57,068 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-11-16 19:08:57,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 19:08:57,068 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-16 19:08:57,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 19:08:57,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 19:08:57,070 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-16 19:08:57,206 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 19:08:57,208 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 19:08:57,611 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-16 19:08:57,611 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 19:08:57,881 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 19:08:57,883 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 19:08:57,883 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:08:57 BoogieIcfgContainer [2024-11-16 19:08:57,883 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 19:08:57,886 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 19:08:57,886 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 19:08:57,890 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 19:08:57,890 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:08:56" (1/3) ... [2024-11-16 19:08:57,891 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62436618 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:08:57, skipping insertion in model container [2024-11-16 19:08:57,891 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:08:56" (2/3) ... [2024-11-16 19:08:57,892 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62436618 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:08:57, skipping insertion in model container [2024-11-16 19:08:57,892 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:08:57" (3/3) ... [2024-11-16 19:08:57,894 INFO L112 eAbstractionObserver]: Analyzing ICFG mix004.opt.i [2024-11-16 19:08:57,910 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 19:08:57,911 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-16 19:08:57,911 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-16 19:08:57,970 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-16 19:08:58,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 50 transitions, 116 flow [2024-11-16 19:08:58,044 INFO L124 PetriNetUnfolderBase]: 1/46 cut-off events. [2024-11-16 19:08:58,046 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 19:08:58,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 1/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 104 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2024-11-16 19:08:58,051 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 50 transitions, 116 flow [2024-11-16 19:08:58,054 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 46 transitions, 104 flow [2024-11-16 19:08:58,068 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 19:08:58,074 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3cb07f47, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 19:08:58,074 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-16 19:08:58,089 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 19:08:58,090 INFO L124 PetriNetUnfolderBase]: 0/25 cut-off events. [2024-11-16 19:08:58,090 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 19:08:58,090 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:08:58,091 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:08:58,092 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:08:58,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:08:58,098 INFO L85 PathProgramCache]: Analyzing trace with hash 562658844, now seen corresponding path program 1 times [2024-11-16 19:08:58,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:08:58,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391474065] [2024-11-16 19:08:58,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:08:58,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:08:58,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:08:58,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:08:58,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:08:58,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391474065] [2024-11-16 19:08:58,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391474065] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:08:58,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:08:58,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-16 19:08:58,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6033086] [2024-11-16 19:08:58,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:08:58,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:08:58,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:08:58,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:08:58,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:08:58,670 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-11-16 19:08:58,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:08:58,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:08:58,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-11-16 19:08:58,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:09:05,473 INFO L124 PetriNetUnfolderBase]: 53315/70323 cut-off events. [2024-11-16 19:09:05,473 INFO L125 PetriNetUnfolderBase]: For 272/272 co-relation queries the response was YES. [2024-11-16 19:09:05,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140699 conditions, 70323 events. 53315/70323 cut-off events. For 272/272 co-relation queries the response was YES. Maximal size of possible extension queue 1961. Compared 407231 event pairs, 6875 based on Foata normal form. 1764/72030 useless extension candidates. Maximal degree in co-relation 140687. Up to 60049 conditions per place. [2024-11-16 19:09:06,059 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 58 selfloop transitions, 2 changer transitions 2/68 dead transitions. [2024-11-16 19:09:06,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 68 transitions, 272 flow [2024-11-16 19:09:06,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:09:06,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:09:06,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-11-16 19:09:06,071 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2024-11-16 19:09:06,073 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 104 flow. Second operand 3 states and 95 transitions. [2024-11-16 19:09:06,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 68 transitions, 272 flow [2024-11-16 19:09:06,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 68 transitions, 268 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-16 19:09:06,087 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 98 flow [2024-11-16 19:09:06,091 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2024-11-16 19:09:06,096 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, -3 predicate places. [2024-11-16 19:09:06,096 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 98 flow [2024-11-16 19:09:06,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:09:06,097 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:09:06,097 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:09:06,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 19:09:06,097 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:09:06,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:09:06,098 INFO L85 PathProgramCache]: Analyzing trace with hash 676846064, now seen corresponding path program 1 times [2024-11-16 19:09:06,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:09:06,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798767465] [2024-11-16 19:09:06,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:09:06,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:09:06,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:09:06,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:09:06,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:09:06,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798767465] [2024-11-16 19:09:06,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798767465] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:09:06,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:09:06,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:09:06,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636071862] [2024-11-16 19:09:06,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:09:06,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:09:06,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:09:06,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:09:06,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:09:06,460 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2024-11-16 19:09:06,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:09:06,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:09:06,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2024-11-16 19:09:06,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:09:13,008 INFO L124 PetriNetUnfolderBase]: 69203/92659 cut-off events. [2024-11-16 19:09:13,008 INFO L125 PetriNetUnfolderBase]: For 2992/2992 co-relation queries the response was YES. [2024-11-16 19:09:13,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187141 conditions, 92659 events. 69203/92659 cut-off events. For 2992/2992 co-relation queries the response was YES. Maximal size of possible extension queue 2665. Compared 572473 event pairs, 35807 based on Foata normal form. 0/90894 useless extension candidates. Maximal degree in co-relation 187131. Up to 61525 conditions per place. [2024-11-16 19:09:13,434 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 50 selfloop transitions, 5 changer transitions 88/148 dead transitions. [2024-11-16 19:09:13,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 148 transitions, 612 flow [2024-11-16 19:09:13,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 19:09:13,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-16 19:09:13,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 217 transitions. [2024-11-16 19:09:13,437 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5425 [2024-11-16 19:09:13,437 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 98 flow. Second operand 8 states and 217 transitions. [2024-11-16 19:09:13,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 148 transitions, 612 flow [2024-11-16 19:09:13,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 148 transitions, 596 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-16 19:09:13,451 INFO L231 Difference]: Finished difference. Result has 64 places, 46 transitions, 149 flow [2024-11-16 19:09:13,451 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=149, PETRI_PLACES=64, PETRI_TRANSITIONS=46} [2024-11-16 19:09:13,452 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 6 predicate places. [2024-11-16 19:09:13,452 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 46 transitions, 149 flow [2024-11-16 19:09:13,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:09:13,454 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:09:13,454 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:09:13,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 19:09:13,454 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:09:13,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:09:13,455 INFO L85 PathProgramCache]: Analyzing trace with hash -235725852, now seen corresponding path program 1 times [2024-11-16 19:09:13,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:09:13,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184954765] [2024-11-16 19:09:13,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:09:13,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:09:13,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:09:13,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:09:13,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:09:13,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184954765] [2024-11-16 19:09:13,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184954765] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:09:13,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:09:13,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:09:13,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316398685] [2024-11-16 19:09:13,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:09:13,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 19:09:13,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:09:13,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 19:09:13,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 19:09:13,651 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2024-11-16 19:09:13,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 46 transitions, 149 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:09:13,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:09:13,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2024-11-16 19:09:13,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:09:19,134 INFO L124 PetriNetUnfolderBase]: 52299/70177 cut-off events. [2024-11-16 19:09:19,135 INFO L125 PetriNetUnfolderBase]: For 52957/52957 co-relation queries the response was YES. [2024-11-16 19:09:19,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178268 conditions, 70177 events. 52299/70177 cut-off events. For 52957/52957 co-relation queries the response was YES. Maximal size of possible extension queue 1962. Compared 425531 event pairs, 10779 based on Foata normal form. 1708/71842 useless extension candidates. Maximal degree in co-relation 178253. Up to 44905 conditions per place. [2024-11-16 19:09:19,537 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 60 selfloop transitions, 3 changer transitions 79/147 dead transitions. [2024-11-16 19:09:19,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 147 transitions, 749 flow [2024-11-16 19:09:19,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 19:09:19,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-16 19:09:19,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 203 transitions. [2024-11-16 19:09:19,540 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.58 [2024-11-16 19:09:19,540 INFO L175 Difference]: Start difference. First operand has 64 places, 46 transitions, 149 flow. Second operand 7 states and 203 transitions. [2024-11-16 19:09:19,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 147 transitions, 749 flow [2024-11-16 19:09:20,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 147 transitions, 736 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-11-16 19:09:20,768 INFO L231 Difference]: Finished difference. Result has 66 places, 46 transitions, 159 flow [2024-11-16 19:09:20,768 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=159, PETRI_PLACES=66, PETRI_TRANSITIONS=46} [2024-11-16 19:09:20,769 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 8 predicate places. [2024-11-16 19:09:20,769 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 46 transitions, 159 flow [2024-11-16 19:09:20,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:09:20,770 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:09:20,770 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:09:20,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 19:09:20,770 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:09:20,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:09:20,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1214779280, now seen corresponding path program 1 times [2024-11-16 19:09:20,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:09:20,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160334485] [2024-11-16 19:09:20,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:09:20,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:09:20,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:09:20,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:09:20,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:09:20,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160334485] [2024-11-16 19:09:20,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160334485] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:09:20,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:09:20,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:09:20,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332588969] [2024-11-16 19:09:20,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:09:20,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 19:09:20,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:09:20,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 19:09:20,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 19:09:20,991 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2024-11-16 19:09:20,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 46 transitions, 159 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:09:20,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:09:20,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2024-11-16 19:09:20,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:09:25,561 INFO L124 PetriNetUnfolderBase]: 45755/61317 cut-off events. [2024-11-16 19:09:25,562 INFO L125 PetriNetUnfolderBase]: For 60575/60575 co-relation queries the response was YES. [2024-11-16 19:09:25,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159758 conditions, 61317 events. 45755/61317 cut-off events. For 60575/60575 co-relation queries the response was YES. Maximal size of possible extension queue 1563. Compared 354922 event pairs, 10095 based on Foata normal form. 1260/62534 useless extension candidates. Maximal degree in co-relation 159739. Up to 38761 conditions per place. [2024-11-16 19:09:25,913 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 58 selfloop transitions, 3 changer transitions 71/137 dead transitions. [2024-11-16 19:09:25,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 137 transitions, 702 flow [2024-11-16 19:09:25,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 19:09:25,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-16 19:09:25,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 193 transitions. [2024-11-16 19:09:25,915 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5514285714285714 [2024-11-16 19:09:25,915 INFO L175 Difference]: Start difference. First operand has 66 places, 46 transitions, 159 flow. Second operand 7 states and 193 transitions. [2024-11-16 19:09:25,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 137 transitions, 702 flow [2024-11-16 19:09:26,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 137 transitions, 678 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-11-16 19:09:26,890 INFO L231 Difference]: Finished difference. Result has 67 places, 46 transitions, 164 flow [2024-11-16 19:09:26,890 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=164, PETRI_PLACES=67, PETRI_TRANSITIONS=46} [2024-11-16 19:09:26,891 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 9 predicate places. [2024-11-16 19:09:26,891 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 46 transitions, 164 flow [2024-11-16 19:09:26,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:09:26,891 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:09:26,891 INFO L204 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] [2024-11-16 19:09:26,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 19:09:26,892 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:09:26,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:09:26,892 INFO L85 PathProgramCache]: Analyzing trace with hash -190374423, now seen corresponding path program 1 times [2024-11-16 19:09:26,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:09:26,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725258771] [2024-11-16 19:09:26,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:09:26,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:09:26,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:09:27,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:09:27,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:09:27,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725258771] [2024-11-16 19:09:27,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725258771] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:09:27,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:09:27,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:09:27,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085383377] [2024-11-16 19:09:27,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:09:27,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:09:27,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:09:27,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:09:27,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:09:27,162 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-11-16 19:09:27,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 46 transitions, 164 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:09:27,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:09:27,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-11-16 19:09:27,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:09:30,799 INFO L124 PetriNetUnfolderBase]: 36351/49377 cut-off events. [2024-11-16 19:09:30,800 INFO L125 PetriNetUnfolderBase]: For 45897/45897 co-relation queries the response was YES. [2024-11-16 19:09:30,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128271 conditions, 49377 events. 36351/49377 cut-off events. For 45897/45897 co-relation queries the response was YES. Maximal size of possible extension queue 1329. Compared 292332 event pairs, 4831 based on Foata normal form. 1764/51106 useless extension candidates. Maximal degree in co-relation 128251. Up to 26545 conditions per place. [2024-11-16 19:09:31,103 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 82 selfloop transitions, 6 changer transitions 1/94 dead transitions. [2024-11-16 19:09:31,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 94 transitions, 500 flow [2024-11-16 19:09:31,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 19:09:31,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-16 19:09:31,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2024-11-16 19:09:31,105 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.635 [2024-11-16 19:09:31,105 INFO L175 Difference]: Start difference. First operand has 67 places, 46 transitions, 164 flow. Second operand 4 states and 127 transitions. [2024-11-16 19:09:31,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 94 transitions, 500 flow [2024-11-16 19:09:31,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 94 transitions, 482 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-11-16 19:09:31,373 INFO L231 Difference]: Finished difference. Result has 62 places, 50 transitions, 192 flow [2024-11-16 19:09:31,374 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=192, PETRI_PLACES=62, PETRI_TRANSITIONS=50} [2024-11-16 19:09:31,374 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 4 predicate places. [2024-11-16 19:09:31,374 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 50 transitions, 192 flow [2024-11-16 19:09:31,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:09:31,375 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:09:31,375 INFO L204 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] [2024-11-16 19:09:31,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 19:09:31,375 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:09:31,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:09:31,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1451513436, now seen corresponding path program 1 times [2024-11-16 19:09:31,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:09:31,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832588510] [2024-11-16 19:09:31,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:09:31,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:09:31,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:09:31,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:09:31,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:09:31,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832588510] [2024-11-16 19:09:31,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832588510] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:09:31,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:09:31,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:09:31,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955842773] [2024-11-16 19:09:31,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:09:31,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:09:31,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:09:31,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:09:31,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:09:31,728 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-11-16 19:09:31,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 50 transitions, 192 flow. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:09:31,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:09:31,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-11-16 19:09:31,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:09:33,938 INFO L124 PetriNetUnfolderBase]: 24383/33505 cut-off events. [2024-11-16 19:09:33,939 INFO L125 PetriNetUnfolderBase]: For 30951/30951 co-relation queries the response was YES. [2024-11-16 19:09:34,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92885 conditions, 33505 events. 24383/33505 cut-off events. For 30951/30951 co-relation queries the response was YES. Maximal size of possible extension queue 819. Compared 190556 event pairs, 2819 based on Foata normal form. 1364/34834 useless extension candidates. Maximal degree in co-relation 92867. Up to 12289 conditions per place. [2024-11-16 19:09:34,123 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 105 selfloop transitions, 10 changer transitions 1/121 dead transitions. [2024-11-16 19:09:34,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 121 transitions, 673 flow [2024-11-16 19:09:34,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:09:34,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:09:34,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 164 transitions. [2024-11-16 19:09:34,125 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.656 [2024-11-16 19:09:34,125 INFO L175 Difference]: Start difference. First operand has 62 places, 50 transitions, 192 flow. Second operand 5 states and 164 transitions. [2024-11-16 19:09:34,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 121 transitions, 673 flow [2024-11-16 19:09:34,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 121 transitions, 662 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-16 19:09:34,134 INFO L231 Difference]: Finished difference. Result has 66 places, 54 transitions, 244 flow [2024-11-16 19:09:34,134 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=244, PETRI_PLACES=66, PETRI_TRANSITIONS=54} [2024-11-16 19:09:34,135 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 8 predicate places. [2024-11-16 19:09:34,135 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 54 transitions, 244 flow [2024-11-16 19:09:34,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:09:34,136 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:09:34,136 INFO L204 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] [2024-11-16 19:09:34,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 19:09:34,136 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:09:34,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:09:34,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1005523587, now seen corresponding path program 1 times [2024-11-16 19:09:34,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:09:34,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580470749] [2024-11-16 19:09:34,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:09:34,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:09:34,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:09:34,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:09:34,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:09:34,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580470749] [2024-11-16 19:09:34,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580470749] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:09:34,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:09:34,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:09:34,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410249334] [2024-11-16 19:09:34,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:09:34,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 19:09:34,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:09:34,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 19:09:34,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-16 19:09:34,676 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-11-16 19:09:34,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 54 transitions, 244 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:09:34,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:09:34,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-11-16 19:09:34,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:09:36,329 INFO L124 PetriNetUnfolderBase]: 15363/21145 cut-off events. [2024-11-16 19:09:36,330 INFO L125 PetriNetUnfolderBase]: For 28711/28711 co-relation queries the response was YES. [2024-11-16 19:09:36,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62433 conditions, 21145 events. 15363/21145 cut-off events. For 28711/28711 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 112679 event pairs, 2429 based on Foata normal form. 644/21754 useless extension candidates. Maximal degree in co-relation 62413. Up to 6400 conditions per place. [2024-11-16 19:09:36,449 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 126 selfloop transitions, 14 changer transitions 1/146 dead transitions. [2024-11-16 19:09:36,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 146 transitions, 862 flow [2024-11-16 19:09:36,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:09:36,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:09:36,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 199 transitions. [2024-11-16 19:09:36,450 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6633333333333333 [2024-11-16 19:09:36,450 INFO L175 Difference]: Start difference. First operand has 66 places, 54 transitions, 244 flow. Second operand 6 states and 199 transitions. [2024-11-16 19:09:36,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 146 transitions, 862 flow [2024-11-16 19:09:36,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 146 transitions, 832 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-11-16 19:09:36,602 INFO L231 Difference]: Finished difference. Result has 69 places, 58 transitions, 294 flow [2024-11-16 19:09:36,602 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=294, PETRI_PLACES=69, PETRI_TRANSITIONS=58} [2024-11-16 19:09:36,603 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 11 predicate places. [2024-11-16 19:09:36,603 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 58 transitions, 294 flow [2024-11-16 19:09:36,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:09:36,603 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:09:36,603 INFO L204 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] [2024-11-16 19:09:36,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 19:09:36,604 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:09:36,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:09:36,604 INFO L85 PathProgramCache]: Analyzing trace with hash 2104490282, now seen corresponding path program 1 times [2024-11-16 19:09:36,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:09:36,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25253881] [2024-11-16 19:09:36,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:09:36,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:09:36,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:09:36,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:09:36,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:09:36,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25253881] [2024-11-16 19:09:36,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25253881] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:09:36,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:09:36,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 19:09:36,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384407704] [2024-11-16 19:09:36,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:09:36,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 19:09:36,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:09:36,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 19:09:36,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 19:09:36,929 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2024-11-16 19:09:36,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 58 transitions, 294 flow. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:09:36,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:09:36,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2024-11-16 19:09:36,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:09:38,781 INFO L124 PetriNetUnfolderBase]: 19947/27450 cut-off events. [2024-11-16 19:09:38,781 INFO L125 PetriNetUnfolderBase]: For 39201/39201 co-relation queries the response was YES. [2024-11-16 19:09:38,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83203 conditions, 27450 events. 19947/27450 cut-off events. For 39201/39201 co-relation queries the response was YES. Maximal size of possible extension queue 710. Compared 149426 event pairs, 4909 based on Foata normal form. 112/27550 useless extension candidates. Maximal degree in co-relation 83182. Up to 16028 conditions per place. [2024-11-16 19:09:38,953 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 98 selfloop transitions, 2 changer transitions 62/167 dead transitions. [2024-11-16 19:09:38,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 167 transitions, 1171 flow [2024-11-16 19:09:38,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:09:38,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:09:38,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 180 transitions. [2024-11-16 19:09:38,954 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-11-16 19:09:38,954 INFO L175 Difference]: Start difference. First operand has 69 places, 58 transitions, 294 flow. Second operand 6 states and 180 transitions. [2024-11-16 19:09:38,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 167 transitions, 1171 flow [2024-11-16 19:09:39,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 167 transitions, 1055 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-11-16 19:09:39,185 INFO L231 Difference]: Finished difference. Result has 73 places, 59 transitions, 268 flow [2024-11-16 19:09:39,186 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=268, PETRI_PLACES=73, PETRI_TRANSITIONS=59} [2024-11-16 19:09:39,186 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 15 predicate places. [2024-11-16 19:09:39,187 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 59 transitions, 268 flow [2024-11-16 19:09:39,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:09:39,187 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:09:39,187 INFO L204 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] [2024-11-16 19:09:39,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 19:09:39,188 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:09:39,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:09:39,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1620297830, now seen corresponding path program 2 times [2024-11-16 19:09:39,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:09:39,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508893688] [2024-11-16 19:09:39,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:09:39,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:09:39,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:09:39,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:09:39,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:09:39,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508893688] [2024-11-16 19:09:39,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508893688] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:09:39,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:09:39,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 19:09:39,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346204532] [2024-11-16 19:09:39,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:09:39,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 19:09:39,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:09:39,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 19:09:39,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-16 19:09:39,473 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-11-16 19:09:39,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 59 transitions, 268 flow. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:09:39,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:09:39,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-11-16 19:09:39,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:09:40,841 INFO L124 PetriNetUnfolderBase]: 17131/23405 cut-off events. [2024-11-16 19:09:40,841 INFO L125 PetriNetUnfolderBase]: For 29773/29773 co-relation queries the response was YES. [2024-11-16 19:09:40,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68236 conditions, 23405 events. 17131/23405 cut-off events. For 29773/29773 co-relation queries the response was YES. Maximal size of possible extension queue 713. Compared 127509 event pairs, 2739 based on Foata normal form. 288/23658 useless extension candidates. Maximal degree in co-relation 68213. Up to 8604 conditions per place. [2024-11-16 19:09:40,933 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 99 selfloop transitions, 18 changer transitions 14/136 dead transitions. [2024-11-16 19:09:40,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 136 transitions, 800 flow [2024-11-16 19:09:40,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 19:09:40,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-16 19:09:40,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 196 transitions. [2024-11-16 19:09:40,934 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.56 [2024-11-16 19:09:40,934 INFO L175 Difference]: Start difference. First operand has 73 places, 59 transitions, 268 flow. Second operand 7 states and 196 transitions. [2024-11-16 19:09:40,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 136 transitions, 800 flow [2024-11-16 19:09:41,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 136 transitions, 770 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-11-16 19:09:41,305 INFO L231 Difference]: Finished difference. Result has 74 places, 57 transitions, 290 flow [2024-11-16 19:09:41,306 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=290, PETRI_PLACES=74, PETRI_TRANSITIONS=57} [2024-11-16 19:09:41,306 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 16 predicate places. [2024-11-16 19:09:41,306 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 57 transitions, 290 flow [2024-11-16 19:09:41,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:09:41,307 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:09:41,307 INFO L204 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] [2024-11-16 19:09:41,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 19:09:41,307 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:09:41,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:09:41,307 INFO L85 PathProgramCache]: Analyzing trace with hash -400424783, now seen corresponding path program 1 times [2024-11-16 19:09:41,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:09:41,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676441274] [2024-11-16 19:09:41,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:09:41,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:09:41,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:09:41,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:09:41,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:09:41,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676441274] [2024-11-16 19:09:41,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676441274] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:09:41,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:09:41,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 19:09:41,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413947978] [2024-11-16 19:09:41,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:09:41,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 19:09:41,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:09:41,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 19:09:41,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 19:09:41,579 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2024-11-16 19:09:41,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 57 transitions, 290 flow. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:09:41,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:09:41,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2024-11-16 19:09:41,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand