./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --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 f044966ade6b1d79627a5dcb577ad24e14a4ae2ab2467e458af5fa83aa6cd521 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 14:37:42,637 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 14:37:42,683 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 14:37:42,689 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 14:37:42,690 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 14:37:42,729 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 14:37:42,729 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 14:37:42,730 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 14:37:42,730 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 14:37:42,742 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 14:37:42,742 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 14:37:42,742 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 14:37:42,743 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 14:37:42,743 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 14:37:42,743 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 14:37:42,743 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 14:37:42,743 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 14:37:42,744 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 14:37:42,744 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 14:37:42,744 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 14:37:42,744 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 14:37:42,747 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 14:37:42,747 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 14:37:42,747 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 14:37:42,748 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 14:37:42,748 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 14:37:42,748 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 14:37:42,748 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 14:37:42,748 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 14:37:42,748 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 14:37:42,749 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 14:37:42,749 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 14:37:42,749 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 14:37:42,749 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 14:37:42,749 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 14:37:42,749 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 14:37:42,750 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 14:37:42,750 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 14:37:42,750 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 14:37:42,750 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 14:37:42,750 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 14:37:42,752 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 14:37:42,752 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f044966ade6b1d79627a5dcb577ad24e14a4ae2ab2467e458af5fa83aa6cd521 [2024-10-14 14:37:42,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 14:37:42,989 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 14:37:42,991 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 14:37:42,992 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 14:37:42,992 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 14:37:42,993 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c [2024-10-14 14:37:44,350 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 14:37:44,499 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 14:37:44,500 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c [2024-10-14 14:37:44,508 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e6579be7/dca3ad378b4849b2a7191461fc08b6b8/FLAG336f0388a [2024-10-14 14:37:44,541 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e6579be7/dca3ad378b4849b2a7191461fc08b6b8 [2024-10-14 14:37:44,543 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 14:37:44,544 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 14:37:44,547 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 14:37:44,547 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 14:37:44,551 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 14:37:44,551 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:37:44" (1/1) ... [2024-10-14 14:37:44,553 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@159f701d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:37:44, skipping insertion in model container [2024-10-14 14:37:44,553 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:37:44" (1/1) ... [2024-10-14 14:37:44,573 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 14:37:44,732 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c[4028,4041] [2024-10-14 14:37:44,737 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 14:37:44,749 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 14:37:44,774 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c[4028,4041] [2024-10-14 14:37:44,777 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 14:37:44,793 INFO L204 MainTranslator]: Completed translation [2024-10-14 14:37:44,793 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:37:44 WrapperNode [2024-10-14 14:37:44,793 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 14:37:44,794 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 14:37:44,794 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 14:37:44,794 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 14:37:44,799 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:37:44" (1/1) ... [2024-10-14 14:37:44,813 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:37:44" (1/1) ... [2024-10-14 14:37:44,833 INFO L138 Inliner]: procedures = 23, calls = 60, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 222 [2024-10-14 14:37:44,834 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 14:37:44,834 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 14:37:44,834 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 14:37:44,835 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 14:37:44,844 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:37:44" (1/1) ... [2024-10-14 14:37:44,844 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:37:44" (1/1) ... [2024-10-14 14:37:44,850 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:37:44" (1/1) ... [2024-10-14 14:37:44,873 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]. [2024-10-14 14:37:44,875 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:37:44" (1/1) ... [2024-10-14 14:37:44,876 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:37:44" (1/1) ... [2024-10-14 14:37:44,883 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:37:44" (1/1) ... [2024-10-14 14:37:44,885 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:37:44" (1/1) ... [2024-10-14 14:37:44,887 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:37:44" (1/1) ... [2024-10-14 14:37:44,888 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:37:44" (1/1) ... [2024-10-14 14:37:44,890 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 14:37:44,891 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 14:37:44,891 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 14:37:44,891 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 14:37:44,892 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:37:44" (1/1) ... [2024-10-14 14:37:44,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 14:37:44,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:37:44,918 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) [2024-10-14 14:37:44,921 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 [2024-10-14 14:37:44,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 14:37:44,955 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-14 14:37:44,955 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-14 14:37:44,956 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-14 14:37:44,956 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-14 14:37:44,956 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-14 14:37:44,956 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-14 14:37:44,956 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-10-14 14:37:44,956 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-10-14 14:37:44,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 14:37:44,956 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2024-10-14 14:37:44,957 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2024-10-14 14:37:44,957 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-14 14:37:44,957 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-14 14:37:44,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 14:37:44,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 14:37:44,958 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 14:37:45,036 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 14:37:45,038 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 14:37:45,259 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 14:37:45,259 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 14:37:45,446 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 14:37:45,447 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-14 14:37:45,447 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:37:45 BoogieIcfgContainer [2024-10-14 14:37:45,447 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 14:37:45,450 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 14:37:45,450 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 14:37:45,453 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 14:37:45,453 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:37:44" (1/3) ... [2024-10-14 14:37:45,454 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ad05ae1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:37:45, skipping insertion in model container [2024-10-14 14:37:45,454 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:37:44" (2/3) ... [2024-10-14 14:37:45,454 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ad05ae1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:37:45, skipping insertion in model container [2024-10-14 14:37:45,454 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:37:45" (3/3) ... [2024-10-14 14:37:45,455 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-5.wvr.c [2024-10-14 14:37:45,473 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 14:37:45,474 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 14:37:45,474 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 14:37:45,570 INFO L143 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2024-10-14 14:37:45,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 55 transitions, 145 flow [2024-10-14 14:37:45,622 INFO L124 PetriNetUnfolderBase]: 0/50 cut-off events. [2024-10-14 14:37:45,623 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-10-14 14:37:45,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 50 events. 0/50 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 96 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-10-14 14:37:45,624 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 55 transitions, 145 flow [2024-10-14 14:37:45,627 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 49 transitions, 128 flow [2024-10-14 14:37:45,634 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 14:37:45,639 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;@1175b64f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 14:37:45,639 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-10-14 14:37:45,651 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 14:37:45,651 INFO L124 PetriNetUnfolderBase]: 0/48 cut-off events. [2024-10-14 14:37:45,651 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-10-14 14:37:45,651 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:37:45,652 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:37:45,652 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-14 14:37:45,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:37:45,656 INFO L85 PathProgramCache]: Analyzing trace with hash -842312093, now seen corresponding path program 1 times [2024-10-14 14:37:45,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:37:45,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233788048] [2024-10-14 14:37:45,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:37:45,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:37:45,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:37:46,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:37:46,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:37:46,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233788048] [2024-10-14 14:37:46,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233788048] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:37:46,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:37:46,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 14:37:46,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315956541] [2024-10-14 14:37:46,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:37:46,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 14:37:46,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:37:46,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 14:37:46,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 14:37:46,894 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 55 [2024-10-14 14:37:46,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 49 transitions, 128 flow. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 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) [2024-10-14 14:37:46,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:37:46,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 55 [2024-10-14 14:37:46,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:37:55,944 INFO L124 PetriNetUnfolderBase]: 127801/164404 cut-off events. [2024-10-14 14:37:55,944 INFO L125 PetriNetUnfolderBase]: For 9282/9282 co-relation queries the response was YES. [2024-10-14 14:37:56,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 336894 conditions, 164404 events. 127801/164404 cut-off events. For 9282/9282 co-relation queries the response was YES. Maximal size of possible extension queue 4607. Compared 978293 event pairs, 78492 based on Foata normal form. 1/164153 useless extension candidates. Maximal degree in co-relation 308739. Up to 92016 conditions per place. [2024-10-14 14:37:56,686 INFO L140 encePairwiseOnDemand]: 47/55 looper letters, 93 selfloop transitions, 6 changer transitions 8/113 dead transitions. [2024-10-14 14:37:56,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 113 transitions, 506 flow [2024-10-14 14:37:56,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 14:37:56,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 14:37:56,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 152 transitions. [2024-10-14 14:37:56,697 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6909090909090909 [2024-10-14 14:37:56,698 INFO L175 Difference]: Start difference. First operand has 65 places, 49 transitions, 128 flow. Second operand 4 states and 152 transitions. [2024-10-14 14:37:56,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 113 transitions, 506 flow [2024-10-14 14:37:57,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 113 transitions, 462 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-10-14 14:37:57,398 INFO L231 Difference]: Finished difference. Result has 60 places, 53 transitions, 147 flow [2024-10-14 14:37:57,400 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=147, PETRI_PLACES=60, PETRI_TRANSITIONS=53} [2024-10-14 14:37:57,410 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, -5 predicate places. [2024-10-14 14:37:57,410 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 53 transitions, 147 flow [2024-10-14 14:37:57,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 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) [2024-10-14 14:37:57,411 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:37:57,411 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:37:57,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 14:37:57,411 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-14 14:37:57,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:37:57,412 INFO L85 PathProgramCache]: Analyzing trace with hash 919784683, now seen corresponding path program 2 times [2024-10-14 14:37:57,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:37:57,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142921861] [2024-10-14 14:37:57,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:37:57,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:37:57,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:37:57,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:37:57,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:37:57,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142921861] [2024-10-14 14:37:57,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142921861] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:37:57,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:37:57,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 14:37:57,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819219149] [2024-10-14 14:37:57,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:37:57,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 14:37:57,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:37:57,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 14:37:57,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 14:37:57,526 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-10-14 14:37:57,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 53 transitions, 147 flow. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 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) [2024-10-14 14:37:57,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:37:57,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-10-14 14:37:57,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:38:05,471 INFO L124 PetriNetUnfolderBase]: 114161/157994 cut-off events. [2024-10-14 14:38:05,472 INFO L125 PetriNetUnfolderBase]: For 2529/2529 co-relation queries the response was YES. [2024-10-14 14:38:05,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 320923 conditions, 157994 events. 114161/157994 cut-off events. For 2529/2529 co-relation queries the response was YES. Maximal size of possible extension queue 6391. Compared 1164670 event pairs, 34852 based on Foata normal form. 1432/154829 useless extension candidates. Maximal degree in co-relation 129586. Up to 51610 conditions per place. [2024-10-14 14:38:06,682 INFO L140 encePairwiseOnDemand]: 43/55 looper letters, 103 selfloop transitions, 21 changer transitions 0/140 dead transitions. [2024-10-14 14:38:06,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 140 transitions, 587 flow [2024-10-14 14:38:06,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 14:38:06,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 14:38:06,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 210 transitions. [2024-10-14 14:38:06,684 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7636363636363637 [2024-10-14 14:38:06,685 INFO L175 Difference]: Start difference. First operand has 60 places, 53 transitions, 147 flow. Second operand 5 states and 210 transitions. [2024-10-14 14:38:06,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 140 transitions, 587 flow [2024-10-14 14:38:06,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 140 transitions, 576 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-10-14 14:38:06,770 INFO L231 Difference]: Finished difference. Result has 63 places, 73 transitions, 265 flow [2024-10-14 14:38:06,770 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=265, PETRI_PLACES=63, PETRI_TRANSITIONS=73} [2024-10-14 14:38:06,771 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, -2 predicate places. [2024-10-14 14:38:06,771 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 73 transitions, 265 flow [2024-10-14 14:38:06,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 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) [2024-10-14 14:38:06,771 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:38:06,771 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:38:06,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 14:38:06,772 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-14 14:38:06,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:38:06,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1308145787, now seen corresponding path program 3 times [2024-10-14 14:38:06,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:38:06,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397783406] [2024-10-14 14:38:06,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:38:06,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:38:06,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:38:06,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:38:06,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:38:06,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397783406] [2024-10-14 14:38:06,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397783406] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:38:06,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:38:06,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 14:38:06,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505656645] [2024-10-14 14:38:06,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:38:06,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 14:38:06,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:38:06,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 14:38:06,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 14:38:06,908 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-10-14 14:38:06,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 73 transitions, 265 flow. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 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) [2024-10-14 14:38:06,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:38:06,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-10-14 14:38:06,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:38:16,187 INFO L124 PetriNetUnfolderBase]: 116026/163006 cut-off events. [2024-10-14 14:38:16,187 INFO L125 PetriNetUnfolderBase]: For 76656/77955 co-relation queries the response was YES. [2024-10-14 14:38:16,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 417486 conditions, 163006 events. 116026/163006 cut-off events. For 76656/77955 co-relation queries the response was YES. Maximal size of possible extension queue 6648. Compared 1249978 event pairs, 31818 based on Foata normal form. 1866/160655 useless extension candidates. Maximal degree in co-relation 92467. Up to 51840 conditions per place. [2024-10-14 14:38:17,135 INFO L140 encePairwiseOnDemand]: 43/55 looper letters, 98 selfloop transitions, 28 changer transitions 0/142 dead transitions. [2024-10-14 14:38:17,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 142 transitions, 718 flow [2024-10-14 14:38:17,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 14:38:17,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 14:38:17,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 205 transitions. [2024-10-14 14:38:17,140 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7454545454545455 [2024-10-14 14:38:17,140 INFO L175 Difference]: Start difference. First operand has 63 places, 73 transitions, 265 flow. Second operand 5 states and 205 transitions. [2024-10-14 14:38:17,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 142 transitions, 718 flow [2024-10-14 14:38:17,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 142 transitions, 718 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 14:38:17,153 INFO L231 Difference]: Finished difference. Result has 69 places, 81 transitions, 390 flow [2024-10-14 14:38:17,153 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=390, PETRI_PLACES=69, PETRI_TRANSITIONS=81} [2024-10-14 14:38:17,154 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 4 predicate places. [2024-10-14 14:38:17,154 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 81 transitions, 390 flow [2024-10-14 14:38:17,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 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) [2024-10-14 14:38:17,155 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:38:17,155 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:38:17,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 14:38:17,155 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-14 14:38:17,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:38:17,156 INFO L85 PathProgramCache]: Analyzing trace with hash 464101467, now seen corresponding path program 4 times [2024-10-14 14:38:17,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:38:17,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324081991] [2024-10-14 14:38:17,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:38:17,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:38:17,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:38:17,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:38:17,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:38:17,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324081991] [2024-10-14 14:38:17,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324081991] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:38:17,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:38:17,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 14:38:17,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711754615] [2024-10-14 14:38:17,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:38:17,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 14:38:17,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:38:17,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 14:38:17,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-14 14:38:17,261 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-10-14 14:38:17,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 81 transitions, 390 flow. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 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) [2024-10-14 14:38:17,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:38:17,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-10-14 14:38:17,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand