./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d 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/weaver/bench-exp3x3-opt.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 df63a9317cd159d15f0c87211084d5e90c66afa781f3187352107d14a3f61024 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 02:39:34,475 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 02:39:34,528 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 02:39:34,533 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 02:39:34,536 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 02:39:34,574 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 02:39:34,577 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 02:39:34,577 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 02:39:34,578 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 02:39:34,579 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 02:39:34,580 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 02:39:34,580 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 02:39:34,581 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 02:39:34,581 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 02:39:34,582 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 02:39:34,584 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 02:39:34,584 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 02:39:34,584 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 02:39:34,585 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 02:39:34,585 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 02:39:34,585 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 02:39:34,586 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 02:39:34,586 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 02:39:34,587 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 02:39:34,587 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 02:39:34,587 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 02:39:34,588 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 02:39:34,589 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 02:39:34,590 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 02:39:34,590 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 02:39:34,590 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 02:39:34,590 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 02:39:34,590 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:39:34,591 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 02:39:34,591 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 02:39:34,591 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 02:39:34,591 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 02:39:34,592 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 02:39:34,592 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 02:39:34,592 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 02:39:34,592 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 02:39:34,593 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 02:39:34,593 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> df63a9317cd159d15f0c87211084d5e90c66afa781f3187352107d14a3f61024 [2024-11-09 02:39:34,826 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 02:39:34,855 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 02:39:34,857 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 02:39:34,859 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 02:39:34,859 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 02:39:34,860 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c [2024-11-09 02:39:36,360 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 02:39:36,561 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 02:39:36,561 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c [2024-11-09 02:39:36,568 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf26ba2f1/701d3c72dfbf4782bbc01add5e731e3a/FLAG35614024f [2024-11-09 02:39:36,580 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf26ba2f1/701d3c72dfbf4782bbc01add5e731e3a [2024-11-09 02:39:36,582 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 02:39:36,584 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 02:39:36,585 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 02:39:36,585 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 02:39:36,593 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 02:39:36,594 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:39:36" (1/1) ... [2024-11-09 02:39:36,595 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ddb6353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:39:36, skipping insertion in model container [2024-11-09 02:39:36,595 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:39:36" (1/1) ... [2024-11-09 02:39:36,619 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 02:39:36,852 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/weaver/bench-exp3x3-opt.wvr.c[2904,2917] [2024-11-09 02:39:36,858 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:39:36,865 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 02:39:36,886 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/weaver/bench-exp3x3-opt.wvr.c[2904,2917] [2024-11-09 02:39:36,887 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:39:36,908 INFO L204 MainTranslator]: Completed translation [2024-11-09 02:39:36,909 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:39:36 WrapperNode [2024-11-09 02:39:36,909 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 02:39:36,910 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 02:39:36,911 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 02:39:36,911 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 02:39:36,917 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:39:36" (1/1) ... [2024-11-09 02:39:36,928 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:39:36" (1/1) ... [2024-11-09 02:39:36,945 INFO L138 Inliner]: procedures = 24, calls = 14, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 95 [2024-11-09 02:39:36,945 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 02:39:36,946 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 02:39:36,946 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 02:39:36,946 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 02:39:36,955 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:39:36" (1/1) ... [2024-11-09 02:39:36,955 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:39:36" (1/1) ... [2024-11-09 02:39:36,958 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:39:36" (1/1) ... [2024-11-09 02:39:36,973 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]. [2024-11-09 02:39:36,974 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:39:36" (1/1) ... [2024-11-09 02:39:36,974 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:39:36" (1/1) ... [2024-11-09 02:39:36,979 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:39:36" (1/1) ... [2024-11-09 02:39:36,982 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:39:36" (1/1) ... [2024-11-09 02:39:36,984 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:39:36" (1/1) ... [2024-11-09 02:39:36,985 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:39:36" (1/1) ... [2024-11-09 02:39:36,987 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 02:39:36,988 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 02:39:36,988 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 02:39:36,988 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 02:39:36,989 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:39:36" (1/1) ... [2024-11-09 02:39:36,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:39:37,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:39:37,023 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) [2024-11-09 02:39:37,025 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 [2024-11-09 02:39:37,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 02:39:37,070 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 02:39:37,070 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 02:39:37,070 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 02:39:37,070 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 02:39:37,070 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-09 02:39:37,071 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-09 02:39:37,071 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-09 02:39:37,071 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-09 02:39:37,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 02:39:37,071 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2024-11-09 02:39:37,071 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2024-11-09 02:39:37,071 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2024-11-09 02:39:37,071 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2024-11-09 02:39:37,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 02:39:37,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 02:39:37,073 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 02:39:37,170 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 02:39:37,172 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 02:39:37,392 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 02:39:37,392 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 02:39:37,570 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 02:39:37,570 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-09 02:39:37,570 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:39:37 BoogieIcfgContainer [2024-11-09 02:39:37,570 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 02:39:37,573 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 02:39:37,573 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 02:39:37,576 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 02:39:37,576 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 02:39:36" (1/3) ... [2024-11-09 02:39:37,577 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21598623 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:39:37, skipping insertion in model container [2024-11-09 02:39:37,577 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:39:36" (2/3) ... [2024-11-09 02:39:37,577 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21598623 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:39:37, skipping insertion in model container [2024-11-09 02:39:37,577 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:39:37" (3/3) ... [2024-11-09 02:39:37,579 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp3x3-opt.wvr.c [2024-11-09 02:39:37,593 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 02:39:37,593 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 02:39:37,593 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 02:39:37,665 INFO L143 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2024-11-09 02:39:37,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 46 transitions, 134 flow [2024-11-09 02:39:37,743 INFO L124 PetriNetUnfolderBase]: 6/40 cut-off events. [2024-11-09 02:39:37,743 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-09 02:39:37,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 40 events. 6/40 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2024-11-09 02:39:37,748 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 46 transitions, 134 flow [2024-11-09 02:39:37,752 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 39 transitions, 114 flow [2024-11-09 02:39:37,764 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:39:37,772 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;@2765d1a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:39:37,772 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-09 02:39:37,791 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:39:37,791 INFO L124 PetriNetUnfolderBase]: 6/38 cut-off events. [2024-11-09 02:39:37,792 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-09 02:39:37,792 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:39:37,793 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] [2024-11-09 02:39:37,793 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 4 more)] === [2024-11-09 02:39:37,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:39:37,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1273891109, now seen corresponding path program 1 times [2024-11-09 02:39:37,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:39:37,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304152806] [2024-11-09 02:39:37,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:39:37,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:39:37,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:39:38,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:39:38,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:39:38,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304152806] [2024-11-09 02:39:38,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304152806] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:39:38,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:39:38,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 02:39:38,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558811894] [2024-11-09 02:39:38,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:39:38,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:39:38,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:39:38,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:39:38,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:39:38,366 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-09 02:39:38,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2024-11-09 02:39:38,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:39:38,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-09 02:39:38,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:39:40,567 INFO L124 PetriNetUnfolderBase]: 22467/26032 cut-off events. [2024-11-09 02:39:40,570 INFO L125 PetriNetUnfolderBase]: For 1291/1291 co-relation queries the response was YES. [2024-11-09 02:39:40,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53577 conditions, 26032 events. 22467/26032 cut-off events. For 1291/1291 co-relation queries the response was YES. Maximal size of possible extension queue 834. Compared 90072 event pairs, 3392 based on Foata normal form. 1/14205 useless extension candidates. Maximal degree in co-relation 44055. Up to 18721 conditions per place. [2024-11-09 02:39:40,751 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 53 selfloop transitions, 3 changer transitions 5/68 dead transitions. [2024-11-09 02:39:40,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 68 transitions, 327 flow [2024-11-09 02:39:40,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:39:40,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:39:40,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-11-09 02:39:40,763 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7318840579710145 [2024-11-09 02:39:40,765 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 114 flow. Second operand 3 states and 101 transitions. [2024-11-09 02:39:40,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 68 transitions, 327 flow [2024-11-09 02:39:40,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 68 transitions, 281 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-11-09 02:39:40,829 INFO L231 Difference]: Finished difference. Result has 43 places, 41 transitions, 109 flow [2024-11-09 02:39:40,831 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=109, PETRI_PLACES=43, PETRI_TRANSITIONS=41} [2024-11-09 02:39:40,834 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -9 predicate places. [2024-11-09 02:39:40,834 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 41 transitions, 109 flow [2024-11-09 02:39:40,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2024-11-09 02:39:40,835 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:39:40,835 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] [2024-11-09 02:39:40,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 02:39:40,836 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 4 more)] === [2024-11-09 02:39:40,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:39:40,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1632091046, now seen corresponding path program 1 times [2024-11-09 02:39:40,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:39:40,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107870925] [2024-11-09 02:39:40,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:39:40,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:39:40,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:39:41,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:39:41,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:39:41,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107870925] [2024-11-09 02:39:41,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107870925] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:39:41,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:39:41,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 02:39:41,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239343187] [2024-11-09 02:39:41,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:39:41,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:39:41,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:39:41,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:39:41,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:39:41,032 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-09 02:39:41,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 41 transitions, 109 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2024-11-09 02:39:41,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:39:41,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-09 02:39:41,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:39:43,235 INFO L124 PetriNetUnfolderBase]: 28887/33823 cut-off events. [2024-11-09 02:39:43,236 INFO L125 PetriNetUnfolderBase]: For 5242/5242 co-relation queries the response was YES. [2024-11-09 02:39:43,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73953 conditions, 33823 events. 28887/33823 cut-off events. For 5242/5242 co-relation queries the response was YES. Maximal size of possible extension queue 1207. Compared 126061 event pairs, 5370 based on Foata normal form. 1/23088 useless extension candidates. Maximal degree in co-relation 30558. Up to 22060 conditions per place. [2024-11-09 02:39:43,428 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 53 selfloop transitions, 3 changer transitions 1/64 dead transitions. [2024-11-09 02:39:43,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 64 transitions, 286 flow [2024-11-09 02:39:43,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:39:43,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:39:43,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2024-11-09 02:39:43,433 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6739130434782609 [2024-11-09 02:39:43,434 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 109 flow. Second operand 3 states and 93 transitions. [2024-11-09 02:39:43,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 64 transitions, 286 flow [2024-11-09 02:39:43,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 64 transitions, 281 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 02:39:43,437 INFO L231 Difference]: Finished difference. Result has 45 places, 43 transitions, 125 flow [2024-11-09 02:39:43,438 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=45, PETRI_TRANSITIONS=43} [2024-11-09 02:39:43,439 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -7 predicate places. [2024-11-09 02:39:43,440 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 43 transitions, 125 flow [2024-11-09 02:39:43,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2024-11-09 02:39:43,441 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:39:43,441 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] [2024-11-09 02:39:43,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 02:39:43,442 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 4 more)] === [2024-11-09 02:39:43,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:39:43,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1847200297, now seen corresponding path program 1 times [2024-11-09 02:39:43,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:39:43,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549600035] [2024-11-09 02:39:43,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:39:43,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:39:43,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:39:43,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:39:43,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:39:43,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549600035] [2024-11-09 02:39:43,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549600035] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:39:43,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:39:43,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 02:39:43,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309907528] [2024-11-09 02:39:43,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:39:43,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:39:43,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:39:43,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:39:43,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:39:43,617 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-09 02:39:43,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 43 transitions, 125 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2024-11-09 02:39:43,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:39:43,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-09 02:39:43,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:39:45,681 INFO L124 PetriNetUnfolderBase]: 36445/42858 cut-off events. [2024-11-09 02:39:45,682 INFO L125 PetriNetUnfolderBase]: For 12374/12374 co-relation queries the response was YES. [2024-11-09 02:39:45,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100240 conditions, 42858 events. 36445/42858 cut-off events. For 12374/12374 co-relation queries the response was YES. Maximal size of possible extension queue 1536. Compared 168991 event pairs, 5856 based on Foata normal form. 1/35380 useless extension candidates. Maximal degree in co-relation 32750. Up to 31148 conditions per place. [2024-11-09 02:39:45,898 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 59 selfloop transitions, 3 changer transitions 3/72 dead transitions. [2024-11-09 02:39:45,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 72 transitions, 340 flow [2024-11-09 02:39:45,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:39:45,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:39:45,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2024-11-09 02:39:45,900 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7028985507246377 [2024-11-09 02:39:45,900 INFO L175 Difference]: Start difference. First operand has 45 places, 43 transitions, 125 flow. Second operand 3 states and 97 transitions. [2024-11-09 02:39:45,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 72 transitions, 340 flow [2024-11-09 02:39:45,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 72 transitions, 335 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 02:39:45,905 INFO L231 Difference]: Finished difference. Result has 47 places, 45 transitions, 141 flow [2024-11-09 02:39:45,905 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=141, PETRI_PLACES=47, PETRI_TRANSITIONS=45} [2024-11-09 02:39:45,906 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -5 predicate places. [2024-11-09 02:39:45,906 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 45 transitions, 141 flow [2024-11-09 02:39:45,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2024-11-09 02:39:45,906 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:39:45,907 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] [2024-11-09 02:39:45,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 02:39:45,907 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 4 more)] === [2024-11-09 02:39:45,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:39:45,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1539604524, now seen corresponding path program 1 times [2024-11-09 02:39:45,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:39:45,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722898364] [2024-11-09 02:39:45,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:39:45,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:39:45,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:39:46,052 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:39:46,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:39:46,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722898364] [2024-11-09 02:39:46,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722898364] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:39:46,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:39:46,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:39:46,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084242472] [2024-11-09 02:39:46,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:39:46,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:39:46,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:39:46,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:39:46,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:39:46,058 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-09 02:39:46,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 141 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2024-11-09 02:39:46,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:39:46,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-09 02:39:46,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:39:48,516 INFO L124 PetriNetUnfolderBase]: 41073/48677 cut-off events. [2024-11-09 02:39:48,516 INFO L125 PetriNetUnfolderBase]: For 18456/18456 co-relation queries the response was YES. [2024-11-09 02:39:48,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122495 conditions, 48677 events. 41073/48677 cut-off events. For 18456/18456 co-relation queries the response was YES. Maximal size of possible extension queue 1782. Compared 205151 event pairs, 6124 based on Foata normal form. 981/49144 useless extension candidates. Maximal degree in co-relation 40746. Up to 22914 conditions per place. [2024-11-09 02:39:48,731 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 106 selfloop transitions, 6 changer transitions 11/130 dead transitions. [2024-11-09 02:39:48,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 130 transitions, 643 flow [2024-11-09 02:39:48,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:39:48,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:39:48,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 175 transitions. [2024-11-09 02:39:48,735 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7608695652173914 [2024-11-09 02:39:48,736 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 141 flow. Second operand 5 states and 175 transitions. [2024-11-09 02:39:48,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 130 transitions, 643 flow [2024-11-09 02:39:48,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 130 transitions, 634 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 02:39:48,744 INFO L231 Difference]: Finished difference. Result has 52 places, 48 transitions, 175 flow [2024-11-09 02:39:48,745 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=175, PETRI_PLACES=52, PETRI_TRANSITIONS=48} [2024-11-09 02:39:48,745 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2024-11-09 02:39:48,746 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 48 transitions, 175 flow [2024-11-09 02:39:48,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2024-11-09 02:39:48,746 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:39:48,746 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] [2024-11-09 02:39:48,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 02:39:48,747 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-09 02:39:48,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:39:48,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1576941873, now seen corresponding path program 1 times [2024-11-09 02:39:48,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:39:48,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489708432] [2024-11-09 02:39:48,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:39:48,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:39:48,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:39:48,888 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:39:48,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:39:48,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489708432] [2024-11-09 02:39:48,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489708432] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:39:48,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:39:48,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:39:48,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111350033] [2024-11-09 02:39:48,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:39:48,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:39:48,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:39:48,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:39:48,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:39:48,894 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-09 02:39:48,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 48 transitions, 175 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2024-11-09 02:39:48,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:39:48,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-09 02:39:48,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:39:51,451 INFO L124 PetriNetUnfolderBase]: 40803/48295 cut-off events. [2024-11-09 02:39:51,451 INFO L125 PetriNetUnfolderBase]: For 30028/30028 co-relation queries the response was YES. [2024-11-09 02:39:51,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132577 conditions, 48295 events. 40803/48295 cut-off events. For 30028/30028 co-relation queries the response was YES. Maximal size of possible extension queue 1743. Compared 202039 event pairs, 973 based on Foata normal form. 562/48727 useless extension candidates. Maximal degree in co-relation 51811. Up to 18355 conditions per place. [2024-11-09 02:39:51,689 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 84 selfloop transitions, 4 changer transitions 35/130 dead transitions. [2024-11-09 02:39:51,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 130 transitions, 679 flow [2024-11-09 02:39:51,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:39:51,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:39:51,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 169 transitions. [2024-11-09 02:39:51,691 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7347826086956522 [2024-11-09 02:39:51,691 INFO L175 Difference]: Start difference. First operand has 52 places, 48 transitions, 175 flow. Second operand 5 states and 169 transitions. [2024-11-09 02:39:51,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 130 transitions, 679 flow [2024-11-09 02:39:51,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 130 transitions, 673 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-09 02:39:51,918 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 183 flow [2024-11-09 02:39:51,919 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=183, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2024-11-09 02:39:51,920 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 4 predicate places. [2024-11-09 02:39:51,922 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 183 flow [2024-11-09 02:39:51,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2024-11-09 02:39:51,922 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:39:51,922 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] [2024-11-09 02:39:51,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 02:39:51,923 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-09 02:39:51,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:39:51,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1386392631, now seen corresponding path program 2 times [2024-11-09 02:39:51,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:39:51,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383354916] [2024-11-09 02:39:51,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:39:51,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:39:51,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:39:52,050 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:39:52,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:39:52,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383354916] [2024-11-09 02:39:52,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383354916] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:39:52,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:39:52,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:39:52,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137038117] [2024-11-09 02:39:52,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:39:52,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:39:52,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:39:52,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:39:52,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:39:52,054 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-09 02:39:52,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 183 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2024-11-09 02:39:52,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:39:52,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-09 02:39:52,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:39:53,790 INFO L124 PetriNetUnfolderBase]: 28369/33687 cut-off events. [2024-11-09 02:39:53,790 INFO L125 PetriNetUnfolderBase]: For 38197/38197 co-relation queries the response was YES. [2024-11-09 02:39:53,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100041 conditions, 33687 events. 28369/33687 cut-off events. For 38197/38197 co-relation queries the response was YES. Maximal size of possible extension queue 1210. Compared 135687 event pairs, 3839 based on Foata normal form. 721/33997 useless extension candidates. Maximal degree in co-relation 51731. Up to 16437 conditions per place. [2024-11-09 02:39:53,934 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 112 selfloop transitions, 6 changer transitions 7/132 dead transitions. [2024-11-09 02:39:53,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 132 transitions, 776 flow [2024-11-09 02:39:53,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:39:53,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:39:53,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 165 transitions. [2024-11-09 02:39:53,936 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.717391304347826 [2024-11-09 02:39:53,936 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 183 flow. Second operand 5 states and 165 transitions. [2024-11-09 02:39:53,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 132 transitions, 776 flow [2024-11-09 02:39:53,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 132 transitions, 763 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-09 02:39:53,948 INFO L231 Difference]: Finished difference. Result has 60 places, 51 transitions, 213 flow [2024-11-09 02:39:53,948 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=213, PETRI_PLACES=60, PETRI_TRANSITIONS=51} [2024-11-09 02:39:53,949 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 8 predicate places. [2024-11-09 02:39:53,949 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 51 transitions, 213 flow [2024-11-09 02:39:53,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2024-11-09 02:39:53,950 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:39:53,950 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] [2024-11-09 02:39:53,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 02:39:53,950 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-09 02:39:53,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:39:53,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1690910736, now seen corresponding path program 1 times [2024-11-09 02:39:53,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:39:53,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331834518] [2024-11-09 02:39:53,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:39:53,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:39:53,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:39:54,063 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:39:54,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:39:54,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331834518] [2024-11-09 02:39:54,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331834518] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:39:54,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923940196] [2024-11-09 02:39:54,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:39:54,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:39:54,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:39:54,068 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:39:54,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 02:39:54,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:39:54,175 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 02:39:54,180 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:39:54,299 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:39:54,301 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 02:39:54,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923940196] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:39:54,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 02:39:54,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-09 02:39:54,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012418272] [2024-11-09 02:39:54,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:39:54,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:39:54,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:39:54,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:39:54,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 02:39:54,305 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-09 02:39:54,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 51 transitions, 213 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2024-11-09 02:39:54,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:39:54,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-09 02:39:54,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:39:56,561 INFO L124 PetriNetUnfolderBase]: 27581/32810 cut-off events. [2024-11-09 02:39:56,561 INFO L125 PetriNetUnfolderBase]: For 37124/37124 co-relation queries the response was YES. [2024-11-09 02:39:56,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107692 conditions, 32810 events. 27581/32810 cut-off events. For 37124/37124 co-relation queries the response was YES. Maximal size of possible extension queue 1186. Compared 134456 event pairs, 1277 based on Foata normal form. 972/33634 useless extension candidates. Maximal degree in co-relation 47549. Up to 24879 conditions per place. [2024-11-09 02:39:56,714 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 93 selfloop transitions, 4 changer transitions 0/104 dead transitions. [2024-11-09 02:39:56,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 104 transitions, 620 flow [2024-11-09 02:39:56,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 02:39:56,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 02:39:56,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2024-11-09 02:39:56,715 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6847826086956522 [2024-11-09 02:39:56,715 INFO L175 Difference]: Start difference. First operand has 60 places, 51 transitions, 213 flow. Second operand 4 states and 126 transitions. [2024-11-09 02:39:56,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 104 transitions, 620 flow [2024-11-09 02:39:56,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 104 transitions, 607 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-09 02:39:56,831 INFO L231 Difference]: Finished difference. Result has 63 places, 52 transitions, 226 flow [2024-11-09 02:39:56,831 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=226, PETRI_PLACES=63, PETRI_TRANSITIONS=52} [2024-11-09 02:39:56,832 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 11 predicate places. [2024-11-09 02:39:56,832 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 226 flow [2024-11-09 02:39:56,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2024-11-09 02:39:56,832 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:39:56,832 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] [2024-11-09 02:39:56,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 02:39:57,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:39:57,033 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-09 02:39:57,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:39:57,033 INFO L85 PathProgramCache]: Analyzing trace with hash 723661435, now seen corresponding path program 1 times [2024-11-09 02:39:57,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:39:57,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382208437] [2024-11-09 02:39:57,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:39:57,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:39:57,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:39:57,153 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:39:57,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:39:57,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382208437] [2024-11-09 02:39:57,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382208437] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:39:57,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:39:57,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:39:57,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395823089] [2024-11-09 02:39:57,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:39:57,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:39:57,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:39:57,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:39:57,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:39:57,157 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-09 02:39:57,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 226 flow. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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) [2024-11-09 02:39:57,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:39:57,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-09 02:39:57,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:39:58,901 INFO L124 PetriNetUnfolderBase]: 27237/32465 cut-off events. [2024-11-09 02:39:58,901 INFO L125 PetriNetUnfolderBase]: For 49547/49547 co-relation queries the response was YES. [2024-11-09 02:39:58,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111317 conditions, 32465 events. 27237/32465 cut-off events. For 49547/49547 co-relation queries the response was YES. Maximal size of possible extension queue 1182. Compared 130555 event pairs, 640 based on Foata normal form. 366/32708 useless extension candidates. Maximal degree in co-relation 76500. Up to 12761 conditions per place. [2024-11-09 02:39:59,019 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 92 selfloop transitions, 4 changer transitions 35/138 dead transitions. [2024-11-09 02:39:59,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 138 transitions, 886 flow [2024-11-09 02:39:59,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:39:59,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:39:59,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2024-11-09 02:39:59,021 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-11-09 02:39:59,021 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 226 flow. Second operand 5 states and 161 transitions. [2024-11-09 02:39:59,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 138 transitions, 886 flow [2024-11-09 02:39:59,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 138 transitions, 868 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 02:39:59,225 INFO L231 Difference]: Finished difference. Result has 66 places, 52 transitions, 233 flow [2024-11-09 02:39:59,225 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=233, PETRI_PLACES=66, PETRI_TRANSITIONS=52} [2024-11-09 02:39:59,225 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 14 predicate places. [2024-11-09 02:39:59,226 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 52 transitions, 233 flow [2024-11-09 02:39:59,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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) [2024-11-09 02:39:59,226 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:39:59,226 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] [2024-11-09 02:39:59,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 02:39:59,227 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-09 02:39:59,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:39:59,227 INFO L85 PathProgramCache]: Analyzing trace with hash 40113075, now seen corresponding path program 2 times [2024-11-09 02:39:59,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:39:59,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852076488] [2024-11-09 02:39:59,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:39:59,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:39:59,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:39:59,328 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:39:59,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:39:59,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852076488] [2024-11-09 02:39:59,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852076488] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:39:59,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:39:59,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:39:59,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28919914] [2024-11-09 02:39:59,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:39:59,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:39:59,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:39:59,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:39:59,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:39:59,331 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-09 02:39:59,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 52 transitions, 233 flow. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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) [2024-11-09 02:39:59,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:39:59,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-09 02:39:59,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:40:00,882 INFO L124 PetriNetUnfolderBase]: 19916/23877 cut-off events. [2024-11-09 02:40:00,882 INFO L125 PetriNetUnfolderBase]: For 50208/50208 co-relation queries the response was YES. [2024-11-09 02:40:00,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86031 conditions, 23877 events. 19916/23877 cut-off events. For 50208/50208 co-relation queries the response was YES. Maximal size of possible extension queue 834. Compared 93369 event pairs, 3114 based on Foata normal form. 406/23843 useless extension candidates. Maximal degree in co-relation 59586. Up to 9135 conditions per place. [2024-11-09 02:40:01,019 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 122 selfloop transitions, 6 changer transitions 3/138 dead transitions. [2024-11-09 02:40:01,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 138 transitions, 961 flow [2024-11-09 02:40:01,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:40:01,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:40:01,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 155 transitions. [2024-11-09 02:40:01,021 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6739130434782609 [2024-11-09 02:40:01,021 INFO L175 Difference]: Start difference. First operand has 66 places, 52 transitions, 233 flow. Second operand 5 states and 155 transitions. [2024-11-09 02:40:01,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 138 transitions, 961 flow [2024-11-09 02:40:01,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 138 transitions, 948 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-09 02:40:01,036 INFO L231 Difference]: Finished difference. Result has 70 places, 55 transitions, 263 flow [2024-11-09 02:40:01,036 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=263, PETRI_PLACES=70, PETRI_TRANSITIONS=55} [2024-11-09 02:40:01,037 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 18 predicate places. [2024-11-09 02:40:01,037 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 55 transitions, 263 flow [2024-11-09 02:40:01,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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) [2024-11-09 02:40:01,037 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:40:01,038 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] [2024-11-09 02:40:01,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 02:40:01,038 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-09 02:40:01,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:40:01,039 INFO L85 PathProgramCache]: Analyzing trace with hash -87921704, now seen corresponding path program 1 times [2024-11-09 02:40:01,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:40:01,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452138487] [2024-11-09 02:40:01,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:01,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:40:01,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:01,201 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:40:01,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:40:01,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452138487] [2024-11-09 02:40:01,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452138487] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:40:01,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499242136] [2024-11-09 02:40:01,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:01,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:40:01,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:40:01,206 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:40:01,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 02:40:01,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:01,292 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 02:40:01,294 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:40:01,389 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:40:01,389 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 02:40:01,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499242136] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:40:01,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 02:40:01,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-09 02:40:01,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250427988] [2024-11-09 02:40:01,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:40:01,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:40:01,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:40:01,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:40:01,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 02:40:01,392 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-09 02:40:01,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 55 transitions, 263 flow. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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) [2024-11-09 02:40:01,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:40:01,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-09 02:40:01,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:40:02,598 INFO L124 PetriNetUnfolderBase]: 19120/22901 cut-off events. [2024-11-09 02:40:02,598 INFO L125 PetriNetUnfolderBase]: For 45293/45293 co-relation queries the response was YES. [2024-11-09 02:40:02,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89587 conditions, 22901 events. 19120/22901 cut-off events. For 45293/45293 co-relation queries the response was YES. Maximal size of possible extension queue 777. Compared 90712 event pairs, 677 based on Foata normal form. 796/23617 useless extension candidates. Maximal degree in co-relation 62527. Up to 16474 conditions per place. [2024-11-09 02:40:02,773 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 101 selfloop transitions, 4 changer transitions 0/112 dead transitions. [2024-11-09 02:40:02,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 112 transitions, 776 flow [2024-11-09 02:40:02,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 02:40:02,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 02:40:02,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2024-11-09 02:40:02,775 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6630434782608695 [2024-11-09 02:40:02,775 INFO L175 Difference]: Start difference. First operand has 70 places, 55 transitions, 263 flow. Second operand 4 states and 122 transitions. [2024-11-09 02:40:02,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 112 transitions, 776 flow [2024-11-09 02:40:02,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 112 transitions, 763 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-09 02:40:02,950 INFO L231 Difference]: Finished difference. Result has 73 places, 56 transitions, 276 flow [2024-11-09 02:40:02,950 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=276, PETRI_PLACES=73, PETRI_TRANSITIONS=56} [2024-11-09 02:40:02,951 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 21 predicate places. [2024-11-09 02:40:02,951 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 56 transitions, 276 flow [2024-11-09 02:40:02,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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) [2024-11-09 02:40:02,951 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:40:02,951 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] [2024-11-09 02:40:02,967 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 02:40:03,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 02:40:03,156 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-09 02:40:03,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:40:03,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1866218337, now seen corresponding path program 1 times [2024-11-09 02:40:03,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:40:03,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490583077] [2024-11-09 02:40:03,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:03,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:40:03,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:03,286 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 02:40:03,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:40:03,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490583077] [2024-11-09 02:40:03,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490583077] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:40:03,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:40:03,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:40:03,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367787996] [2024-11-09 02:40:03,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:40:03,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:40:03,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:40:03,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:40:03,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:40:03,290 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-09 02:40:03,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 56 transitions, 276 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 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) [2024-11-09 02:40:03,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:40:03,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-09 02:40:03,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:40:04,437 INFO L124 PetriNetUnfolderBase]: 18917/22797 cut-off events. [2024-11-09 02:40:04,437 INFO L125 PetriNetUnfolderBase]: For 58406/58406 co-relation queries the response was YES. [2024-11-09 02:40:04,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93087 conditions, 22797 events. 18917/22797 cut-off events. For 58406/58406 co-relation queries the response was YES. Maximal size of possible extension queue 779. Compared 87703 event pairs, 941 based on Foata normal form. 203/22722 useless extension candidates. Maximal degree in co-relation 65339. Up to 9092 conditions per place. [2024-11-09 02:40:04,588 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 100 selfloop transitions, 4 changer transitions 35/146 dead transitions. [2024-11-09 02:40:04,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 146 transitions, 1081 flow [2024-11-09 02:40:04,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:40:04,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:40:04,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 153 transitions. [2024-11-09 02:40:04,589 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6652173913043479 [2024-11-09 02:40:04,589 INFO L175 Difference]: Start difference. First operand has 73 places, 56 transitions, 276 flow. Second operand 5 states and 153 transitions. [2024-11-09 02:40:04,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 146 transitions, 1081 flow [2024-11-09 02:40:04,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 146 transitions, 1063 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 02:40:04,726 INFO L231 Difference]: Finished difference. Result has 76 places, 56 transitions, 283 flow [2024-11-09 02:40:04,726 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=283, PETRI_PLACES=76, PETRI_TRANSITIONS=56} [2024-11-09 02:40:04,727 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 24 predicate places. [2024-11-09 02:40:04,727 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 56 transitions, 283 flow [2024-11-09 02:40:04,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 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) [2024-11-09 02:40:04,727 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:40:04,727 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] [2024-11-09 02:40:04,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 02:40:04,728 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-09 02:40:04,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:40:04,728 INFO L85 PathProgramCache]: Analyzing trace with hash 586226707, now seen corresponding path program 2 times [2024-11-09 02:40:04,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:40:04,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838238415] [2024-11-09 02:40:04,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:04,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:40:04,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:04,843 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 02:40:04,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:40:04,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838238415] [2024-11-09 02:40:04,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838238415] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:40:04,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:40:04,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:40:04,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980315932] [2024-11-09 02:40:04,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:40:04,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:40:04,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:40:04,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:40:04,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:40:04,848 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-09 02:40:04,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 56 transitions, 283 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 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) [2024-11-09 02:40:04,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:40:04,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-09 02:40:04,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:40:05,989 INFO L124 PetriNetUnfolderBase]: 12943/15646 cut-off events. [2024-11-09 02:40:05,989 INFO L125 PetriNetUnfolderBase]: For 39573/39573 co-relation queries the response was YES. [2024-11-09 02:40:06,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65404 conditions, 15646 events. 12943/15646 cut-off events. For 39573/39573 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 57566 event pairs, 942 based on Foata normal form. 404/15898 useless extension candidates. Maximal degree in co-relation 45945. Up to 10371 conditions per place. [2024-11-09 02:40:06,104 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 124 selfloop transitions, 6 changer transitions 0/137 dead transitions. [2024-11-09 02:40:06,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 137 transitions, 1026 flow [2024-11-09 02:40:06,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:40:06,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:40:06,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 146 transitions. [2024-11-09 02:40:06,106 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6347826086956522 [2024-11-09 02:40:06,106 INFO L175 Difference]: Start difference. First operand has 76 places, 56 transitions, 283 flow. Second operand 5 states and 146 transitions. [2024-11-09 02:40:06,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 137 transitions, 1026 flow [2024-11-09 02:40:06,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 137 transitions, 1019 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-09 02:40:06,185 INFO L231 Difference]: Finished difference. Result has 80 places, 59 transitions, 317 flow [2024-11-09 02:40:06,185 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=317, PETRI_PLACES=80, PETRI_TRANSITIONS=59} [2024-11-09 02:40:06,185 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 28 predicate places. [2024-11-09 02:40:06,186 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 59 transitions, 317 flow [2024-11-09 02:40:06,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 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) [2024-11-09 02:40:06,186 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:40:06,186 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] [2024-11-09 02:40:06,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 02:40:06,186 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-09 02:40:06,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:40:06,187 INFO L85 PathProgramCache]: Analyzing trace with hash -2022024224, now seen corresponding path program 1 times [2024-11-09 02:40:06,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:40:06,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409042511] [2024-11-09 02:40:06,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:06,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:40:06,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:06,855 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:40:06,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:40:06,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409042511] [2024-11-09 02:40:06,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409042511] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:40:06,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317887753] [2024-11-09 02:40:06,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:06,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:40:06,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:40:06,860 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:40:06,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 02:40:07,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:07,272 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-09 02:40:07,276 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:40:52,977 WARN L286 SmtUtils]: Spent 8.24s on a formula simplification that was a NOOP. DAG size: 35 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)