./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-theta/unwind2-100.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-theta/unwind2-100.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7857262d4d8d027aa598d94064d6edf426fece06c8ec09601338aa41711d7f37 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 01:57:51,785 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 01:57:51,846 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 01:57:51,849 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 01:57:51,853 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 01:57:51,880 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 01:57:51,881 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 01:57:51,881 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 01:57:51,881 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 01:57:51,882 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 01:57:51,882 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 01:57:51,882 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 01:57:51,882 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 01:57:51,883 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 01:57:51,883 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 01:57:51,883 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 01:57:51,883 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 01:57:51,884 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 01:57:51,884 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 01:57:51,884 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 01:57:51,884 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 01:57:51,885 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 01:57:51,885 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 01:57:51,885 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 01:57:51,886 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 01:57:51,886 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 01:57:51,886 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 01:57:51,886 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 01:57:51,886 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 01:57:51,887 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 01:57:51,887 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 01:57:51,887 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 01:57:51,889 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:57:51,889 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 01:57:51,890 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 01:57:51,890 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 01:57:51,890 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 01:57:51,890 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 01:57:51,890 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 01:57:51,890 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 01:57:51,891 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 01:57:51,891 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 01:57:51,891 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7857262d4d8d027aa598d94064d6edf426fece06c8ec09601338aa41711d7f37 [2024-11-19 01:57:52,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 01:57:52,109 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 01:57:52,113 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 01:57:52,114 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 01:57:52,114 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 01:57:52,115 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/unwind2-100.i [2024-11-19 01:57:53,386 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 01:57:53,575 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 01:57:53,576 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind2-100.i [2024-11-19 01:57:53,588 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82740ed77/2619fd0b13ed412eac67f06a223195d4/FLAG6c122c3bb [2024-11-19 01:57:53,600 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82740ed77/2619fd0b13ed412eac67f06a223195d4 [2024-11-19 01:57:53,602 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 01:57:53,603 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 01:57:53,605 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 01:57:53,605 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 01:57:53,609 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 01:57:53,609 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:57:53" (1/1) ... [2024-11-19 01:57:53,610 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ce8c03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:57:53, skipping insertion in model container [2024-11-19 01:57:53,610 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:57:53" (1/1) ... [2024-11-19 01:57:53,653 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 01:57:53,956 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind2-100.i[33026,33039] [2024-11-19 01:57:53,974 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:57:53,982 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 01:57:54,021 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind2-100.i[33026,33039] [2024-11-19 01:57:54,024 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:57:54,060 INFO L204 MainTranslator]: Completed translation [2024-11-19 01:57:54,061 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:57:54 WrapperNode [2024-11-19 01:57:54,061 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 01:57:54,062 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 01:57:54,062 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 01:57:54,062 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 01:57:54,068 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:57:54" (1/1) ... [2024-11-19 01:57:54,078 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:57:54" (1/1) ... [2024-11-19 01:57:54,102 INFO L138 Inliner]: procedures = 169, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 81 [2024-11-19 01:57:54,103 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 01:57:54,104 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 01:57:54,104 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 01:57:54,104 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 01:57:54,113 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:57:54" (1/1) ... [2024-11-19 01:57:54,114 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:57:54" (1/1) ... [2024-11-19 01:57:54,118 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:57:54" (1/1) ... [2024-11-19 01:57:54,136 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]. [2024-11-19 01:57:54,137 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:57:54" (1/1) ... [2024-11-19 01:57:54,137 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:57:54" (1/1) ... [2024-11-19 01:57:54,145 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:57:54" (1/1) ... [2024-11-19 01:57:54,148 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:57:54" (1/1) ... [2024-11-19 01:57:54,150 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:57:54" (1/1) ... [2024-11-19 01:57:54,155 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:57:54" (1/1) ... [2024-11-19 01:57:54,157 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 01:57:54,159 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 01:57:54,159 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 01:57:54,159 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 01:57:54,160 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:57:54" (1/1) ... [2024-11-19 01:57:54,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:57:54,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:57:54,189 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) [2024-11-19 01:57:54,191 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 [2024-11-19 01:57:54,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 01:57:54,227 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2024-11-19 01:57:54,227 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2024-11-19 01:57:54,227 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-11-19 01:57:54,228 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-11-19 01:57:54,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 01:57:54,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 01:57:54,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 01:57:54,232 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 01:57:54,379 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 01:57:54,381 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 01:57:54,490 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 01:57:54,490 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 01:57:54,569 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 01:57:54,570 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-19 01:57:54,570 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:57:54 BoogieIcfgContainer [2024-11-19 01:57:54,570 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 01:57:54,572 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 01:57:54,572 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 01:57:54,575 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 01:57:54,575 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:57:53" (1/3) ... [2024-11-19 01:57:54,576 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42bfe59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:57:54, skipping insertion in model container [2024-11-19 01:57:54,576 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:57:54" (2/3) ... [2024-11-19 01:57:54,576 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42bfe59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:57:54, skipping insertion in model container [2024-11-19 01:57:54,576 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:57:54" (3/3) ... [2024-11-19 01:57:54,577 INFO L112 eAbstractionObserver]: Analyzing ICFG unwind2-100.i [2024-11-19 01:57:54,591 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 01:57:54,592 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-19 01:57:54,592 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 01:57:54,623 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-19 01:57:54,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 30 transitions, 74 flow [2024-11-19 01:57:54,679 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2024-11-19 01:57:54,679 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 01:57:54,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 28 events. 4/28 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 34 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 25. Up to 2 conditions per place. [2024-11-19 01:57:54,682 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 30 transitions, 74 flow [2024-11-19 01:57:54,684 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 26 transitions, 61 flow [2024-11-19 01:57:54,694 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 01:57:54,699 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;@4ad63649, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 01:57:54,699 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-19 01:57:54,704 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 01:57:54,704 INFO L124 PetriNetUnfolderBase]: 3/17 cut-off events. [2024-11-19 01:57:54,704 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 01:57:54,707 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:57:54,708 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:57:54,708 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-19 01:57:54,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:57:54,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1841696643, now seen corresponding path program 1 times [2024-11-19 01:57:54,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:57:54,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378388493] [2024-11-19 01:57:54,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:57:54,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:57:54,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:57:55,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:57:55,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:57:55,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378388493] [2024-11-19 01:57:55,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378388493] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:57:55,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:57:55,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:57:55,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531028851] [2024-11-19 01:57:55,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:57:55,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 01:57:55,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:57:55,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 01:57:55,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 01:57:55,073 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-11-19 01:57:55,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 61 flow. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 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) [2024-11-19 01:57:55,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:57:55,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-11-19 01:57:55,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:57:55,302 INFO L124 PetriNetUnfolderBase]: 211/450 cut-off events. [2024-11-19 01:57:55,302 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-19 01:57:55,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 840 conditions, 450 events. 211/450 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2194 event pairs, 26 based on Foata normal form. 48/420 useless extension candidates. Maximal degree in co-relation 780. Up to 153 conditions per place. [2024-11-19 01:57:55,308 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 49 selfloop transitions, 8 changer transitions 0/63 dead transitions. [2024-11-19 01:57:55,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 63 transitions, 261 flow [2024-11-19 01:57:55,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:57:55,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 01:57:55,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-11-19 01:57:55,320 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.580952380952381 [2024-11-19 01:57:55,321 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 61 flow. Second operand 7 states and 122 transitions. [2024-11-19 01:57:55,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 63 transitions, 261 flow [2024-11-19 01:57:55,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 63 transitions, 251 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 01:57:55,326 INFO L231 Difference]: Finished difference. Result has 35 places, 29 transitions, 101 flow [2024-11-19 01:57:55,327 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=101, PETRI_PLACES=35, PETRI_TRANSITIONS=29} [2024-11-19 01:57:55,330 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 6 predicate places. [2024-11-19 01:57:55,330 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 101 flow [2024-11-19 01:57:55,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 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) [2024-11-19 01:57:55,331 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:57:55,331 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:57:55,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 01:57:55,331 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-19 01:57:55,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:57:55,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1257990492, now seen corresponding path program 1 times [2024-11-19 01:57:55,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:57:55,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785821689] [2024-11-19 01:57:55,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:57:55,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:57:55,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:57:55,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:57:55,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:57:55,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785821689] [2024-11-19 01:57:55,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785821689] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:57:55,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564711675] [2024-11-19 01:57:55,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:57:55,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:57:55,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:57:55,457 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) [2024-11-19 01:57:55,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 01:57:55,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:57:55,513 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 01:57:55,516 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:57:55,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:57:55,578 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:57:55,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:57:55,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564711675] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:57:55,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:57:55,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-19 01:57:55,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941749124] [2024-11-19 01:57:55,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:57:55,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 01:57:55,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:57:55,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 01:57:55,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-11-19 01:57:55,662 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-11-19 01:57:55,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 101 flow. Second operand has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 states have internal predecessors, (129), 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) [2024-11-19 01:57:55,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:57:55,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-11-19 01:57:55,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:57:56,035 INFO L124 PetriNetUnfolderBase]: 307/630 cut-off events. [2024-11-19 01:57:56,036 INFO L125 PetriNetUnfolderBase]: For 140/140 co-relation queries the response was YES. [2024-11-19 01:57:56,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1550 conditions, 630 events. 307/630 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3138 event pairs, 26 based on Foata normal form. 0/534 useless extension candidates. Maximal degree in co-relation 1400. Up to 153 conditions per place. [2024-11-19 01:57:56,043 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 88 selfloop transitions, 17 changer transitions 0/111 dead transitions. [2024-11-19 01:57:56,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 111 transitions, 533 flow [2024-11-19 01:57:56,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 01:57:56,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-19 01:57:56,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 215 transitions. [2024-11-19 01:57:56,049 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5512820512820513 [2024-11-19 01:57:56,049 INFO L175 Difference]: Start difference. First operand has 35 places, 29 transitions, 101 flow. Second operand 13 states and 215 transitions. [2024-11-19 01:57:56,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 111 transitions, 533 flow [2024-11-19 01:57:56,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 111 transitions, 519 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-19 01:57:56,058 INFO L231 Difference]: Finished difference. Result has 50 places, 39 transitions, 212 flow [2024-11-19 01:57:56,058 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=212, PETRI_PLACES=50, PETRI_TRANSITIONS=39} [2024-11-19 01:57:56,059 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 21 predicate places. [2024-11-19 01:57:56,059 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 39 transitions, 212 flow [2024-11-19 01:57:56,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 states have internal predecessors, (129), 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) [2024-11-19 01:57:56,060 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:57:56,060 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:57:56,081 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 01:57:56,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:57:56,262 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-19 01:57:56,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:57:56,263 INFO L85 PathProgramCache]: Analyzing trace with hash -592937479, now seen corresponding path program 1 times [2024-11-19 01:57:56,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:57:56,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555731061] [2024-11-19 01:57:56,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:57:56,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:57:56,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:57:56,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:57:56,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:57:56,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555731061] [2024-11-19 01:57:56,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555731061] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:57:56,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:57:56,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:57:56,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303012558] [2024-11-19 01:57:56,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:57:56,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 01:57:56,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:57:56,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 01:57:56,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 01:57:56,339 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-11-19 01:57:56,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 39 transitions, 212 flow. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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) [2024-11-19 01:57:56,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:57:56,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-11-19 01:57:56,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:57:56,497 INFO L124 PetriNetUnfolderBase]: 363/760 cut-off events. [2024-11-19 01:57:56,498 INFO L125 PetriNetUnfolderBase]: For 1257/1257 co-relation queries the response was YES. [2024-11-19 01:57:56,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2206 conditions, 760 events. 363/760 cut-off events. For 1257/1257 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3936 event pairs, 86 based on Foata normal form. 0/672 useless extension candidates. Maximal degree in co-relation 1460. Up to 245 conditions per place. [2024-11-19 01:57:56,504 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 66 selfloop transitions, 13 changer transitions 0/85 dead transitions. [2024-11-19 01:57:56,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 85 transitions, 662 flow [2024-11-19 01:57:56,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:57:56,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 01:57:56,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 112 transitions. [2024-11-19 01:57:56,505 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-11-19 01:57:56,505 INFO L175 Difference]: Start difference. First operand has 50 places, 39 transitions, 212 flow. Second operand 7 states and 112 transitions. [2024-11-19 01:57:56,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 85 transitions, 662 flow [2024-11-19 01:57:56,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 85 transitions, 542 flow, removed 45 selfloop flow, removed 5 redundant places. [2024-11-19 01:57:56,516 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 231 flow [2024-11-19 01:57:56,516 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=231, PETRI_PLACES=54, PETRI_TRANSITIONS=44} [2024-11-19 01:57:56,517 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 25 predicate places. [2024-11-19 01:57:56,518 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 231 flow [2024-11-19 01:57:56,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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) [2024-11-19 01:57:56,518 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:57:56,518 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:57:56,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 01:57:56,518 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-19 01:57:56,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:57:56,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1201223248, now seen corresponding path program 1 times [2024-11-19 01:57:56,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:57:56,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388373677] [2024-11-19 01:57:56,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:57:56,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:57:56,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:57:56,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:57:56,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:57:56,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388373677] [2024-11-19 01:57:56,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388373677] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:57:56,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520051780] [2024-11-19 01:57:56,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:57:56,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:57:56,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:57:56,618 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) [2024-11-19 01:57:56,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 01:57:56,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:57:56,676 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 01:57:56,677 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:57:56,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:57:56,718 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:57:56,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:57:56,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520051780] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:57:56,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:57:56,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-19 01:57:56,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304186957] [2024-11-19 01:57:56,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:57:56,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 01:57:56,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:57:56,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 01:57:56,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-11-19 01:57:56,775 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-11-19 01:57:56,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 44 transitions, 231 flow. Second operand has 14 states, 14 states have (on average 9.5) internal successors, (133), 14 states have internal predecessors, (133), 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) [2024-11-19 01:57:56,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:57:56,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-11-19 01:57:56,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:57:57,100 INFO L124 PetriNetUnfolderBase]: 531/1054 cut-off events. [2024-11-19 01:57:57,100 INFO L125 PetriNetUnfolderBase]: For 1914/1914 co-relation queries the response was YES. [2024-11-19 01:57:57,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3312 conditions, 1054 events. 531/1054 cut-off events. For 1914/1914 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 5598 event pairs, 93 based on Foata normal form. 0/962 useless extension candidates. Maximal degree in co-relation 2981. Up to 245 conditions per place. [2024-11-19 01:57:57,108 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 129 selfloop transitions, 22 changer transitions 0/157 dead transitions. [2024-11-19 01:57:57,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 157 transitions, 1142 flow [2024-11-19 01:57:57,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 01:57:57,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-19 01:57:57,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 212 transitions. [2024-11-19 01:57:57,110 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5435897435897435 [2024-11-19 01:57:57,110 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 231 flow. Second operand 13 states and 212 transitions. [2024-11-19 01:57:57,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 157 transitions, 1142 flow [2024-11-19 01:57:57,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 157 transitions, 1123 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-19 01:57:57,119 INFO L231 Difference]: Finished difference. Result has 69 places, 54 transitions, 356 flow [2024-11-19 01:57:57,120 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=356, PETRI_PLACES=69, PETRI_TRANSITIONS=54} [2024-11-19 01:57:57,120 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 40 predicate places. [2024-11-19 01:57:57,120 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 54 transitions, 356 flow [2024-11-19 01:57:57,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.5) internal successors, (133), 14 states have internal predecessors, (133), 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) [2024-11-19 01:57:57,121 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:57:57,121 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:57:57,134 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 01:57:57,322 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,SelfDestructingSolverStorable3 [2024-11-19 01:57:57,322 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-19 01:57:57,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:57:57,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1929875536, now seen corresponding path program 1 times [2024-11-19 01:57:57,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:57:57,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135107725] [2024-11-19 01:57:57,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:57:57,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:57:57,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:57:57,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:57:57,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:57:57,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135107725] [2024-11-19 01:57:57,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135107725] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:57:57,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:57:57,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:57:57,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652072165] [2024-11-19 01:57:57,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:57:57,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 01:57:57,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:57:57,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 01:57:57,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 01:57:57,398 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-11-19 01:57:57,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 54 transitions, 356 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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) [2024-11-19 01:57:57,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:57:57,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-11-19 01:57:57,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:57:57,554 INFO L124 PetriNetUnfolderBase]: 555/1112 cut-off events. [2024-11-19 01:57:57,554 INFO L125 PetriNetUnfolderBase]: For 3869/3869 co-relation queries the response was YES. [2024-11-19 01:57:57,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4047 conditions, 1112 events. 555/1112 cut-off events. For 3869/3869 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 6030 event pairs, 121 based on Foata normal form. 16/1066 useless extension candidates. Maximal degree in co-relation 3680. Up to 421 conditions per place. [2024-11-19 01:57:57,563 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 62 selfloop transitions, 15 changer transitions 0/83 dead transitions. [2024-11-19 01:57:57,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 83 transitions, 707 flow [2024-11-19 01:57:57,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 01:57:57,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 01:57:57,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 93 transitions. [2024-11-19 01:57:57,564 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5166666666666667 [2024-11-19 01:57:57,564 INFO L175 Difference]: Start difference. First operand has 69 places, 54 transitions, 356 flow. Second operand 6 states and 93 transitions. [2024-11-19 01:57:57,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 83 transitions, 707 flow [2024-11-19 01:57:57,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 83 transitions, 629 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-11-19 01:57:57,584 INFO L231 Difference]: Finished difference. Result has 70 places, 55 transitions, 344 flow [2024-11-19 01:57:57,584 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=344, PETRI_PLACES=70, PETRI_TRANSITIONS=55} [2024-11-19 01:57:57,585 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 41 predicate places. [2024-11-19 01:57:57,585 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 55 transitions, 344 flow [2024-11-19 01:57:57,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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) [2024-11-19 01:57:57,585 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:57:57,585 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:57:57,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 01:57:57,585 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-19 01:57:57,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:57:57,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1782392078, now seen corresponding path program 1 times [2024-11-19 01:57:57,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:57:57,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458304865] [2024-11-19 01:57:57,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:57:57,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:57:57,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:57:57,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:57:57,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:57:57,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458304865] [2024-11-19 01:57:57,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458304865] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:57:57,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:57:57,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:57:57,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743941892] [2024-11-19 01:57:57,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:57:57,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 01:57:57,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:57:57,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 01:57:57,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 01:57:57,653 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-11-19 01:57:57,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 55 transitions, 344 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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) [2024-11-19 01:57:57,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:57:57,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-11-19 01:57:57,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:57:57,815 INFO L124 PetriNetUnfolderBase]: 580/1166 cut-off events. [2024-11-19 01:57:57,816 INFO L125 PetriNetUnfolderBase]: For 4146/4146 co-relation queries the response was YES. [2024-11-19 01:57:57,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3962 conditions, 1166 events. 580/1166 cut-off events. For 4146/4146 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 6432 event pairs, 117 based on Foata normal form. 17/1117 useless extension candidates. Maximal degree in co-relation 3784. Up to 457 conditions per place. [2024-11-19 01:57:57,825 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 67 selfloop transitions, 15 changer transitions 0/88 dead transitions. [2024-11-19 01:57:57,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 88 transitions, 705 flow [2024-11-19 01:57:57,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 01:57:57,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 01:57:57,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 97 transitions. [2024-11-19 01:57:57,826 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5388888888888889 [2024-11-19 01:57:57,826 INFO L175 Difference]: Start difference. First operand has 70 places, 55 transitions, 344 flow. Second operand 6 states and 97 transitions. [2024-11-19 01:57:57,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 88 transitions, 705 flow [2024-11-19 01:57:57,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 88 transitions, 675 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-11-19 01:57:57,836 INFO L231 Difference]: Finished difference. Result has 73 places, 56 transitions, 363 flow [2024-11-19 01:57:57,836 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=363, PETRI_PLACES=73, PETRI_TRANSITIONS=56} [2024-11-19 01:57:57,836 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 44 predicate places. [2024-11-19 01:57:57,837 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 56 transitions, 363 flow [2024-11-19 01:57:57,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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) [2024-11-19 01:57:57,837 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:57:57,837 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:57:57,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 01:57:57,837 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-19 01:57:57,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:57:57,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1120256573, now seen corresponding path program 2 times [2024-11-19 01:57:57,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:57:57,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274705543] [2024-11-19 01:57:57,838 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:57:57,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:57:57,846 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:57:57,847 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:57:57,925 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:57:57,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:57:57,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274705543] [2024-11-19 01:57:57,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274705543] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:57:57,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55736184] [2024-11-19 01:57:57,926 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:57:57,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:57:57,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:57:57,928 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) [2024-11-19 01:57:57,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 01:57:57,970 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:57:57,970 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:57:57,971 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 01:57:57,972 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:57:58,039 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:57:58,040 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:57:58,129 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:57:58,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55736184] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:57:58,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:57:58,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2024-11-19 01:57:58,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043183947] [2024-11-19 01:57:58,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:57:58,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-19 01:57:58,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:57:58,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-19 01:57:58,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2024-11-19 01:57:58,137 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-11-19 01:57:58,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 56 transitions, 363 flow. Second operand has 23 states, 23 states have (on average 9.130434782608695) internal successors, (210), 23 states have internal predecessors, (210), 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) [2024-11-19 01:57:58,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:57:58,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-11-19 01:57:58,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:57:58,811 INFO L124 PetriNetUnfolderBase]: 934/1778 cut-off events. [2024-11-19 01:57:58,811 INFO L125 PetriNetUnfolderBase]: For 14072/14072 co-relation queries the response was YES. [2024-11-19 01:57:58,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6625 conditions, 1778 events. 934/1778 cut-off events. For 14072/14072 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 9531 event pairs, 93 based on Foata normal form. 240/1948 useless extension candidates. Maximal degree in co-relation 6346. Up to 351 conditions per place. [2024-11-19 01:57:58,824 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 270 selfloop transitions, 40 changer transitions 0/316 dead transitions. [2024-11-19 01:57:58,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 316 transitions, 2588 flow [2024-11-19 01:57:58,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-19 01:57:58,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-19 01:57:58,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 413 transitions. [2024-11-19 01:57:58,827 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5506666666666666 [2024-11-19 01:57:58,827 INFO L175 Difference]: Start difference. First operand has 73 places, 56 transitions, 363 flow. Second operand 25 states and 413 transitions. [2024-11-19 01:57:58,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 316 transitions, 2588 flow [2024-11-19 01:57:58,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 316 transitions, 2457 flow, removed 55 selfloop flow, removed 3 redundant places. [2024-11-19 01:57:58,877 INFO L231 Difference]: Finished difference. Result has 106 places, 74 transitions, 650 flow [2024-11-19 01:57:58,878 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=650, PETRI_PLACES=106, PETRI_TRANSITIONS=74} [2024-11-19 01:57:58,878 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 77 predicate places. [2024-11-19 01:57:58,878 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 74 transitions, 650 flow [2024-11-19 01:57:58,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 9.130434782608695) internal successors, (210), 23 states have internal predecessors, (210), 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) [2024-11-19 01:57:58,878 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:57:58,878 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:57:58,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-19 01:57:59,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:57:59,084 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-19 01:57:59,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:57:59,084 INFO L85 PathProgramCache]: Analyzing trace with hash 2033274663, now seen corresponding path program 1 times [2024-11-19 01:57:59,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:57:59,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612571310] [2024-11-19 01:57:59,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:57:59,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:57:59,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:57:59,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:57:59,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:57:59,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612571310] [2024-11-19 01:57:59,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612571310] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:57:59,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902508624] [2024-11-19 01:57:59,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:57:59,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:57:59,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:57:59,151 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:57:59,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 01:57:59,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:57:59,195 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 01:57:59,196 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:57:59,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:57:59,237 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:57:59,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:57:59,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902508624] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:57:59,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:57:59,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-19 01:57:59,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938528911] [2024-11-19 01:57:59,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:57:59,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 01:57:59,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:57:59,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 01:57:59,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-11-19 01:57:59,290 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-11-19 01:57:59,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 74 transitions, 650 flow. Second operand has 14 states, 14 states have (on average 9.785714285714286) internal successors, (137), 14 states have internal predecessors, (137), 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) [2024-11-19 01:57:59,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:57:59,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-11-19 01:57:59,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:57:59,638 INFO L124 PetriNetUnfolderBase]: 1006/1922 cut-off events. [2024-11-19 01:57:59,638 INFO L125 PetriNetUnfolderBase]: For 22258/22258 co-relation queries the response was YES. [2024-11-19 01:57:59,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8322 conditions, 1922 events. 1006/1922 cut-off events. For 22258/22258 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 10666 event pairs, 202 based on Foata normal form. 48/1892 useless extension candidates. Maximal degree in co-relation 6408. Up to 746 conditions per place. [2024-11-19 01:57:59,653 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 108 selfloop transitions, 24 changer transitions 0/138 dead transitions. [2024-11-19 01:57:59,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 138 transitions, 1426 flow [2024-11-19 01:57:59,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 01:57:59,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 01:57:59,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 137 transitions. [2024-11-19 01:57:59,655 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5074074074074074 [2024-11-19 01:57:59,655 INFO L175 Difference]: Start difference. First operand has 106 places, 74 transitions, 650 flow. Second operand 9 states and 137 transitions. [2024-11-19 01:57:59,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 138 transitions, 1426 flow [2024-11-19 01:57:59,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 138 transitions, 1186 flow, removed 84 selfloop flow, removed 12 redundant places. [2024-11-19 01:57:59,689 INFO L231 Difference]: Finished difference. Result has 105 places, 77 transitions, 574 flow [2024-11-19 01:57:59,690 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=574, PETRI_PLACES=105, PETRI_TRANSITIONS=77} [2024-11-19 01:57:59,690 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 76 predicate places. [2024-11-19 01:57:59,690 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 77 transitions, 574 flow [2024-11-19 01:57:59,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.785714285714286) internal successors, (137), 14 states have internal predecessors, (137), 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) [2024-11-19 01:57:59,691 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:57:59,691 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:57:59,706 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 01:57:59,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:57:59,895 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-19 01:57:59,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:57:59,895 INFO L85 PathProgramCache]: Analyzing trace with hash 2114078429, now seen corresponding path program 1 times [2024-11-19 01:57:59,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:57:59,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736790287] [2024-11-19 01:57:59,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:57:59,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:57:59,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:57:59,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:57:59,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:57:59,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736790287] [2024-11-19 01:57:59,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736790287] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:57:59,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411596816] [2024-11-19 01:57:59,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:57:59,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:57:59,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:57:59,969 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:57:59,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 01:58:00,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:58:00,023 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 01:58:00,024 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:58:00,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:58:00,071 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:58:00,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:58:00,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411596816] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:58:00,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:58:00,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-19 01:58:00,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306672418] [2024-11-19 01:58:00,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:58:00,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 01:58:00,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:58:00,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 01:58:00,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-11-19 01:58:00,119 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-11-19 01:58:00,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 77 transitions, 574 flow. Second operand has 14 states, 14 states have (on average 9.785714285714286) internal successors, (137), 14 states have internal predecessors, (137), 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) [2024-11-19 01:58:00,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:58:00,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-11-19 01:58:00,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:58:00,454 INFO L124 PetriNetUnfolderBase]: 1135/2126 cut-off events. [2024-11-19 01:58:00,454 INFO L125 PetriNetUnfolderBase]: For 19327/19327 co-relation queries the response was YES. [2024-11-19 01:58:00,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8272 conditions, 2126 events. 1135/2126 cut-off events. For 19327/19327 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 11826 event pairs, 114 based on Foata normal form. 87/2141 useless extension candidates. Maximal degree in co-relation 7974. Up to 819 conditions per place. [2024-11-19 01:58:00,468 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 136 selfloop transitions, 24 changer transitions 0/166 dead transitions. [2024-11-19 01:58:00,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 166 transitions, 1535 flow [2024-11-19 01:58:00,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 01:58:00,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 01:58:00,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-11-19 01:58:00,469 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-11-19 01:58:00,469 INFO L175 Difference]: Start difference. First operand has 105 places, 77 transitions, 574 flow. Second operand 9 states and 144 transitions. [2024-11-19 01:58:00,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 166 transitions, 1535 flow [2024-11-19 01:58:00,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 166 transitions, 1457 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-11-19 01:58:00,507 INFO L231 Difference]: Finished difference. Result has 111 places, 80 transitions, 594 flow [2024-11-19 01:58:00,508 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=594, PETRI_PLACES=111, PETRI_TRANSITIONS=80} [2024-11-19 01:58:00,508 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 82 predicate places. [2024-11-19 01:58:00,508 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 80 transitions, 594 flow [2024-11-19 01:58:00,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.785714285714286) internal successors, (137), 14 states have internal predecessors, (137), 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) [2024-11-19 01:58:00,509 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:58:00,510 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:58:00,526 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 01:58:00,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:58:00,710 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-19 01:58:00,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:58:00,711 INFO L85 PathProgramCache]: Analyzing trace with hash -4639815, now seen corresponding path program 2 times [2024-11-19 01:58:00,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:58:00,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811401219] [2024-11-19 01:58:00,711 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:58:00,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:58:00,718 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:58:00,719 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:58:00,790 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:58:00,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:58:00,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811401219] [2024-11-19 01:58:00,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811401219] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:58:00,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464572896] [2024-11-19 01:58:00,790 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:58:00,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:58:00,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:58:00,792 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:58:00,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 01:58:00,835 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:58:00,835 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:58:00,836 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 01:58:00,837 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:58:00,898 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:58:00,899 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:58:00,981 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:58:00,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464572896] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:58:00,982 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:58:00,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2024-11-19 01:58:00,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343116406] [2024-11-19 01:58:00,982 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:58:00,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-19 01:58:00,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:58:00,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-19 01:58:00,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2024-11-19 01:58:00,992 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-11-19 01:58:00,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 80 transitions, 594 flow. Second operand has 23 states, 23 states have (on average 9.304347826086957) internal successors, (214), 23 states have internal predecessors, (214), 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) [2024-11-19 01:58:00,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:58:00,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-11-19 01:58:00,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:58:01,703 INFO L124 PetriNetUnfolderBase]: 1759/3257 cut-off events. [2024-11-19 01:58:01,703 INFO L125 PetriNetUnfolderBase]: For 55632/55632 co-relation queries the response was YES. [2024-11-19 01:58:01,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13328 conditions, 3257 events. 1759/3257 cut-off events. For 55632/55632 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 18823 event pairs, 279 based on Foata normal form. 420/3574 useless extension candidates. Maximal degree in co-relation 10848. Up to 697 conditions per place. [2024-11-19 01:58:01,732 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 441 selfloop transitions, 46 changer transitions 0/493 dead transitions. [2024-11-19 01:58:01,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 493 transitions, 4418 flow [2024-11-19 01:58:01,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-19 01:58:01,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-19 01:58:01,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 410 transitions. [2024-11-19 01:58:01,734 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5466666666666666 [2024-11-19 01:58:01,734 INFO L175 Difference]: Start difference. First operand has 111 places, 80 transitions, 594 flow. Second operand 25 states and 410 transitions. [2024-11-19 01:58:01,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 493 transitions, 4418 flow [2024-11-19 01:58:01,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 493 transitions, 4308 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-11-19 01:58:01,804 INFO L231 Difference]: Finished difference. Result has 142 places, 98 transitions, 858 flow [2024-11-19 01:58:01,804 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=858, PETRI_PLACES=142, PETRI_TRANSITIONS=98} [2024-11-19 01:58:01,805 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 113 predicate places. [2024-11-19 01:58:01,805 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 98 transitions, 858 flow [2024-11-19 01:58:01,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 9.304347826086957) internal successors, (214), 23 states have internal predecessors, (214), 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) [2024-11-19 01:58:01,805 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:58:01,805 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:58:01,821 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 01:58:02,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:58:02,006 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-19 01:58:02,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:58:02,007 INFO L85 PathProgramCache]: Analyzing trace with hash 974032438, now seen corresponding path program 2 times [2024-11-19 01:58:02,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:58:02,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057643326] [2024-11-19 01:58:02,009 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:58:02,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:58:02,016 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:58:02,016 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:58:02,110 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:58:02,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:58:02,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057643326] [2024-11-19 01:58:02,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057643326] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:58:02,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513558832] [2024-11-19 01:58:02,111 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:58:02,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:58:02,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:58:02,113 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:58:02,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 01:58:02,159 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:58:02,159 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:58:02,160 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 01:58:02,161 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:58:02,230 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:58:02,230 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:58:02,365 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:58:02,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513558832] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:58:02,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:58:02,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2024-11-19 01:58:02,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989937946] [2024-11-19 01:58:02,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:58:02,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-19 01:58:02,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:58:02,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-19 01:58:02,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2024-11-19 01:58:02,375 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-11-19 01:58:02,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 98 transitions, 858 flow. Second operand has 23 states, 23 states have (on average 9.478260869565217) internal successors, (218), 23 states have internal predecessors, (218), 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) [2024-11-19 01:58:02,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:58:02,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-11-19 01:58:02,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:58:03,033 INFO L124 PetriNetUnfolderBase]: 2011/3641 cut-off events. [2024-11-19 01:58:03,034 INFO L125 PetriNetUnfolderBase]: For 88256/88256 co-relation queries the response was YES. [2024-11-19 01:58:03,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17399 conditions, 3641 events. 2011/3641 cut-off events. For 88256/88256 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 21117 event pairs, 234 based on Foata normal form. 168/3718 useless extension candidates. Maximal degree in co-relation 16736. Up to 1406 conditions per place. [2024-11-19 01:58:03,062 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 237 selfloop transitions, 36 changer transitions 0/279 dead transitions. [2024-11-19 01:58:03,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 279 transitions, 3392 flow [2024-11-19 01:58:03,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 01:58:03,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-19 01:58:03,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 224 transitions. [2024-11-19 01:58:03,063 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49777777777777776 [2024-11-19 01:58:03,063 INFO L175 Difference]: Start difference. First operand has 142 places, 98 transitions, 858 flow. Second operand 15 states and 224 transitions. [2024-11-19 01:58:03,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 279 transitions, 3392 flow [2024-11-19 01:58:03,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 279 transitions, 2600 flow, removed 312 selfloop flow, removed 12 redundant places. [2024-11-19 01:58:03,209 INFO L231 Difference]: Finished difference. Result has 150 places, 104 transitions, 836 flow [2024-11-19 01:58:03,210 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=836, PETRI_PLACES=150, PETRI_TRANSITIONS=104} [2024-11-19 01:58:03,210 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 121 predicate places. [2024-11-19 01:58:03,210 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 104 transitions, 836 flow [2024-11-19 01:58:03,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 9.478260869565217) internal successors, (218), 23 states have internal predecessors, (218), 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) [2024-11-19 01:58:03,211 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:58:03,211 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:58:03,227 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 01:58:03,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:58:03,412 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-19 01:58:03,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:58:03,412 INFO L85 PathProgramCache]: Analyzing trace with hash -708163506, now seen corresponding path program 2 times [2024-11-19 01:58:03,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:58:03,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569160154] [2024-11-19 01:58:03,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:58:03,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:58:03,418 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:58:03,419 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:58:03,562 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:58:03,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:58:03,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569160154] [2024-11-19 01:58:03,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569160154] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:58:03,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263242839] [2024-11-19 01:58:03,563 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:58:03,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:58:03,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:58:03,564 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:58:03,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 01:58:03,612 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:58:03,612 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:58:03,613 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 01:58:03,613 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:58:03,681 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:58:03,681 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:58:03,776 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:58:03,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263242839] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:58:03,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:58:03,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2024-11-19 01:58:03,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826220507] [2024-11-19 01:58:03,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:58:03,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-19 01:58:03,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:58:03,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-19 01:58:03,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2024-11-19 01:58:03,785 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-11-19 01:58:03,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 104 transitions, 836 flow. Second operand has 23 states, 23 states have (on average 9.478260869565217) internal successors, (218), 23 states have internal predecessors, (218), 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) [2024-11-19 01:58:03,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:58:03,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-11-19 01:58:03,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:58:04,637 INFO L124 PetriNetUnfolderBase]: 2269/4061 cut-off events. [2024-11-19 01:58:04,638 INFO L125 PetriNetUnfolderBase]: For 104823/104823 co-relation queries the response was YES. [2024-11-19 01:58:04,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17812 conditions, 4061 events. 2269/4061 cut-off events. For 104823/104823 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 23575 event pairs, 275 based on Foata normal form. 174/4150 useless extension candidates. Maximal degree in co-relation 17481. Up to 1821 conditions per place. [2024-11-19 01:58:04,670 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 256 selfloop transitions, 36 changer transitions 0/298 dead transitions. [2024-11-19 01:58:04,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 298 transitions, 2985 flow [2024-11-19 01:58:04,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 01:58:04,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-19 01:58:04,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 237 transitions. [2024-11-19 01:58:04,673 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5266666666666666 [2024-11-19 01:58:04,673 INFO L175 Difference]: Start difference. First operand has 150 places, 104 transitions, 836 flow. Second operand 15 states and 237 transitions. [2024-11-19 01:58:04,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 298 transitions, 2985 flow [2024-11-19 01:58:04,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 298 transitions, 2845 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-11-19 01:58:04,839 INFO L231 Difference]: Finished difference. Result has 162 places, 110 transitions, 872 flow [2024-11-19 01:58:04,840 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=872, PETRI_PLACES=162, PETRI_TRANSITIONS=110} [2024-11-19 01:58:04,840 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 133 predicate places. [2024-11-19 01:58:04,840 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 110 transitions, 872 flow [2024-11-19 01:58:04,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 9.478260869565217) internal successors, (218), 23 states have internal predecessors, (218), 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) [2024-11-19 01:58:04,841 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:58:04,841 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:58:04,856 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-19 01:58:05,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-19 01:58:05,041 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-19 01:58:05,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:58:05,042 INFO L85 PathProgramCache]: Analyzing trace with hash -667195613, now seen corresponding path program 3 times [2024-11-19 01:58:05,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:58:05,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80987454] [2024-11-19 01:58:05,042 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:58:05,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:58:05,052 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:58:05,052 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:58:05,127 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-19 01:58:05,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:58:05,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80987454] [2024-11-19 01:58:05,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80987454] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:58:05,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106958463] [2024-11-19 01:58:05,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:58:05,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:58:05,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:58:05,130 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:58:05,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 01:58:05,176 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:58:05,176 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:58:05,177 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 01:58:05,178 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:58:05,215 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-19 01:58:05,215 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 01:58:05,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106958463] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:58:05,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 01:58:05,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-19 01:58:05,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698529373] [2024-11-19 01:58:05,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:58:05,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 01:58:05,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:58:05,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 01:58:05,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-19 01:58:05,225 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-11-19 01:58:05,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 110 transitions, 872 flow. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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) [2024-11-19 01:58:05,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:58:05,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-11-19 01:58:05,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:58:05,869 INFO L124 PetriNetUnfolderBase]: 2451/4403 cut-off events. [2024-11-19 01:58:05,869 INFO L125 PetriNetUnfolderBase]: For 98071/98071 co-relation queries the response was YES. [2024-11-19 01:58:05,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19694 conditions, 4403 events. 2451/4403 cut-off events. For 98071/98071 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 25882 event pairs, 650 based on Foata normal form. 82/4432 useless extension candidates. Maximal degree in co-relation 19027. Up to 1557 conditions per place. [2024-11-19 01:58:05,899 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 210 selfloop transitions, 32 changer transitions 7/254 dead transitions. [2024-11-19 01:58:05,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 254 transitions, 2737 flow [2024-11-19 01:58:05,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 01:58:05,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 01:58:05,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-11-19 01:58:05,900 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5407407407407407 [2024-11-19 01:58:05,900 INFO L175 Difference]: Start difference. First operand has 162 places, 110 transitions, 872 flow. Second operand 9 states and 146 transitions. [2024-11-19 01:58:05,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 254 transitions, 2737 flow [2024-11-19 01:58:06,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 254 transitions, 2347 flow, removed 148 selfloop flow, removed 8 redundant places. [2024-11-19 01:58:06,064 INFO L231 Difference]: Finished difference. Result has 164 places, 116 transitions, 964 flow [2024-11-19 01:58:06,064 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=738, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=964, PETRI_PLACES=164, PETRI_TRANSITIONS=116} [2024-11-19 01:58:06,064 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 135 predicate places. [2024-11-19 01:58:06,065 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 116 transitions, 964 flow [2024-11-19 01:58:06,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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) [2024-11-19 01:58:06,065 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:58:06,065 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:58:06,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-19 01:58:06,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-19 01:58:06,266 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-19 01:58:06,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:58:06,266 INFO L85 PathProgramCache]: Analyzing trace with hash 30253145, now seen corresponding path program 3 times [2024-11-19 01:58:06,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:58:06,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442220066] [2024-11-19 01:58:06,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:58:06,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:58:06,272 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:58:06,272 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:58:06,334 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-19 01:58:06,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:58:06,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442220066] [2024-11-19 01:58:06,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442220066] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:58:06,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284148661] [2024-11-19 01:58:06,335 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:58:06,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:58:06,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:58:06,337 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:58:06,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 01:58:06,379 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:58:06,380 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:58:06,380 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 01:58:06,381 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:58:06,413 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-19 01:58:06,413 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 01:58:06,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284148661] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:58:06,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 01:58:06,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-19 01:58:06,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846217601] [2024-11-19 01:58:06,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:58:06,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 01:58:06,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:58:06,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 01:58:06,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-19 01:58:06,426 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-11-19 01:58:06,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 116 transitions, 964 flow. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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) [2024-11-19 01:58:06,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:58:06,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-11-19 01:58:06,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:58:07,071 INFO L124 PetriNetUnfolderBase]: 2581/4529 cut-off events. [2024-11-19 01:58:07,072 INFO L125 PetriNetUnfolderBase]: For 116665/116665 co-relation queries the response was YES. [2024-11-19 01:58:07,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20556 conditions, 4529 events. 2581/4529 cut-off events. For 116665/116665 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 25975 event pairs, 680 based on Foata normal form. 89/4616 useless extension candidates. Maximal degree in co-relation 19916. Up to 1677 conditions per place. [2024-11-19 01:58:07,103 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 104 selfloop transitions, 7 changer transitions 145/261 dead transitions. [2024-11-19 01:58:07,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 261 transitions, 2776 flow [2024-11-19 01:58:07,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 01:58:07,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 01:58:07,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-11-19 01:58:07,105 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5296296296296297 [2024-11-19 01:58:07,105 INFO L175 Difference]: Start difference. First operand has 164 places, 116 transitions, 964 flow. Second operand 9 states and 143 transitions. [2024-11-19 01:58:07,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 261 transitions, 2776 flow [2024-11-19 01:58:07,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 261 transitions, 2322 flow, removed 220 selfloop flow, removed 2 redundant places. [2024-11-19 01:58:07,411 INFO L231 Difference]: Finished difference. Result has 174 places, 72 transitions, 519 flow [2024-11-19 01:58:07,411 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=849, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=519, PETRI_PLACES=174, PETRI_TRANSITIONS=72} [2024-11-19 01:58:07,412 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 145 predicate places. [2024-11-19 01:58:07,412 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 72 transitions, 519 flow [2024-11-19 01:58:07,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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) [2024-11-19 01:58:07,412 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:58:07,412 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:58:07,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-19 01:58:07,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-19 01:58:07,613 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-19 01:58:07,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:58:07,614 INFO L85 PathProgramCache]: Analyzing trace with hash 271135504, now seen corresponding path program 3 times [2024-11-19 01:58:07,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:58:07,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284466604] [2024-11-19 01:58:07,614 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:58:07,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:58:07,632 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-19 01:58:07,633 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:58:07,809 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:58:07,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:58:07,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284466604] [2024-11-19 01:58:07,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284466604] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:58:07,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143376801] [2024-11-19 01:58:07,810 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:58:07,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:58:07,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:58:07,814 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:58:07,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 01:58:07,870 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-19 01:58:07,870 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:58:07,871 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-19 01:58:07,940 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:58:08,110 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:58:08,110 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:58:08,355 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:58:08,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143376801] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:58:08,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:58:08,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 40 [2024-11-19 01:58:08,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294139230] [2024-11-19 01:58:08,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:58:08,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-19 01:58:08,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:58:08,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-19 01:58:08,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=565, Invalid=1075, Unknown=0, NotChecked=0, Total=1640 [2024-11-19 01:58:08,365 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-11-19 01:58:08,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 72 transitions, 519 flow. Second operand has 41 states, 41 states have (on average 9.268292682926829) internal successors, (380), 41 states have internal predecessors, (380), 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) [2024-11-19 01:58:08,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:58:08,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-11-19 01:58:08,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:58:09,404 INFO L124 PetriNetUnfolderBase]: 1771/3205 cut-off events. [2024-11-19 01:58:09,405 INFO L125 PetriNetUnfolderBase]: For 67122/67122 co-relation queries the response was YES. [2024-11-19 01:58:09,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14164 conditions, 3205 events. 1771/3205 cut-off events. For 67122/67122 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 16210 event pairs, 421 based on Foata normal form. 336/3541 useless extension candidates. Maximal degree in co-relation 14092. Up to 1020 conditions per place. [2024-11-19 01:58:09,427 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 385 selfloop transitions, 28 changer transitions 15/434 dead transitions. [2024-11-19 01:58:09,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 434 transitions, 4558 flow [2024-11-19 01:58:09,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-19 01:58:09,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-19 01:58:09,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 395 transitions. [2024-11-19 01:58:09,428 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4876543209876543 [2024-11-19 01:58:09,429 INFO L175 Difference]: Start difference. First operand has 174 places, 72 transitions, 519 flow. Second operand 27 states and 395 transitions. [2024-11-19 01:58:09,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 434 transitions, 4558 flow [2024-11-19 01:58:09,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 434 transitions, 3461 flow, removed 524 selfloop flow, removed 16 redundant places. [2024-11-19 01:58:09,479 INFO L231 Difference]: Finished difference. Result has 171 places, 84 transitions, 644 flow [2024-11-19 01:58:09,479 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=644, PETRI_PLACES=171, PETRI_TRANSITIONS=84} [2024-11-19 01:58:09,480 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 142 predicate places. [2024-11-19 01:58:09,480 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 84 transitions, 644 flow [2024-11-19 01:58:09,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 9.268292682926829) internal successors, (380), 41 states have internal predecessors, (380), 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) [2024-11-19 01:58:09,480 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:58:09,480 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:58:09,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-19 01:58:09,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-19 01:58:09,681 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-19 01:58:09,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:58:09,682 INFO L85 PathProgramCache]: Analyzing trace with hash 230699310, now seen corresponding path program 3 times [2024-11-19 01:58:09,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:58:09,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226051527] [2024-11-19 01:58:09,682 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:58:09,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:58:09,689 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-19 01:58:09,689 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:58:09,850 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:58:09,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:58:09,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226051527] [2024-11-19 01:58:09,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226051527] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:58:09,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111755440] [2024-11-19 01:58:09,851 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:58:09,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:58:09,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:58:09,852 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:58:09,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-19 01:58:09,897 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-19 01:58:09,897 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:58:09,898 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-19 01:58:09,898 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:58:10,047 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:58:10,048 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:58:10,237 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:58:10,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111755440] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:58:10,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:58:10,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 40 [2024-11-19 01:58:10,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969696896] [2024-11-19 01:58:10,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:58:10,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-19 01:58:10,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:58:10,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-19 01:58:10,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=565, Invalid=1075, Unknown=0, NotChecked=0, Total=1640 [2024-11-19 01:58:10,257 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-11-19 01:58:10,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 84 transitions, 644 flow. Second operand has 41 states, 41 states have (on average 9.268292682926829) internal successors, (380), 41 states have internal predecessors, (380), 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) [2024-11-19 01:58:10,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:58:10,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-11-19 01:58:10,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:58:11,283 INFO L124 PetriNetUnfolderBase]: 2287/4074 cut-off events. [2024-11-19 01:58:11,284 INFO L125 PetriNetUnfolderBase]: For 36013/36013 co-relation queries the response was YES. [2024-11-19 01:58:11,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17035 conditions, 4074 events. 2287/4074 cut-off events. For 36013/36013 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 20954 event pairs, 693 based on Foata normal form. 348/4422 useless extension candidates. Maximal degree in co-relation 16965. Up to 1836 conditions per place. [2024-11-19 01:58:11,312 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 423 selfloop transitions, 28 changer transitions 14/471 dead transitions. [2024-11-19 01:58:11,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 471 transitions, 3778 flow [2024-11-19 01:58:11,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-19 01:58:11,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-19 01:58:11,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 420 transitions. [2024-11-19 01:58:11,313 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2024-11-19 01:58:11,313 INFO L175 Difference]: Start difference. First operand has 171 places, 84 transitions, 644 flow. Second operand 27 states and 420 transitions. [2024-11-19 01:58:11,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 471 transitions, 3778 flow [2024-11-19 01:58:11,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 471 transitions, 3618 flow, removed 61 selfloop flow, removed 14 redundant places. [2024-11-19 01:58:11,378 INFO L231 Difference]: Finished difference. Result has 195 places, 96 transitions, 716 flow [2024-11-19 01:58:11,378 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=716, PETRI_PLACES=195, PETRI_TRANSITIONS=96} [2024-11-19 01:58:11,379 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 166 predicate places. [2024-11-19 01:58:11,379 INFO L471 AbstractCegarLoop]: Abstraction has has 195 places, 96 transitions, 716 flow [2024-11-19 01:58:11,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 9.268292682926829) internal successors, (380), 41 states have internal predecessors, (380), 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) [2024-11-19 01:58:11,379 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:58:11,379 INFO L204 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:58:11,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-19 01:58:11,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-19 01:58:11,580 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-19 01:58:11,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:58:11,580 INFO L85 PathProgramCache]: Analyzing trace with hash 870603000, now seen corresponding path program 4 times [2024-11-19 01:58:11,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:58:11,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143605898] [2024-11-19 01:58:11,580 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:58:11,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:58:11,588 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:58:11,589 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:58:11,958 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:58:11,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:58:11,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143605898] [2024-11-19 01:58:11,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143605898] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:58:11,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786602727] [2024-11-19 01:58:11,959 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:58:11,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:58:11,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:58:11,960 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:58:11,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-19 01:58:12,011 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:58:12,012 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:58:12,013 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-19 01:58:12,014 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:58:12,363 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:58:12,363 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:58:13,003 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:58:13,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786602727] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:58:13,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:58:13,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 76 [2024-11-19 01:58:13,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724800733] [2024-11-19 01:58:13,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:58:13,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2024-11-19 01:58:13,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:58:13,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2024-11-19 01:58:13,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2247, Invalid=3605, Unknown=0, NotChecked=0, Total=5852 [2024-11-19 01:58:13,014 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-11-19 01:58:13,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 96 transitions, 716 flow. Second operand has 77 states, 77 states have (on average 9.142857142857142) internal successors, (704), 77 states have internal predecessors, (704), 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) [2024-11-19 01:58:13,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:58:13,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-11-19 01:58:13,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:58:15,579 INFO L124 PetriNetUnfolderBase]: 3295/5752 cut-off events. [2024-11-19 01:58:15,579 INFO L125 PetriNetUnfolderBase]: For 187620/187620 co-relation queries the response was YES. [2024-11-19 01:58:15,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23864 conditions, 5752 events. 3295/5752 cut-off events. For 187620/187620 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 28332 event pairs, 745 based on Foata normal form. 672/6424 useless extension candidates. Maximal degree in co-relation 23782. Up to 1884 conditions per place. [2024-11-19 01:58:15,648 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 757 selfloop transitions, 52 changer transitions 15/830 dead transitions. [2024-11-19 01:58:15,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 830 transitions, 6813 flow [2024-11-19 01:58:15,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-19 01:58:15,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2024-11-19 01:58:15,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 743 transitions. [2024-11-19 01:58:15,652 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48562091503267973 [2024-11-19 01:58:15,652 INFO L175 Difference]: Start difference. First operand has 195 places, 96 transitions, 716 flow. Second operand 51 states and 743 transitions. [2024-11-19 01:58:15,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 830 transitions, 6813 flow [2024-11-19 01:58:15,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 830 transitions, 6653 flow, removed 61 selfloop flow, removed 14 redundant places. [2024-11-19 01:58:15,786 INFO L231 Difference]: Finished difference. Result has 255 places, 120 transitions, 1004 flow [2024-11-19 01:58:15,786 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=1004, PETRI_PLACES=255, PETRI_TRANSITIONS=120} [2024-11-19 01:58:15,787 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 226 predicate places. [2024-11-19 01:58:15,787 INFO L471 AbstractCegarLoop]: Abstraction has has 255 places, 120 transitions, 1004 flow [2024-11-19 01:58:15,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 9.142857142857142) internal successors, (704), 77 states have internal predecessors, (704), 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) [2024-11-19 01:58:15,787 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:58:15,787 INFO L204 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:58:15,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-19 01:58:15,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-19 01:58:15,988 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-19 01:58:15,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:58:15,988 INFO L85 PathProgramCache]: Analyzing trace with hash 2103640716, now seen corresponding path program 4 times [2024-11-19 01:58:15,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:58:15,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179643575] [2024-11-19 01:58:15,989 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:58:15,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:58:16,001 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:58:16,001 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:58:16,476 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:58:16,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:58:16,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179643575] [2024-11-19 01:58:16,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179643575] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:58:16,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038269011] [2024-11-19 01:58:16,477 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:58:16,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:58:16,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:58:16,479 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:58:16,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-19 01:58:16,561 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:58:16,561 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:58:16,562 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-19 01:58:16,564 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:58:16,932 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:58:16,933 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:58:17,607 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:58:17,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038269011] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:58:17,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:58:17,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 27] total 77 [2024-11-19 01:58:17,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513349143] [2024-11-19 01:58:17,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:58:17,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2024-11-19 01:58:17,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:58:17,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2024-11-19 01:58:17,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2253, Invalid=3753, Unknown=0, NotChecked=0, Total=6006 [2024-11-19 01:58:17,647 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-11-19 01:58:17,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 120 transitions, 1004 flow. Second operand has 78 states, 78 states have (on average 9.179487179487179) internal successors, (716), 78 states have internal predecessors, (716), 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) [2024-11-19 01:58:17,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:58:17,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-11-19 01:58:17,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:58:20,226 INFO L124 PetriNetUnfolderBase]: 4327/7482 cut-off events. [2024-11-19 01:58:20,226 INFO L125 PetriNetUnfolderBase]: For 219479/219479 co-relation queries the response was YES. [2024-11-19 01:58:20,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32071 conditions, 7482 events. 4327/7482 cut-off events. For 219479/219479 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 38131 event pairs, 1317 based on Foata normal form. 696/8178 useless extension candidates. Maximal degree in co-relation 31965. Up to 3516 conditions per place. [2024-11-19 01:58:20,304 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 831 selfloop transitions, 52 changer transitions 14/903 dead transitions. [2024-11-19 01:58:20,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 903 transitions, 7258 flow [2024-11-19 01:58:20,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-19 01:58:20,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2024-11-19 01:58:20,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 792 transitions. [2024-11-19 01:58:20,305 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5176470588235295 [2024-11-19 01:58:20,305 INFO L175 Difference]: Start difference. First operand has 255 places, 120 transitions, 1004 flow. Second operand 51 states and 792 transitions. [2024-11-19 01:58:20,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 903 transitions, 7258 flow [2024-11-19 01:58:20,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 903 transitions, 6954 flow, removed 121 selfloop flow, removed 26 redundant places. [2024-11-19 01:58:20,525 INFO L231 Difference]: Finished difference. Result has 303 places, 144 transitions, 1148 flow [2024-11-19 01:58:20,525 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=706, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=1148, PETRI_PLACES=303, PETRI_TRANSITIONS=144} [2024-11-19 01:58:20,525 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 274 predicate places. [2024-11-19 01:58:20,526 INFO L471 AbstractCegarLoop]: Abstraction has has 303 places, 144 transitions, 1148 flow [2024-11-19 01:58:20,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 9.179487179487179) internal successors, (716), 78 states have internal predecessors, (716), 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) [2024-11-19 01:58:20,526 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:58:20,526 INFO L204 CegarLoopForPetriNet]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:58:20,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-19 01:58:20,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:58:20,727 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-19 01:58:20,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:58:20,727 INFO L85 PathProgramCache]: Analyzing trace with hash -401293448, now seen corresponding path program 5 times [2024-11-19 01:58:20,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:58:20,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391915259] [2024-11-19 01:58:20,727 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:58:20,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:58:20,746 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2024-11-19 01:58:20,746 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:58:21,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:58:21,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:58:21,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391915259] [2024-11-19 01:58:21,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391915259] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:58:21,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810865552] [2024-11-19 01:58:21,877 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:58:21,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:58:21,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:58:21,878 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:58:21,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-19 01:58:21,942 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2024-11-19 01:58:21,942 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:58:21,944 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-19 01:58:21,945 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:58:22,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:58:22,975 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:58:25,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:58:25,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810865552] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:58:25,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:58:25,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 148 [2024-11-19 01:58:25,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063905956] [2024-11-19 01:58:25,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:58:25,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 149 states [2024-11-19 01:58:25,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:58:25,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2024-11-19 01:58:25,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9087, Invalid=12965, Unknown=0, NotChecked=0, Total=22052 [2024-11-19 01:58:25,173 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-11-19 01:58:25,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 144 transitions, 1148 flow. Second operand has 149 states, 149 states have (on average 9.073825503355705) internal successors, (1352), 149 states have internal predecessors, (1352), 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) [2024-11-19 01:58:25,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:58:25,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-11-19 01:58:25,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:58:33,357 INFO L124 PetriNetUnfolderBase]: 6343/10840 cut-off events. [2024-11-19 01:58:33,357 INFO L125 PetriNetUnfolderBase]: For 1486186/1486186 co-relation queries the response was YES. [2024-11-19 01:58:33,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45728 conditions, 10840 events. 6343/10840 cut-off events. For 1486186/1486186 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 52553 event pairs, 1393 based on Foata normal form. 1344/12184 useless extension candidates. Maximal degree in co-relation 45598. Up to 3612 conditions per place. [2024-11-19 01:58:33,482 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 1501 selfloop transitions, 100 changer transitions 15/1622 dead transitions. [2024-11-19 01:58:33,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 1622 transitions, 13341 flow [2024-11-19 01:58:33,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2024-11-19 01:58:33,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2024-11-19 01:58:33,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 1439 transitions. [2024-11-19 01:58:33,486 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4845117845117845 [2024-11-19 01:58:33,486 INFO L175 Difference]: Start difference. First operand has 303 places, 144 transitions, 1148 flow. Second operand 99 states and 1439 transitions. [2024-11-19 01:58:33,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 1622 transitions, 13341 flow [2024-11-19 01:58:33,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 1622 transitions, 13037 flow, removed 121 selfloop flow, removed 26 redundant places. [2024-11-19 01:58:33,940 INFO L231 Difference]: Finished difference. Result has 423 places, 192 transitions, 1724 flow [2024-11-19 01:58:33,940 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=850, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=99, PETRI_FLOW=1724, PETRI_PLACES=423, PETRI_TRANSITIONS=192} [2024-11-19 01:58:33,941 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 394 predicate places. [2024-11-19 01:58:33,941 INFO L471 AbstractCegarLoop]: Abstraction has has 423 places, 192 transitions, 1724 flow [2024-11-19 01:58:33,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 149 states, 149 states have (on average 9.073825503355705) internal successors, (1352), 149 states have internal predecessors, (1352), 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) [2024-11-19 01:58:33,942 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:58:33,942 INFO L204 CegarLoopForPetriNet]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:58:33,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-19 01:58:34,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:58:34,142 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-19 01:58:34,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:58:34,143 INFO L85 PathProgramCache]: Analyzing trace with hash -407217140, now seen corresponding path program 5 times [2024-11-19 01:58:34,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:58:34,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009886963] [2024-11-19 01:58:34,143 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:58:34,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:58:34,166 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2024-11-19 01:58:34,166 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:58:35,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:58:35,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:58:35,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009886963] [2024-11-19 01:58:35,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009886963] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:58:35,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655815946] [2024-11-19 01:58:35,487 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:58:35,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:58:35,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:58:35,488 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:58:35,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-19 01:58:35,551 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2024-11-19 01:58:35,551 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:58:35,553 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-19 01:58:35,555 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:58:36,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:58:36,566 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:58:38,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:58:38,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655815946] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:58:38,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:58:38,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 148 [2024-11-19 01:58:38,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92887514] [2024-11-19 01:58:38,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:58:38,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 149 states [2024-11-19 01:58:38,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:58:38,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2024-11-19 01:58:38,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9087, Invalid=12965, Unknown=0, NotChecked=0, Total=22052 [2024-11-19 01:58:38,752 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-11-19 01:58:38,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 192 transitions, 1724 flow. Second operand has 149 states, 149 states have (on average 9.073825503355705) internal successors, (1352), 149 states have internal predecessors, (1352), 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) [2024-11-19 01:58:38,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:58:38,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-11-19 01:58:38,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:58:48,306 INFO L124 PetriNetUnfolderBase]: 8407/14298 cut-off events. [2024-11-19 01:58:48,307 INFO L125 PetriNetUnfolderBase]: For 1637099/1637099 co-relation queries the response was YES. [2024-11-19 01:58:48,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62143 conditions, 14298 events. 8407/14298 cut-off events. For 1637099/1637099 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 72425 event pairs, 2565 based on Foata normal form. 1392/15690 useless extension candidates. Maximal degree in co-relation 61965. Up to 6876 conditions per place. [2024-11-19 01:58:48,486 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 1647 selfloop transitions, 100 changer transitions 14/1767 dead transitions. [2024-11-19 01:58:48,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 1767 transitions, 14218 flow [2024-11-19 01:58:48,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2024-11-19 01:58:48,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2024-11-19 01:58:48,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 1536 transitions. [2024-11-19 01:58:48,489 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5171717171717172 [2024-11-19 01:58:48,489 INFO L175 Difference]: Start difference. First operand has 423 places, 192 transitions, 1724 flow. Second operand 99 states and 1536 transitions. [2024-11-19 01:58:48,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 1767 transitions, 14218 flow [2024-11-19 01:58:49,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 1767 transitions, 13626 flow, removed 241 selfloop flow, removed 50 redundant places. [2024-11-19 01:58:49,419 INFO L231 Difference]: Finished difference. Result has 519 places, 240 transitions, 2012 flow [2024-11-19 01:58:49,419 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1138, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=99, PETRI_FLOW=2012, PETRI_PLACES=519, PETRI_TRANSITIONS=240} [2024-11-19 01:58:49,419 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 490 predicate places. [2024-11-19 01:58:49,419 INFO L471 AbstractCegarLoop]: Abstraction has has 519 places, 240 transitions, 2012 flow [2024-11-19 01:58:49,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 149 states, 149 states have (on average 9.073825503355705) internal successors, (1352), 149 states have internal predecessors, (1352), 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) [2024-11-19 01:58:49,420 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:58:49,420 INFO L204 CegarLoopForPetriNet]: trace histogram [94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:58:49,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-19 01:58:49,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:58:49,621 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-19 01:58:49,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:58:49,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1888285576, now seen corresponding path program 6 times [2024-11-19 01:58:49,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:58:49,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629189586] [2024-11-19 01:58:49,622 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:58:49,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:58:49,667 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 48 check-sat command(s) [2024-11-19 01:58:49,667 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:58:53,496 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:58:53,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:58:53,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629189586] [2024-11-19 01:58:53,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629189586] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:58:53,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079056311] [2024-11-19 01:58:53,497 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:58:53,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:58:53,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:58:53,498 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:58:53,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-19 01:58:53,584 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 48 check-sat command(s) [2024-11-19 01:58:53,584 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:58:53,586 INFO L255 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 100 conjuncts are in the unsatisfiable core [2024-11-19 01:58:53,589 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:58:56,770 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:58:56,771 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:59:00,059 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:59:00,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079056311] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:59:00,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:59:00,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99, 99] total 203 [2024-11-19 01:59:00,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473068975] [2024-11-19 01:59:00,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:59:00,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 204 states [2024-11-19 01:59:00,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:59:00,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2024-11-19 01:59:00,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15147, Invalid=26265, Unknown=0, NotChecked=0, Total=41412 [2024-11-19 01:59:00,152 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-11-19 01:59:00,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 240 transitions, 2012 flow. Second operand has 204 states, 204 states have (on average 9.058823529411764) internal successors, (1848), 204 states have internal predecessors, (1848), 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) [2024-11-19 01:59:00,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:59:00,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-11-19 01:59:00,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:59:13,170 INFO L124 PetriNetUnfolderBase]: 8701/14786 cut-off events. [2024-11-19 01:59:13,171 INFO L125 PetriNetUnfolderBase]: For 1157486/1157486 co-relation queries the response was YES. [2024-11-19 01:59:13,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61866 conditions, 14786 events. 8701/14786 cut-off events. For 1157486/1157486 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 74736 event pairs, 2689 based on Foata normal form. 196/14982 useless extension candidates. Maximal degree in co-relation 61640. Up to 7068 conditions per place. [2024-11-19 01:59:13,379 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 1654 selfloop transitions, 107 changer transitions 15/1782 dead transitions. [2024-11-19 01:59:13,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 624 places, 1782 transitions, 14738 flow [2024-11-19 01:59:13,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2024-11-19 01:59:13,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2024-11-19 01:59:13,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 1496 transitions. [2024-11-19 01:59:13,381 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47044025157232705 [2024-11-19 01:59:13,381 INFO L175 Difference]: Start difference. First operand has 519 places, 240 transitions, 2012 flow. Second operand 106 states and 1496 transitions. [2024-11-19 01:59:13,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 624 places, 1782 transitions, 14738 flow [2024-11-19 01:59:14,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 574 places, 1782 transitions, 14146 flow, removed 241 selfloop flow, removed 50 redundant places. [2024-11-19 01:59:14,808 INFO L231 Difference]: Finished difference. Result has 581 places, 247 transitions, 1740 flow [2024-11-19 01:59:14,809 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1426, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=106, PETRI_FLOW=1740, PETRI_PLACES=581, PETRI_TRANSITIONS=247} [2024-11-19 01:59:14,809 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 552 predicate places. [2024-11-19 01:59:14,809 INFO L471 AbstractCegarLoop]: Abstraction has has 581 places, 247 transitions, 1740 flow [2024-11-19 01:59:14,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 204 states, 204 states have (on average 9.058823529411764) internal successors, (1848), 204 states have internal predecessors, (1848), 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) [2024-11-19 01:59:14,810 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:59:14,810 INFO L204 CegarLoopForPetriNet]: trace histogram [94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:59:14,823 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-19 01:59:15,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:59:15,011 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-19 01:59:15,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:59:15,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1146384628, now seen corresponding path program 6 times [2024-11-19 01:59:15,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:59:15,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585285690] [2024-11-19 01:59:15,011 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:59:15,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:59:15,049 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 48 check-sat command(s) [2024-11-19 01:59:15,051 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:59:18,537 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:59:18,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:59:18,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585285690] [2024-11-19 01:59:18,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585285690] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:59:18,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415890229] [2024-11-19 01:59:18,537 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:59:18,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:59:18,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:59:18,539 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:59:18,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-19 01:59:18,626 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 48 check-sat command(s) [2024-11-19 01:59:18,626 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:59:18,628 INFO L255 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 100 conjuncts are in the unsatisfiable core [2024-11-19 01:59:18,630 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:59:21,812 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:59:21,813 INFO L311 TraceCheckSpWp]: Computing backward predicates...