./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread/fib_safe-11.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/fib_safe-11.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 67ab3b79be699544cc101a76da66f98a1e0e6116d5865ddc6f998abd49388964 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 01:25:23,999 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 01:25:24,063 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 01:25:24,069 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 01:25:24,071 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 01:25:24,096 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 01:25:24,097 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 01:25:24,097 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 01:25:24,098 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 01:25:24,099 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 01:25:24,100 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 01:25:24,100 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 01:25:24,100 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 01:25:24,102 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 01:25:24,102 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 01:25:24,102 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 01:25:24,103 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 01:25:24,103 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 01:25:24,103 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 01:25:24,103 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 01:25:24,103 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 01:25:24,105 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 01:25:24,106 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 01:25:24,106 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 01:25:24,106 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 01:25:24,106 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 01:25:24,106 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 01:25:24,106 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 01:25:24,107 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 01:25:24,107 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 01:25:24,107 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 01:25:24,107 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 01:25:24,107 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:25:24,107 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 01:25:24,107 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 01:25:24,108 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 01:25:24,108 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 01:25:24,108 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 01:25:24,108 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 01:25:24,108 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 01:25:24,108 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 01:25:24,110 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 01:25:24,111 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67ab3b79be699544cc101a76da66f98a1e0e6116d5865ddc6f998abd49388964 [2024-11-19 01:25:24,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 01:25:24,357 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 01:25:24,360 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 01:25:24,361 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 01:25:24,361 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 01:25:24,362 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/fib_safe-11.i [2024-11-19 01:25:25,757 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 01:25:26,145 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 01:25:26,146 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/fib_safe-11.i [2024-11-19 01:25:26,176 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c673a4ff4/075edfc4cfae44ebb51ef690b9549db2/FLAGbc2052202 [2024-11-19 01:25:26,351 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c673a4ff4/075edfc4cfae44ebb51ef690b9549db2 [2024-11-19 01:25:26,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 01:25:26,355 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 01:25:26,357 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 01:25:26,358 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 01:25:26,363 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 01:25:26,363 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:25:26" (1/1) ... [2024-11-19 01:25:26,364 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b87aa38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:25:26, skipping insertion in model container [2024-11-19 01:25:26,366 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:25:26" (1/1) ... [2024-11-19 01:25:26,408 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 01:25:26,650 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/fib_safe-11.i[30241,30254] [2024-11-19 01:25:26,668 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:25:26,695 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 01:25:26,729 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/fib_safe-11.i[30241,30254] [2024-11-19 01:25:26,734 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:25:26,759 INFO L204 MainTranslator]: Completed translation [2024-11-19 01:25:26,760 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:25:26 WrapperNode [2024-11-19 01:25:26,760 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 01:25:26,760 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 01:25:26,761 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 01:25:26,761 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 01:25:26,766 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:25:26" (1/1) ... [2024-11-19 01:25:26,774 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:25:26" (1/1) ... [2024-11-19 01:25:26,788 INFO L138 Inliner]: procedures = 164, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2024-11-19 01:25:26,788 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 01:25:26,789 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 01:25:26,789 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 01:25:26,789 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 01:25:26,796 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:25:26" (1/1) ... [2024-11-19 01:25:26,796 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:25:26" (1/1) ... [2024-11-19 01:25:26,798 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:25:26" (1/1) ... [2024-11-19 01:25:26,807 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 01:25:26,807 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:25:26" (1/1) ... [2024-11-19 01:25:26,807 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:25:26" (1/1) ... [2024-11-19 01:25:26,810 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:25:26" (1/1) ... [2024-11-19 01:25:26,816 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:25:26" (1/1) ... [2024-11-19 01:25:26,818 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:25:26" (1/1) ... [2024-11-19 01:25:26,818 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:25:26" (1/1) ... [2024-11-19 01:25:26,820 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 01:25:26,822 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 01:25:26,822 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 01:25:26,823 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 01:25:26,823 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:25:26" (1/1) ... [2024-11-19 01:25:26,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:25:26,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:25:26,846 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 01:25:26,849 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 01:25:26,895 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-19 01:25:26,895 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-19 01:25:26,895 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-19 01:25:26,895 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-19 01:25:26,896 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-19 01:25:26,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 01:25:26,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 01:25:26,896 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-19 01:25:26,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 01:25:26,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 01:25:26,897 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 01:25:26,982 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 01:25:26,984 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 01:25:27,076 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 01:25:27,076 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 01:25:27,137 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 01:25:27,138 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-19 01:25:27,138 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:25:27 BoogieIcfgContainer [2024-11-19 01:25:27,138 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 01:25:27,140 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 01:25:27,140 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 01:25:27,142 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 01:25:27,142 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:25:26" (1/3) ... [2024-11-19 01:25:27,143 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a8d2869 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:25:27, skipping insertion in model container [2024-11-19 01:25:27,143 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:25:26" (2/3) ... [2024-11-19 01:25:27,143 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a8d2869 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:25:27, skipping insertion in model container [2024-11-19 01:25:27,143 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:25:27" (3/3) ... [2024-11-19 01:25:27,144 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_safe-11.i [2024-11-19 01:25:27,156 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 01:25:27,156 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 01:25:27,156 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 01:25:27,180 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 01:25:27,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 29 transitions, 66 flow [2024-11-19 01:25:27,221 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2024-11-19 01:25:27,222 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 01:25:27,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 27 events. 4/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 27 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2024-11-19 01:25:27,224 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 29 transitions, 66 flow [2024-11-19 01:25:27,226 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 27 transitions, 60 flow [2024-11-19 01:25:27,233 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 01:25:27,242 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;@50c1f35c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 01:25:27,242 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-19 01:25:27,251 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 01:25:27,255 INFO L124 PetriNetUnfolderBase]: 4/25 cut-off events. [2024-11-19 01:25:27,255 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 01:25:27,256 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:25:27,259 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:25:27,259 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:25:27,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:25:27,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1327058361, now seen corresponding path program 1 times [2024-11-19 01:25:27,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:25:27,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867578407] [2024-11-19 01:25:27,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:25:27,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:25:27,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:25:27,498 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 01:25:27,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:25:27,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867578407] [2024-11-19 01:25:27,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867578407] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:25:27,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:25:27,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 01:25:27,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859925573] [2024-11-19 01:25:27,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:25:27,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 01:25:27,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:25:27,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 01:25:27,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 01:25:27,541 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 29 [2024-11-19 01:25:27,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 01:25:27,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:25:27,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 29 [2024-11-19 01:25:27,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:25:27,618 INFO L124 PetriNetUnfolderBase]: 115/223 cut-off events. [2024-11-19 01:25:27,618 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-19 01:25:27,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 412 conditions, 223 events. 115/223 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 691 event pairs, 20 based on Foata normal form. 9/209 useless extension candidates. Maximal degree in co-relation 398. Up to 118 conditions per place. [2024-11-19 01:25:27,622 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 20 selfloop transitions, 2 changer transitions 1/33 dead transitions. [2024-11-19 01:25:27,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 33 transitions, 118 flow [2024-11-19 01:25:27,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 01:25:27,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 01:25:27,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 61 transitions. [2024-11-19 01:25:27,632 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7011494252873564 [2024-11-19 01:25:27,633 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 60 flow. Second operand 3 states and 61 transitions. [2024-11-19 01:25:27,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 33 transitions, 118 flow [2024-11-19 01:25:27,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 33 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 01:25:27,638 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 66 flow [2024-11-19 01:25:27,639 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2024-11-19 01:25:27,643 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-11-19 01:25:27,644 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 66 flow [2024-11-19 01:25:27,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 01:25:27,644 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:25:27,645 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:25:27,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 01:25:27,645 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:25:27,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:25:27,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1785420741, now seen corresponding path program 1 times [2024-11-19 01:25:27,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:25:27,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99507401] [2024-11-19 01:25:27,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:25:27,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:25:27,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:25:27,740 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 01:25:27,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:25:27,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99507401] [2024-11-19 01:25:27,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99507401] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:25:27,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563216932] [2024-11-19 01:25:27,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:25:27,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:25:27,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:25:27,743 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 01:25:27,745 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 01:25:27,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:25:27,823 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 01:25:27,827 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:25:27,868 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 01:25:27,868 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:25:27,888 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 01:25:27,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563216932] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:25:27,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:25:27,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-19 01:25:27,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382506822] [2024-11-19 01:25:27,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:25:27,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 01:25:27,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:25:27,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 01:25:27,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-19 01:25:27,894 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 29 [2024-11-19 01:25:27,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 66 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:25:27,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:25:27,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 29 [2024-11-19 01:25:27,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:25:28,026 INFO L124 PetriNetUnfolderBase]: 151/277 cut-off events. [2024-11-19 01:25:28,027 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-19 01:25:28,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 584 conditions, 277 events. 151/277 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 799 event pairs, 20 based on Foata normal form. 0/254 useless extension candidates. Maximal degree in co-relation 569. Up to 91 conditions per place. [2024-11-19 01:25:28,031 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 38 selfloop transitions, 5 changer transitions 0/53 dead transitions. [2024-11-19 01:25:28,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 53 transitions, 212 flow [2024-11-19 01:25:28,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 01:25:28,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 01:25:28,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 118 transitions. [2024-11-19 01:25:28,034 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6781609195402298 [2024-11-19 01:25:28,035 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 66 flow. Second operand 6 states and 118 transitions. [2024-11-19 01:25:28,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 53 transitions, 212 flow [2024-11-19 01:25:28,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 53 transitions, 210 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 01:25:28,037 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 100 flow [2024-11-19 01:25:28,038 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=100, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2024-11-19 01:25:28,038 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 7 predicate places. [2024-11-19 01:25:28,038 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 100 flow [2024-11-19 01:25:28,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:25:28,039 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:25:28,039 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:25:28,052 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 01:25:28,240 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 01:25:28,240 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:25:28,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:25:28,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1099178439, now seen corresponding path program 2 times [2024-11-19 01:25:28,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:25:28,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156094277] [2024-11-19 01:25:28,242 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:25:28,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:25:28,263 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:25:28,263 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:25:28,344 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 01:25:28,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:25:28,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156094277] [2024-11-19 01:25:28,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156094277] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:25:28,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975633108] [2024-11-19 01:25:28,345 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:25:28,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:25:28,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:25:28,346 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 01:25:28,348 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 01:25:28,426 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:25:28,426 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:25:28,427 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 01:25:28,428 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:25:28,455 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 01:25:28,459 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:25:28,546 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 01:25:28,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975633108] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:25:28,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:25:28,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-19 01:25:28,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408033267] [2024-11-19 01:25:28,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:25:28,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 01:25:28,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:25:28,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 01:25:28,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-19 01:25:28,553 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 29 [2024-11-19 01:25:28,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 100 flow. Second operand has 13 states, 13 states have (on average 13.538461538461538) internal successors, (176), 13 states have internal predecessors, (176), 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 01:25:28,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:25:28,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 29 [2024-11-19 01:25:28,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:25:28,782 INFO L124 PetriNetUnfolderBase]: 259/439 cut-off events. [2024-11-19 01:25:28,783 INFO L125 PetriNetUnfolderBase]: For 207/207 co-relation queries the response was YES. [2024-11-19 01:25:28,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1110 conditions, 439 events. 259/439 cut-off events. For 207/207 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1196 event pairs, 20 based on Foata normal form. 54/479 useless extension candidates. Maximal degree in co-relation 1091. Up to 109 conditions per place. [2024-11-19 01:25:28,786 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 74 selfloop transitions, 11 changer transitions 0/95 dead transitions. [2024-11-19 01:25:28,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 95 transitions, 426 flow [2024-11-19 01:25:28,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 01:25:28,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-19 01:25:28,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 235 transitions. [2024-11-19 01:25:28,788 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6752873563218391 [2024-11-19 01:25:28,788 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 100 flow. Second operand 12 states and 235 transitions. [2024-11-19 01:25:28,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 95 transitions, 426 flow [2024-11-19 01:25:28,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 95 transitions, 412 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-19 01:25:28,792 INFO L231 Difference]: Finished difference. Result has 53 places, 35 transitions, 170 flow [2024-11-19 01:25:28,792 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=170, PETRI_PLACES=53, PETRI_TRANSITIONS=35} [2024-11-19 01:25:28,793 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 23 predicate places. [2024-11-19 01:25:28,793 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 35 transitions, 170 flow [2024-11-19 01:25:28,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.538461538461538) internal successors, (176), 13 states have internal predecessors, (176), 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 01:25:28,793 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:25:28,793 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:25:28,807 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 01:25:28,997 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,SelfDestructingSolverStorable2 [2024-11-19 01:25:28,998 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:25:28,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:25:28,999 INFO L85 PathProgramCache]: Analyzing trace with hash -299417337, now seen corresponding path program 3 times [2024-11-19 01:25:28,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:25:28,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748795245] [2024-11-19 01:25:28,999 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:25:28,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:25:29,043 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-19 01:25:29,047 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:25:29,239 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 01:25:29,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:25:29,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748795245] [2024-11-19 01:25:29,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748795245] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:25:29,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701657699] [2024-11-19 01:25:29,241 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:25:29,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:25:29,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:25:29,246 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 01:25:29,256 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 01:25:29,314 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-19 01:25:29,314 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:25:29,315 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-19 01:25:29,317 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:25:29,341 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 01:25:29,342 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:25:29,519 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 01:25:29,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701657699] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:25:29,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:25:29,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-19 01:25:29,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251889805] [2024-11-19 01:25:29,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:25:29,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-19 01:25:29,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:25:29,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-19 01:25:29,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-19 01:25:29,522 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 29 [2024-11-19 01:25:29,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 35 transitions, 170 flow. Second operand has 25 states, 25 states have (on average 13.28) internal successors, (332), 25 states have internal predecessors, (332), 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 01:25:29,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:25:29,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 29 [2024-11-19 01:25:29,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:25:29,789 INFO L124 PetriNetUnfolderBase]: 475/763 cut-off events. [2024-11-19 01:25:29,789 INFO L125 PetriNetUnfolderBase]: For 4203/4203 co-relation queries the response was YES. [2024-11-19 01:25:29,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2242 conditions, 763 events. 475/763 cut-off events. For 4203/4203 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1994 event pairs, 20 based on Foata normal form. 108/857 useless extension candidates. Maximal degree in co-relation 2216. Up to 190 conditions per place. [2024-11-19 01:25:29,795 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 146 selfloop transitions, 23 changer transitions 0/179 dead transitions. [2024-11-19 01:25:29,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 179 transitions, 868 flow [2024-11-19 01:25:29,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-19 01:25:29,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-19 01:25:29,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 469 transitions. [2024-11-19 01:25:29,799 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6738505747126436 [2024-11-19 01:25:29,799 INFO L175 Difference]: Start difference. First operand has 53 places, 35 transitions, 170 flow. Second operand 24 states and 469 transitions. [2024-11-19 01:25:29,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 179 transitions, 868 flow [2024-11-19 01:25:29,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 179 transitions, 796 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-11-19 01:25:29,809 INFO L231 Difference]: Finished difference. Result has 83 places, 47 transitions, 290 flow [2024-11-19 01:25:29,810 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=290, PETRI_PLACES=83, PETRI_TRANSITIONS=47} [2024-11-19 01:25:29,811 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 53 predicate places. [2024-11-19 01:25:29,811 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 47 transitions, 290 flow [2024-11-19 01:25:29,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 13.28) internal successors, (332), 25 states have internal predecessors, (332), 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 01:25:29,812 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:25:29,812 INFO L204 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:25:29,826 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 01:25:30,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:25:30,013 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:25:30,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:25:30,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1108070521, now seen corresponding path program 4 times [2024-11-19 01:25:30,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:25:30,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674730227] [2024-11-19 01:25:30,017 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:25:30,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:25:30,045 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:25:30,048 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:25:30,478 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 01:25:30,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:25:30,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674730227] [2024-11-19 01:25:30,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674730227] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:25:30,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37673011] [2024-11-19 01:25:30,480 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:25:30,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:25:30,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:25:30,485 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 01:25:30,489 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 01:25:30,561 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:25:30,562 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:25:30,563 INFO L255 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-19 01:25:30,567 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:25:30,619 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 01:25:30,619 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:25:30,987 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 01:25:30,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37673011] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:25:30,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:25:30,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 26 [2024-11-19 01:25:30,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408620729] [2024-11-19 01:25:30,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:25:30,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-19 01:25:30,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:25:30,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-19 01:25:30,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2024-11-19 01:25:30,995 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 29 [2024-11-19 01:25:30,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 47 transitions, 290 flow. Second operand has 26 states, 26 states have (on average 13.26923076923077) internal successors, (345), 26 states have internal predecessors, (345), 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 01:25:30,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:25:30,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 29 [2024-11-19 01:25:30,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:25:31,656 INFO L124 PetriNetUnfolderBase]: 511/817 cut-off events. [2024-11-19 01:25:31,656 INFO L125 PetriNetUnfolderBase]: For 5553/5553 co-relation queries the response was YES. [2024-11-19 01:25:31,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2524 conditions, 817 events. 511/817 cut-off events. For 5553/5553 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2126 event pairs, 20 based on Foata normal form. 18/821 useless extension candidates. Maximal degree in co-relation 2486. Up to 172 conditions per place. [2024-11-19 01:25:31,662 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 158 selfloop transitions, 25 changer transitions 0/193 dead transitions. [2024-11-19 01:25:31,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 193 transitions, 960 flow [2024-11-19 01:25:31,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-19 01:25:31,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-19 01:25:31,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 497 transitions. [2024-11-19 01:25:31,668 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6591511936339522 [2024-11-19 01:25:31,669 INFO L175 Difference]: Start difference. First operand has 83 places, 47 transitions, 290 flow. Second operand 26 states and 497 transitions. [2024-11-19 01:25:31,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 193 transitions, 960 flow [2024-11-19 01:25:31,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 193 transitions, 860 flow, removed 39 selfloop flow, removed 11 redundant places. [2024-11-19 01:25:31,678 INFO L231 Difference]: Finished difference. Result has 99 places, 49 transitions, 266 flow [2024-11-19 01:25:31,678 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=266, PETRI_PLACES=99, PETRI_TRANSITIONS=49} [2024-11-19 01:25:31,679 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 69 predicate places. [2024-11-19 01:25:31,679 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 49 transitions, 266 flow [2024-11-19 01:25:31,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 13.26923076923077) internal successors, (345), 26 states have internal predecessors, (345), 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 01:25:31,680 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:25:31,680 INFO L204 CegarLoopForPetriNet]: trace histogram [24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:25:31,710 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 01:25:31,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:25:31,884 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:25:31,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:25:31,884 INFO L85 PathProgramCache]: Analyzing trace with hash -518058169, now seen corresponding path program 5 times [2024-11-19 01:25:31,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:25:31,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930354962] [2024-11-19 01:25:31,885 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:25:31,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:25:31,952 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-19 01:25:31,953 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:25:33,627 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:25:33,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:25:33,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930354962] [2024-11-19 01:25:33,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930354962] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:25:33,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262711075] [2024-11-19 01:25:33,628 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:25:33,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:25:33,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:25:33,629 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 01:25:33,632 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 01:25:33,702 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-19 01:25:33,703 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:25:33,705 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 83 conjuncts are in the unsatisfiable core [2024-11-19 01:25:33,707 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:25:35,302 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 253 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:25:35,302 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:25:37,002 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:25:37,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262711075] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:25:37,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:25:37,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 90 [2024-11-19 01:25:37,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665105265] [2024-11-19 01:25:37,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:25:37,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2024-11-19 01:25:37,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:25:37,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2024-11-19 01:25:37,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1170, Invalid=7020, Unknown=0, NotChecked=0, Total=8190 [2024-11-19 01:25:37,326 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-11-19 01:25:37,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 49 transitions, 266 flow. Second operand has 91 states, 91 states have (on average 6.186813186813187) internal successors, (563), 91 states have internal predecessors, (563), 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 01:25:37,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:25:37,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-11-19 01:25:37,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand