./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp2x9.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp2x9.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash af523f24b0126267447f5590b01302c6de6f439c37a01df1dbf66192a849a6d6 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 09:34:16,596 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 09:34:16,668 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-20 09:34:16,673 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 09:34:16,674 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 09:34:16,724 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 09:34:16,724 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 09:34:16,725 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 09:34:16,725 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 09:34:16,726 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 09:34:16,727 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 09:34:16,727 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 09:34:16,728 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 09:34:16,728 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 09:34:16,730 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 09:34:16,730 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 09:34:16,731 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 09:34:16,731 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 09:34:16,731 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 09:34:16,731 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 09:34:16,731 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 09:34:16,735 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 09:34:16,735 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 09:34:16,736 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 09:34:16,736 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 09:34:16,736 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 09:34:16,736 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 09:34:16,736 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 09:34:16,736 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 09:34:16,737 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 09:34:16,737 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 09:34:16,737 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 09:34:16,737 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 09:34:16,737 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 09:34:16,738 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 09:34:16,738 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 09:34:16,738 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 09:34:16,739 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 09:34:16,739 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 09:34:16,740 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 09:34:16,740 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 09:34:16,740 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 09:34:16,740 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> af523f24b0126267447f5590b01302c6de6f439c37a01df1dbf66192a849a6d6 [2024-11-20 09:34:16,950 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 09:34:16,971 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 09:34:16,975 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 09:34:16,986 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 09:34:16,987 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 09:34:16,988 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp2x9.wvr.c [2024-11-20 09:34:18,426 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 09:34:18,613 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 09:34:18,613 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp2x9.wvr.c [2024-11-20 09:34:18,621 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b41812ca6/6ae23145cdb24293be935f39780c37c4/FLAGe5e0be35a [2024-11-20 09:34:18,633 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b41812ca6/6ae23145cdb24293be935f39780c37c4 [2024-11-20 09:34:18,635 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 09:34:18,637 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 09:34:18,637 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 09:34:18,637 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 09:34:18,643 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 09:34:18,644 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:34:18" (1/1) ... [2024-11-20 09:34:18,645 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19b6eb58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:18, skipping insertion in model container [2024-11-20 09:34:18,645 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:34:18" (1/1) ... [2024-11-20 09:34:18,662 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 09:34:18,922 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp2x9.wvr.c[2721,2734] [2024-11-20 09:34:18,930 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 09:34:18,953 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 09:34:18,994 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp2x9.wvr.c[2721,2734] [2024-11-20 09:34:19,001 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 09:34:19,034 INFO L204 MainTranslator]: Completed translation [2024-11-20 09:34:19,035 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:19 WrapperNode [2024-11-20 09:34:19,035 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 09:34:19,036 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 09:34:19,036 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 09:34:19,036 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 09:34:19,041 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:19" (1/1) ... [2024-11-20 09:34:19,046 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:19" (1/1) ... [2024-11-20 09:34:19,059 INFO L138 Inliner]: procedures = 19, calls = 12, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2024-11-20 09:34:19,059 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 09:34:19,059 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 09:34:19,059 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 09:34:19,060 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 09:34:19,070 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:19" (1/1) ... [2024-11-20 09:34:19,070 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:19" (1/1) ... [2024-11-20 09:34:19,072 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:19" (1/1) ... [2024-11-20 09:34:19,085 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]. [2024-11-20 09:34:19,085 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:19" (1/1) ... [2024-11-20 09:34:19,085 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:19" (1/1) ... [2024-11-20 09:34:19,094 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:19" (1/1) ... [2024-11-20 09:34:19,097 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:19" (1/1) ... [2024-11-20 09:34:19,097 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:19" (1/1) ... [2024-11-20 09:34:19,098 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:19" (1/1) ... [2024-11-20 09:34:19,099 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 09:34:19,100 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 09:34:19,100 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 09:34:19,100 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 09:34:19,101 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:19" (1/1) ... [2024-11-20 09:34:19,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 09:34:19,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:34:19,132 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) [2024-11-20 09:34:19,135 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 [2024-11-20 09:34:19,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 09:34:19,170 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-20 09:34:19,170 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-20 09:34:19,170 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-20 09:34:19,170 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-20 09:34:19,170 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-20 09:34:19,170 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-20 09:34:19,170 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-20 09:34:19,170 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-20 09:34:19,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 09:34:19,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 09:34:19,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 09:34:19,172 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 09:34:19,243 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 09:34:19,244 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 09:34:19,415 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 09:34:19,416 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 09:34:19,530 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 09:34:19,531 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-20 09:34:19,531 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:34:19 BoogieIcfgContainer [2024-11-20 09:34:19,531 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 09:34:19,533 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 09:34:19,533 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 09:34:19,536 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 09:34:19,536 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:34:18" (1/3) ... [2024-11-20 09:34:19,536 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@99df44c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:34:19, skipping insertion in model container [2024-11-20 09:34:19,536 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:19" (2/3) ... [2024-11-20 09:34:19,537 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@99df44c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:34:19, skipping insertion in model container [2024-11-20 09:34:19,537 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:34:19" (3/3) ... [2024-11-20 09:34:19,538 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp2x9.wvr.c [2024-11-20 09:34:19,550 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 09:34:19,550 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-20 09:34:19,550 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 09:34:19,609 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-20 09:34:19,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 32 transitions, 92 flow [2024-11-20 09:34:19,661 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2024-11-20 09:34:19,661 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-20 09:34:19,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 28 events. 4/28 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 23 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 25. Up to 2 conditions per place. [2024-11-20 09:34:19,664 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 32 transitions, 92 flow [2024-11-20 09:34:19,666 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 27 transitions, 78 flow [2024-11-20 09:34:19,672 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 09:34:19,677 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;@118b92d1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 09:34:19,677 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-20 09:34:19,686 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 09:34:19,686 INFO L124 PetriNetUnfolderBase]: 4/26 cut-off events. [2024-11-20 09:34:19,686 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-20 09:34:19,686 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:34:19,686 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:34:19,687 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 09:34:19,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:34:19,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1825658945, now seen corresponding path program 1 times [2024-11-20 09:34:19,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:34:19,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995887625] [2024-11-20 09:34:19,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:34:19,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:34:19,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:34:20,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:34:20,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:34:20,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995887625] [2024-11-20 09:34:20,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995887625] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:34:20,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:34:20,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 09:34:20,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642587332] [2024-11-20 09:34:20,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:34:20,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 09:34:20,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:34:20,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 09:34:20,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 09:34:20,104 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-20 09:34:20,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2024-11-20 09:34:20,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:34:20,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-20 09:34:20,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:34:20,389 INFO L124 PetriNetUnfolderBase]: 1367/1732 cut-off events. [2024-11-20 09:34:20,389 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2024-11-20 09:34:20,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3611 conditions, 1732 events. 1367/1732 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5555 event pairs, 123 based on Foata normal form. 1/997 useless extension candidates. Maximal degree in co-relation 3091. Up to 1541 conditions per place. [2024-11-20 09:34:20,410 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 35 selfloop transitions, 5 changer transitions 1/46 dead transitions. [2024-11-20 09:34:20,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 46 transitions, 219 flow [2024-11-20 09:34:20,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 09:34:20,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 09:34:20,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2024-11-20 09:34:20,421 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.71875 [2024-11-20 09:34:20,423 INFO L175 Difference]: Start difference. First operand has 36 places, 27 transitions, 78 flow. Second operand 3 states and 69 transitions. [2024-11-20 09:34:20,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 46 transitions, 219 flow [2024-11-20 09:34:20,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 46 transitions, 189 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-20 09:34:20,434 INFO L231 Difference]: Finished difference. Result has 31 places, 31 transitions, 95 flow [2024-11-20 09:34:20,436 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=31, PETRI_TRANSITIONS=31} [2024-11-20 09:34:20,440 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -5 predicate places. [2024-11-20 09:34:20,440 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 31 transitions, 95 flow [2024-11-20 09:34:20,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2024-11-20 09:34:20,441 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:34:20,441 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:34:20,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 09:34:20,442 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 09:34:20,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:34:20,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1779863488, now seen corresponding path program 1 times [2024-11-20 09:34:20,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:34:20,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154635758] [2024-11-20 09:34:20,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:34:20,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:34:20,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:34:20,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:34:20,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:34:20,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154635758] [2024-11-20 09:34:20,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154635758] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:34:20,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:34:20,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 09:34:20,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025577987] [2024-11-20 09:34:20,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:34:20,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 09:34:20,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:34:20,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 09:34:20,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 09:34:20,577 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-20 09:34:20,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 31 transitions, 95 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2024-11-20 09:34:20,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:34:20,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-20 09:34:20,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:34:20,844 INFO L124 PetriNetUnfolderBase]: 1593/2038 cut-off events. [2024-11-20 09:34:20,846 INFO L125 PetriNetUnfolderBase]: For 483/483 co-relation queries the response was YES. [2024-11-20 09:34:20,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5072 conditions, 2038 events. 1593/2038 cut-off events. For 483/483 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 7003 event pairs, 113 based on Foata normal form. 34/2066 useless extension candidates. Maximal degree in co-relation 1272. Up to 842 conditions per place. [2024-11-20 09:34:20,862 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 66 selfloop transitions, 10 changer transitions 0/81 dead transitions. [2024-11-20 09:34:20,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 81 transitions, 391 flow [2024-11-20 09:34:20,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:34:20,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:34:20,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2024-11-20 09:34:20,865 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.71875 [2024-11-20 09:34:20,865 INFO L175 Difference]: Start difference. First operand has 31 places, 31 transitions, 95 flow. Second operand 5 states and 115 transitions. [2024-11-20 09:34:20,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 81 transitions, 391 flow [2024-11-20 09:34:20,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 81 transitions, 383 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 09:34:20,868 INFO L231 Difference]: Finished difference. Result has 36 places, 38 transitions, 155 flow [2024-11-20 09:34:20,869 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=155, PETRI_PLACES=36, PETRI_TRANSITIONS=38} [2024-11-20 09:34:20,870 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2024-11-20 09:34:20,870 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 38 transitions, 155 flow [2024-11-20 09:34:20,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2024-11-20 09:34:20,871 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:34:20,871 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:34:20,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 09:34:20,871 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 09:34:20,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:34:20,872 INFO L85 PathProgramCache]: Analyzing trace with hash -823057285, now seen corresponding path program 1 times [2024-11-20 09:34:20,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:34:20,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869224687] [2024-11-20 09:34:20,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:34:20,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:34:20,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:34:20,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:34:20,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:34:20,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869224687] [2024-11-20 09:34:20,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869224687] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:34:20,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:34:20,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 09:34:20,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480168401] [2024-11-20 09:34:20,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:34:20,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 09:34:20,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:34:20,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 09:34:20,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 09:34:20,985 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-20 09:34:20,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 38 transitions, 155 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2024-11-20 09:34:20,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:34:20,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-20 09:34:20,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:34:21,290 INFO L124 PetriNetUnfolderBase]: 1547/1992 cut-off events. [2024-11-20 09:34:21,290 INFO L125 PetriNetUnfolderBase]: For 1776/1776 co-relation queries the response was YES. [2024-11-20 09:34:21,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6028 conditions, 1992 events. 1547/1992 cut-off events. For 1776/1776 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6975 event pairs, 95 based on Foata normal form. 46/2032 useless extension candidates. Maximal degree in co-relation 2829. Up to 812 conditions per place. [2024-11-20 09:34:21,300 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 65 selfloop transitions, 8 changer transitions 0/78 dead transitions. [2024-11-20 09:34:21,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 78 transitions, 412 flow [2024-11-20 09:34:21,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:34:21,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:34:21,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 113 transitions. [2024-11-20 09:34:21,302 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.70625 [2024-11-20 09:34:21,302 INFO L175 Difference]: Start difference. First operand has 36 places, 38 transitions, 155 flow. Second operand 5 states and 113 transitions. [2024-11-20 09:34:21,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 78 transitions, 412 flow [2024-11-20 09:34:21,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 78 transitions, 412 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-20 09:34:21,305 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 169 flow [2024-11-20 09:34:21,305 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=169, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2024-11-20 09:34:21,305 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 5 predicate places. [2024-11-20 09:34:21,305 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 169 flow [2024-11-20 09:34:21,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2024-11-20 09:34:21,306 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:34:21,306 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:34:21,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 09:34:21,306 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 09:34:21,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:34:21,307 INFO L85 PathProgramCache]: Analyzing trace with hash 47067324, now seen corresponding path program 2 times [2024-11-20 09:34:21,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:34:21,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220926719] [2024-11-20 09:34:21,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:34:21,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:34:21,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:34:21,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:34:21,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:34:21,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220926719] [2024-11-20 09:34:21,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220926719] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:34:21,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989276213] [2024-11-20 09:34:21,390 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 09:34:21,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:34:21,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:34:21,393 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) [2024-11-20 09:34:21,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 09:34:21,463 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 09:34:21,464 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:34:21,466 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-20 09:34:21,470 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:34:21,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:34:21,665 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:34:21,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:34:21,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989276213] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:34:21,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:34:21,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-11-20 09:34:21,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725507298] [2024-11-20 09:34:21,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:34:21,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 09:34:21,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:34:21,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 09:34:21,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-20 09:34:21,741 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-20 09:34:21,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 169 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 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) [2024-11-20 09:34:21,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:34:21,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-20 09:34:21,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:34:21,960 INFO L124 PetriNetUnfolderBase]: 1472/1927 cut-off events. [2024-11-20 09:34:21,960 INFO L125 PetriNetUnfolderBase]: For 2610/2610 co-relation queries the response was YES. [2024-11-20 09:34:21,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6174 conditions, 1927 events. 1472/1927 cut-off events. For 2610/2610 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 7133 event pairs, 354 based on Foata normal form. 61/1970 useless extension candidates. Maximal degree in co-relation 2582. Up to 1023 conditions per place. [2024-11-20 09:34:21,971 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 65 selfloop transitions, 8 changer transitions 0/78 dead transitions. [2024-11-20 09:34:21,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 78 transitions, 444 flow [2024-11-20 09:34:21,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:34:21,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:34:21,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2024-11-20 09:34:21,973 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7125 [2024-11-20 09:34:21,973 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 169 flow. Second operand 5 states and 114 transitions. [2024-11-20 09:34:21,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 78 transitions, 444 flow [2024-11-20 09:34:21,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 78 transitions, 437 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 09:34:21,976 INFO L231 Difference]: Finished difference. Result has 46 places, 40 transitions, 212 flow [2024-11-20 09:34:21,976 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=212, PETRI_PLACES=46, PETRI_TRANSITIONS=40} [2024-11-20 09:34:21,976 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 10 predicate places. [2024-11-20 09:34:21,977 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 40 transitions, 212 flow [2024-11-20 09:34:21,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 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) [2024-11-20 09:34:21,977 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:34:21,977 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:34:21,987 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-20 09:34:22,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:34:22,184 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 09:34:22,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:34:22,185 INFO L85 PathProgramCache]: Analyzing trace with hash 2003843596, now seen corresponding path program 1 times [2024-11-20 09:34:22,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:34:22,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954263016] [2024-11-20 09:34:22,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:34:22,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:34:22,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:34:22,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:34:22,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:34:22,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954263016] [2024-11-20 09:34:22,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954263016] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:34:22,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:34:22,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 09:34:22,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993036620] [2024-11-20 09:34:22,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:34:22,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 09:34:22,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:34:22,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 09:34:22,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 09:34:22,271 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-20 09:34:22,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 40 transitions, 212 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2024-11-20 09:34:22,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:34:22,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-20 09:34:22,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:34:22,535 INFO L124 PetriNetUnfolderBase]: 1783/2410 cut-off events. [2024-11-20 09:34:22,535 INFO L125 PetriNetUnfolderBase]: For 6337/6337 co-relation queries the response was YES. [2024-11-20 09:34:22,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8750 conditions, 2410 events. 1783/2410 cut-off events. For 6337/6337 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 9863 event pairs, 285 based on Foata normal form. 64/2452 useless extension candidates. Maximal degree in co-relation 5382. Up to 1013 conditions per place. [2024-11-20 09:34:22,552 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 91 selfloop transitions, 8 changer transitions 0/104 dead transitions. [2024-11-20 09:34:22,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 104 transitions, 803 flow [2024-11-20 09:34:22,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:34:22,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:34:22,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2024-11-20 09:34:22,554 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.675 [2024-11-20 09:34:22,554 INFO L175 Difference]: Start difference. First operand has 46 places, 40 transitions, 212 flow. Second operand 5 states and 108 transitions. [2024-11-20 09:34:22,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 104 transitions, 803 flow [2024-11-20 09:34:22,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 104 transitions, 778 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-11-20 09:34:22,563 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 258 flow [2024-11-20 09:34:22,563 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=258, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2024-11-20 09:34:22,564 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 16 predicate places. [2024-11-20 09:34:22,564 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 258 flow [2024-11-20 09:34:22,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2024-11-20 09:34:22,564 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:34:22,564 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:34:22,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 09:34:22,565 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 09:34:22,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:34:22,565 INFO L85 PathProgramCache]: Analyzing trace with hash -2005361948, now seen corresponding path program 2 times [2024-11-20 09:34:22,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:34:22,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818696031] [2024-11-20 09:34:22,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:34:22,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:34:22,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:34:22,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:34:22,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:34:22,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818696031] [2024-11-20 09:34:22,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818696031] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:34:22,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:34:22,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 09:34:22,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868660640] [2024-11-20 09:34:22,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:34:22,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 09:34:22,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:34:22,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 09:34:22,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 09:34:22,619 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-20 09:34:22,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 258 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2024-11-20 09:34:22,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:34:22,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-20 09:34:22,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:34:22,862 INFO L124 PetriNetUnfolderBase]: 1610/2155 cut-off events. [2024-11-20 09:34:22,863 INFO L125 PetriNetUnfolderBase]: For 6116/6116 co-relation queries the response was YES. [2024-11-20 09:34:22,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9020 conditions, 2155 events. 1610/2155 cut-off events. For 6116/6116 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 8188 event pairs, 91 based on Foata normal form. 31/2164 useless extension candidates. Maximal degree in co-relation 5647. Up to 897 conditions per place. [2024-11-20 09:34:22,879 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 92 selfloop transitions, 11 changer transitions 0/108 dead transitions. [2024-11-20 09:34:22,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 108 transitions, 856 flow [2024-11-20 09:34:22,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:34:22,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:34:22,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 107 transitions. [2024-11-20 09:34:22,881 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.66875 [2024-11-20 09:34:22,881 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 258 flow. Second operand 5 states and 107 transitions. [2024-11-20 09:34:22,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 108 transitions, 856 flow [2024-11-20 09:34:22,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 108 transitions, 856 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-20 09:34:22,888 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 319 flow [2024-11-20 09:34:22,888 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=319, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2024-11-20 09:34:22,889 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 21 predicate places. [2024-11-20 09:34:22,889 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 319 flow [2024-11-20 09:34:22,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2024-11-20 09:34:22,890 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:34:22,890 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:34:22,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-20 09:34:22,890 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 09:34:22,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:34:22,891 INFO L85 PathProgramCache]: Analyzing trace with hash 595424223, now seen corresponding path program 1 times [2024-11-20 09:34:22,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:34:22,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129477173] [2024-11-20 09:34:22,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:34:22,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:34:22,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:34:22,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:34:22,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:34:22,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129477173] [2024-11-20 09:34:22,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129477173] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:34:22,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:34:22,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 09:34:22,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241638451] [2024-11-20 09:34:22,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:34:22,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 09:34:22,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:34:22,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 09:34:22,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 09:34:22,953 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-20 09:34:22,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 319 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2024-11-20 09:34:22,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:34:22,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-20 09:34:22,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:34:23,175 INFO L124 PetriNetUnfolderBase]: 1577/2122 cut-off events. [2024-11-20 09:34:23,176 INFO L125 PetriNetUnfolderBase]: For 6970/6970 co-relation queries the response was YES. [2024-11-20 09:34:23,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9540 conditions, 2122 events. 1577/2122 cut-off events. For 6970/6970 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 8181 event pairs, 71 based on Foata normal form. 33/2133 useless extension candidates. Maximal degree in co-relation 5985. Up to 983 conditions per place. [2024-11-20 09:34:23,195 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 88 selfloop transitions, 8 changer transitions 4/105 dead transitions. [2024-11-20 09:34:23,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 105 transitions, 865 flow [2024-11-20 09:34:23,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:34:23,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:34:23,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 105 transitions. [2024-11-20 09:34:23,197 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65625 [2024-11-20 09:34:23,197 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 319 flow. Second operand 5 states and 105 transitions. [2024-11-20 09:34:23,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 105 transitions, 865 flow [2024-11-20 09:34:23,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 105 transitions, 854 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-20 09:34:23,203 INFO L231 Difference]: Finished difference. Result has 61 places, 49 transitions, 322 flow [2024-11-20 09:34:23,204 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=322, PETRI_PLACES=61, PETRI_TRANSITIONS=49} [2024-11-20 09:34:23,204 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 25 predicate places. [2024-11-20 09:34:23,205 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 49 transitions, 322 flow [2024-11-20 09:34:23,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2024-11-20 09:34:23,206 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:34:23,206 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:34:23,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-20 09:34:23,206 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 09:34:23,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:34:23,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1102090329, now seen corresponding path program 2 times [2024-11-20 09:34:23,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:34:23,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091686002] [2024-11-20 09:34:23,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:34:23,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:34:23,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:34:23,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:34:23,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:34:23,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091686002] [2024-11-20 09:34:23,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091686002] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:34:23,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:34:23,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 09:34:23,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411486909] [2024-11-20 09:34:23,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:34:23,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 09:34:23,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:34:23,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 09:34:23,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 09:34:23,268 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-20 09:34:23,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 49 transitions, 322 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2024-11-20 09:34:23,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:34:23,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-20 09:34:23,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:34:23,473 INFO L124 PetriNetUnfolderBase]: 1515/2072 cut-off events. [2024-11-20 09:34:23,474 INFO L125 PetriNetUnfolderBase]: For 7283/7283 co-relation queries the response was YES. [2024-11-20 09:34:23,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9584 conditions, 2072 events. 1515/2072 cut-off events. For 7283/7283 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 8421 event pairs, 258 based on Foata normal form. 62/2112 useless extension candidates. Maximal degree in co-relation 6013. Up to 1124 conditions per place. [2024-11-20 09:34:23,488 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 91 selfloop transitions, 8 changer transitions 0/104 dead transitions. [2024-11-20 09:34:23,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 104 transitions, 885 flow [2024-11-20 09:34:23,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:34:23,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:34:23,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 103 transitions. [2024-11-20 09:34:23,490 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.64375 [2024-11-20 09:34:23,490 INFO L175 Difference]: Start difference. First operand has 61 places, 49 transitions, 322 flow. Second operand 5 states and 103 transitions. [2024-11-20 09:34:23,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 104 transitions, 885 flow [2024-11-20 09:34:23,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 104 transitions, 872 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-20 09:34:23,500 INFO L231 Difference]: Finished difference. Result has 66 places, 52 transitions, 362 flow [2024-11-20 09:34:23,500 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=362, PETRI_PLACES=66, PETRI_TRANSITIONS=52} [2024-11-20 09:34:23,500 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 30 predicate places. [2024-11-20 09:34:23,501 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 52 transitions, 362 flow [2024-11-20 09:34:23,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2024-11-20 09:34:23,501 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:34:23,501 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:34:23,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-20 09:34:23,501 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 09:34:23,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:34:23,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1184458401, now seen corresponding path program 2 times [2024-11-20 09:34:23,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:34:23,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567036177] [2024-11-20 09:34:23,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:34:23,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:34:23,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:34:23,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:34:23,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:34:23,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567036177] [2024-11-20 09:34:23,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567036177] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:34:23,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:34:23,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 09:34:23,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011126264] [2024-11-20 09:34:23,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:34:23,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 09:34:23,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:34:23,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 09:34:23,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 09:34:23,576 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-20 09:34:23,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 52 transitions, 362 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2024-11-20 09:34:23,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:34:23,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-20 09:34:23,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:34:23,769 INFO L124 PetriNetUnfolderBase]: 1447/1987 cut-off events. [2024-11-20 09:34:23,769 INFO L125 PetriNetUnfolderBase]: For 6916/6916 co-relation queries the response was YES. [2024-11-20 09:34:23,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9747 conditions, 1987 events. 1447/1987 cut-off events. For 6916/6916 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 8177 event pairs, 375 based on Foata normal form. 68/2045 useless extension candidates. Maximal degree in co-relation 8621. Up to 1150 conditions per place. [2024-11-20 09:34:23,781 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 111 selfloop transitions, 8 changer transitions 0/124 dead transitions. [2024-11-20 09:34:23,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 124 transitions, 1092 flow [2024-11-20 09:34:23,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:34:23,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:34:23,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 111 transitions. [2024-11-20 09:34:23,782 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.69375 [2024-11-20 09:34:23,783 INFO L175 Difference]: Start difference. First operand has 66 places, 52 transitions, 362 flow. Second operand 5 states and 111 transitions. [2024-11-20 09:34:23,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 124 transitions, 1092 flow [2024-11-20 09:34:23,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 124 transitions, 1034 flow, removed 20 selfloop flow, removed 2 redundant places. [2024-11-20 09:34:23,790 INFO L231 Difference]: Finished difference. Result has 70 places, 55 transitions, 399 flow [2024-11-20 09:34:23,790 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=399, PETRI_PLACES=70, PETRI_TRANSITIONS=55} [2024-11-20 09:34:23,791 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 34 predicate places. [2024-11-20 09:34:23,791 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 55 transitions, 399 flow [2024-11-20 09:34:23,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2024-11-20 09:34:23,791 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:34:23,792 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:34:23,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-20 09:34:23,792 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 09:34:23,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:34:23,792 INFO L85 PathProgramCache]: Analyzing trace with hash -547718246, now seen corresponding path program 1 times [2024-11-20 09:34:23,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:34:23,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581055923] [2024-11-20 09:34:23,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:34:23,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:34:23,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:34:24,113 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:34:24,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:34:24,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581055923] [2024-11-20 09:34:24,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581055923] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:34:24,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501864362] [2024-11-20 09:34:24,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:34:24,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:34:24,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:34:24,120 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) [2024-11-20 09:34:24,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 09:34:24,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:34:24,274 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-20 09:34:24,276 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:34:26,562 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:34:26,562 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:34:26,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:34:26,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501864362] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:34:26,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:34:26,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 13 [2024-11-20 09:34:26,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256049825] [2024-11-20 09:34:26,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:34:26,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-20 09:34:26,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:34:26,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-20 09:34:26,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2024-11-20 09:34:26,904 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-20 09:34:26,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 55 transitions, 399 flow. Second operand has 14 states, 14 states have (on average 13.0) internal successors, (182), 14 states have internal predecessors, (182), 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) [2024-11-20 09:34:26,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:34:26,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-20 09:34:26,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:34:30,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-20 09:34:39,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-20 09:34:43,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-20 09:34:47,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-20 09:34:51,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.81s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-20 09:34:52,782 INFO L124 PetriNetUnfolderBase]: 2902/4006 cut-off events. [2024-11-20 09:34:52,783 INFO L125 PetriNetUnfolderBase]: For 14468/14468 co-relation queries the response was YES. [2024-11-20 09:34:52,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19770 conditions, 4006 events. 2902/4006 cut-off events. For 14468/14468 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 18095 event pairs, 274 based on Foata normal form. 5/4001 useless extension candidates. Maximal degree in co-relation 17393. Up to 2117 conditions per place. [2024-11-20 09:34:52,879 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 224 selfloop transitions, 129 changer transitions 12/370 dead transitions. [2024-11-20 09:34:52,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 370 transitions, 3308 flow [2024-11-20 09:34:52,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-20 09:34:52,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-20 09:34:52,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 458 transitions. [2024-11-20 09:34:52,886 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6505681818181818 [2024-11-20 09:34:52,886 INFO L175 Difference]: Start difference. First operand has 70 places, 55 transitions, 399 flow. Second operand 22 states and 458 transitions. [2024-11-20 09:34:52,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 370 transitions, 3308 flow [2024-11-20 09:34:52,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 370 transitions, 3203 flow, removed 36 selfloop flow, removed 1 redundant places. [2024-11-20 09:34:52,930 INFO L231 Difference]: Finished difference. Result has 100 places, 184 transitions, 1981 flow [2024-11-20 09:34:52,932 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1981, PETRI_PLACES=100, PETRI_TRANSITIONS=184} [2024-11-20 09:34:52,936 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 64 predicate places. [2024-11-20 09:34:52,937 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 184 transitions, 1981 flow [2024-11-20 09:34:52,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 13.0) internal successors, (182), 14 states have internal predecessors, (182), 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) [2024-11-20 09:34:52,937 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:34:52,937 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:34:52,946 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-20 09:34:53,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-20 09:34:53,142 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 09:34:53,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:34:53,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1112763494, now seen corresponding path program 1 times [2024-11-20 09:34:53,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:34:53,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806050683] [2024-11-20 09:34:53,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:34:53,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:34:53,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:34:53,502 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:34:53,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:34:53,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806050683] [2024-11-20 09:34:53,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806050683] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:34:53,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435910445] [2024-11-20 09:34:53,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:34:53,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:34:53,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:34:53,506 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) [2024-11-20 09:34:53,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 09:34:53,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:34:53,638 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-20 09:34:53,639 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:34:56,073 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:34:56,073 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:34:56,571 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:34:56,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435910445] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:34:56,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:34:56,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2024-11-20 09:34:56,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250576686] [2024-11-20 09:34:56,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:34:56,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-20 09:34:56,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:34:56,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-20 09:34:56,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-11-20 09:34:56,575 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-20 09:34:56,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 184 transitions, 1981 flow. Second operand has 16 states, 16 states have (on average 12.4375) internal successors, (199), 16 states have internal predecessors, (199), 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) [2024-11-20 09:34:56,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:34:56,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-20 09:34:56,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:35:04,168 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-20 09:35:08,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.67s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-20 09:35:11,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.99s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-20 09:35:12,687 INFO L124 PetriNetUnfolderBase]: 4543/6290 cut-off events. [2024-11-20 09:35:12,687 INFO L125 PetriNetUnfolderBase]: For 31028/31028 co-relation queries the response was YES. [2024-11-20 09:35:12,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36106 conditions, 6290 events. 4543/6290 cut-off events. For 31028/31028 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 31227 event pairs, 255 based on Foata normal form. 21/6301 useless extension candidates. Maximal degree in co-relation 35474. Up to 4263 conditions per place. [2024-11-20 09:35:12,727 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 344 selfloop transitions, 100 changer transitions 15/464 dead transitions. [2024-11-20 09:35:12,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 464 transitions, 4784 flow [2024-11-20 09:35:12,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-20 09:35:12,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-20 09:35:12,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 376 transitions. [2024-11-20 09:35:12,729 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.734375 [2024-11-20 09:35:12,729 INFO L175 Difference]: Start difference. First operand has 100 places, 184 transitions, 1981 flow. Second operand 16 states and 376 transitions. [2024-11-20 09:35:12,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 464 transitions, 4784 flow [2024-11-20 09:35:12,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 464 transitions, 4439 flow, removed 170 selfloop flow, removed 1 redundant places. [2024-11-20 09:35:12,816 INFO L231 Difference]: Finished difference. Result has 124 places, 282 transitions, 2976 flow [2024-11-20 09:35:12,816 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1636, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2976, PETRI_PLACES=124, PETRI_TRANSITIONS=282} [2024-11-20 09:35:12,817 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 88 predicate places. [2024-11-20 09:35:12,817 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 282 transitions, 2976 flow [2024-11-20 09:35:12,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.4375) internal successors, (199), 16 states have internal predecessors, (199), 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) [2024-11-20 09:35:12,817 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:35:12,817 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:35:12,825 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-20 09:35:13,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:35:13,022 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 09:35:13,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:35:13,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1400124518, now seen corresponding path program 2 times [2024-11-20 09:35:13,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:35:13,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086440939] [2024-11-20 09:35:13,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:35:13,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:35:13,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:35:13,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:35:13,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:35:13,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086440939] [2024-11-20 09:35:13,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086440939] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:35:13,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395665604] [2024-11-20 09:35:13,415 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 09:35:13,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:35:13,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:35:13,417 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) [2024-11-20 09:35:13,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-20 09:35:13,593 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 09:35:13,593 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:35:13,594 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-20 09:35:13,596 INFO L278 TraceCheckSpWp]: Computing forward predicates...