./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/popl20-figure3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d 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/popl20-figure3.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 a479da07a0fc6d1ad250c3f67241d6294523a3c8fee4f6d465a7a5bdc9204f86 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 07:12:01,547 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 07:12:01,620 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-13 07:12:01,629 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 07:12:01,630 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 07:12:01,665 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 07:12:01,665 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 07:12:01,666 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 07:12:01,666 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 07:12:01,667 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 07:12:01,667 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 07:12:01,667 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 07:12:01,668 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 07:12:01,672 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 07:12:01,672 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 07:12:01,673 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 07:12:01,673 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 07:12:01,674 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 07:12:01,677 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 07:12:01,678 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 07:12:01,678 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 07:12:01,678 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 07:12:01,679 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 07:12:01,680 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 07:12:01,680 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 07:12:01,681 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 07:12:01,681 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 07:12:01,681 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 07:12:01,681 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 07:12:01,682 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 07:12:01,682 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 07:12:01,682 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 07:12:01,683 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 07:12:01,683 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 07:12:01,684 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 07:12:01,684 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 07:12:01,684 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 07:12:01,685 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 07:12:01,685 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 07:12:01,685 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 07:12:01,685 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 07:12:01,686 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 07:12:01,686 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a479da07a0fc6d1ad250c3f67241d6294523a3c8fee4f6d465a7a5bdc9204f86 [2024-10-13 07:12:02,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 07:12:02,040 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 07:12:02,043 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 07:12:02,045 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 07:12:02,045 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 07:12:02,046 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure3.wvr.c [2024-10-13 07:12:03,526 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 07:12:03,706 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 07:12:03,706 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure3.wvr.c [2024-10-13 07:12:03,716 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f1c9df67/17da7501a1a64ed0badd485b9b45193b/FLAGd6b8b9057 [2024-10-13 07:12:03,735 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f1c9df67/17da7501a1a64ed0badd485b9b45193b [2024-10-13 07:12:03,739 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 07:12:03,741 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 07:12:03,742 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 07:12:03,744 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 07:12:03,749 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 07:12:03,750 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:12:03" (1/1) ... [2024-10-13 07:12:03,751 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b648810 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:12:03, skipping insertion in model container [2024-10-13 07:12:03,751 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:12:03" (1/1) ... [2024-10-13 07:12:03,775 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 07:12:03,957 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure3.wvr.c[2147,2160] [2024-10-13 07:12:03,963 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 07:12:03,971 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 07:12:03,986 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure3.wvr.c[2147,2160] [2024-10-13 07:12:03,987 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 07:12:04,003 INFO L204 MainTranslator]: Completed translation [2024-10-13 07:12:04,003 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:12:04 WrapperNode [2024-10-13 07:12:04,004 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 07:12:04,005 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 07:12:04,005 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 07:12:04,005 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 07:12:04,011 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:12:04" (1/1) ... [2024-10-13 07:12:04,017 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:12:04" (1/1) ... [2024-10-13 07:12:04,036 INFO L138 Inliner]: procedures = 20, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 63 [2024-10-13 07:12:04,036 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 07:12:04,037 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 07:12:04,037 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 07:12:04,037 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 07:12:04,052 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:12:04" (1/1) ... [2024-10-13 07:12:04,052 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:12:04" (1/1) ... [2024-10-13 07:12:04,053 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:12:04" (1/1) ... [2024-10-13 07:12:04,066 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-13 07:12:04,066 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:12:04" (1/1) ... [2024-10-13 07:12:04,066 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:12:04" (1/1) ... [2024-10-13 07:12:04,070 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:12:04" (1/1) ... [2024-10-13 07:12:04,076 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:12:04" (1/1) ... [2024-10-13 07:12:04,077 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:12:04" (1/1) ... [2024-10-13 07:12:04,078 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:12:04" (1/1) ... [2024-10-13 07:12:04,080 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 07:12:04,081 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 07:12:04,081 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 07:12:04,081 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 07:12:04,082 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:12:04" (1/1) ... [2024-10-13 07:12:04,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 07:12:04,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:12:04,109 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 07:12:04,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 07:12:04,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 07:12:04,149 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 07:12:04,149 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 07:12:04,149 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 07:12:04,149 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 07:12:04,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 07:12:04,150 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-13 07:12:04,150 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-13 07:12:04,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 07:12:04,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 07:12:04,151 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 07:12:04,227 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 07:12:04,229 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 07:12:04,437 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 07:12:04,437 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 07:12:04,574 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 07:12:04,574 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-13 07:12:04,574 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:12:04 BoogieIcfgContainer [2024-10-13 07:12:04,574 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 07:12:04,576 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 07:12:04,576 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 07:12:04,579 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 07:12:04,579 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:12:03" (1/3) ... [2024-10-13 07:12:04,580 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@717d95c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:12:04, skipping insertion in model container [2024-10-13 07:12:04,580 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:12:04" (2/3) ... [2024-10-13 07:12:04,580 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@717d95c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:12:04, skipping insertion in model container [2024-10-13 07:12:04,581 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:12:04" (3/3) ... [2024-10-13 07:12:04,582 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-figure3.wvr.c [2024-10-13 07:12:04,595 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 07:12:04,595 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-13 07:12:04,595 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 07:12:04,636 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-13 07:12:04,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 27 places, 22 transitions, 58 flow [2024-10-13 07:12:04,696 INFO L124 PetriNetUnfolderBase]: 2/20 cut-off events. [2024-10-13 07:12:04,696 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 07:12:04,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 20 events. 2/20 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 21 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 15. Up to 2 conditions per place. [2024-10-13 07:12:04,701 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 22 transitions, 58 flow [2024-10-13 07:12:04,704 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 19 transitions, 50 flow [2024-10-13 07:12:04,713 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 07:12:04,723 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;@43024cad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 07:12:04,723 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-10-13 07:12:04,733 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 07:12:04,733 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2024-10-13 07:12:04,733 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 07:12:04,733 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:12:04,736 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:12:04,736 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:12:04,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:12:04,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1596738301, now seen corresponding path program 1 times [2024-10-13 07:12:04,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:12:04,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647514630] [2024-10-13 07:12:04,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:12:04,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:12:04,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:12:05,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:05,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:12:05,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647514630] [2024-10-13 07:12:05,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647514630] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:12:05,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:12:05,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 07:12:05,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845469933] [2024-10-13 07:12:05,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:12:05,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 07:12:05,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:12:05,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 07:12:05,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 07:12:05,168 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-10-13 07:12:05,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 19 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:12:05,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:12:05,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-10-13 07:12:05,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:12:05,279 INFO L124 PetriNetUnfolderBase]: 76/157 cut-off events. [2024-10-13 07:12:05,280 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-13 07:12:05,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 157 events. 76/157 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 509 event pairs, 27 based on Foata normal form. 8/164 useless extension candidates. Maximal degree in co-relation 273. Up to 91 conditions per place. [2024-10-13 07:12:05,283 INFO L140 encePairwiseOnDemand]: 18/22 looper letters, 20 selfloop transitions, 2 changer transitions 3/28 dead transitions. [2024-10-13 07:12:05,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 28 transitions, 127 flow [2024-10-13 07:12:05,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 07:12:05,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 07:12:05,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 42 transitions. [2024-10-13 07:12:05,296 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6363636363636364 [2024-10-13 07:12:05,299 INFO L175 Difference]: Start difference. First operand has 24 places, 19 transitions, 50 flow. Second operand 3 states and 42 transitions. [2024-10-13 07:12:05,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 28 transitions, 127 flow [2024-10-13 07:12:05,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 28 transitions, 113 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-13 07:12:05,304 INFO L231 Difference]: Finished difference. Result has 23 places, 20 transitions, 56 flow [2024-10-13 07:12:05,305 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=23, PETRI_TRANSITIONS=20} [2024-10-13 07:12:05,309 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, -1 predicate places. [2024-10-13 07:12:05,310 INFO L471 AbstractCegarLoop]: Abstraction has has 23 places, 20 transitions, 56 flow [2024-10-13 07:12:05,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:12:05,311 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:12:05,311 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:12:05,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 07:12:05,311 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:12:05,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:12:05,312 INFO L85 PathProgramCache]: Analyzing trace with hash 832542053, now seen corresponding path program 1 times [2024-10-13 07:12:05,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:12:05,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144913012] [2024-10-13 07:12:05,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:12:05,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:12:05,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:12:05,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:05,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:12:05,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144913012] [2024-10-13 07:12:05,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144913012] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:12:05,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:12:05,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 07:12:05,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590891266] [2024-10-13 07:12:05,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:12:05,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 07:12:05,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:12:05,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 07:12:05,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-13 07:12:05,555 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 22 [2024-10-13 07:12:05,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 20 transitions, 56 flow. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:12:05,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:12:05,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 22 [2024-10-13 07:12:05,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:12:05,753 INFO L124 PetriNetUnfolderBase]: 138/266 cut-off events. [2024-10-13 07:12:05,753 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-10-13 07:12:05,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 568 conditions, 266 events. 138/266 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1056 event pairs, 60 based on Foata normal form. 0/220 useless extension candidates. Maximal degree in co-relation 227. Up to 172 conditions per place. [2024-10-13 07:12:05,758 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 29 selfloop transitions, 7 changer transitions 3/42 dead transitions. [2024-10-13 07:12:05,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 42 transitions, 183 flow [2024-10-13 07:12:05,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 07:12:05,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 07:12:05,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 60 transitions. [2024-10-13 07:12:05,761 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-10-13 07:12:05,761 INFO L175 Difference]: Start difference. First operand has 23 places, 20 transitions, 56 flow. Second operand 5 states and 60 transitions. [2024-10-13 07:12:05,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 42 transitions, 183 flow [2024-10-13 07:12:05,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 42 transitions, 181 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 07:12:05,763 INFO L231 Difference]: Finished difference. Result has 29 places, 26 transitions, 106 flow [2024-10-13 07:12:05,765 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=106, PETRI_PLACES=29, PETRI_TRANSITIONS=26} [2024-10-13 07:12:05,766 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 5 predicate places. [2024-10-13 07:12:05,766 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 26 transitions, 106 flow [2024-10-13 07:12:05,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:12:05,766 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:12:05,767 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:12:05,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 07:12:05,767 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:12:05,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:12:05,770 INFO L85 PathProgramCache]: Analyzing trace with hash -558101359, now seen corresponding path program 2 times [2024-10-13 07:12:05,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:12:05,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820341511] [2024-10-13 07:12:05,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:12:05,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:12:05,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:12:05,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:05,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:12:05,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820341511] [2024-10-13 07:12:05,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820341511] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:12:05,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:12:05,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 07:12:05,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882378114] [2024-10-13 07:12:05,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:12:05,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 07:12:05,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:12:05,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 07:12:05,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-13 07:12:05,981 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 22 [2024-10-13 07:12:05,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 106 flow. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:12:05,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:12:05,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 22 [2024-10-13 07:12:05,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:12:06,156 INFO L124 PetriNetUnfolderBase]: 158/300 cut-off events. [2024-10-13 07:12:06,156 INFO L125 PetriNetUnfolderBase]: For 162/162 co-relation queries the response was YES. [2024-10-13 07:12:06,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 867 conditions, 300 events. 158/300 cut-off events. For 162/162 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1220 event pairs, 4 based on Foata normal form. 9/307 useless extension candidates. Maximal degree in co-relation 387. Up to 124 conditions per place. [2024-10-13 07:12:06,161 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 45 selfloop transitions, 13 changer transitions 1/62 dead transitions. [2024-10-13 07:12:06,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 62 transitions, 350 flow [2024-10-13 07:12:06,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 07:12:06,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 07:12:06,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 84 transitions. [2024-10-13 07:12:06,163 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-10-13 07:12:06,163 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 106 flow. Second operand 7 states and 84 transitions. [2024-10-13 07:12:06,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 62 transitions, 350 flow [2024-10-13 07:12:06,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 62 transitions, 348 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-13 07:12:06,167 INFO L231 Difference]: Finished difference. Result has 41 places, 35 transitions, 212 flow [2024-10-13 07:12:06,167 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=212, PETRI_PLACES=41, PETRI_TRANSITIONS=35} [2024-10-13 07:12:06,168 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 17 predicate places. [2024-10-13 07:12:06,168 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 212 flow [2024-10-13 07:12:06,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:12:06,168 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:12:06,168 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:12:06,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 07:12:06,169 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:12:06,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:12:06,169 INFO L85 PathProgramCache]: Analyzing trace with hash 579789325, now seen corresponding path program 3 times [2024-10-13 07:12:06,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:12:06,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818352847] [2024-10-13 07:12:06,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:12:06,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:12:06,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:12:06,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:06,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:12:06,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818352847] [2024-10-13 07:12:06,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818352847] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:12:06,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:12:06,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 07:12:06,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320479273] [2024-10-13 07:12:06,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:12:06,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 07:12:06,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:12:06,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 07:12:06,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 07:12:06,274 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 22 [2024-10-13 07:12:06,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 212 flow. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:12:06,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:12:06,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 22 [2024-10-13 07:12:06,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:12:06,411 INFO L124 PetriNetUnfolderBase]: 207/392 cut-off events. [2024-10-13 07:12:06,411 INFO L125 PetriNetUnfolderBase]: For 715/715 co-relation queries the response was YES. [2024-10-13 07:12:06,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1424 conditions, 392 events. 207/392 cut-off events. For 715/715 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1557 event pairs, 65 based on Foata normal form. 6/393 useless extension candidates. Maximal degree in co-relation 947. Up to 168 conditions per place. [2024-10-13 07:12:06,417 INFO L140 encePairwiseOnDemand]: 17/22 looper letters, 41 selfloop transitions, 10 changer transitions 2/56 dead transitions. [2024-10-13 07:12:06,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 56 transitions, 431 flow [2024-10-13 07:12:06,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 07:12:06,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 07:12:06,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 57 transitions. [2024-10-13 07:12:06,419 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5181818181818182 [2024-10-13 07:12:06,419 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 212 flow. Second operand 5 states and 57 transitions. [2024-10-13 07:12:06,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 56 transitions, 431 flow [2024-10-13 07:12:06,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 56 transitions, 431 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 07:12:06,424 INFO L231 Difference]: Finished difference. Result has 48 places, 37 transitions, 268 flow [2024-10-13 07:12:06,425 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=268, PETRI_PLACES=48, PETRI_TRANSITIONS=37} [2024-10-13 07:12:06,425 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 24 predicate places. [2024-10-13 07:12:06,426 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 37 transitions, 268 flow [2024-10-13 07:12:06,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:12:06,426 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:12:06,426 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:12:06,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 07:12:06,427 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:12:06,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:12:06,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1175860589, now seen corresponding path program 4 times [2024-10-13 07:12:06,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:12:06,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192775672] [2024-10-13 07:12:06,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:12:06,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:12:06,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:12:06,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:06,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:12:06,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192775672] [2024-10-13 07:12:06,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192775672] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:12:06,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061289041] [2024-10-13 07:12:06,577 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 07:12:06,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:12:06,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:12:06,580 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) [2024-10-13 07:12:06,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 07:12:06,645 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 07:12:06,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:12:06,648 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 07:12:06,655 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:12:06,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:06,726 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:12:06,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:06,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061289041] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:12:06,806 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:12:06,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 8 [2024-10-13 07:12:06,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35255249] [2024-10-13 07:12:06,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:12:06,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 07:12:06,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:12:06,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 07:12:06,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-13 07:12:06,817 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 22 [2024-10-13 07:12:06,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 37 transitions, 268 flow. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:12:06,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:12:06,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 22 [2024-10-13 07:12:06,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:12:07,068 INFO L124 PetriNetUnfolderBase]: 302/564 cut-off events. [2024-10-13 07:12:07,069 INFO L125 PetriNetUnfolderBase]: For 1403/1403 co-relation queries the response was YES. [2024-10-13 07:12:07,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2202 conditions, 564 events. 302/564 cut-off events. For 1403/1403 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2598 event pairs, 33 based on Foata normal form. 9/565 useless extension candidates. Maximal degree in co-relation 1549. Up to 155 conditions per place. [2024-10-13 07:12:07,076 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 48 selfloop transitions, 35 changer transitions 2/88 dead transitions. [2024-10-13 07:12:07,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 88 transitions, 739 flow [2024-10-13 07:12:07,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 07:12:07,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 07:12:07,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-10-13 07:12:07,077 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5181818181818182 [2024-10-13 07:12:07,078 INFO L175 Difference]: Start difference. First operand has 48 places, 37 transitions, 268 flow. Second operand 10 states and 114 transitions. [2024-10-13 07:12:07,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 88 transitions, 739 flow [2024-10-13 07:12:07,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 88 transitions, 715 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-10-13 07:12:07,086 INFO L231 Difference]: Finished difference. Result has 60 places, 54 transitions, 520 flow [2024-10-13 07:12:07,086 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=520, PETRI_PLACES=60, PETRI_TRANSITIONS=54} [2024-10-13 07:12:07,087 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 36 predicate places. [2024-10-13 07:12:07,087 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 54 transitions, 520 flow [2024-10-13 07:12:07,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:12:07,087 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:12:07,088 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:12:07,108 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 07:12:07,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:12:07,294 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:12:07,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:12:07,295 INFO L85 PathProgramCache]: Analyzing trace with hash 2014856815, now seen corresponding path program 5 times [2024-10-13 07:12:07,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:12:07,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227458545] [2024-10-13 07:12:07,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:12:07,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:12:07,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:12:07,386 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:07,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:12:07,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227458545] [2024-10-13 07:12:07,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227458545] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:12:07,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:12:07,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 07:12:07,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702647755] [2024-10-13 07:12:07,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:12:07,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 07:12:07,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:12:07,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 07:12:07,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-13 07:12:07,392 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 22 [2024-10-13 07:12:07,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 54 transitions, 520 flow. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:12:07,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:12:07,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 22 [2024-10-13 07:12:07,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:12:07,518 INFO L124 PetriNetUnfolderBase]: 304/565 cut-off events. [2024-10-13 07:12:07,518 INFO L125 PetriNetUnfolderBase]: For 2946/2946 co-relation queries the response was YES. [2024-10-13 07:12:07,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2698 conditions, 565 events. 304/565 cut-off events. For 2946/2946 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2521 event pairs, 89 based on Foata normal form. 2/562 useless extension candidates. Maximal degree in co-relation 2023. Up to 294 conditions per place. [2024-10-13 07:12:07,525 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 47 selfloop transitions, 20 changer transitions 1/71 dead transitions. [2024-10-13 07:12:07,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 71 transitions, 791 flow [2024-10-13 07:12:07,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 07:12:07,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 07:12:07,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 58 transitions. [2024-10-13 07:12:07,527 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5272727272727272 [2024-10-13 07:12:07,527 INFO L175 Difference]: Start difference. First operand has 60 places, 54 transitions, 520 flow. Second operand 5 states and 58 transitions. [2024-10-13 07:12:07,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 71 transitions, 791 flow [2024-10-13 07:12:07,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 71 transitions, 711 flow, removed 31 selfloop flow, removed 3 redundant places. [2024-10-13 07:12:07,537 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 553 flow [2024-10-13 07:12:07,537 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=553, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2024-10-13 07:12:07,537 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 38 predicate places. [2024-10-13 07:12:07,538 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 553 flow [2024-10-13 07:12:07,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:12:07,538 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:12:07,538 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:12:07,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 07:12:07,539 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:12:07,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:12:07,539 INFO L85 PathProgramCache]: Analyzing trace with hash 311973905, now seen corresponding path program 6 times [2024-10-13 07:12:07,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:12:07,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182259276] [2024-10-13 07:12:07,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:12:07,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:12:07,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:12:07,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:07,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:12:07,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182259276] [2024-10-13 07:12:07,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182259276] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:12:07,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:12:07,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 07:12:07,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171326633] [2024-10-13 07:12:07,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:12:07,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 07:12:07,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:12:07,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 07:12:07,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-10-13 07:12:07,639 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 22 [2024-10-13 07:12:07,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 553 flow. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:12:07,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:12:07,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 22 [2024-10-13 07:12:07,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:12:07,775 INFO L124 PetriNetUnfolderBase]: 302/558 cut-off events. [2024-10-13 07:12:07,775 INFO L125 PetriNetUnfolderBase]: For 2921/2921 co-relation queries the response was YES. [2024-10-13 07:12:07,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2629 conditions, 558 events. 302/558 cut-off events. For 2921/2921 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2423 event pairs, 86 based on Foata normal form. 7/560 useless extension candidates. Maximal degree in co-relation 2057. Up to 275 conditions per place. [2024-10-13 07:12:07,782 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 45 selfloop transitions, 26 changer transitions 0/74 dead transitions. [2024-10-13 07:12:07,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 74 transitions, 784 flow [2024-10-13 07:12:07,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 07:12:07,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 07:12:07,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 67 transitions. [2024-10-13 07:12:07,783 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5075757575757576 [2024-10-13 07:12:07,783 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 553 flow. Second operand 6 states and 67 transitions. [2024-10-13 07:12:07,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 74 transitions, 784 flow [2024-10-13 07:12:07,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 74 transitions, 738 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-10-13 07:12:07,791 INFO L231 Difference]: Finished difference. Result has 63 places, 59 transitions, 583 flow [2024-10-13 07:12:07,791 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=497, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=583, PETRI_PLACES=63, PETRI_TRANSITIONS=59} [2024-10-13 07:12:07,792 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 39 predicate places. [2024-10-13 07:12:07,792 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 59 transitions, 583 flow [2024-10-13 07:12:07,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:12:07,793 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:12:07,793 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:12:07,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 07:12:07,793 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:12:07,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:12:07,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1400090670, now seen corresponding path program 1 times [2024-10-13 07:12:07,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:12:07,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878570503] [2024-10-13 07:12:07,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:12:07,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:12:07,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:12:07,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:07,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:12:07,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878570503] [2024-10-13 07:12:07,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878570503] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:12:07,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517279991] [2024-10-13 07:12:07,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:12:07,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:12:07,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:12:07,911 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) [2024-10-13 07:12:07,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 07:12:07,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:12:07,965 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-13 07:12:07,966 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:12:08,007 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:12:08,008 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:12:08,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:12:08,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517279991] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:12:08,071 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:12:08,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 6 [2024-10-13 07:12:08,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200052632] [2024-10-13 07:12:08,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:12:08,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 07:12:08,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:12:08,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 07:12:08,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-13 07:12:08,074 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-10-13 07:12:08,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 59 transitions, 583 flow. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:12:08,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:12:08,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-10-13 07:12:08,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:12:08,239 INFO L124 PetriNetUnfolderBase]: 460/908 cut-off events. [2024-10-13 07:12:08,240 INFO L125 PetriNetUnfolderBase]: For 4604/4649 co-relation queries the response was YES. [2024-10-13 07:12:08,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4151 conditions, 908 events. 460/908 cut-off events. For 4604/4649 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4677 event pairs, 76 based on Foata normal form. 18/921 useless extension candidates. Maximal degree in co-relation 2392. Up to 362 conditions per place. [2024-10-13 07:12:08,248 INFO L140 encePairwiseOnDemand]: 18/22 looper letters, 72 selfloop transitions, 5 changer transitions 6/100 dead transitions. [2024-10-13 07:12:08,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 100 transitions, 1092 flow [2024-10-13 07:12:08,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 07:12:08,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 07:12:08,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 62 transitions. [2024-10-13 07:12:08,249 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7045454545454546 [2024-10-13 07:12:08,250 INFO L175 Difference]: Start difference. First operand has 63 places, 59 transitions, 583 flow. Second operand 4 states and 62 transitions. [2024-10-13 07:12:08,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 100 transitions, 1092 flow [2024-10-13 07:12:08,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 100 transitions, 1031 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-10-13 07:12:08,261 INFO L231 Difference]: Finished difference. Result has 65 places, 61 transitions, 579 flow [2024-10-13 07:12:08,261 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=541, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=579, PETRI_PLACES=65, PETRI_TRANSITIONS=61} [2024-10-13 07:12:08,262 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 41 predicate places. [2024-10-13 07:12:08,262 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 61 transitions, 579 flow [2024-10-13 07:12:08,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:12:08,262 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:12:08,262 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:12:08,279 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 07:12:08,466 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,SelfDestructingSolverStorable7 [2024-10-13 07:12:08,467 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:12:08,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:12:08,467 INFO L85 PathProgramCache]: Analyzing trace with hash 617942674, now seen corresponding path program 2 times [2024-10-13 07:12:08,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:12:08,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861742918] [2024-10-13 07:12:08,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:12:08,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:12:08,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:12:08,623 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:08,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:12:08,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861742918] [2024-10-13 07:12:08,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861742918] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:12:08,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323247811] [2024-10-13 07:12:08,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 07:12:08,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:12:08,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:12:08,627 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) [2024-10-13 07:12:08,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 07:12:08,689 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 07:12:08,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:12:08,690 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 07:12:08,691 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:12:08,787 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:08,787 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:12:08,876 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:08,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323247811] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:12:08,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:12:08,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-10-13 07:12:08,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639683430] [2024-10-13 07:12:08,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:12:08,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 07:12:08,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:12:08,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 07:12:08,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2024-10-13 07:12:08,979 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 22 [2024-10-13 07:12:08,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 61 transitions, 579 flow. Second operand has 15 states, 15 states have (on average 6.666666666666667) internal successors, (100), 15 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:12:08,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:12:08,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 22 [2024-10-13 07:12:08,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:12:10,046 INFO L124 PetriNetUnfolderBase]: 1125/1921 cut-off events. [2024-10-13 07:12:10,046 INFO L125 PetriNetUnfolderBase]: For 9010/9036 co-relation queries the response was YES. [2024-10-13 07:12:10,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9391 conditions, 1921 events. 1125/1921 cut-off events. For 9010/9036 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 9453 event pairs, 66 based on Foata normal form. 22/1941 useless extension candidates. Maximal degree in co-relation 5537. Up to 665 conditions per place. [2024-10-13 07:12:10,063 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 121 selfloop transitions, 87 changer transitions 7/220 dead transitions. [2024-10-13 07:12:10,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 220 transitions, 2345 flow [2024-10-13 07:12:10,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-13 07:12:10,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-13 07:12:10,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 231 transitions. [2024-10-13 07:12:10,065 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-13 07:12:10,065 INFO L175 Difference]: Start difference. First operand has 65 places, 61 transitions, 579 flow. Second operand 21 states and 231 transitions. [2024-10-13 07:12:10,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 220 transitions, 2345 flow [2024-10-13 07:12:10,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 220 transitions, 2313 flow, removed 16 selfloop flow, removed 0 redundant places. [2024-10-13 07:12:10,085 INFO L231 Difference]: Finished difference. Result has 94 places, 126 transitions, 1475 flow [2024-10-13 07:12:10,086 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=575, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1475, PETRI_PLACES=94, PETRI_TRANSITIONS=126} [2024-10-13 07:12:10,086 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 70 predicate places. [2024-10-13 07:12:10,087 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 126 transitions, 1475 flow [2024-10-13 07:12:10,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.666666666666667) internal successors, (100), 15 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:12:10,087 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:12:10,087 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:12:10,104 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 07:12:10,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:12:10,292 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:12:10,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:12:10,293 INFO L85 PathProgramCache]: Analyzing trace with hash -754753068, now seen corresponding path program 3 times [2024-10-13 07:12:10,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:12:10,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254066106] [2024-10-13 07:12:10,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:12:10,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:12:10,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:12:10,464 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:10,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:12:10,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254066106] [2024-10-13 07:12:10,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254066106] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:12:10,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919694519] [2024-10-13 07:12:10,465 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 07:12:10,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:12:10,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:12:10,468 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) [2024-10-13 07:12:10,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 07:12:10,522 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-13 07:12:10,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:12:10,524 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 07:12:10,525 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:12:10,612 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:10,613 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:12:10,712 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:10,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919694519] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:12:10,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:12:10,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-10-13 07:12:10,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812026100] [2024-10-13 07:12:10,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:12:10,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 07:12:10,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:12:10,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 07:12:10,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2024-10-13 07:12:10,728 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 22 [2024-10-13 07:12:10,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 126 transitions, 1475 flow. Second operand has 15 states, 15 states have (on average 6.4) internal successors, (96), 15 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:12:10,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:12:10,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 22 [2024-10-13 07:12:10,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:12:11,259 INFO L124 PetriNetUnfolderBase]: 1223/2101 cut-off events. [2024-10-13 07:12:11,260 INFO L125 PetriNetUnfolderBase]: For 22664/22700 co-relation queries the response was YES. [2024-10-13 07:12:11,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12519 conditions, 2101 events. 1223/2101 cut-off events. For 22664/22700 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 10797 event pairs, 171 based on Foata normal form. 28/2121 useless extension candidates. Maximal degree in co-relation 8237. Up to 898 conditions per place. [2024-10-13 07:12:11,283 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 123 selfloop transitions, 75 changer transitions 11/214 dead transitions. [2024-10-13 07:12:11,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 214 transitions, 2841 flow [2024-10-13 07:12:11,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-13 07:12:11,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-13 07:12:11,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 155 transitions. [2024-10-13 07:12:11,285 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4696969696969697 [2024-10-13 07:12:11,285 INFO L175 Difference]: Start difference. First operand has 94 places, 126 transitions, 1475 flow. Second operand 15 states and 155 transitions. [2024-10-13 07:12:11,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 214 transitions, 2841 flow [2024-10-13 07:12:11,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 214 transitions, 2499 flow, removed 154 selfloop flow, removed 3 redundant places. [2024-10-13 07:12:11,330 INFO L231 Difference]: Finished difference. Result has 115 places, 151 transitions, 1827 flow [2024-10-13 07:12:11,330 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1225, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1827, PETRI_PLACES=115, PETRI_TRANSITIONS=151} [2024-10-13 07:12:11,330 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 91 predicate places. [2024-10-13 07:12:11,331 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 151 transitions, 1827 flow [2024-10-13 07:12:11,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.4) internal successors, (96), 15 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:12:11,331 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:12:11,331 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:12:11,351 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-13 07:12:11,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:12:11,532 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:12:11,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:12:11,532 INFO L85 PathProgramCache]: Analyzing trace with hash 346791640, now seen corresponding path program 4 times [2024-10-13 07:12:11,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:12:11,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132639805] [2024-10-13 07:12:11,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:12:11,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:12:11,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:12:11,691 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:11,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:12:11,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132639805] [2024-10-13 07:12:11,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132639805] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:12:11,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221723648] [2024-10-13 07:12:11,692 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 07:12:11,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:12:11,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:12:11,694 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:12:11,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 07:12:11,747 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 07:12:11,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:12:11,748 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 07:12:11,749 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:12:11,819 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:11,819 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:12:11,900 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:11,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221723648] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:12:11,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:12:11,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-13 07:12:11,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76922871] [2024-10-13 07:12:11,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:12:11,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 07:12:11,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:12:11,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 07:12:11,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-10-13 07:12:11,906 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 22 [2024-10-13 07:12:11,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 151 transitions, 1827 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 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) [2024-10-13 07:12:11,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:12:11,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 22 [2024-10-13 07:12:11,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:12:12,739 INFO L124 PetriNetUnfolderBase]: 1662/2815 cut-off events. [2024-10-13 07:12:12,739 INFO L125 PetriNetUnfolderBase]: For 29389/29421 co-relation queries the response was YES. [2024-10-13 07:12:12,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16587 conditions, 2815 events. 1662/2815 cut-off events. For 29389/29421 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 15024 event pairs, 37 based on Foata normal form. 70/2869 useless extension candidates. Maximal degree in co-relation 16142. Up to 899 conditions per place. [2024-10-13 07:12:12,773 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 127 selfloop transitions, 234 changer transitions 3/369 dead transitions. [2024-10-13 07:12:12,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 369 transitions, 4845 flow [2024-10-13 07:12:12,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-13 07:12:12,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-13 07:12:12,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 228 transitions. [2024-10-13 07:12:12,775 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4505928853754941 [2024-10-13 07:12:12,775 INFO L175 Difference]: Start difference. First operand has 115 places, 151 transitions, 1827 flow. Second operand 23 states and 228 transitions. [2024-10-13 07:12:12,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 369 transitions, 4845 flow [2024-10-13 07:12:12,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 369 transitions, 4706 flow, removed 52 selfloop flow, removed 3 redundant places. [2024-10-13 07:12:12,850 INFO L231 Difference]: Finished difference. Result has 143 places, 286 transitions, 4253 flow [2024-10-13 07:12:12,850 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1752, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=4253, PETRI_PLACES=143, PETRI_TRANSITIONS=286} [2024-10-13 07:12:12,853 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 119 predicate places. [2024-10-13 07:12:12,853 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 286 transitions, 4253 flow [2024-10-13 07:12:12,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 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) [2024-10-13 07:12:12,853 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:12:12,853 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:12:12,871 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-13 07:12:13,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-13 07:12:13,054 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:12:13,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:12:13,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1026085048, now seen corresponding path program 5 times [2024-10-13 07:12:13,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:12:13,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770055711] [2024-10-13 07:12:13,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:12:13,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:12:13,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:12:13,185 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:13,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:12:13,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770055711] [2024-10-13 07:12:13,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770055711] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:12:13,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933590404] [2024-10-13 07:12:13,186 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 07:12:13,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:12:13,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:12:13,189 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:12:13,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-13 07:12:13,241 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 07:12:13,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:12:13,243 INFO L255 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-13 07:12:13,244 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:12:13,379 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:13,380 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:12:13,528 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:13,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933590404] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:12:13,529 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:12:13,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2024-10-13 07:12:13,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35378185] [2024-10-13 07:12:13,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:12:13,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-13 07:12:13,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:12:13,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-13 07:12:13,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2024-10-13 07:12:13,538 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 22 [2024-10-13 07:12:13,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 286 transitions, 4253 flow. Second operand has 17 states, 17 states have (on average 6.176470588235294) internal successors, (105), 17 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:12:13,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:12:13,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 22 [2024-10-13 07:12:13,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:12:15,321 INFO L124 PetriNetUnfolderBase]: 2330/4008 cut-off events. [2024-10-13 07:12:15,322 INFO L125 PetriNetUnfolderBase]: For 49556/49602 co-relation queries the response was YES. [2024-10-13 07:12:15,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26609 conditions, 4008 events. 2330/4008 cut-off events. For 49556/49602 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 23531 event pairs, 87 based on Foata normal form. 142/4130 useless extension candidates. Maximal degree in co-relation 26193. Up to 1248 conditions per place. [2024-10-13 07:12:15,368 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 156 selfloop transitions, 412 changer transitions 7/580 dead transitions. [2024-10-13 07:12:15,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 580 transitions, 9060 flow [2024-10-13 07:12:15,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-10-13 07:12:15,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-10-13 07:12:15,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 342 transitions. [2024-10-13 07:12:15,371 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4201474201474201 [2024-10-13 07:12:15,371 INFO L175 Difference]: Start difference. First operand has 143 places, 286 transitions, 4253 flow. Second operand 37 states and 342 transitions. [2024-10-13 07:12:15,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 580 transitions, 9060 flow [2024-10-13 07:12:15,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 580 transitions, 7807 flow, removed 547 selfloop flow, removed 3 redundant places. [2024-10-13 07:12:15,550 INFO L231 Difference]: Finished difference. Result has 193 places, 457 transitions, 7343 flow [2024-10-13 07:12:15,551 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3735, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=238, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=7343, PETRI_PLACES=193, PETRI_TRANSITIONS=457} [2024-10-13 07:12:15,551 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 169 predicate places. [2024-10-13 07:12:15,552 INFO L471 AbstractCegarLoop]: Abstraction has has 193 places, 457 transitions, 7343 flow [2024-10-13 07:12:15,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.176470588235294) internal successors, (105), 17 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:12:15,552 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:12:15,552 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:12:15,570 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-13 07:12:15,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:12:15,757 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:12:15,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:12:15,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1591637122, now seen corresponding path program 6 times [2024-10-13 07:12:15,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:12:15,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944136577] [2024-10-13 07:12:15,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:12:15,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:12:15,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:12:15,998 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:15,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:12:15,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944136577] [2024-10-13 07:12:15,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944136577] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:12:15,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581339581] [2024-10-13 07:12:15,999 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 07:12:15,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:12:15,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:12:16,000 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:12:16,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-13 07:12:16,045 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-10-13 07:12:16,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:12:16,047 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 07:12:16,048 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:12:16,144 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:16,144 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:12:16,236 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:16,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581339581] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:12:16,236 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:12:16,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-10-13 07:12:16,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869055415] [2024-10-13 07:12:16,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:12:16,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 07:12:16,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:12:16,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 07:12:16,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-10-13 07:12:16,241 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 22 [2024-10-13 07:12:16,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 457 transitions, 7343 flow. Second operand has 14 states, 14 states have (on average 6.857142857142857) internal successors, (96), 14 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:12:16,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:12:16,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 22 [2024-10-13 07:12:16,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:12:17,962 INFO L124 PetriNetUnfolderBase]: 2879/4991 cut-off events. [2024-10-13 07:12:17,962 INFO L125 PetriNetUnfolderBase]: For 63005/63057 co-relation queries the response was YES. [2024-10-13 07:12:17,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34008 conditions, 4991 events. 2879/4991 cut-off events. For 63005/63057 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 30727 event pairs, 110 based on Foata normal form. 66/5017 useless extension candidates. Maximal degree in co-relation 32941. Up to 957 conditions per place. [2024-10-13 07:12:18,022 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 184 selfloop transitions, 509 changer transitions 5/703 dead transitions. [2024-10-13 07:12:18,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 703 transitions, 11923 flow [2024-10-13 07:12:18,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-10-13 07:12:18,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-10-13 07:12:18,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 327 transitions. [2024-10-13 07:12:18,024 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45041322314049587 [2024-10-13 07:12:18,024 INFO L175 Difference]: Start difference. First operand has 193 places, 457 transitions, 7343 flow. Second operand 33 states and 327 transitions. [2024-10-13 07:12:18,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 703 transitions, 11923 flow [2024-10-13 07:12:18,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 703 transitions, 10902 flow, removed 309 selfloop flow, removed 8 redundant places. [2024-10-13 07:12:18,581 INFO L231 Difference]: Finished difference. Result has 225 places, 595 transitions, 10155 flow [2024-10-13 07:12:18,582 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=6549, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=369, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=10155, PETRI_PLACES=225, PETRI_TRANSITIONS=595} [2024-10-13 07:12:18,582 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 201 predicate places. [2024-10-13 07:12:18,582 INFO L471 AbstractCegarLoop]: Abstraction has has 225 places, 595 transitions, 10155 flow [2024-10-13 07:12:18,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.857142857142857) internal successors, (96), 14 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:12:18,583 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:12:18,583 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:12:18,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-13 07:12:18,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:12:18,785 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:12:18,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:12:18,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1325954112, now seen corresponding path program 7 times [2024-10-13 07:12:18,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:12:18,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968215400] [2024-10-13 07:12:18,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:12:18,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:12:18,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:12:18,925 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:18,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:12:18,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968215400] [2024-10-13 07:12:18,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968215400] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:12:18,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577776412] [2024-10-13 07:12:18,926 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-13 07:12:18,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:12:18,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:12:18,928 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:12:18,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-13 07:12:18,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:12:18,980 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 07:12:18,981 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:12:19,055 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:19,056 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:12:19,119 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:19,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577776412] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:12:19,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:12:19,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-10-13 07:12:19,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434266737] [2024-10-13 07:12:19,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:12:19,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 07:12:19,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:12:19,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 07:12:19,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-10-13 07:12:19,143 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 22 [2024-10-13 07:12:19,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 595 transitions, 10155 flow. Second operand has 14 states, 14 states have (on average 6.5) internal successors, (91), 14 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:12:19,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:12:19,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 22 [2024-10-13 07:12:19,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:12:20,943 INFO L124 PetriNetUnfolderBase]: 3233/5574 cut-off events. [2024-10-13 07:12:20,943 INFO L125 PetriNetUnfolderBase]: For 77004/77058 co-relation queries the response was YES. [2024-10-13 07:12:20,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39625 conditions, 5574 events. 3233/5574 cut-off events. For 77004/77058 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 34084 event pairs, 227 based on Foata normal form. 40/5576 useless extension candidates. Maximal degree in co-relation 39117. Up to 1116 conditions per place. [2024-10-13 07:12:21,009 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 237 selfloop transitions, 507 changer transitions 3/752 dead transitions. [2024-10-13 07:12:21,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 752 transitions, 13796 flow [2024-10-13 07:12:21,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-13 07:12:21,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-13 07:12:21,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 250 transitions. [2024-10-13 07:12:21,012 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49407114624505927 [2024-10-13 07:12:21,012 INFO L175 Difference]: Start difference. First operand has 225 places, 595 transitions, 10155 flow. Second operand 23 states and 250 transitions. [2024-10-13 07:12:21,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 752 transitions, 13796 flow [2024-10-13 07:12:21,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 752 transitions, 13518 flow, removed 97 selfloop flow, removed 4 redundant places. [2024-10-13 07:12:21,659 INFO L231 Difference]: Finished difference. Result has 245 places, 660 transitions, 12460 flow [2024-10-13 07:12:21,659 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=9780, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=587, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=437, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=12460, PETRI_PLACES=245, PETRI_TRANSITIONS=660} [2024-10-13 07:12:21,660 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 221 predicate places. [2024-10-13 07:12:21,660 INFO L471 AbstractCegarLoop]: Abstraction has has 245 places, 660 transitions, 12460 flow [2024-10-13 07:12:21,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.5) internal successors, (91), 14 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:12:21,660 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:12:21,660 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:12:21,673 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-13 07:12:21,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-13 07:12:21,861 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:12:21,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:12:21,862 INFO L85 PathProgramCache]: Analyzing trace with hash -60427610, now seen corresponding path program 8 times [2024-10-13 07:12:21,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:12:21,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69100] [2024-10-13 07:12:21,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:12:21,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:12:21,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:12:21,999 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:21,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:12:22,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69100] [2024-10-13 07:12:22,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69100] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:12:22,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755259442] [2024-10-13 07:12:22,000 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 07:12:22,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:12:22,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:12:22,002 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:12:22,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-13 07:12:22,049 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 07:12:22,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:12:22,050 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 07:12:22,051 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:12:22,108 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:22,108 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:12:22,222 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:22,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755259442] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:12:22,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:12:22,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-10-13 07:12:22,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294519287] [2024-10-13 07:12:22,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:12:22,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-13 07:12:22,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:12:22,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-13 07:12:22,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2024-10-13 07:12:22,229 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 22 [2024-10-13 07:12:22,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 660 transitions, 12460 flow. Second operand has 16 states, 16 states have (on average 6.4375) internal successors, (103), 16 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:12:22,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:12:22,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 22 [2024-10-13 07:12:22,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:12:24,080 INFO L124 PetriNetUnfolderBase]: 4095/7043 cut-off events. [2024-10-13 07:12:24,080 INFO L125 PetriNetUnfolderBase]: For 117761/117825 co-relation queries the response was YES. [2024-10-13 07:12:24,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53687 conditions, 7043 events. 4095/7043 cut-off events. For 117761/117825 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 44957 event pairs, 297 based on Foata normal form. 82/7059 useless extension candidates. Maximal degree in co-relation 52822. Up to 1329 conditions per place. [2024-10-13 07:12:24,153 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 242 selfloop transitions, 691 changer transitions 9/947 dead transitions. [2024-10-13 07:12:24,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 947 transitions, 19101 flow [2024-10-13 07:12:24,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-13 07:12:24,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-10-13 07:12:24,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 278 transitions. [2024-10-13 07:12:24,155 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4512987012987013 [2024-10-13 07:12:24,155 INFO L175 Difference]: Start difference. First operand has 245 places, 660 transitions, 12460 flow. Second operand 28 states and 278 transitions. [2024-10-13 07:12:24,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 947 transitions, 19101 flow [2024-10-13 07:12:25,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 947 transitions, 18582 flow, removed 127 selfloop flow, removed 5 redundant places. [2024-10-13 07:12:25,391 INFO L231 Difference]: Finished difference. Result has 275 places, 865 transitions, 18660 flow [2024-10-13 07:12:25,392 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=12055, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=660, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=506, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=18660, PETRI_PLACES=275, PETRI_TRANSITIONS=865} [2024-10-13 07:12:25,392 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 251 predicate places. [2024-10-13 07:12:25,392 INFO L471 AbstractCegarLoop]: Abstraction has has 275 places, 865 transitions, 18660 flow [2024-10-13 07:12:25,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.4375) internal successors, (103), 16 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:12:25,393 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:12:25,393 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:12:25,404 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-13 07:12:25,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-13 07:12:25,593 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:12:25,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:12:25,594 INFO L85 PathProgramCache]: Analyzing trace with hash -248406802, now seen corresponding path program 9 times [2024-10-13 07:12:25,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:12:25,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923810251] [2024-10-13 07:12:25,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:12:25,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:12:25,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:12:25,712 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:25,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:12:25,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923810251] [2024-10-13 07:12:25,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923810251] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:12:25,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622841170] [2024-10-13 07:12:25,713 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 07:12:25,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:12:25,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:12:25,715 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:12:25,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-13 07:12:25,770 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-13 07:12:25,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:12:25,772 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 07:12:25,773 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:12:25,831 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:25,831 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:12:25,890 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:25,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622841170] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:12:25,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:12:25,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-10-13 07:12:25,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012800010] [2024-10-13 07:12:25,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:12:25,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 07:12:25,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:12:25,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 07:12:25,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-10-13 07:12:25,906 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 22 [2024-10-13 07:12:25,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 865 transitions, 18660 flow. Second operand has 15 states, 15 states have (on average 6.4) internal successors, (96), 15 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:12:25,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:12:25,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 22 [2024-10-13 07:12:25,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:12:27,915 INFO L124 PetriNetUnfolderBase]: 4066/7007 cut-off events. [2024-10-13 07:12:27,915 INFO L125 PetriNetUnfolderBase]: For 142227/142287 co-relation queries the response was YES. [2024-10-13 07:12:27,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58388 conditions, 7007 events. 4066/7007 cut-off events. For 142227/142287 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 45100 event pairs, 626 based on Foata normal form. 40/6969 useless extension candidates. Maximal degree in co-relation 57566. Up to 2819 conditions per place. [2024-10-13 07:12:27,994 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 398 selfloop transitions, 501 changer transitions 3/907 dead transitions. [2024-10-13 07:12:27,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 907 transitions, 20775 flow [2024-10-13 07:12:27,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 07:12:27,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-13 07:12:27,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 147 transitions. [2024-10-13 07:12:27,995 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2024-10-13 07:12:27,996 INFO L175 Difference]: Start difference. First operand has 275 places, 865 transitions, 18660 flow. Second operand 14 states and 147 transitions. [2024-10-13 07:12:27,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 907 transitions, 20775 flow [2024-10-13 07:12:29,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 907 transitions, 19966 flow, removed 202 selfloop flow, removed 9 redundant places. [2024-10-13 07:12:29,740 INFO L231 Difference]: Finished difference. Result has 280 places, 865 transitions, 18876 flow [2024-10-13 07:12:29,741 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=17814, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=863, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=498, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=18876, PETRI_PLACES=280, PETRI_TRANSITIONS=865} [2024-10-13 07:12:29,741 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 256 predicate places. [2024-10-13 07:12:29,741 INFO L471 AbstractCegarLoop]: Abstraction has has 280 places, 865 transitions, 18876 flow [2024-10-13 07:12:29,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.4) internal successors, (96), 15 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:12:29,741 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:12:29,742 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:12:29,754 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-13 07:12:29,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-13 07:12:29,942 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:12:29,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:12:29,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1083488188, now seen corresponding path program 10 times [2024-10-13 07:12:29,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:12:29,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360018537] [2024-10-13 07:12:29,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:12:29,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:12:29,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:12:30,065 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:30,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:12:30,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360018537] [2024-10-13 07:12:30,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360018537] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:12:30,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701836024] [2024-10-13 07:12:30,066 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 07:12:30,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:12:30,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:12:30,068 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:12:30,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-13 07:12:30,117 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 07:12:30,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:12:30,118 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 07:12:30,119 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:12:30,196 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:30,196 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:12:30,280 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:30,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701836024] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:12:30,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:12:30,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-10-13 07:12:30,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149258035] [2024-10-13 07:12:30,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:12:30,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 07:12:30,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:12:30,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 07:12:30,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2024-10-13 07:12:30,291 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 22 [2024-10-13 07:12:30,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 865 transitions, 18876 flow. Second operand has 15 states, 15 states have (on average 6.666666666666667) internal successors, (100), 15 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:12:30,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:12:30,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 22 [2024-10-13 07:12:30,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:12:33,044 INFO L124 PetriNetUnfolderBase]: 4901/8548 cut-off events. [2024-10-13 07:12:33,045 INFO L125 PetriNetUnfolderBase]: For 173291/173355 co-relation queries the response was YES. [2024-10-13 07:12:33,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70974 conditions, 8548 events. 4901/8548 cut-off events. For 173291/173355 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 57511 event pairs, 385 based on Foata normal form. 123/8575 useless extension candidates. Maximal degree in co-relation 69875. Up to 1782 conditions per place. [2024-10-13 07:12:33,127 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 395 selfloop transitions, 843 changer transitions 1/1244 dead transitions. [2024-10-13 07:12:33,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 1244 transitions, 28054 flow [2024-10-13 07:12:33,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-10-13 07:12:33,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2024-10-13 07:12:33,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 422 transitions. [2024-10-13 07:12:33,129 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44608879492600423 [2024-10-13 07:12:33,129 INFO L175 Difference]: Start difference. First operand has 280 places, 865 transitions, 18876 flow. Second operand 43 states and 422 transitions. [2024-10-13 07:12:33,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 1244 transitions, 28054 flow [2024-10-13 07:12:34,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 1244 transitions, 27128 flow, removed 14 selfloop flow, removed 11 redundant places. [2024-10-13 07:12:35,023 INFO L231 Difference]: Finished difference. Result has 326 places, 1091 transitions, 26431 flow [2024-10-13 07:12:35,024 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=18083, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=862, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=627, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=26431, PETRI_PLACES=326, PETRI_TRANSITIONS=1091} [2024-10-13 07:12:35,024 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 302 predicate places. [2024-10-13 07:12:35,024 INFO L471 AbstractCegarLoop]: Abstraction has has 326 places, 1091 transitions, 26431 flow [2024-10-13 07:12:35,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.666666666666667) internal successors, (100), 15 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:12:35,025 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:12:35,025 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:12:35,039 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-13 07:12:35,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-13 07:12:35,230 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:12:35,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:12:35,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1668580498, now seen corresponding path program 11 times [2024-10-13 07:12:35,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:12:35,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513595603] [2024-10-13 07:12:35,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:12:35,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:12:35,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:12:35,413 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:35,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:12:35,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513595603] [2024-10-13 07:12:35,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513595603] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:12:35,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553429710] [2024-10-13 07:12:35,415 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 07:12:35,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:12:35,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:12:35,416 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:12:35,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-13 07:12:35,468 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 07:12:35,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:12:35,469 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 07:12:35,473 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:12:35,533 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:35,533 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:12:35,608 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:35,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553429710] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:12:35,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:12:35,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-10-13 07:12:35,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461792735] [2024-10-13 07:12:35,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:12:35,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-13 07:12:35,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:12:35,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-13 07:12:35,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-10-13 07:12:35,622 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 22 [2024-10-13 07:12:35,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 1091 transitions, 26431 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:12:35,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:12:35,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 22 [2024-10-13 07:12:35,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:12:38,424 INFO L124 PetriNetUnfolderBase]: 4961/8664 cut-off events. [2024-10-13 07:12:38,424 INFO L125 PetriNetUnfolderBase]: For 210186/210256 co-relation queries the response was YES. [2024-10-13 07:12:38,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77783 conditions, 8664 events. 4961/8664 cut-off events. For 210186/210256 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 58580 event pairs, 1714 based on Foata normal form. 48/8621 useless extension candidates. Maximal degree in co-relation 76564. Up to 6637 conditions per place. [2024-10-13 07:12:38,538 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 981 selfloop transitions, 177 changer transitions 4/1167 dead transitions. [2024-10-13 07:12:38,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 1167 transitions, 30031 flow [2024-10-13 07:12:38,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-13 07:12:38,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-13 07:12:38,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 114 transitions. [2024-10-13 07:12:38,540 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-10-13 07:12:38,540 INFO L175 Difference]: Start difference. First operand has 326 places, 1091 transitions, 26431 flow. Second operand 12 states and 114 transitions. [2024-10-13 07:12:38,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 1167 transitions, 30031 flow [2024-10-13 07:12:41,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 1167 transitions, 29639 flow, removed 58 selfloop flow, removed 12 redundant places. [2024-10-13 07:12:41,061 INFO L231 Difference]: Finished difference. Result has 331 places, 1117 transitions, 27278 flow [2024-10-13 07:12:41,062 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=26047, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1091, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=924, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=27278, PETRI_PLACES=331, PETRI_TRANSITIONS=1117} [2024-10-13 07:12:41,062 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 307 predicate places. [2024-10-13 07:12:41,062 INFO L471 AbstractCegarLoop]: Abstraction has has 331 places, 1117 transitions, 27278 flow [2024-10-13 07:12:41,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:12:41,062 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:12:41,063 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:12:41,077 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-13 07:12:41,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-13 07:12:41,263 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:12:41,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:12:41,264 INFO L85 PathProgramCache]: Analyzing trace with hash -386093682, now seen corresponding path program 12 times [2024-10-13 07:12:41,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:12:41,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933672460] [2024-10-13 07:12:41,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:12:41,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:12:41,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:12:41,443 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:41,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:12:41,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933672460] [2024-10-13 07:12:41,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933672460] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:12:41,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601100081] [2024-10-13 07:12:41,444 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 07:12:41,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:12:41,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:12:41,445 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:12:41,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-13 07:12:41,492 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-10-13 07:12:41,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:12:41,493 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 07:12:41,494 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:12:41,555 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:41,555 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:12:41,635 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:41,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601100081] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:12:41,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:12:41,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 15 [2024-10-13 07:12:41,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821856259] [2024-10-13 07:12:41,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:12:41,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 07:12:41,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:12:41,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 07:12:41,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-10-13 07:12:41,644 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 22 [2024-10-13 07:12:41,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 1117 transitions, 27278 flow. Second operand has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 15 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:12:41,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:12:41,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 22 [2024-10-13 07:12:41,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:12:47,318 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 [] [2024-10-13 07:12:50,107 INFO L124 PetriNetUnfolderBase]: 6505/11382 cut-off events. [2024-10-13 07:12:50,107 INFO L125 PetriNetUnfolderBase]: For 289095/289187 co-relation queries the response was YES. [2024-10-13 07:12:50,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103184 conditions, 11382 events. 6505/11382 cut-off events. For 289095/289187 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 80661 event pairs, 943 based on Foata normal form. 156/11423 useless extension candidates. Maximal degree in co-relation 102060. Up to 3724 conditions per place. [2024-10-13 07:12:50,227 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 880 selfloop transitions, 771 changer transitions 2/1658 dead transitions. [2024-10-13 07:12:50,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 1658 transitions, 42134 flow [2024-10-13 07:12:50,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-10-13 07:12:50,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-10-13 07:12:50,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 381 transitions. [2024-10-13 07:12:50,228 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4557416267942584 [2024-10-13 07:12:50,229 INFO L175 Difference]: Start difference. First operand has 331 places, 1117 transitions, 27278 flow. Second operand 38 states and 381 transitions. [2024-10-13 07:12:50,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 1658 transitions, 42134 flow [2024-10-13 07:12:54,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 1658 transitions, 41941 flow, removed 70 selfloop flow, removed 8 redundant places. [2024-10-13 07:12:54,385 INFO L231 Difference]: Finished difference. Result has 377 places, 1421 transitions, 37939 flow [2024-10-13 07:12:54,386 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=27003, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=488, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=37939, PETRI_PLACES=377, PETRI_TRANSITIONS=1421} [2024-10-13 07:12:54,387 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 353 predicate places. [2024-10-13 07:12:54,387 INFO L471 AbstractCegarLoop]: Abstraction has has 377 places, 1421 transitions, 37939 flow [2024-10-13 07:12:54,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 15 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:12:54,387 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:12:54,388 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:12:54,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-13 07:12:54,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:12:54,588 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:12:54,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:12:54,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1833216398, now seen corresponding path program 13 times [2024-10-13 07:12:54,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:12:54,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743589269] [2024-10-13 07:12:54,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:12:54,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:12:54,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:12:54,716 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:54,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:12:54,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743589269] [2024-10-13 07:12:54,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743589269] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:12:54,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572879525] [2024-10-13 07:12:54,717 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-13 07:12:54,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:12:54,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:12:54,719 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:12:54,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-13 07:12:54,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:12:54,767 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 07:12:54,768 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:12:54,837 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:54,837 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:12:54,949 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:54,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572879525] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:12:54,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:12:54,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-10-13 07:12:54,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642627691] [2024-10-13 07:12:54,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:12:54,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 07:12:54,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:12:54,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 07:12:54,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-10-13 07:12:54,954 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 22 [2024-10-13 07:12:54,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 1421 transitions, 37939 flow. Second operand has 15 states, 15 states have (on average 6.666666666666667) internal successors, (100), 15 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:12:54,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:12:54,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 22 [2024-10-13 07:12:54,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:13:00,219 INFO L124 PetriNetUnfolderBase]: 7166/12498 cut-off events. [2024-10-13 07:13:00,220 INFO L125 PetriNetUnfolderBase]: For 375773/375875 co-relation queries the response was YES. [2024-10-13 07:13:00,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121490 conditions, 12498 events. 7166/12498 cut-off events. For 375773/375875 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 89975 event pairs, 941 based on Foata normal form. 97/12470 useless extension candidates. Maximal degree in co-relation 120461. Up to 4745 conditions per place. [2024-10-13 07:13:00,372 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 650 selfloop transitions, 971 changer transitions 7/1633 dead transitions. [2024-10-13 07:13:00,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 1633 transitions, 45894 flow [2024-10-13 07:13:00,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-13 07:13:00,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-10-13 07:13:00,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 202 transitions. [2024-10-13 07:13:00,374 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4590909090909091 [2024-10-13 07:13:00,374 INFO L175 Difference]: Start difference. First operand has 377 places, 1421 transitions, 37939 flow. Second operand 20 states and 202 transitions. [2024-10-13 07:13:00,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 1633 transitions, 45894 flow [2024-10-13 07:13:06,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 1633 transitions, 45283 flow, removed 233 selfloop flow, removed 5 redundant places. [2024-10-13 07:13:06,101 INFO L231 Difference]: Finished difference. Result has 399 places, 1566 transitions, 44651 flow [2024-10-13 07:13:06,102 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=37286, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=836, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=44651, PETRI_PLACES=399, PETRI_TRANSITIONS=1566} [2024-10-13 07:13:06,102 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 375 predicate places. [2024-10-13 07:13:06,103 INFO L471 AbstractCegarLoop]: Abstraction has has 399 places, 1566 transitions, 44651 flow [2024-10-13 07:13:06,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.666666666666667) internal successors, (100), 15 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:13:06,103 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:13:06,103 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:13:06,120 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-13 07:13:06,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:13:06,308 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:13:06,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:13:06,308 INFO L85 PathProgramCache]: Analyzing trace with hash 771047482, now seen corresponding path program 14 times [2024-10-13 07:13:06,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:13:06,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000262576] [2024-10-13 07:13:06,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:13:06,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:13:06,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:13:06,420 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:13:06,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:13:06,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000262576] [2024-10-13 07:13:06,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000262576] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:13:06,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073718054] [2024-10-13 07:13:06,421 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 07:13:06,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:13:06,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:13:06,425 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:13:06,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-13 07:13:06,476 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 07:13:06,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:13:06,477 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 07:13:06,478 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:13:06,535 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:13:06,535 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:13:06,595 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:13:06,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073718054] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:13:06,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:13:06,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-10-13 07:13:06,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616055238] [2024-10-13 07:13:06,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:13:06,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 07:13:06,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:13:06,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 07:13:06,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2024-10-13 07:13:06,612 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 22 [2024-10-13 07:13:06,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 1566 transitions, 44651 flow. Second operand has 15 states, 15 states have (on average 6.333333333333333) internal successors, (95), 15 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:13:06,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:13:06,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 22 [2024-10-13 07:13:06,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:13:13,668 INFO L124 PetriNetUnfolderBase]: 8959/15472 cut-off events. [2024-10-13 07:13:13,668 INFO L125 PetriNetUnfolderBase]: For 547552/547690 co-relation queries the response was YES. [2024-10-13 07:13:13,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158929 conditions, 15472 events. 8959/15472 cut-off events. For 547552/547690 co-relation queries the response was YES. Maximal size of possible extension queue 602. Compared 113378 event pairs, 2139 based on Foata normal form. 86/15425 useless extension candidates. Maximal degree in co-relation 157773. Up to 9119 conditions per place. [2024-10-13 07:13:13,893 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 1182 selfloop transitions, 857 changer transitions 0/2044 dead transitions. [2024-10-13 07:13:13,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 2044 transitions, 61439 flow [2024-10-13 07:13:13,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-13 07:13:13,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-10-13 07:13:13,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 207 transitions. [2024-10-13 07:13:13,894 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47045454545454546 [2024-10-13 07:13:13,894 INFO L175 Difference]: Start difference. First operand has 399 places, 1566 transitions, 44651 flow. Second operand 20 states and 207 transitions. [2024-10-13 07:13:13,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 2044 transitions, 61439 flow [2024-10-13 07:13:22,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 2044 transitions, 60958 flow, removed 110 selfloop flow, removed 7 redundant places. [2024-10-13 07:13:22,171 INFO L231 Difference]: Finished difference. Result has 419 places, 1952 transitions, 58546 flow [2024-10-13 07:13:22,173 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=44190, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=524, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=916, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=58546, PETRI_PLACES=419, PETRI_TRANSITIONS=1952} [2024-10-13 07:13:22,174 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 395 predicate places. [2024-10-13 07:13:22,174 INFO L471 AbstractCegarLoop]: Abstraction has has 419 places, 1952 transitions, 58546 flow [2024-10-13 07:13:22,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.333333333333333) internal successors, (95), 15 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:13:22,174 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:13:22,174 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:13:22,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-10-13 07:13:22,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:13:22,375 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:13:22,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:13:22,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1312145248, now seen corresponding path program 15 times [2024-10-13 07:13:22,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:13:22,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244994969] [2024-10-13 07:13:22,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:13:22,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:13:22,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:13:22,483 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:13:22,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:13:22,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244994969] [2024-10-13 07:13:22,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244994969] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:13:22,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140346578] [2024-10-13 07:13:22,484 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 07:13:22,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:13:22,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:13:22,486 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:13:22,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-13 07:13:22,531 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-13 07:13:22,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:13:22,532 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 07:13:22,532 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:13:22,570 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:13:22,570 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:13:22,635 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:13:22,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140346578] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:13:22,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:13:22,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-10-13 07:13:22,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293897912] [2024-10-13 07:13:22,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:13:22,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 07:13:22,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:13:22,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 07:13:22,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-10-13 07:13:22,648 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 22 [2024-10-13 07:13:22,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 1952 transitions, 58546 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:13:22,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:13:22,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 22 [2024-10-13 07:13:22,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand