./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/bench-exp2x3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/bench-exp2x3.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 f25d9c7e70f7f3d19e85c7cfc6427443102f5451f704dd6a19dd9a78d021a612 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 10:25:48,577 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 10:25:48,642 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-10 10:25:48,646 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 10:25:48,647 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 10:25:48,670 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 10:25:48,671 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 10:25:48,671 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 10:25:48,672 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 10:25:48,673 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 10:25:48,673 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 10:25:48,674 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 10:25:48,674 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 10:25:48,675 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 10:25:48,676 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 10:25:48,676 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 10:25:48,676 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 10:25:48,676 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 10:25:48,677 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 10:25:48,677 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 10:25:48,677 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 10:25:48,680 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 10:25:48,680 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 10:25:48,680 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 10:25:48,680 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 10:25:48,680 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 10:25:48,681 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 10:25:48,681 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 10:25:48,681 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 10:25:48,681 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 10:25:48,681 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 10:25:48,681 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 10:25:48,682 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:25:48,682 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 10:25:48,682 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 10:25:48,682 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 10:25:48,682 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 10:25:48,682 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 10:25:48,682 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 10:25:48,682 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 10:25:48,683 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 10:25:48,683 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 10:25:48,683 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f25d9c7e70f7f3d19e85c7cfc6427443102f5451f704dd6a19dd9a78d021a612 [2024-11-10 10:25:48,892 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 10:25:48,915 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 10:25:48,918 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 10:25:48,919 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 10:25:48,919 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 10:25:48,920 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/bench-exp2x3.wvr.c [2024-11-10 10:25:50,239 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 10:25:50,403 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 10:25:50,403 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp2x3.wvr.c [2024-11-10 10:25:50,411 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8826903b0/e2ad7c2c16dc4b8a85ada361c5f3c62c/FLAG029add200 [2024-11-10 10:25:50,424 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8826903b0/e2ad7c2c16dc4b8a85ada361c5f3c62c [2024-11-10 10:25:50,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 10:25:50,428 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 10:25:50,429 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 10:25:50,429 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 10:25:50,436 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 10:25:50,436 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:25:50" (1/1) ... [2024-11-10 10:25:50,437 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@594b83a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:50, skipping insertion in model container [2024-11-10 10:25:50,437 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:25:50" (1/1) ... [2024-11-10 10:25:50,462 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 10:25:50,645 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp2x3.wvr.c[2289,2302] [2024-11-10 10:25:50,650 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:25:50,659 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 10:25:50,684 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp2x3.wvr.c[2289,2302] [2024-11-10 10:25:50,685 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:25:50,701 INFO L204 MainTranslator]: Completed translation [2024-11-10 10:25:50,702 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:50 WrapperNode [2024-11-10 10:25:50,702 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 10:25:50,703 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 10:25:50,704 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 10:25:50,704 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 10:25:50,710 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:50" (1/1) ... [2024-11-10 10:25:50,717 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:50" (1/1) ... [2024-11-10 10:25:50,735 INFO L138 Inliner]: procedures = 19, calls = 12, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2024-11-10 10:25:50,736 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 10:25:50,737 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 10:25:50,737 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 10:25:50,737 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 10:25:50,745 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:50" (1/1) ... [2024-11-10 10:25:50,745 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:50" (1/1) ... [2024-11-10 10:25:50,747 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:50" (1/1) ... [2024-11-10 10:25:50,764 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-10 10:25:50,764 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:50" (1/1) ... [2024-11-10 10:25:50,765 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:50" (1/1) ... [2024-11-10 10:25:50,768 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:50" (1/1) ... [2024-11-10 10:25:50,768 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:50" (1/1) ... [2024-11-10 10:25:50,773 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:50" (1/1) ... [2024-11-10 10:25:50,774 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:50" (1/1) ... [2024-11-10 10:25:50,775 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 10:25:50,776 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 10:25:50,776 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 10:25:50,776 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 10:25:50,781 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:50" (1/1) ... [2024-11-10 10:25:50,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:25:50,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:25:50,818 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-10 10:25:50,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-10 10:25:50,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 10:25:50,865 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 10:25:50,865 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 10:25:50,865 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 10:25:50,866 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 10:25:50,866 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-10 10:25:50,866 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-10 10:25:50,866 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-10 10:25:50,866 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-10 10:25:50,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 10:25:50,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 10:25:50,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 10:25:50,868 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 10:25:50,948 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 10:25:50,950 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 10:25:51,115 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 10:25:51,115 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 10:25:51,218 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 10:25:51,218 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 10:25:51,219 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:25:51 BoogieIcfgContainer [2024-11-10 10:25:51,219 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 10:25:51,221 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 10:25:51,221 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 10:25:51,227 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 10:25:51,228 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:25:50" (1/3) ... [2024-11-10 10:25:51,228 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bead64d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:25:51, skipping insertion in model container [2024-11-10 10:25:51,228 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:50" (2/3) ... [2024-11-10 10:25:51,228 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bead64d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:25:51, skipping insertion in model container [2024-11-10 10:25:51,229 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:25:51" (3/3) ... [2024-11-10 10:25:51,230 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp2x3.wvr.c [2024-11-10 10:25:51,245 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 10:25:51,246 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-10 10:25:51,246 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 10:25:51,285 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-10 10:25:51,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 44 transitions, 116 flow [2024-11-10 10:25:51,347 INFO L124 PetriNetUnfolderBase]: 8/40 cut-off events. [2024-11-10 10:25:51,348 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-10 10:25:51,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 40 events. 8/40 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 50 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2024-11-10 10:25:51,354 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 44 transitions, 116 flow [2024-11-10 10:25:51,357 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 39 transitions, 102 flow [2024-11-10 10:25:51,371 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:25:51,378 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;@23543e06, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:25:51,378 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-10 10:25:51,400 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:25:51,401 INFO L124 PetriNetUnfolderBase]: 8/38 cut-off events. [2024-11-10 10:25:51,401 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-10 10:25:51,401 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:25:51,402 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:25:51,402 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 10:25:51,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:25:51,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1928198632, now seen corresponding path program 1 times [2024-11-10 10:25:51,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:25:51,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230879089] [2024-11-10 10:25:51,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:25:51,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:25:51,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:25:51,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:25:51,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:25:51,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230879089] [2024-11-10 10:25:51,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230879089] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:25:51,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:25:51,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:25:51,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250264114] [2024-11-10 10:25:51,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:25:51,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 10:25:51,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:25:51,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 10:25:51,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 10:25:51,664 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 44 [2024-11-10 10:25:51,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 102 flow. Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:25:51,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:25:51,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 44 [2024-11-10 10:25:51,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:25:51,926 INFO L124 PetriNetUnfolderBase]: 976/1419 cut-off events. [2024-11-10 10:25:51,926 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2024-11-10 10:25:51,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2763 conditions, 1419 events. 976/1419 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 6507 event pairs, 448 based on Foata normal form. 498/1769 useless extension candidates. Maximal degree in co-relation 2356. Up to 1219 conditions per place. [2024-11-10 10:25:51,944 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 22 selfloop transitions, 0 changer transitions 0/35 dead transitions. [2024-11-10 10:25:51,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 35 transitions, 138 flow [2024-11-10 10:25:51,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 10:25:51,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 10:25:51,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 60 transitions. [2024-11-10 10:25:51,954 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6818181818181818 [2024-11-10 10:25:51,956 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 102 flow. Second operand 2 states and 60 transitions. [2024-11-10 10:25:51,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 35 transitions, 138 flow [2024-11-10 10:25:51,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 35 transitions, 122 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-10 10:25:51,963 INFO L231 Difference]: Finished difference. Result has 37 places, 35 transitions, 78 flow [2024-11-10 10:25:51,965 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=78, PETRI_PLACES=37, PETRI_TRANSITIONS=35} [2024-11-10 10:25:51,970 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, -7 predicate places. [2024-11-10 10:25:51,970 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 35 transitions, 78 flow [2024-11-10 10:25:51,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:25:51,971 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:25:51,971 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:25:51,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 10:25:51,972 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 10:25:51,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:25:51,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1652416308, now seen corresponding path program 1 times [2024-11-10 10:25:51,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:25:51,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146135576] [2024-11-10 10:25:51,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:25:51,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:25:52,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:25:52,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:25:52,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:25:52,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146135576] [2024-11-10 10:25:52,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146135576] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:25:52,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:25:52,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:25:52,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484751430] [2024-11-10 10:25:52,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:25:52,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 10:25:52,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:25:52,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 10:25:52,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 10:25:52,304 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 44 [2024-11-10 10:25:52,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 35 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:25:52,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:25:52,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 44 [2024-11-10 10:25:52,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:25:52,475 INFO L124 PetriNetUnfolderBase]: 1367/2172 cut-off events. [2024-11-10 10:25:52,475 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-11-10 10:25:52,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3942 conditions, 2172 events. 1367/2172 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 11466 event pairs, 123 based on Foata normal form. 1/2116 useless extension candidates. Maximal degree in co-relation 3939. Up to 1541 conditions per place. [2024-11-10 10:25:52,491 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 35 selfloop transitions, 5 changer transitions 1/54 dead transitions. [2024-11-10 10:25:52,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 54 transitions, 205 flow [2024-11-10 10:25:52,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 10:25:52,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 10:25:52,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2024-11-10 10:25:52,493 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7045454545454546 [2024-11-10 10:25:52,493 INFO L175 Difference]: Start difference. First operand has 37 places, 35 transitions, 78 flow. Second operand 3 states and 93 transitions. [2024-11-10 10:25:52,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 54 transitions, 205 flow [2024-11-10 10:25:52,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 54 transitions, 205 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 10:25:52,497 INFO L231 Difference]: Finished difference. Result has 40 places, 39 transitions, 111 flow [2024-11-10 10:25:52,497 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=111, PETRI_PLACES=40, PETRI_TRANSITIONS=39} [2024-11-10 10:25:52,498 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, -4 predicate places. [2024-11-10 10:25:52,498 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 39 transitions, 111 flow [2024-11-10 10:25:52,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:25:52,498 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:25:52,499 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:25:52,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 10:25:52,499 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 10:25:52,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:25:52,501 INFO L85 PathProgramCache]: Analyzing trace with hash 597388087, now seen corresponding path program 1 times [2024-11-10 10:25:52,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:25:52,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861057089] [2024-11-10 10:25:52,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:25:52,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:25:52,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:25:52,656 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:25:52,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:25:52,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861057089] [2024-11-10 10:25:52,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861057089] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:25:52,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:25:52,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 10:25:52,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140855768] [2024-11-10 10:25:52,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:25:52,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 10:25:52,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:25:52,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 10:25:52,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 10:25:52,667 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 44 [2024-11-10 10:25:52,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 39 transitions, 111 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:25:52,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:25:52,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 44 [2024-11-10 10:25:52,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:25:52,998 INFO L124 PetriNetUnfolderBase]: 2975/4088 cut-off events. [2024-11-10 10:25:52,999 INFO L125 PetriNetUnfolderBase]: For 1164/1164 co-relation queries the response was YES. [2024-11-10 10:25:53,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9521 conditions, 4088 events. 2975/4088 cut-off events. For 1164/1164 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 20130 event pairs, 205 based on Foata normal form. 68/4106 useless extension candidates. Maximal degree in co-relation 9516. Up to 1437 conditions per place. [2024-11-10 10:25:53,024 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 71 selfloop transitions, 10 changer transitions 0/92 dead transitions. [2024-11-10 10:25:53,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 92 transitions, 423 flow [2024-11-10 10:25:53,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 10:25:53,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 10:25:53,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 150 transitions. [2024-11-10 10:25:53,027 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6818181818181818 [2024-11-10 10:25:53,028 INFO L175 Difference]: Start difference. First operand has 40 places, 39 transitions, 111 flow. Second operand 5 states and 150 transitions. [2024-11-10 10:25:53,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 92 transitions, 423 flow [2024-11-10 10:25:53,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 92 transitions, 415 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 10:25:53,031 INFO L231 Difference]: Finished difference. Result has 45 places, 46 transitions, 171 flow [2024-11-10 10:25:53,031 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=171, PETRI_PLACES=45, PETRI_TRANSITIONS=46} [2024-11-10 10:25:53,033 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 1 predicate places. [2024-11-10 10:25:53,033 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 46 transitions, 171 flow [2024-11-10 10:25:53,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:25:53,033 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:25:53,034 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:25:53,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 10:25:53,034 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 10:25:53,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:25:53,035 INFO L85 PathProgramCache]: Analyzing trace with hash -139063011, now seen corresponding path program 2 times [2024-11-10 10:25:53,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:25:53,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46579844] [2024-11-10 10:25:53,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:25:53,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:25:53,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:25:53,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:25:53,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:25:53,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46579844] [2024-11-10 10:25:53,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46579844] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:25:53,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559143644] [2024-11-10 10:25:53,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 10:25:53,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:25:53,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:25:53,126 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:25:53,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 10:25:53,189 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 10:25:53,190 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:25:53,191 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-10 10:25:53,195 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:25:53,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:25:53,397 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:25:53,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:25:53,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559143644] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:25:53,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:25:53,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-11-10 10:25:53,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541249957] [2024-11-10 10:25:53,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:25:53,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 10:25:53,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:25:53,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 10:25:53,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-10 10:25:53,520 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 44 [2024-11-10 10:25:53,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 46 transitions, 171 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:25:53,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:25:53,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 44 [2024-11-10 10:25:53,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:25:53,871 INFO L124 PetriNetUnfolderBase]: 2838/4075 cut-off events. [2024-11-10 10:25:53,871 INFO L125 PetriNetUnfolderBase]: For 3421/3421 co-relation queries the response was YES. [2024-11-10 10:25:53,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10799 conditions, 4075 events. 2838/4075 cut-off events. For 3421/3421 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 21751 event pairs, 678 based on Foata normal form. 87/3931 useless extension candidates. Maximal degree in co-relation 10792. Up to 1942 conditions per place. [2024-11-10 10:25:53,897 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 70 selfloop transitions, 10 changer transitions 0/91 dead transitions. [2024-11-10 10:25:53,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 91 transitions, 470 flow [2024-11-10 10:25:53,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 10:25:53,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 10:25:53,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 149 transitions. [2024-11-10 10:25:53,899 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6772727272727272 [2024-11-10 10:25:53,899 INFO L175 Difference]: Start difference. First operand has 45 places, 46 transitions, 171 flow. Second operand 5 states and 149 transitions. [2024-11-10 10:25:53,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 91 transitions, 470 flow [2024-11-10 10:25:53,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 91 transitions, 470 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 10:25:53,902 INFO L231 Difference]: Finished difference. Result has 51 places, 49 transitions, 225 flow [2024-11-10 10:25:53,903 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=225, PETRI_PLACES=51, PETRI_TRANSITIONS=49} [2024-11-10 10:25:53,903 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 7 predicate places. [2024-11-10 10:25:53,903 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 49 transitions, 225 flow [2024-11-10 10:25:53,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:25:53,904 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:25:53,904 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:25:53,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-10 10:25:54,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:25:54,109 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 10:25:54,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:25:54,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1640611059, now seen corresponding path program 1 times [2024-11-10 10:25:54,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:25:54,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818003832] [2024-11-10 10:25:54,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:25:54,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:25:54,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:25:54,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:25:54,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:25:54,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818003832] [2024-11-10 10:25:54,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818003832] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:25:54,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:25:54,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 10:25:54,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397883773] [2024-11-10 10:25:54,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:25:54,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 10:25:54,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:25:54,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 10:25:54,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 10:25:54,189 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 44 [2024-11-10 10:25:54,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 49 transitions, 225 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:25:54,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:25:54,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 44 [2024-11-10 10:25:54,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:25:54,542 INFO L124 PetriNetUnfolderBase]: 2808/3822 cut-off events. [2024-11-10 10:25:54,542 INFO L125 PetriNetUnfolderBase]: For 5980/5980 co-relation queries the response was YES. [2024-11-10 10:25:54,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11274 conditions, 3822 events. 2808/3822 cut-off events. For 5980/5980 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 18111 event pairs, 494 based on Foata normal form. 80/3862 useless extension candidates. Maximal degree in co-relation 11264. Up to 1298 conditions per place. [2024-11-10 10:25:54,568 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 73 selfloop transitions, 8 changer transitions 0/92 dead transitions. [2024-11-10 10:25:54,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 92 transitions, 506 flow [2024-11-10 10:25:54,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 10:25:54,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 10:25:54,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 148 transitions. [2024-11-10 10:25:54,570 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6727272727272727 [2024-11-10 10:25:54,570 INFO L175 Difference]: Start difference. First operand has 51 places, 49 transitions, 225 flow. Second operand 5 states and 148 transitions. [2024-11-10 10:25:54,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 92 transitions, 506 flow [2024-11-10 10:25:54,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 92 transitions, 497 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-10 10:25:54,576 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 230 flow [2024-11-10 10:25:54,576 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=230, PETRI_PLACES=55, PETRI_TRANSITIONS=48} [2024-11-10 10:25:54,577 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 11 predicate places. [2024-11-10 10:25:54,577 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 230 flow [2024-11-10 10:25:54,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:25:54,577 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:25:54,577 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:25:54,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 10:25:54,578 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 10:25:54,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:25:54,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1457230367, now seen corresponding path program 1 times [2024-11-10 10:25:54,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:25:54,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529811467] [2024-11-10 10:25:54,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:25:54,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:25:54,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:25:54,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:25:54,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:25:54,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529811467] [2024-11-10 10:25:54,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529811467] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:25:54,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:25:54,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 10:25:54,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660332138] [2024-11-10 10:25:54,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:25:54,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 10:25:54,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:25:54,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 10:25:54,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 10:25:54,635 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 44 [2024-11-10 10:25:54,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 48 transitions, 230 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:25:54,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:25:54,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 44 [2024-11-10 10:25:54,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:25:55,113 INFO L124 PetriNetUnfolderBase]: 4800/6789 cut-off events. [2024-11-10 10:25:55,113 INFO L125 PetriNetUnfolderBase]: For 10329/10883 co-relation queries the response was YES. [2024-11-10 10:25:55,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19040 conditions, 6789 events. 4800/6789 cut-off events. For 10329/10883 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 40722 event pairs, 914 based on Foata normal form. 177/6450 useless extension candidates. Maximal degree in co-relation 19029. Up to 2547 conditions per place. [2024-11-10 10:25:55,158 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 78 selfloop transitions, 8 changer transitions 0/102 dead transitions. [2024-11-10 10:25:55,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 102 transitions, 658 flow [2024-11-10 10:25:55,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 10:25:55,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 10:25:55,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 145 transitions. [2024-11-10 10:25:55,160 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6590909090909091 [2024-11-10 10:25:55,160 INFO L175 Difference]: Start difference. First operand has 55 places, 48 transitions, 230 flow. Second operand 5 states and 145 transitions. [2024-11-10 10:25:55,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 102 transitions, 658 flow [2024-11-10 10:25:55,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 102 transitions, 645 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-10 10:25:55,168 INFO L231 Difference]: Finished difference. Result has 61 places, 53 transitions, 276 flow [2024-11-10 10:25:55,169 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=276, PETRI_PLACES=61, PETRI_TRANSITIONS=53} [2024-11-10 10:25:55,169 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 17 predicate places. [2024-11-10 10:25:55,169 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 53 transitions, 276 flow [2024-11-10 10:25:55,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:25:55,170 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:25:55,170 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:25:55,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 10:25:55,170 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 10:25:55,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:25:55,170 INFO L85 PathProgramCache]: Analyzing trace with hash 309899199, now seen corresponding path program 2 times [2024-11-10 10:25:55,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:25:55,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062122966] [2024-11-10 10:25:55,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:25:55,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:25:55,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:25:55,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:25:55,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:25:55,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062122966] [2024-11-10 10:25:55,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062122966] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:25:55,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:25:55,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 10:25:55,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834404913] [2024-11-10 10:25:55,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:25:55,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 10:25:55,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:25:55,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 10:25:55,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 10:25:55,262 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 44 [2024-11-10 10:25:55,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 53 transitions, 276 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:25:55,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:25:55,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 44 [2024-11-10 10:25:55,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:25:55,743 INFO L124 PetriNetUnfolderBase]: 4018/5658 cut-off events. [2024-11-10 10:25:55,744 INFO L125 PetriNetUnfolderBase]: For 11371/11817 co-relation queries the response was YES. [2024-11-10 10:25:55,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18247 conditions, 5658 events. 4018/5658 cut-off events. For 11371/11817 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 31966 event pairs, 244 based on Foata normal form. 121/5424 useless extension candidates. Maximal degree in co-relation 18232. Up to 1938 conditions per place. [2024-11-10 10:25:55,788 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 77 selfloop transitions, 11 changer transitions 0/104 dead transitions. [2024-11-10 10:25:55,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 104 transitions, 715 flow [2024-11-10 10:25:55,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 10:25:55,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 10:25:55,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 142 transitions. [2024-11-10 10:25:55,789 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6454545454545455 [2024-11-10 10:25:55,790 INFO L175 Difference]: Start difference. First operand has 61 places, 53 transitions, 276 flow. Second operand 5 states and 142 transitions. [2024-11-10 10:25:55,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 104 transitions, 715 flow [2024-11-10 10:25:55,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 104 transitions, 715 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 10:25:55,800 INFO L231 Difference]: Finished difference. Result has 66 places, 58 transitions, 337 flow [2024-11-10 10:25:55,800 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=337, PETRI_PLACES=66, PETRI_TRANSITIONS=58} [2024-11-10 10:25:55,801 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 22 predicate places. [2024-11-10 10:25:55,801 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 58 transitions, 337 flow [2024-11-10 10:25:55,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:25:55,802 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:25:55,802 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:25:55,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 10:25:55,802 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 10:25:55,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:25:55,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1755924515, now seen corresponding path program 1 times [2024-11-10 10:25:55,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:25:55,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842123337] [2024-11-10 10:25:55,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:25:55,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:25:55,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:25:55,887 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:25:55,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:25:55,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842123337] [2024-11-10 10:25:55,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842123337] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:25:55,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:25:55,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 10:25:55,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681980694] [2024-11-10 10:25:55,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:25:55,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 10:25:55,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:25:55,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 10:25:55,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 10:25:55,899 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 44 [2024-11-10 10:25:55,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 58 transitions, 337 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:25:55,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:25:55,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 44 [2024-11-10 10:25:55,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:25:56,375 INFO L124 PetriNetUnfolderBase]: 3932/5457 cut-off events. [2024-11-10 10:25:56,377 INFO L125 PetriNetUnfolderBase]: For 13293/13739 co-relation queries the response was YES. [2024-11-10 10:25:56,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18845 conditions, 5457 events. 3932/5457 cut-off events. For 13293/13739 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 30285 event pairs, 186 based on Foata normal form. 123/5225 useless extension candidates. Maximal degree in co-relation 18828. Up to 1852 conditions per place. [2024-11-10 10:25:56,413 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 77 selfloop transitions, 8 changer transitions 0/101 dead transitions. [2024-11-10 10:25:56,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 101 transitions, 724 flow [2024-11-10 10:25:56,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 10:25:56,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 10:25:56,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 140 transitions. [2024-11-10 10:25:56,415 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6363636363636364 [2024-11-10 10:25:56,416 INFO L175 Difference]: Start difference. First operand has 66 places, 58 transitions, 337 flow. Second operand 5 states and 140 transitions. [2024-11-10 10:25:56,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 101 transitions, 724 flow [2024-11-10 10:25:56,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 101 transitions, 713 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-10 10:25:56,429 INFO L231 Difference]: Finished difference. Result has 70 places, 57 transitions, 340 flow [2024-11-10 10:25:56,429 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=340, PETRI_PLACES=70, PETRI_TRANSITIONS=57} [2024-11-10 10:25:56,430 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 26 predicate places. [2024-11-10 10:25:56,430 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 57 transitions, 340 flow [2024-11-10 10:25:56,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:25:56,431 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:25:56,431 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:25:56,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 10:25:56,431 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 10:25:56,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:25:56,432 INFO L85 PathProgramCache]: Analyzing trace with hash 102266989, now seen corresponding path program 2 times [2024-11-10 10:25:56,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:25:56,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691680132] [2024-11-10 10:25:56,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:25:56,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:25:56,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:25:56,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:25:56,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:25:56,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691680132] [2024-11-10 10:25:56,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691680132] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:25:56,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:25:56,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 10:25:56,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667641843] [2024-11-10 10:25:56,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:25:56,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 10:25:56,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:25:56,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 10:25:56,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 10:25:56,521 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 44 [2024-11-10 10:25:56,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 57 transitions, 340 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:25:56,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:25:56,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 44 [2024-11-10 10:25:56,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:25:56,888 INFO L124 PetriNetUnfolderBase]: 3806/5447 cut-off events. [2024-11-10 10:25:56,888 INFO L125 PetriNetUnfolderBase]: For 14445/14891 co-relation queries the response was YES. [2024-11-10 10:25:56,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18961 conditions, 5447 events. 3806/5447 cut-off events. For 14445/14891 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 32190 event pairs, 962 based on Foata normal form. 163/5198 useless extension candidates. Maximal degree in co-relation 18943. Up to 2773 conditions per place. [2024-11-10 10:25:56,926 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 76 selfloop transitions, 8 changer transitions 0/100 dead transitions. [2024-11-10 10:25:56,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 100 transitions, 744 flow [2024-11-10 10:25:56,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 10:25:56,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 10:25:56,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 138 transitions. [2024-11-10 10:25:56,928 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6272727272727273 [2024-11-10 10:25:56,928 INFO L175 Difference]: Start difference. First operand has 70 places, 57 transitions, 340 flow. Second operand 5 states and 138 transitions. [2024-11-10 10:25:56,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 100 transitions, 744 flow [2024-11-10 10:25:56,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 100 transitions, 731 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-10 10:25:56,938 INFO L231 Difference]: Finished difference. Result has 75 places, 60 transitions, 380 flow [2024-11-10 10:25:56,939 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=380, PETRI_PLACES=75, PETRI_TRANSITIONS=60} [2024-11-10 10:25:56,939 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 31 predicate places. [2024-11-10 10:25:56,940 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 60 transitions, 380 flow [2024-11-10 10:25:56,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:25:56,940 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:25:56,940 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:25:56,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-10 10:25:56,941 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 10:25:56,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:25:56,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1801438535, now seen corresponding path program 2 times [2024-11-10 10:25:56,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:25:56,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612365153] [2024-11-10 10:25:56,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:25:56,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:25:56,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:25:56,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:25:56,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:25:56,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612365153] [2024-11-10 10:25:56,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612365153] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:25:56,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490698294] [2024-11-10 10:25:56,996 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 10:25:56,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:25:56,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:25:56,997 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:25:56,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 10:25:57,050 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 10:25:57,051 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:25:57,052 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-10 10:25:57,053 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:25:57,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:25:57,127 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:25:57,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:25:57,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490698294] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:25:57,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:25:57,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-11-10 10:25:57,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381625410] [2024-11-10 10:25:57,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:25:57,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 10:25:57,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:25:57,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 10:25:57,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-10 10:25:57,184 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 44 [2024-11-10 10:25:57,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 60 transitions, 380 flow. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:25:57,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:25:57,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 44 [2024-11-10 10:25:57,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:25:57,561 INFO L124 PetriNetUnfolderBase]: 3445/5147 cut-off events. [2024-11-10 10:25:57,561 INFO L125 PetriNetUnfolderBase]: For 14506/14584 co-relation queries the response was YES. [2024-11-10 10:25:57,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18918 conditions, 5147 events. 3445/5147 cut-off events. For 14506/14584 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 30809 event pairs, 1324 based on Foata normal form. 134/4911 useless extension candidates. Maximal degree in co-relation 18897. Up to 2511 conditions per place. [2024-11-10 10:25:57,598 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 92 selfloop transitions, 8 changer transitions 0/117 dead transitions. [2024-11-10 10:25:57,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 117 transitions, 886 flow [2024-11-10 10:25:57,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 10:25:57,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 10:25:57,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 146 transitions. [2024-11-10 10:25:57,600 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6636363636363637 [2024-11-10 10:25:57,600 INFO L175 Difference]: Start difference. First operand has 75 places, 60 transitions, 380 flow. Second operand 5 states and 146 transitions. [2024-11-10 10:25:57,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 117 transitions, 886 flow [2024-11-10 10:25:57,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 117 transitions, 840 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-11-10 10:25:57,614 INFO L231 Difference]: Finished difference. Result has 79 places, 63 transitions, 417 flow [2024-11-10 10:25:57,614 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=417, PETRI_PLACES=79, PETRI_TRANSITIONS=63} [2024-11-10 10:25:57,615 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 35 predicate places. [2024-11-10 10:25:57,615 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 63 transitions, 417 flow [2024-11-10 10:25:57,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:25:57,615 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:25:57,616 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:25:57,629 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 10:25:57,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-10 10:25:57,816 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 10:25:57,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:25:57,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1569374218, now seen corresponding path program 1 times [2024-11-10 10:25:57,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:25:57,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087676938] [2024-11-10 10:25:57,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:25:57,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:25:57,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:25:58,260 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:25:58,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:25:58,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087676938] [2024-11-10 10:25:58,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087676938] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:25:58,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486165458] [2024-11-10 10:25:58,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:25:58,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:25:58,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:25:58,267 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:25:58,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 10:25:58,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:25:58,429 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-10 10:25:58,430 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:27:24,295 WARN L286 SmtUtils]: Spent 12.09s on a formula simplification that was a NOOP. DAG size: 34 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)