./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/test-easy10.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.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/test-easy10.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 24421fae56d27ddfd314bb85e4431c40a1e6738a845aa97472d8668d2b4dde52 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 06:46:43,461 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 06:46:43,516 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-17 06:46:43,519 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 06:46:43,520 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 06:46:43,541 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 06:46:43,542 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 06:46:43,542 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 06:46:43,542 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 06:46:43,543 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 06:46:43,543 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 06:46:43,543 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 06:46:43,544 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 06:46:43,544 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 06:46:43,544 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 06:46:43,544 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 06:46:43,544 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 06:46:43,544 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 06:46:43,544 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 06:46:43,544 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 06:46:43,544 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 06:46:43,544 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 06:46:43,544 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 06:46:43,544 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 06:46:43,545 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 06:46:43,545 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 06:46:43,545 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 06:46:43,545 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 06:46:43,545 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 06:46:43,545 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 06:46:43,545 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 06:46:43,545 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 06:46:43,545 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:46:43,545 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 06:46:43,545 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 06:46:43,546 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 06:46:43,546 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 06:46:43,546 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 06:46:43,546 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 06:46:43,546 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 06:46:43,546 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 06:46:43,546 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 06:46:43,546 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 06:46:43,546 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> 24421fae56d27ddfd314bb85e4431c40a1e6738a845aa97472d8668d2b4dde52 [2025-03-17 06:46:43,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 06:46:43,781 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 06:46:43,782 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 06:46:43,784 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 06:46:43,784 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 06:46:43,786 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test-easy10.wvr.c [2025-03-17 06:46:44,966 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a856a0a7/26e081ef74254f95ae927eb64203f82a/FLAG50ff98bcf [2025-03-17 06:46:45,165 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 06:46:45,167 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy10.wvr.c [2025-03-17 06:46:45,178 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a856a0a7/26e081ef74254f95ae927eb64203f82a/FLAG50ff98bcf [2025-03-17 06:46:45,522 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a856a0a7/26e081ef74254f95ae927eb64203f82a [2025-03-17 06:46:45,524 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 06:46:45,525 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 06:46:45,526 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 06:46:45,526 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 06:46:45,529 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 06:46:45,530 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:46:45" (1/1) ... [2025-03-17 06:46:45,530 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8465807 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:46:45, skipping insertion in model container [2025-03-17 06:46:45,531 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:46:45" (1/1) ... [2025-03-17 06:46:45,541 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 06:46:45,663 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/test-easy10.wvr.c[2547,2560] [2025-03-17 06:46:45,668 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:46:45,676 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 06:46:45,697 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/test-easy10.wvr.c[2547,2560] [2025-03-17 06:46:45,698 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:46:45,709 INFO L204 MainTranslator]: Completed translation [2025-03-17 06:46:45,711 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:46:45 WrapperNode [2025-03-17 06:46:45,711 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 06:46:45,712 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 06:46:45,712 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 06:46:45,712 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 06:46:45,717 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:46:45" (1/1) ... [2025-03-17 06:46:45,722 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:46:45" (1/1) ... [2025-03-17 06:46:45,741 INFO L138 Inliner]: procedures = 20, calls = 16, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 147 [2025-03-17 06:46:45,741 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 06:46:45,743 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 06:46:45,743 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 06:46:45,743 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 06:46:45,750 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:46:45" (1/1) ... [2025-03-17 06:46:45,750 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:46:45" (1/1) ... [2025-03-17 06:46:45,752 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:46:45" (1/1) ... [2025-03-17 06:46:45,768 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]. [2025-03-17 06:46:45,768 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:46:45" (1/1) ... [2025-03-17 06:46:45,768 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:46:45" (1/1) ... [2025-03-17 06:46:45,773 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:46:45" (1/1) ... [2025-03-17 06:46:45,777 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:46:45" (1/1) ... [2025-03-17 06:46:45,778 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:46:45" (1/1) ... [2025-03-17 06:46:45,778 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:46:45" (1/1) ... [2025-03-17 06:46:45,780 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 06:46:45,780 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 06:46:45,780 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 06:46:45,780 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 06:46:45,784 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:46:45" (1/1) ... [2025-03-17 06:46:45,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:46:45,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:46:45,818 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) [2025-03-17 06:46:45,823 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 [2025-03-17 06:46:45,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 06:46:45,846 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-17 06:46:45,846 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-17 06:46:45,846 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-17 06:46:45,846 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-17 06:46:45,846 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-17 06:46:45,846 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-17 06:46:45,846 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-03-17 06:46:45,846 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-03-17 06:46:45,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 06:46:45,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 06:46:45,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 06:46:45,849 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 06:46:45,917 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 06:46:45,918 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 06:46:46,171 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 06:46:46,171 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 06:46:46,300 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 06:46:46,300 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 06:46:46,303 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:46:46 BoogieIcfgContainer [2025-03-17 06:46:46,303 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 06:46:46,304 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 06:46:46,304 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 06:46:46,310 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 06:46:46,311 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 06:46:45" (1/3) ... [2025-03-17 06:46:46,311 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c290b36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:46:46, skipping insertion in model container [2025-03-17 06:46:46,311 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:46:45" (2/3) ... [2025-03-17 06:46:46,311 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c290b36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:46:46, skipping insertion in model container [2025-03-17 06:46:46,311 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:46:46" (3/3) ... [2025-03-17 06:46:46,312 INFO L128 eAbstractionObserver]: Analyzing ICFG test-easy10.wvr.c [2025-03-17 06:46:46,326 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 06:46:46,328 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG test-easy10.wvr.c that has 5 procedures, 61 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-03-17 06:46:46,328 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 06:46:46,392 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-03-17 06:46:46,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 60 transitions, 148 flow [2025-03-17 06:46:46,457 INFO L124 PetriNetUnfolderBase]: 0/56 cut-off events. [2025-03-17 06:46:46,458 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-17 06:46:46,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 56 events. 0/56 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 104 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2025-03-17 06:46:46,461 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 60 transitions, 148 flow [2025-03-17 06:46:46,464 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 55 transitions, 134 flow [2025-03-17 06:46:46,473 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 06:46:46,483 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;@2251e288, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 06:46:46,484 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-03-17 06:46:46,504 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 06:46:46,504 INFO L124 PetriNetUnfolderBase]: 0/54 cut-off events. [2025-03-17 06:46:46,504 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-17 06:46:46,505 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:46:46,505 INFO L206 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:46:46,505 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)] === [2025-03-17 06:46:46,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:46:46,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1902726045, now seen corresponding path program 1 times [2025-03-17 06:46:46,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:46:46,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967690744] [2025-03-17 06:46:46,520 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:46:46,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:46:46,579 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-03-17 06:46:46,635 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-03-17 06:46:46,636 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:46:46,636 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:47,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:46:47,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:46:47,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967690744] [2025-03-17 06:46:47,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967690744] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:46:47,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:46:47,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 06:46:47,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586754873] [2025-03-17 06:46:47,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:46:47,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 06:46:47,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:46:47,041 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 06:46:47,042 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 06:46:47,043 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 60 [2025-03-17 06:46:47,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 55 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2025-03-17 06:46:47,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:46:47,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 60 [2025-03-17 06:46:47,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:46:49,105 INFO L124 PetriNetUnfolderBase]: 22838/30877 cut-off events. [2025-03-17 06:46:49,107 INFO L125 PetriNetUnfolderBase]: For 833/833 co-relation queries the response was YES. [2025-03-17 06:46:49,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63063 conditions, 30877 events. 22838/30877 cut-off events. For 833/833 co-relation queries the response was YES. Maximal size of possible extension queue 772. Compared 170941 event pairs, 7169 based on Foata normal form. 440/31300 useless extension candidates. Maximal degree in co-relation 59983. Up to 24496 conditions per place. [2025-03-17 06:46:49,276 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 70 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2025-03-17 06:46:49,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 77 transitions, 328 flow [2025-03-17 06:46:49,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 06:46:49,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 06:46:49,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 100 transitions. [2025-03-17 06:46:49,287 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2025-03-17 06:46:49,289 INFO L175 Difference]: Start difference. First operand has 68 places, 55 transitions, 134 flow. Second operand 3 states and 100 transitions. [2025-03-17 06:46:49,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 77 transitions, 328 flow [2025-03-17 06:46:49,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 77 transitions, 308 flow, removed 0 selfloop flow, removed 8 redundant places. [2025-03-17 06:46:49,320 INFO L231 Difference]: Finished difference. Result has 63 places, 55 transitions, 126 flow [2025-03-17 06:46:49,323 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=63, PETRI_TRANSITIONS=55} [2025-03-17 06:46:49,327 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, -5 predicate places. [2025-03-17 06:46:49,327 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 55 transitions, 126 flow [2025-03-17 06:46:49,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2025-03-17 06:46:49,328 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:46:49,328 INFO L206 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:46:49,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 06:46:49,330 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)] === [2025-03-17 06:46:49,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:46:49,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1387589329, now seen corresponding path program 2 times [2025-03-17 06:46:49,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:46:49,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135712774] [2025-03-17 06:46:49,332 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 06:46:49,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:46:49,347 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 55 statements into 1 equivalence classes. [2025-03-17 06:46:49,365 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-03-17 06:46:49,366 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 06:46:49,366 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:49,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:46:49,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:46:49,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135712774] [2025-03-17 06:46:49,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135712774] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:46:49,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:46:49,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 06:46:49,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394311129] [2025-03-17 06:46:49,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:46:49,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 06:46:49,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:46:49,510 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 06:46:49,510 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 06:46:49,510 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 60 [2025-03-17 06:46:49,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 55 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2025-03-17 06:46:49,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:46:49,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 60 [2025-03-17 06:46:49,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:46:50,800 INFO L124 PetriNetUnfolderBase]: 17539/23847 cut-off events. [2025-03-17 06:46:50,801 INFO L125 PetriNetUnfolderBase]: For 1244/1244 co-relation queries the response was YES. [2025-03-17 06:46:50,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49402 conditions, 23847 events. 17539/23847 cut-off events. For 1244/1244 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 123786 event pairs, 6369 based on Foata normal form. 434/24252 useless extension candidates. Maximal degree in co-relation 19340. Up to 17342 conditions per place. [2025-03-17 06:46:50,897 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 68 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2025-03-17 06:46:50,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 75 transitions, 313 flow [2025-03-17 06:46:50,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 06:46:50,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 06:46:50,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2025-03-17 06:46:50,901 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5444444444444444 [2025-03-17 06:46:50,901 INFO L175 Difference]: Start difference. First operand has 63 places, 55 transitions, 126 flow. Second operand 3 states and 98 transitions. [2025-03-17 06:46:50,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 75 transitions, 313 flow [2025-03-17 06:46:50,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 75 transitions, 307 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 06:46:50,906 INFO L231 Difference]: Finished difference. Result has 64 places, 55 transitions, 130 flow [2025-03-17 06:46:50,906 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=64, PETRI_TRANSITIONS=55} [2025-03-17 06:46:50,907 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, -4 predicate places. [2025-03-17 06:46:50,907 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 55 transitions, 130 flow [2025-03-17 06:46:50,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2025-03-17 06:46:50,907 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:46:50,907 INFO L206 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:46:50,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 06:46:50,908 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)] === [2025-03-17 06:46:50,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:46:50,909 INFO L85 PathProgramCache]: Analyzing trace with hash 104181345, now seen corresponding path program 3 times [2025-03-17 06:46:50,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:46:50,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552726328] [2025-03-17 06:46:50,910 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 06:46:50,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:46:50,927 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 55 statements into 1 equivalence classes. [2025-03-17 06:46:51,043 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-03-17 06:46:51,044 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-17 06:46:51,044 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:52,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:46:52,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:46:52,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552726328] [2025-03-17 06:46:52,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552726328] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:46:52,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:46:52,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-03-17 06:46:52,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004599066] [2025-03-17 06:46:52,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:46:52,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-17 06:46:52,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:46:52,886 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-17 06:46:52,886 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2025-03-17 06:46:52,887 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 60 [2025-03-17 06:46:52,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 55 transitions, 130 flow. Second operand has 14 states, 14 states have (on average 12.571428571428571) internal successors, (176), 14 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:46:52,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:46:52,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 60 [2025-03-17 06:46:52,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:46:56,306 INFO L124 PetriNetUnfolderBase]: 40518/55563 cut-off events. [2025-03-17 06:46:56,309 INFO L125 PetriNetUnfolderBase]: For 4089/4089 co-relation queries the response was YES. [2025-03-17 06:46:56,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117773 conditions, 55563 events. 40518/55563 cut-off events. For 4089/4089 co-relation queries the response was YES. Maximal size of possible extension queue 1187. Compared 333595 event pairs, 5199 based on Foata normal form. 1/55550 useless extension candidates. Maximal degree in co-relation 25344. Up to 14408 conditions per place. [2025-03-17 06:46:56,546 INFO L140 encePairwiseOnDemand]: 45/60 looper letters, 251 selfloop transitions, 16 changer transitions 19/291 dead transitions. [2025-03-17 06:46:56,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 291 transitions, 1269 flow [2025-03-17 06:46:56,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-17 06:46:56,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-17 06:46:56,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 422 transitions. [2025-03-17 06:46:56,549 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4688888888888889 [2025-03-17 06:46:56,549 INFO L175 Difference]: Start difference. First operand has 64 places, 55 transitions, 130 flow. Second operand 15 states and 422 transitions. [2025-03-17 06:46:56,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 291 transitions, 1269 flow [2025-03-17 06:46:56,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 291 transitions, 1249 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 06:46:56,587 INFO L231 Difference]: Finished difference. Result has 89 places, 69 transitions, 250 flow [2025-03-17 06:46:56,588 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=250, PETRI_PLACES=89, PETRI_TRANSITIONS=69} [2025-03-17 06:46:56,588 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, 21 predicate places. [2025-03-17 06:46:56,589 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 69 transitions, 250 flow [2025-03-17 06:46:56,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.571428571428571) internal successors, (176), 14 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:46:56,589 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:46:56,589 INFO L206 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:46:56,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 06:46:56,590 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)] === [2025-03-17 06:46:56,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:46:56,590 INFO L85 PathProgramCache]: Analyzing trace with hash 94665069, now seen corresponding path program 4 times [2025-03-17 06:46:56,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:46:56,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424802986] [2025-03-17 06:46:56,590 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 06:46:56,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:46:56,602 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 55 statements into 2 equivalence classes. [2025-03-17 06:46:56,611 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 55 of 55 statements. [2025-03-17 06:46:56,611 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 06:46:56,611 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:56,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:46:56,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:46:56,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424802986] [2025-03-17 06:46:56,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424802986] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:46:56,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:46:56,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 06:46:56,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234624564] [2025-03-17 06:46:56,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:46:56,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 06:46:56,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:46:56,694 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 06:46:56,694 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 06:46:56,694 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 60 [2025-03-17 06:46:56,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 69 transitions, 250 flow. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2025-03-17 06:46:56,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:46:56,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 60 [2025-03-17 06:46:56,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:46:58,920 INFO L124 PetriNetUnfolderBase]: 32602/45048 cut-off events. [2025-03-17 06:46:58,920 INFO L125 PetriNetUnfolderBase]: For 29821/29821 co-relation queries the response was YES. [2025-03-17 06:46:59,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120816 conditions, 45048 events. 32602/45048 cut-off events. For 29821/29821 co-relation queries the response was YES. Maximal size of possible extension queue 956. Compared 265219 event pairs, 12735 based on Foata normal form. 540/45573 useless extension candidates. Maximal degree in co-relation 120775. Up to 39090 conditions per place. [2025-03-17 06:46:59,273 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 86 selfloop transitions, 2 changer transitions 0/93 dead transitions. [2025-03-17 06:46:59,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 93 transitions, 503 flow [2025-03-17 06:46:59,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 06:46:59,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 06:46:59,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2025-03-17 06:46:59,275 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2025-03-17 06:46:59,275 INFO L175 Difference]: Start difference. First operand has 89 places, 69 transitions, 250 flow. Second operand 3 states and 102 transitions. [2025-03-17 06:46:59,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 93 transitions, 503 flow [2025-03-17 06:46:59,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 93 transitions, 487 flow, removed 4 selfloop flow, removed 5 redundant places. [2025-03-17 06:46:59,859 INFO L231 Difference]: Finished difference. Result has 85 places, 67 transitions, 234 flow [2025-03-17 06:46:59,860 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=85, PETRI_TRANSITIONS=67} [2025-03-17 06:46:59,860 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, 17 predicate places. [2025-03-17 06:46:59,860 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 67 transitions, 234 flow [2025-03-17 06:46:59,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2025-03-17 06:46:59,860 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:46:59,860 INFO L206 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:46:59,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 06:46:59,861 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)] === [2025-03-17 06:46:59,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:46:59,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1761003789, now seen corresponding path program 5 times [2025-03-17 06:46:59,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:46:59,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166902548] [2025-03-17 06:46:59,862 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 06:46:59,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:46:59,867 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 55 statements into 1 equivalence classes. [2025-03-17 06:46:59,912 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-03-17 06:46:59,914 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 06:46:59,914 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:01,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:01,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:47:01,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166902548] [2025-03-17 06:47:01,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166902548] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:47:01,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:47:01,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-03-17 06:47:01,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311944804] [2025-03-17 06:47:01,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:47:01,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-17 06:47:01,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:47:01,131 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-17 06:47:01,131 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2025-03-17 06:47:01,133 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 60 [2025-03-17 06:47:01,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 67 transitions, 234 flow. Second operand has 14 states, 14 states have (on average 12.571428571428571) internal successors, (176), 14 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:47:01,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:47:01,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 60 [2025-03-17 06:47:01,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:47:06,710 INFO L124 PetriNetUnfolderBase]: 60054/84048 cut-off events. [2025-03-17 06:47:06,710 INFO L125 PetriNetUnfolderBase]: For 49151/49151 co-relation queries the response was YES. [2025-03-17 06:47:06,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221308 conditions, 84048 events. 60054/84048 cut-off events. For 49151/49151 co-relation queries the response was YES. Maximal size of possible extension queue 1903. Compared 545361 event pairs, 9538 based on Foata normal form. 1/84040 useless extension candidates. Maximal degree in co-relation 169960. Up to 24934 conditions per place. [2025-03-17 06:47:07,125 INFO L140 encePairwiseOnDemand]: 44/60 looper letters, 291 selfloop transitions, 26 changer transitions 10/332 dead transitions. [2025-03-17 06:47:07,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 332 transitions, 1832 flow [2025-03-17 06:47:07,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-17 06:47:07,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-17 06:47:07,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 416 transitions. [2025-03-17 06:47:07,127 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4622222222222222 [2025-03-17 06:47:07,127 INFO L175 Difference]: Start difference. First operand has 85 places, 67 transitions, 234 flow. Second operand 15 states and 416 transitions. [2025-03-17 06:47:07,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 332 transitions, 1832 flow [2025-03-17 06:47:07,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 332 transitions, 1812 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 06:47:07,953 INFO L231 Difference]: Finished difference. Result has 109 places, 87 transitions, 472 flow [2025-03-17 06:47:07,953 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=472, PETRI_PLACES=109, PETRI_TRANSITIONS=87} [2025-03-17 06:47:07,954 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, 41 predicate places. [2025-03-17 06:47:07,954 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 87 transitions, 472 flow [2025-03-17 06:47:07,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.571428571428571) internal successors, (176), 14 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:47:07,954 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:47:07,954 INFO L206 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:47:07,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 06:47:07,954 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)] === [2025-03-17 06:47:07,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:47:07,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1728564419, now seen corresponding path program 6 times [2025-03-17 06:47:07,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:47:07,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918002709] [2025-03-17 06:47:07,955 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 06:47:07,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:47:07,960 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 55 statements into 1 equivalence classes. [2025-03-17 06:47:07,990 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-03-17 06:47:07,991 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-17 06:47:07,991 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:08,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:08,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:47:08,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918002709] [2025-03-17 06:47:08,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918002709] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:47:08,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:47:08,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-03-17 06:47:08,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537189281] [2025-03-17 06:47:08,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:47:08,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-17 06:47:08,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:47:08,905 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-17 06:47:08,905 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2025-03-17 06:47:08,905 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 60 [2025-03-17 06:47:08,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 87 transitions, 472 flow. Second operand has 14 states, 14 states have (on average 12.571428571428571) internal successors, (176), 14 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:47:08,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:47:08,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 60 [2025-03-17 06:47:08,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:47:17,286 INFO L124 PetriNetUnfolderBase]: 88758/125054 cut-off events. [2025-03-17 06:47:17,286 INFO L125 PetriNetUnfolderBase]: For 189861/189861 co-relation queries the response was YES. [2025-03-17 06:47:17,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 380482 conditions, 125054 events. 88758/125054 cut-off events. For 189861/189861 co-relation queries the response was YES. Maximal size of possible extension queue 2792. Compared 861963 event pairs, 14260 based on Foata normal form. 1/125045 useless extension candidates. Maximal degree in co-relation 380186. Up to 36303 conditions per place. [2025-03-17 06:47:18,123 INFO L140 encePairwiseOnDemand]: 45/60 looper letters, 316 selfloop transitions, 46 changer transitions 10/377 dead transitions. [2025-03-17 06:47:18,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 377 transitions, 2595 flow [2025-03-17 06:47:18,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-17 06:47:18,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-17 06:47:18,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 418 transitions. [2025-03-17 06:47:18,125 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46444444444444444 [2025-03-17 06:47:18,125 INFO L175 Difference]: Start difference. First operand has 109 places, 87 transitions, 472 flow. Second operand 15 states and 418 transitions. [2025-03-17 06:47:18,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 377 transitions, 2595 flow [2025-03-17 06:47:21,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 377 transitions, 2561 flow, removed 11 selfloop flow, removed 3 redundant places. [2025-03-17 06:47:21,627 INFO L231 Difference]: Finished difference. Result has 131 places, 117 transitions, 946 flow [2025-03-17 06:47:21,627 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=946, PETRI_PLACES=131, PETRI_TRANSITIONS=117} [2025-03-17 06:47:21,627 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, 63 predicate places. [2025-03-17 06:47:21,627 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 117 transitions, 946 flow [2025-03-17 06:47:21,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.571428571428571) internal successors, (176), 14 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:47:21,628 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:47:21,628 INFO L206 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:47:21,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 06:47:21,628 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)] === [2025-03-17 06:47:21,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:47:21,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1877753779, now seen corresponding path program 7 times [2025-03-17 06:47:21,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:47:21,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52594944] [2025-03-17 06:47:21,629 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-17 06:47:21,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:47:21,633 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-03-17 06:47:21,660 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-03-17 06:47:21,660 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:47:21,660 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:22,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:22,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:47:22,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52594944] [2025-03-17 06:47:22,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52594944] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:47:22,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:47:22,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-03-17 06:47:22,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359014112] [2025-03-17 06:47:22,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:47:22,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-17 06:47:22,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:47:22,757 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-17 06:47:22,757 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2025-03-17 06:47:22,758 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 60 [2025-03-17 06:47:22,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 117 transitions, 946 flow. Second operand has 14 states, 14 states have (on average 12.571428571428571) internal successors, (176), 14 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:47:22,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:47:22,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 60 [2025-03-17 06:47:22,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:47:35,162 INFO L124 PetriNetUnfolderBase]: 118955/168827 cut-off events. [2025-03-17 06:47:35,166 INFO L125 PetriNetUnfolderBase]: For 478887/478887 co-relation queries the response was YES. [2025-03-17 06:47:36,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 575967 conditions, 168827 events. 118955/168827 cut-off events. For 478887/478887 co-relation queries the response was YES. Maximal size of possible extension queue 3943. Compared 1222026 event pairs, 25845 based on Foata normal form. 1/168825 useless extension candidates. Maximal degree in co-relation 575448. Up to 47568 conditions per place. [2025-03-17 06:47:36,492 INFO L140 encePairwiseOnDemand]: 44/60 looper letters, 342 selfloop transitions, 69 changer transitions 12/428 dead transitions. [2025-03-17 06:47:36,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 428 transitions, 3694 flow [2025-03-17 06:47:36,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-17 06:47:36,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-17 06:47:36,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 413 transitions. [2025-03-17 06:47:36,494 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4588888888888889 [2025-03-17 06:47:36,494 INFO L175 Difference]: Start difference. First operand has 131 places, 117 transitions, 946 flow. Second operand 15 states and 413 transitions. [2025-03-17 06:47:36,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 428 transitions, 3694 flow