./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/test-easy11.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-easy11.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 dd59a2dab1e1a10d8308eb629ebc6f779430a45291e09beb1ad6d6fe62d16e94 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 06:46:44,086 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 06:46:44,130 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-17 06:46:44,136 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 06:46:44,136 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 06:46:44,150 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 06:46:44,152 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 06:46:44,152 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 06:46:44,152 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 06:46:44,153 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 06:46:44,153 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 06:46:44,153 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 06:46:44,154 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 06:46:44,154 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 06:46:44,154 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 06:46:44,154 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 06:46:44,154 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 06:46:44,154 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 06:46:44,155 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 06:46:44,155 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 06:46:44,155 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 06:46:44,155 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 06:46:44,155 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 06:46:44,155 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 06:46:44,155 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 06:46:44,155 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 06:46:44,155 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 06:46:44,155 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 06:46:44,155 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 06:46:44,155 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 06:46:44,155 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 06:46:44,156 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 06:46:44,156 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:46:44,156 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 06:46:44,156 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 06:46:44,156 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 06:46:44,156 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 06:46:44,156 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 06:46:44,156 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 06:46:44,156 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 06:46:44,156 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 06:46:44,156 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 06:46:44,156 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 06:46:44,156 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 -> dd59a2dab1e1a10d8308eb629ebc6f779430a45291e09beb1ad6d6fe62d16e94 [2025-03-17 06:46:44,419 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 06:46:44,427 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 06:46:44,429 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 06:46:44,430 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 06:46:44,430 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 06:46:44,431 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test-easy11.wvr.c [2025-03-17 06:46:45,713 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bd4ca301/e980b0a2bae94ed895b0b0ce5dc30027/FLAG73ad339c6 [2025-03-17 06:46:45,960 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 06:46:45,962 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy11.wvr.c [2025-03-17 06:46:45,971 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bd4ca301/e980b0a2bae94ed895b0b0ce5dc30027/FLAG73ad339c6 [2025-03-17 06:46:45,981 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bd4ca301/e980b0a2bae94ed895b0b0ce5dc30027 [2025-03-17 06:46:45,983 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 06:46:45,984 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 06:46:45,985 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 06:46:45,985 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 06:46:45,988 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 06:46:45,989 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:46:45" (1/1) ... [2025-03-17 06:46:45,989 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20e64d41 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 06:46:45,989 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:46:45" (1/1) ... [2025-03-17 06:46:46,001 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 06:46:46,129 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-easy11.wvr.c[1841,1854] [2025-03-17 06:46:46,133 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:46:46,142 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 06:46:46,157 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-easy11.wvr.c[1841,1854] [2025-03-17 06:46:46,157 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:46:46,169 INFO L204 MainTranslator]: Completed translation [2025-03-17 06:46:46,170 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:46:46 WrapperNode [2025-03-17 06:46:46,170 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 06:46:46,171 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 06:46:46,171 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 06:46:46,171 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 06:46:46,176 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:46:46" (1/1) ... [2025-03-17 06:46:46,181 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:46:46" (1/1) ... [2025-03-17 06:46:46,192 INFO L138 Inliner]: procedures = 18, calls = 10, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 41 [2025-03-17 06:46:46,193 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 06:46:46,193 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 06:46:46,193 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 06:46:46,193 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 06:46:46,199 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:46:46" (1/1) ... [2025-03-17 06:46:46,199 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:46:46" (1/1) ... [2025-03-17 06:46:46,201 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:46:46" (1/1) ... [2025-03-17 06:46:46,213 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 06:46:46,215 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:46:46" (1/1) ... [2025-03-17 06:46:46,215 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:46:46" (1/1) ... [2025-03-17 06:46:46,218 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:46:46" (1/1) ... [2025-03-17 06:46:46,220 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:46:46" (1/1) ... [2025-03-17 06:46:46,221 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:46:46" (1/1) ... [2025-03-17 06:46:46,225 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:46:46" (1/1) ... [2025-03-17 06:46:46,226 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 06:46:46,227 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 06:46:46,227 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 06:46:46,227 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 06:46:46,227 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:46:46" (1/1) ... [2025-03-17 06:46:46,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:46:46,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:46:46,257 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 06:46:46,260 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 06:46:46,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 06:46:46,280 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-17 06:46:46,281 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-17 06:46:46,281 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-17 06:46:46,281 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-17 06:46:46,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 06:46:46,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 06:46:46,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 06:46:46,282 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 06:46:46,353 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 06:46:46,355 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 06:46:46,488 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 06:46:46,488 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 06:46:46,563 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 06:46:46,563 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 06:46:46,564 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:46:46 BoogieIcfgContainer [2025-03-17 06:46:46,564 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 06:46:46,566 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 06:46:46,566 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 06:46:46,570 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 06:46:46,570 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 06:46:45" (1/3) ... [2025-03-17 06:46:46,571 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d37ada7 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 06:46:46,571 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:46:46" (2/3) ... [2025-03-17 06:46:46,571 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d37ada7 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 06:46:46,571 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 06:46:46,572 INFO L128 eAbstractionObserver]: Analyzing ICFG test-easy11.wvr.c [2025-03-17 06:46:46,584 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 06:46:46,585 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG test-easy11.wvr.c that has 3 procedures, 21 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-03-17 06:46:46,586 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 06:46:46,624 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-17 06:46:46,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 27 places, 22 transitions, 58 flow [2025-03-17 06:46:46,673 INFO L124 PetriNetUnfolderBase]: 2/20 cut-off events. [2025-03-17 06:46:46,675 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-17 06:46:46,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 20 events. 2/20 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 16 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 15. Up to 2 conditions per place. [2025-03-17 06:46:46,678 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 22 transitions, 58 flow [2025-03-17 06:46:46,679 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 19 transitions, 50 flow [2025-03-17 06:46:46,689 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 06:46:46,699 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;@39461d78, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 06:46:46,699 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-03-17 06:46:46,711 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 06:46:46,711 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2025-03-17 06:46:46,711 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-17 06:46:46,712 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:46:46,712 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:46:46,713 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:46:46,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:46:46,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1484908467, now seen corresponding path program 1 times [2025-03-17 06:46:46,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:46:46,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420196991] [2025-03-17 06:46:46,727 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:46:46,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:46:46,783 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-17 06:46:46,816 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 06:46:46,817 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:46:46,817 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:47,165 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 06:46:47,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:46:47,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420196991] [2025-03-17 06:46:47,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420196991] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:46:47,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:46:47,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-17 06:46:47,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949730769] [2025-03-17 06:46:47,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:46:47,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 06:46:47,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:46:47,201 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 06:46:47,202 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-17 06:46:47,224 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:46:47,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 19 transitions, 50 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 06:46:47,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:46:47,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:46:47,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:46:47,561 INFO L124 PetriNetUnfolderBase]: 111/201 cut-off events. [2025-03-17 06:46:47,562 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2025-03-17 06:46:47,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 428 conditions, 201 events. 111/201 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 596 event pairs, 2 based on Foata normal form. 1/174 useless extension candidates. Maximal degree in co-relation 364. Up to 57 conditions per place. [2025-03-17 06:46:47,565 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 40 selfloop transitions, 10 changer transitions 10/61 dead transitions. [2025-03-17 06:46:47,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 61 transitions, 278 flow [2025-03-17 06:46:47,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 06:46:47,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-17 06:46:47,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2025-03-17 06:46:47,576 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2025-03-17 06:46:47,578 INFO L175 Difference]: Start difference. First operand has 24 places, 19 transitions, 50 flow. Second operand 9 states and 88 transitions. [2025-03-17 06:46:47,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 61 transitions, 278 flow [2025-03-17 06:46:47,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 61 transitions, 254 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-17 06:46:47,587 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 107 flow [2025-03-17 06:46:47,589 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=107, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2025-03-17 06:46:47,592 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 10 predicate places. [2025-03-17 06:46:47,592 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 107 flow [2025-03-17 06:46:47,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 06:46:47,593 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:46:47,593 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:46:47,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 06:46:47,593 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:46:47,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:46:47,594 INFO L85 PathProgramCache]: Analyzing trace with hash -8172429, now seen corresponding path program 2 times [2025-03-17 06:46:47,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:46:47,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217363709] [2025-03-17 06:46:47,594 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 06:46:47,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:46:47,604 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 1 equivalence classes. [2025-03-17 06:46:47,615 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 06:46:47,615 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 06:46:47,615 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:47,824 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 06:46:47,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:46:47,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217363709] [2025-03-17 06:46:47,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217363709] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:46:47,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:46:47,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-17 06:46:47,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475546478] [2025-03-17 06:46:47,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:46:47,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 06:46:47,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:46:47,826 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 06:46:47,826 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-17 06:46:47,833 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:46:47,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 107 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 06:46:47,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:46:47,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:46:47,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:46:48,056 INFO L124 PetriNetUnfolderBase]: 114/208 cut-off events. [2025-03-17 06:46:48,056 INFO L125 PetriNetUnfolderBase]: For 89/89 co-relation queries the response was YES. [2025-03-17 06:46:48,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 588 conditions, 208 events. 114/208 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 607 event pairs, 14 based on Foata normal form. 1/198 useless extension candidates. Maximal degree in co-relation 575. Up to 115 conditions per place. [2025-03-17 06:46:48,058 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 34 selfloop transitions, 14 changer transitions 10/59 dead transitions. [2025-03-17 06:46:48,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 59 transitions, 336 flow [2025-03-17 06:46:48,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 06:46:48,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-17 06:46:48,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 83 transitions. [2025-03-17 06:46:48,060 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41919191919191917 [2025-03-17 06:46:48,060 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 107 flow. Second operand 9 states and 83 transitions. [2025-03-17 06:46:48,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 59 transitions, 336 flow [2025-03-17 06:46:48,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 59 transitions, 324 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-03-17 06:46:48,064 INFO L231 Difference]: Finished difference. Result has 43 places, 35 transitions, 190 flow [2025-03-17 06:46:48,066 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=190, PETRI_PLACES=43, PETRI_TRANSITIONS=35} [2025-03-17 06:46:48,067 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 19 predicate places. [2025-03-17 06:46:48,067 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 35 transitions, 190 flow [2025-03-17 06:46:48,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 06:46:48,067 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:46:48,067 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:46:48,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 06:46:48,067 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:46:48,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:46:48,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1372931927, now seen corresponding path program 3 times [2025-03-17 06:46:48,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:46:48,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296972899] [2025-03-17 06:46:48,068 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 06:46:48,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:46:48,074 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 17 statements into 1 equivalence classes. [2025-03-17 06:46:48,077 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 06:46:48,078 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-17 06:46:48,078 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:48,245 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 06:46:48,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:46:48,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296972899] [2025-03-17 06:46:48,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296972899] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:46:48,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:46:48,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-17 06:46:48,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613063781] [2025-03-17 06:46:48,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:46:48,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 06:46:48,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:46:48,247 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 06:46:48,247 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-17 06:46:48,257 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:46:48,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 190 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 06:46:48,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:46:48,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:46:48,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:46:48,477 INFO L124 PetriNetUnfolderBase]: 119/216 cut-off events. [2025-03-17 06:46:48,478 INFO L125 PetriNetUnfolderBase]: For 194/194 co-relation queries the response was YES. [2025-03-17 06:46:48,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 705 conditions, 216 events. 119/216 cut-off events. For 194/194 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 667 event pairs, 10 based on Foata normal form. 1/217 useless extension candidates. Maximal degree in co-relation 688. Up to 119 conditions per place. [2025-03-17 06:46:48,480 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 39 selfloop transitions, 18 changer transitions 9/67 dead transitions. [2025-03-17 06:46:48,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 67 transitions, 450 flow [2025-03-17 06:46:48,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 06:46:48,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-17 06:46:48,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 86 transitions. [2025-03-17 06:46:48,481 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2025-03-17 06:46:48,481 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 190 flow. Second operand 9 states and 86 transitions. [2025-03-17 06:46:48,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 67 transitions, 450 flow [2025-03-17 06:46:48,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 67 transitions, 418 flow, removed 6 selfloop flow, removed 4 redundant places. [2025-03-17 06:46:48,484 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 257 flow [2025-03-17 06:46:48,484 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=257, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2025-03-17 06:46:48,484 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 25 predicate places. [2025-03-17 06:46:48,484 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 257 flow [2025-03-17 06:46:48,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 06:46:48,485 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:46:48,485 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:46:48,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 06:46:48,485 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:46:48,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:46:48,485 INFO L85 PathProgramCache]: Analyzing trace with hash 924123145, now seen corresponding path program 4 times [2025-03-17 06:46:48,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:46:48,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061241564] [2025-03-17 06:46:48,486 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 06:46:48,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:46:48,490 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 17 statements into 2 equivalence classes. [2025-03-17 06:46:48,493 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 06:46:48,496 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 06:46:48,496 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:48,669 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 06:46:48,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:46:48,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061241564] [2025-03-17 06:46:48,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061241564] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:46:48,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:46:48,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-17 06:46:48,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266104465] [2025-03-17 06:46:48,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:46:48,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 06:46:48,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:46:48,670 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 06:46:48,670 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-17 06:46:48,698 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:46:48,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 257 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 06:46:48,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:46:48,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:46:48,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:46:48,945 INFO L124 PetriNetUnfolderBase]: 194/329 cut-off events. [2025-03-17 06:46:48,945 INFO L125 PetriNetUnfolderBase]: For 601/601 co-relation queries the response was YES. [2025-03-17 06:46:48,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1221 conditions, 329 events. 194/329 cut-off events. For 601/601 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1081 event pairs, 32 based on Foata normal form. 1/330 useless extension candidates. Maximal degree in co-relation 1203. Up to 140 conditions per place. [2025-03-17 06:46:48,947 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 44 selfloop transitions, 35 changer transitions 10/90 dead transitions. [2025-03-17 06:46:48,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 90 transitions, 737 flow [2025-03-17 06:46:48,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 06:46:48,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-17 06:46:48,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2025-03-17 06:46:48,951 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5113636363636364 [2025-03-17 06:46:48,951 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 257 flow. Second operand 8 states and 90 transitions. [2025-03-17 06:46:48,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 90 transitions, 737 flow [2025-03-17 06:46:48,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 90 transitions, 661 flow, removed 6 selfloop flow, removed 6 redundant places. [2025-03-17 06:46:48,957 INFO L231 Difference]: Finished difference. Result has 53 places, 61 transitions, 490 flow [2025-03-17 06:46:48,957 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=490, PETRI_PLACES=53, PETRI_TRANSITIONS=61} [2025-03-17 06:46:48,958 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 29 predicate places. [2025-03-17 06:46:48,959 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 61 transitions, 490 flow [2025-03-17 06:46:48,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 06:46:48,959 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:46:48,959 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:46:48,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 06:46:48,959 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:46:48,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:46:48,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1292534969, now seen corresponding path program 5 times [2025-03-17 06:46:48,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:46:48,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019915956] [2025-03-17 06:46:48,961 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 06:46:48,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:46:48,966 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 17 statements into 1 equivalence classes. [2025-03-17 06:46:48,972 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 06:46:48,972 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 06:46:48,972 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:49,079 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 06:46:49,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:46:49,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019915956] [2025-03-17 06:46:49,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019915956] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:46:49,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:46:49,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-17 06:46:49,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720855122] [2025-03-17 06:46:49,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:46:49,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 06:46:49,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:46:49,081 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 06:46:49,081 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-17 06:46:49,089 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:46:49,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 61 transitions, 490 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 06:46:49,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:46:49,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:46:49,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:46:49,289 INFO L124 PetriNetUnfolderBase]: 190/328 cut-off events. [2025-03-17 06:46:49,289 INFO L125 PetriNetUnfolderBase]: For 910/910 co-relation queries the response was YES. [2025-03-17 06:46:49,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1398 conditions, 328 events. 190/328 cut-off events. For 910/910 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1153 event pairs, 14 based on Foata normal form. 1/329 useless extension candidates. Maximal degree in co-relation 1377. Up to 176 conditions per place. [2025-03-17 06:46:49,293 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 49 selfloop transitions, 28 changer transitions 12/90 dead transitions. [2025-03-17 06:46:49,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 90 transitions, 815 flow [2025-03-17 06:46:49,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 06:46:49,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-17 06:46:49,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 86 transitions. [2025-03-17 06:46:49,294 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2025-03-17 06:46:49,294 INFO L175 Difference]: Start difference. First operand has 53 places, 61 transitions, 490 flow. Second operand 9 states and 86 transitions. [2025-03-17 06:46:49,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 90 transitions, 815 flow [2025-03-17 06:46:49,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 90 transitions, 782 flow, removed 7 selfloop flow, removed 2 redundant places. [2025-03-17 06:46:49,300 INFO L231 Difference]: Finished difference. Result has 60 places, 59 transitions, 499 flow [2025-03-17 06:46:49,300 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=499, PETRI_PLACES=60, PETRI_TRANSITIONS=59} [2025-03-17 06:46:49,301 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 36 predicate places. [2025-03-17 06:46:49,301 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 59 transitions, 499 flow [2025-03-17 06:46:49,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 06:46:49,301 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:46:49,301 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:46:49,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 06:46:49,302 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:46:49,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:46:49,302 INFO L85 PathProgramCache]: Analyzing trace with hash -116112653, now seen corresponding path program 6 times [2025-03-17 06:46:49,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:46:49,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920919637] [2025-03-17 06:46:49,303 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 06:46:49,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:46:49,311 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 17 statements into 1 equivalence classes. [2025-03-17 06:46:49,314 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 06:46:49,314 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-17 06:46:49,315 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:49,413 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 06:46:49,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:46:49,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920919637] [2025-03-17 06:46:49,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920919637] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:46:49,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:46:49,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-17 06:46:49,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803112863] [2025-03-17 06:46:49,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:46:49,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 06:46:49,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:46:49,414 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 06:46:49,414 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-17 06:46:49,422 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:46:49,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 59 transitions, 499 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 06:46:49,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:46:49,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:46:49,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:46:49,703 INFO L124 PetriNetUnfolderBase]: 209/354 cut-off events. [2025-03-17 06:46:49,703 INFO L125 PetriNetUnfolderBase]: For 1168/1168 co-relation queries the response was YES. [2025-03-17 06:46:49,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1595 conditions, 354 events. 209/354 cut-off events. For 1168/1168 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1230 event pairs, 22 based on Foata normal form. 1/355 useless extension candidates. Maximal degree in co-relation 1573. Up to 186 conditions per place. [2025-03-17 06:46:49,708 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 48 selfloop transitions, 36 changer transitions 9/94 dead transitions. [2025-03-17 06:46:49,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 94 transitions, 927 flow [2025-03-17 06:46:49,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 06:46:49,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-17 06:46:49,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 86 transitions. [2025-03-17 06:46:49,709 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2025-03-17 06:46:49,709 INFO L175 Difference]: Start difference. First operand has 60 places, 59 transitions, 499 flow. Second operand 9 states and 86 transitions. [2025-03-17 06:46:49,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 94 transitions, 927 flow [2025-03-17 06:46:49,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 94 transitions, 851 flow, removed 2 selfloop flow, removed 7 redundant places. [2025-03-17 06:46:49,716 INFO L231 Difference]: Finished difference. Result has 62 places, 70 transitions, 675 flow [2025-03-17 06:46:49,716 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=675, PETRI_PLACES=62, PETRI_TRANSITIONS=70} [2025-03-17 06:46:49,716 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 38 predicate places. [2025-03-17 06:46:49,717 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 70 transitions, 675 flow [2025-03-17 06:46:49,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 06:46:49,717 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:46:49,717 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:46:49,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 06:46:49,717 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:46:49,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:46:49,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1338422575, now seen corresponding path program 7 times [2025-03-17 06:46:49,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:46:49,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429379913] [2025-03-17 06:46:49,718 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-17 06:46:49,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:46:49,723 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-17 06:46:49,726 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 06:46:49,726 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:46:49,726 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:49,842 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 06:46:49,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:46:49,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429379913] [2025-03-17 06:46:49,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429379913] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:46:49,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:46:49,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-17 06:46:49,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179345982] [2025-03-17 06:46:49,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:46:49,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 06:46:49,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:46:49,844 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 06:46:49,844 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-17 06:46:49,861 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:46:49,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 70 transitions, 675 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 06:46:49,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:46:49,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:46:49,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:46:50,042 INFO L124 PetriNetUnfolderBase]: 218/369 cut-off events. [2025-03-17 06:46:50,043 INFO L125 PetriNetUnfolderBase]: For 1544/1544 co-relation queries the response was YES. [2025-03-17 06:46:50,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1775 conditions, 369 events. 218/369 cut-off events. For 1544/1544 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1325 event pairs, 14 based on Foata normal form. 1/370 useless extension candidates. Maximal degree in co-relation 1750. Up to 189 conditions per place. [2025-03-17 06:46:50,046 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 58 selfloop transitions, 35 changer transitions 10/104 dead transitions. [2025-03-17 06:46:50,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 104 transitions, 1082 flow [2025-03-17 06:46:50,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 06:46:50,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-17 06:46:50,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2025-03-17 06:46:50,047 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2025-03-17 06:46:50,047 INFO L175 Difference]: Start difference. First operand has 62 places, 70 transitions, 675 flow. Second operand 9 states and 88 transitions. [2025-03-17 06:46:50,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 104 transitions, 1082 flow [2025-03-17 06:46:50,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 104 transitions, 1019 flow, removed 16 selfloop flow, removed 4 redundant places. [2025-03-17 06:46:50,052 INFO L231 Difference]: Finished difference. Result has 67 places, 71 transitions, 710 flow [2025-03-17 06:46:50,052 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=618, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=710, PETRI_PLACES=67, PETRI_TRANSITIONS=71} [2025-03-17 06:46:50,053 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 43 predicate places. [2025-03-17 06:46:50,053 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 71 transitions, 710 flow [2025-03-17 06:46:50,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 06:46:50,053 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:46:50,053 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:46:50,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 06:46:50,053 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:46:50,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:46:50,054 INFO L85 PathProgramCache]: Analyzing trace with hash 419117149, now seen corresponding path program 8 times [2025-03-17 06:46:50,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:46:50,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764390301] [2025-03-17 06:46:50,054 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 06:46:50,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:46:50,057 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 1 equivalence classes. [2025-03-17 06:46:50,060 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 06:46:50,060 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 06:46:50,060 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:50,173 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 06:46:50,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:46:50,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764390301] [2025-03-17 06:46:50,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764390301] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:46:50,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:46:50,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-17 06:46:50,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636661624] [2025-03-17 06:46:50,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:46:50,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 06:46:50,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:46:50,175 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 06:46:50,175 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-17 06:46:50,183 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:46:50,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 71 transitions, 710 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 06:46:50,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:46:50,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:46:50,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:46:50,435 INFO L124 PetriNetUnfolderBase]: 212/362 cut-off events. [2025-03-17 06:46:50,435 INFO L125 PetriNetUnfolderBase]: For 1732/1732 co-relation queries the response was YES. [2025-03-17 06:46:50,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1802 conditions, 362 events. 212/362 cut-off events. For 1732/1732 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1285 event pairs, 19 based on Foata normal form. 1/363 useless extension candidates. Maximal degree in co-relation 1776. Up to 194 conditions per place. [2025-03-17 06:46:50,438 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 49 selfloop transitions, 37 changer transitions 9/96 dead transitions. [2025-03-17 06:46:50,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 96 transitions, 1047 flow [2025-03-17 06:46:50,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 06:46:50,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-17 06:46:50,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 86 transitions. [2025-03-17 06:46:50,440 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2025-03-17 06:46:50,440 INFO L175 Difference]: Start difference. First operand has 67 places, 71 transitions, 710 flow. Second operand 9 states and 86 transitions. [2025-03-17 06:46:50,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 96 transitions, 1047 flow [2025-03-17 06:46:50,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 96 transitions, 961 flow, removed 8 selfloop flow, removed 7 redundant places. [2025-03-17 06:46:50,447 INFO L231 Difference]: Finished difference. Result has 70 places, 73 transitions, 749 flow [2025-03-17 06:46:50,448 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=626, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=749, PETRI_PLACES=70, PETRI_TRANSITIONS=73} [2025-03-17 06:46:50,448 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 46 predicate places. [2025-03-17 06:46:50,448 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 73 transitions, 749 flow [2025-03-17 06:46:50,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 06:46:50,449 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:46:50,449 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:46:50,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-17 06:46:50,449 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:46:50,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:46:50,450 INFO L85 PathProgramCache]: Analyzing trace with hash -35715695, now seen corresponding path program 9 times [2025-03-17 06:46:50,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:46:50,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428754004] [2025-03-17 06:46:50,450 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 06:46:50,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:46:50,454 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 17 statements into 1 equivalence classes. [2025-03-17 06:46:50,457 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 06:46:50,457 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-17 06:46:50,457 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:50,555 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 06:46:50,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:46:50,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428754004] [2025-03-17 06:46:50,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428754004] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:46:50,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:46:50,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-17 06:46:50,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995894583] [2025-03-17 06:46:50,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:46:50,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 06:46:50,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:46:50,556 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 06:46:50,557 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-17 06:46:50,567 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:46:50,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 73 transitions, 749 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 06:46:50,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:46:50,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:46:50,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:46:50,782 INFO L124 PetriNetUnfolderBase]: 211/362 cut-off events. [2025-03-17 06:46:50,782 INFO L125 PetriNetUnfolderBase]: For 1767/1767 co-relation queries the response was YES. [2025-03-17 06:46:50,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1789 conditions, 362 events. 211/362 cut-off events. For 1767/1767 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1301 event pairs, 20 based on Foata normal form. 1/363 useless extension candidates. Maximal degree in co-relation 1761. Up to 192 conditions per place. [2025-03-17 06:46:50,785 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 48 selfloop transitions, 35 changer transitions 12/96 dead transitions. [2025-03-17 06:46:50,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 96 transitions, 1050 flow [2025-03-17 06:46:50,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 06:46:50,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-17 06:46:50,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 86 transitions. [2025-03-17 06:46:50,787 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2025-03-17 06:46:50,787 INFO L175 Difference]: Start difference. First operand has 70 places, 73 transitions, 749 flow. Second operand 9 states and 86 transitions. [2025-03-17 06:46:50,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 96 transitions, 1050 flow [2025-03-17 06:46:50,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 96 transitions, 980 flow, removed 7 selfloop flow, removed 5 redundant places. [2025-03-17 06:46:50,793 INFO L231 Difference]: Finished difference. Result has 73 places, 71 transitions, 726 flow [2025-03-17 06:46:50,794 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=679, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=726, PETRI_PLACES=73, PETRI_TRANSITIONS=71} [2025-03-17 06:46:50,794 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 49 predicate places. [2025-03-17 06:46:50,794 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 71 transitions, 726 flow [2025-03-17 06:46:50,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 06:46:50,795 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:46:50,795 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:46:50,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-17 06:46:50,795 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:46:50,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:46:50,796 INFO L85 PathProgramCache]: Analyzing trace with hash -945643823, now seen corresponding path program 10 times [2025-03-17 06:46:50,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:46:50,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185530107] [2025-03-17 06:46:50,796 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 06:46:50,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:46:50,799 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 17 statements into 2 equivalence classes. [2025-03-17 06:46:50,802 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 06:46:50,803 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 06:46:50,803 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:50,932 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 06:46:50,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:46:50,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185530107] [2025-03-17 06:46:50,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185530107] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:46:50,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:46:50,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-17 06:46:50,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588125832] [2025-03-17 06:46:50,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:46:50,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 06:46:50,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:46:50,933 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 06:46:50,933 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-17 06:46:50,946 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:46:50,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 71 transitions, 726 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 06:46:50,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:46:50,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:46:50,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:46:51,240 INFO L124 PetriNetUnfolderBase]: 283/471 cut-off events. [2025-03-17 06:46:51,240 INFO L125 PetriNetUnfolderBase]: For 2642/2642 co-relation queries the response was YES. [2025-03-17 06:46:51,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2460 conditions, 471 events. 283/471 cut-off events. For 2642/2642 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1784 event pairs, 41 based on Foata normal form. 1/472 useless extension candidates. Maximal degree in co-relation 2432. Up to 215 conditions per place. [2025-03-17 06:46:51,244 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 60 selfloop transitions, 51 changer transitions 9/121 dead transitions. [2025-03-17 06:46:51,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 121 transitions, 1418 flow [2025-03-17 06:46:51,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 06:46:51,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-17 06:46:51,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2025-03-17 06:46:51,246 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486 [2025-03-17 06:46:51,246 INFO L175 Difference]: Start difference. First operand has 73 places, 71 transitions, 726 flow. Second operand 9 states and 96 transitions. [2025-03-17 06:46:51,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 121 transitions, 1418 flow [2025-03-17 06:46:51,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 121 transitions, 1306 flow, removed 3 selfloop flow, removed 7 redundant places. [2025-03-17 06:46:51,255 INFO L231 Difference]: Finished difference. Result has 76 places, 92 transitions, 1084 flow [2025-03-17 06:46:51,256 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=652, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1084, PETRI_PLACES=76, PETRI_TRANSITIONS=92} [2025-03-17 06:46:51,257 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 52 predicate places. [2025-03-17 06:46:51,258 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 92 transitions, 1084 flow [2025-03-17 06:46:51,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 06:46:51,258 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:46:51,258 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:46:51,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-17 06:46:51,258 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:46:51,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:46:51,259 INFO L85 PathProgramCache]: Analyzing trace with hash -559256859, now seen corresponding path program 11 times [2025-03-17 06:46:51,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:46:51,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191254590] [2025-03-17 06:46:51,259 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 06:46:51,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:46:51,266 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 17 statements into 1 equivalence classes. [2025-03-17 06:46:51,269 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 06:46:51,269 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 06:46:51,269 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:51,388 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 06:46:51,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:46:51,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191254590] [2025-03-17 06:46:51,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191254590] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:46:51,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:46:51,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-17 06:46:51,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829956584] [2025-03-17 06:46:51,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:46:51,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 06:46:51,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:46:51,389 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 06:46:51,390 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-17 06:46:51,397 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:46:51,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 92 transitions, 1084 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 06:46:51,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:46:51,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:46:51,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:46:51,583 INFO L124 PetriNetUnfolderBase]: 285/479 cut-off events. [2025-03-17 06:46:51,584 INFO L125 PetriNetUnfolderBase]: For 2860/2860 co-relation queries the response was YES. [2025-03-17 06:46:51,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2632 conditions, 479 events. 285/479 cut-off events. For 2860/2860 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1830 event pairs, 28 based on Foata normal form. 1/480 useless extension candidates. Maximal degree in co-relation 2600. Up to 241 conditions per place. [2025-03-17 06:46:51,587 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 52 selfloop transitions, 49 changer transitions 14/116 dead transitions. [2025-03-17 06:46:51,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 116 transitions, 1439 flow [2025-03-17 06:46:51,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 06:46:51,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-17 06:46:51,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 86 transitions. [2025-03-17 06:46:51,589 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2025-03-17 06:46:51,589 INFO L175 Difference]: Start difference. First operand has 76 places, 92 transitions, 1084 flow. Second operand 9 states and 86 transitions. [2025-03-17 06:46:51,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 116 transitions, 1439 flow [2025-03-17 06:46:51,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 116 transitions, 1380 flow, removed 14 selfloop flow, removed 3 redundant places. [2025-03-17 06:46:51,596 INFO L231 Difference]: Finished difference. Result has 81 places, 89 transitions, 1088 flow [2025-03-17 06:46:51,597 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1028, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1088, PETRI_PLACES=81, PETRI_TRANSITIONS=89} [2025-03-17 06:46:51,598 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 57 predicate places. [2025-03-17 06:46:51,598 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 89 transitions, 1088 flow [2025-03-17 06:46:51,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 06:46:51,598 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:46:51,598 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:46:51,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-17 06:46:51,599 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:46:51,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:46:51,600 INFO L85 PathProgramCache]: Analyzing trace with hash 849760601, now seen corresponding path program 12 times [2025-03-17 06:46:51,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:46:51,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764917372] [2025-03-17 06:46:51,600 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 06:46:51,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:46:51,603 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 17 statements into 1 equivalence classes. [2025-03-17 06:46:51,607 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 06:46:51,607 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-17 06:46:51,607 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:51,685 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 06:46:51,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:46:51,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764917372] [2025-03-17 06:46:51,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764917372] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:46:51,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:46:51,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-17 06:46:51,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971753669] [2025-03-17 06:46:51,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:46:51,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 06:46:51,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:46:51,686 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 06:46:51,686 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2025-03-17 06:46:51,696 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:46:51,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 89 transitions, 1088 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 06:46:51,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:46:51,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:46:51,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:46:51,882 INFO L124 PetriNetUnfolderBase]: 299/499 cut-off events. [2025-03-17 06:46:51,882 INFO L125 PetriNetUnfolderBase]: For 3254/3254 co-relation queries the response was YES. [2025-03-17 06:46:51,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2715 conditions, 499 events. 299/499 cut-off events. For 3254/3254 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1898 event pairs, 28 based on Foata normal form. 1/500 useless extension candidates. Maximal degree in co-relation 2683. Up to 247 conditions per place. [2025-03-17 06:46:51,886 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 55 selfloop transitions, 50 changer transitions 11/117 dead transitions. [2025-03-17 06:46:51,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 117 transitions, 1473 flow [2025-03-17 06:46:51,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 06:46:51,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-17 06:46:51,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2025-03-17 06:46:51,887 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2025-03-17 06:46:51,887 INFO L175 Difference]: Start difference. First operand has 81 places, 89 transitions, 1088 flow. Second operand 9 states and 88 transitions. [2025-03-17 06:46:51,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 117 transitions, 1473 flow [2025-03-17 06:46:51,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 117 transitions, 1361 flow, removed 7 selfloop flow, removed 7 redundant places. [2025-03-17 06:46:51,894 INFO L231 Difference]: Finished difference. Result has 81 places, 90 transitions, 1107 flow [2025-03-17 06:46:51,894 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=980, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1107, PETRI_PLACES=81, PETRI_TRANSITIONS=90} [2025-03-17 06:46:51,894 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 57 predicate places. [2025-03-17 06:46:51,895 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 90 transitions, 1107 flow [2025-03-17 06:46:51,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 06:46:51,895 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:46:51,895 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:46:51,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-17 06:46:51,895 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:46:51,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:46:51,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1004520103, now seen corresponding path program 13 times [2025-03-17 06:46:51,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:46:51,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732146413] [2025-03-17 06:46:51,895 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-17 06:46:51,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:46:51,898 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-17 06:46:51,899 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 06:46:51,899 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:46:51,900 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:51,995 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 06:46:51,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:46:51,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732146413] [2025-03-17 06:46:51,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732146413] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:46:51,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:46:51,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-17 06:46:51,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193503189] [2025-03-17 06:46:51,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:46:51,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 06:46:51,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:46:51,997 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 06:46:51,997 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-17 06:46:52,007 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:46:52,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 90 transitions, 1107 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 06:46:52,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:46:52,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:46:52,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:46:52,257 INFO L124 PetriNetUnfolderBase]: 313/525 cut-off events. [2025-03-17 06:46:52,257 INFO L125 PetriNetUnfolderBase]: For 4020/4020 co-relation queries the response was YES. [2025-03-17 06:46:52,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2987 conditions, 525 events. 313/525 cut-off events. For 4020/4020 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2010 event pairs, 42 based on Foata normal form. 1/526 useless extension candidates. Maximal degree in co-relation 2954. Up to 271 conditions per place. [2025-03-17 06:46:52,263 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 58 selfloop transitions, 55 changer transitions 12/126 dead transitions. [2025-03-17 06:46:52,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 126 transitions, 1698 flow [2025-03-17 06:46:52,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 06:46:52,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-17 06:46:52,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 86 transitions. [2025-03-17 06:46:52,264 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2025-03-17 06:46:52,264 INFO L175 Difference]: Start difference. First operand has 81 places, 90 transitions, 1107 flow. Second operand 9 states and 86 transitions. [2025-03-17 06:46:52,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 126 transitions, 1698 flow [2025-03-17 06:46:52,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 126 transitions, 1563 flow, removed 11 selfloop flow, removed 7 redundant places. [2025-03-17 06:46:52,274 INFO L231 Difference]: Finished difference. Result has 85 places, 101 transitions, 1335 flow [2025-03-17 06:46:52,275 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=990, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1335, PETRI_PLACES=85, PETRI_TRANSITIONS=101} [2025-03-17 06:46:52,275 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 61 predicate places. [2025-03-17 06:46:52,275 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 101 transitions, 1335 flow [2025-03-17 06:46:52,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 06:46:52,276 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:46:52,276 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:46:52,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-17 06:46:52,276 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:46:52,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:46:52,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1889996399, now seen corresponding path program 14 times [2025-03-17 06:46:52,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:46:52,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032330076] [2025-03-17 06:46:52,277 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 06:46:52,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:46:52,281 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 1 equivalence classes. [2025-03-17 06:46:52,283 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 06:46:52,283 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 06:46:52,283 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:52,387 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 06:46:52,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:46:52,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032330076] [2025-03-17 06:46:52,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032330076] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:46:52,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:46:52,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-17 06:46:52,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510954156] [2025-03-17 06:46:52,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:46:52,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 06:46:52,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:46:52,388 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 06:46:52,388 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2025-03-17 06:46:52,401 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:46:52,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 101 transitions, 1335 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 06:46:52,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:46:52,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:46:52,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:46:52,698 INFO L124 PetriNetUnfolderBase]: 339/571 cut-off events. [2025-03-17 06:46:52,699 INFO L125 PetriNetUnfolderBase]: For 5078/5078 co-relation queries the response was YES. [2025-03-17 06:46:52,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3313 conditions, 571 events. 339/571 cut-off events. For 5078/5078 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2257 event pairs, 43 based on Foata normal form. 1/572 useless extension candidates. Maximal degree in co-relation 3277. Up to 283 conditions per place. [2025-03-17 06:46:52,703 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 60 selfloop transitions, 60 changer transitions 11/132 dead transitions. [2025-03-17 06:46:52,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 132 transitions, 1841 flow [2025-03-17 06:46:52,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 06:46:52,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-17 06:46:52,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2025-03-17 06:46:52,704 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2025-03-17 06:46:52,704 INFO L175 Difference]: Start difference. First operand has 85 places, 101 transitions, 1335 flow. Second operand 9 states and 88 transitions. [2025-03-17 06:46:52,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 132 transitions, 1841 flow [2025-03-17 06:46:52,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 132 transitions, 1729 flow, removed 35 selfloop flow, removed 4 redundant places. [2025-03-17 06:46:52,715 INFO L231 Difference]: Finished difference. Result has 91 places, 106 transitions, 1467 flow [2025-03-17 06:46:52,715 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1247, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1467, PETRI_PLACES=91, PETRI_TRANSITIONS=106} [2025-03-17 06:46:52,715 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 67 predicate places. [2025-03-17 06:46:52,715 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 106 transitions, 1467 flow [2025-03-17 06:46:52,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 06:46:52,715 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:46:52,716 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:46:52,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-17 06:46:52,716 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:46:52,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:46:52,716 INFO L85 PathProgramCache]: Analyzing trace with hash -915474781, now seen corresponding path program 15 times [2025-03-17 06:46:52,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:46:52,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871501516] [2025-03-17 06:46:52,716 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 06:46:52,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:46:52,720 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 17 statements into 1 equivalence classes. [2025-03-17 06:46:52,721 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 06:46:52,721 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-17 06:46:52,722 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:52,803 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 06:46:52,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:46:52,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871501516] [2025-03-17 06:46:52,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871501516] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:46:52,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:46:52,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-17 06:46:52,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573134612] [2025-03-17 06:46:52,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:46:52,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 06:46:52,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:46:52,804 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 06:46:52,805 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-17 06:46:52,812 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:46:52,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 106 transitions, 1467 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 06:46:52,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:46:52,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:46:52,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:46:52,989 INFO L124 PetriNetUnfolderBase]: 331/561 cut-off events. [2025-03-17 06:46:52,990 INFO L125 PetriNetUnfolderBase]: For 5486/5486 co-relation queries the response was YES. [2025-03-17 06:46:52,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3390 conditions, 561 events. 331/561 cut-off events. For 5486/5486 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2238 event pairs, 37 based on Foata normal form. 1/562 useless extension candidates. Maximal degree in co-relation 3352. Up to 229 conditions per place. [2025-03-17 06:46:52,994 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 76 selfloop transitions, 47 changer transitions 9/133 dead transitions. [2025-03-17 06:46:52,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 133 transitions, 1946 flow [2025-03-17 06:46:52,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 06:46:52,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-17 06:46:52,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 81 transitions. [2025-03-17 06:46:52,996 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2025-03-17 06:46:52,996 INFO L175 Difference]: Start difference. First operand has 91 places, 106 transitions, 1467 flow. Second operand 9 states and 81 transitions. [2025-03-17 06:46:52,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 133 transitions, 1946 flow [2025-03-17 06:46:53,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 133 transitions, 1869 flow, removed 18 selfloop flow, removed 4 redundant places. [2025-03-17 06:46:53,009 INFO L231 Difference]: Finished difference. Result has 95 places, 107 transitions, 1510 flow [2025-03-17 06:46:53,009 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1390, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1510, PETRI_PLACES=95, PETRI_TRANSITIONS=107} [2025-03-17 06:46:53,009 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 71 predicate places. [2025-03-17 06:46:53,010 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 107 transitions, 1510 flow [2025-03-17 06:46:53,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 06:46:53,010 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:46:53,010 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:46:53,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-17 06:46:53,010 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:46:53,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:46:53,011 INFO L85 PathProgramCache]: Analyzing trace with hash -918100557, now seen corresponding path program 16 times [2025-03-17 06:46:53,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:46:53,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646149448] [2025-03-17 06:46:53,011 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 06:46:53,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:46:53,014 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 17 statements into 2 equivalence classes. [2025-03-17 06:46:53,017 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 06:46:53,017 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 06:46:53,017 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:53,113 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 06:46:53,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:46:53,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646149448] [2025-03-17 06:46:53,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646149448] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:46:53,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:46:53,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-17 06:46:53,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322358207] [2025-03-17 06:46:53,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:46:53,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 06:46:53,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:46:53,115 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 06:46:53,115 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-03-17 06:46:53,126 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:46:53,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 107 transitions, 1510 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 06:46:53,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:46:53,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:46:53,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:46:53,301 INFO L124 PetriNetUnfolderBase]: 335/569 cut-off events. [2025-03-17 06:46:53,301 INFO L125 PetriNetUnfolderBase]: For 5723/5723 co-relation queries the response was YES. [2025-03-17 06:46:53,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3409 conditions, 569 events. 335/569 cut-off events. For 5723/5723 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2309 event pairs, 66 based on Foata normal form. 1/570 useless extension candidates. Maximal degree in co-relation 3371. Up to 321 conditions per place. [2025-03-17 06:46:53,306 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 67 selfloop transitions, 56 changer transitions 10/134 dead transitions. [2025-03-17 06:46:53,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 134 transitions, 2008 flow [2025-03-17 06:46:53,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 06:46:53,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-17 06:46:53,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 85 transitions. [2025-03-17 06:46:53,307 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4292929292929293 [2025-03-17 06:46:53,307 INFO L175 Difference]: Start difference. First operand has 95 places, 107 transitions, 1510 flow. Second operand 9 states and 85 transitions. [2025-03-17 06:46:53,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 134 transitions, 2008 flow [2025-03-17 06:46:53,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 134 transitions, 1873 flow, removed 13 selfloop flow, removed 6 redundant places. [2025-03-17 06:46:53,318 INFO L231 Difference]: Finished difference. Result has 99 places, 110 transitions, 1584 flow [2025-03-17 06:46:53,318 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1385, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1584, PETRI_PLACES=99, PETRI_TRANSITIONS=110} [2025-03-17 06:46:53,319 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 75 predicate places. [2025-03-17 06:46:53,322 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 110 transitions, 1584 flow [2025-03-17 06:46:53,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 06:46:53,323 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:46:53,323 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:46:53,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-17 06:46:53,323 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:46:53,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:46:53,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1539749905, now seen corresponding path program 17 times [2025-03-17 06:46:53,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:46:53,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350677007] [2025-03-17 06:46:53,323 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 06:46:53,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:46:53,326 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 17 statements into 1 equivalence classes. [2025-03-17 06:46:53,332 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 06:46:53,332 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 06:46:53,332 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:53,441 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 06:46:53,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:46:53,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350677007] [2025-03-17 06:46:53,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350677007] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:46:53,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:46:53,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-17 06:46:53,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201842917] [2025-03-17 06:46:53,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:46:53,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 06:46:53,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:46:53,442 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 06:46:53,442 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-17 06:46:53,453 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:46:53,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 110 transitions, 1584 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 06:46:53,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:46:53,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:46:53,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:46:53,667 INFO L124 PetriNetUnfolderBase]: 327/557 cut-off events. [2025-03-17 06:46:53,668 INFO L125 PetriNetUnfolderBase]: For 5973/5973 co-relation queries the response was YES. [2025-03-17 06:46:53,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3395 conditions, 557 events. 327/557 cut-off events. For 5973/5973 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2210 event pairs, 45 based on Foata normal form. 1/558 useless extension candidates. Maximal degree in co-relation 3356. Up to 303 conditions per place. [2025-03-17 06:46:53,673 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 61 selfloop transitions, 56 changer transitions 13/131 dead transitions. [2025-03-17 06:46:53,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 131 transitions, 1993 flow [2025-03-17 06:46:53,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 06:46:53,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-17 06:46:53,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 85 transitions. [2025-03-17 06:46:53,675 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4292929292929293 [2025-03-17 06:46:53,675 INFO L175 Difference]: Start difference. First operand has 99 places, 110 transitions, 1584 flow. Second operand 9 states and 85 transitions. [2025-03-17 06:46:53,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 131 transitions, 1993 flow [2025-03-17 06:46:53,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 131 transitions, 1892 flow, removed 17 selfloop flow, removed 4 redundant places. [2025-03-17 06:46:53,690 INFO L231 Difference]: Finished difference. Result has 103 places, 106 transitions, 1557 flow [2025-03-17 06:46:53,690 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1483, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1557, PETRI_PLACES=103, PETRI_TRANSITIONS=106} [2025-03-17 06:46:53,691 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 79 predicate places. [2025-03-17 06:46:53,691 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 106 transitions, 1557 flow [2025-03-17 06:46:53,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 06:46:53,691 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:46:53,691 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:46:53,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-17 06:46:53,691 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:46:53,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:46:53,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1304936656, now seen corresponding path program 1 times [2025-03-17 06:46:53,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:46:53,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668375019] [2025-03-17 06:46:53,692 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:46:53,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:46:53,696 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 06:46:53,698 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 06:46:53,699 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:46:53,699 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:53,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:46:53,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:46:53,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668375019] [2025-03-17 06:46:53,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668375019] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:46:53,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:46:53,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 06:46:53,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772632322] [2025-03-17 06:46:53,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:46:53,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:46:53,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:46:53,750 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:46:53,750 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 06:46:53,754 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:46:53,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 106 transitions, 1557 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 06:46:53,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:46:53,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:46:53,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:46:53,912 INFO L124 PetriNetUnfolderBase]: 344/601 cut-off events. [2025-03-17 06:46:53,913 INFO L125 PetriNetUnfolderBase]: For 6428/6428 co-relation queries the response was YES. [2025-03-17 06:46:53,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3523 conditions, 601 events. 344/601 cut-off events. For 6428/6428 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2547 event pairs, 45 based on Foata normal form. 12/613 useless extension candidates. Maximal degree in co-relation 3480. Up to 145 conditions per place. [2025-03-17 06:46:53,918 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 93 selfloop transitions, 40 changer transitions 6/140 dead transitions. [2025-03-17 06:46:53,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 140 transitions, 2098 flow [2025-03-17 06:46:53,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 06:46:53,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 06:46:53,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 77 transitions. [2025-03-17 06:46:53,919 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2025-03-17 06:46:53,919 INFO L175 Difference]: Start difference. First operand has 103 places, 106 transitions, 1557 flow. Second operand 7 states and 77 transitions. [2025-03-17 06:46:53,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 140 transitions, 2098 flow [2025-03-17 06:46:53,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 140 transitions, 1972 flow, removed 8 selfloop flow, removed 6 redundant places. [2025-03-17 06:46:53,932 INFO L231 Difference]: Finished difference. Result has 105 places, 110 transitions, 1634 flow [2025-03-17 06:46:53,932 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1416, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1634, PETRI_PLACES=105, PETRI_TRANSITIONS=110} [2025-03-17 06:46:53,934 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 81 predicate places. [2025-03-17 06:46:53,934 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 110 transitions, 1634 flow [2025-03-17 06:46:53,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 06:46:53,934 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:46:53,934 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:46:53,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-17 06:46:53,934 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:46:53,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:46:53,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1332516420, now seen corresponding path program 2 times [2025-03-17 06:46:53,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:46:53,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416949557] [2025-03-17 06:46:53,935 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 06:46:53,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:46:53,940 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-03-17 06:46:53,943 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 06:46:53,943 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 06:46:53,943 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:53,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:46:53,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:46:53,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416949557] [2025-03-17 06:46:53,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416949557] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:46:53,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007062140] [2025-03-17 06:46:53,966 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 06:46:53,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:46:53,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:46:53,973 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) [2025-03-17 06:46:53,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 06:46:54,003 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-03-17 06:46:54,013 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 06:46:54,013 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 06:46:54,013 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:54,015 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 06:46:54,018 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:46:54,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:46:54,043 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:46:54,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:46:54,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007062140] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-17 06:46:54,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-17 06:46:54,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2025-03-17 06:46:54,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34429764] [2025-03-17 06:46:54,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:46:54,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:46:54,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:46:54,075 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:46:54,075 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-17 06:46:54,078 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:46:54,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 110 transitions, 1634 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 06:46:54,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:46:54,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:46:54,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:46:54,226 INFO L124 PetriNetUnfolderBase]: 429/759 cut-off events. [2025-03-17 06:46:54,227 INFO L125 PetriNetUnfolderBase]: For 9382/9382 co-relation queries the response was YES. [2025-03-17 06:46:54,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4532 conditions, 759 events. 429/759 cut-off events. For 9382/9382 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3414 event pairs, 74 based on Foata normal form. 8/767 useless extension candidates. Maximal degree in co-relation 3938. Up to 270 conditions per place. [2025-03-17 06:46:54,234 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 125 selfloop transitions, 41 changer transitions 0/167 dead transitions. [2025-03-17 06:46:54,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 167 transitions, 2486 flow [2025-03-17 06:46:54,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 06:46:54,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 06:46:54,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2025-03-17 06:46:54,235 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6515151515151515 [2025-03-17 06:46:54,235 INFO L175 Difference]: Start difference. First operand has 105 places, 110 transitions, 1634 flow. Second operand 6 states and 86 transitions. [2025-03-17 06:46:54,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 167 transitions, 2486 flow [2025-03-17 06:46:54,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 167 transitions, 2332 flow, removed 46 selfloop flow, removed 3 redundant places. [2025-03-17 06:46:54,252 INFO L231 Difference]: Finished difference. Result has 111 places, 119 transitions, 1826 flow [2025-03-17 06:46:54,252 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1522, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1826, PETRI_PLACES=111, PETRI_TRANSITIONS=119} [2025-03-17 06:46:54,253 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 87 predicate places. [2025-03-17 06:46:54,253 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 119 transitions, 1826 flow [2025-03-17 06:46:54,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 06:46:54,253 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:46:54,253 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:46:54,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-17 06:46:54,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:46:54,455 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:46:54,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:46:54,455 INFO L85 PathProgramCache]: Analyzing trace with hash 191033131, now seen corresponding path program 1 times [2025-03-17 06:46:54,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:46:54,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750315447] [2025-03-17 06:46:54,456 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:46:54,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:46:54,461 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 06:46:54,465 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 06:46:54,465 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:46:54,465 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:54,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:46:54,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:46:54,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750315447] [2025-03-17 06:46:54,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750315447] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:46:54,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699601303] [2025-03-17 06:46:54,489 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:46:54,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:46:54,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:46:54,492 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) [2025-03-17 06:46:54,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 06:46:54,525 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 06:46:54,534 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 06:46:54,534 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:46:54,534 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:54,535 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 06:46:54,536 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:46:54,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:46:54,547 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:46:54,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:46:54,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699601303] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-17 06:46:54,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-17 06:46:54,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 6 [2025-03-17 06:46:54,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234886016] [2025-03-17 06:46:54,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:46:54,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:46:54,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:46:54,567 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:46:54,567 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-17 06:46:54,570 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:46:54,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 119 transitions, 1826 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 06:46:54,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:46:54,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:46:54,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:46:54,680 INFO L124 PetriNetUnfolderBase]: 437/774 cut-off events. [2025-03-17 06:46:54,680 INFO L125 PetriNetUnfolderBase]: For 9223/9223 co-relation queries the response was YES. [2025-03-17 06:46:54,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4663 conditions, 774 events. 437/774 cut-off events. For 9223/9223 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3508 event pairs, 58 based on Foata normal form. 11/785 useless extension candidates. Maximal degree in co-relation 4230. Up to 390 conditions per place. [2025-03-17 06:46:54,686 INFO L140 encePairwiseOnDemand]: 17/22 looper letters, 106 selfloop transitions, 36 changer transitions 0/143 dead transitions. [2025-03-17 06:46:54,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 143 transitions, 2286 flow [2025-03-17 06:46:54,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 06:46:54,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 06:46:54,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 64 transitions. [2025-03-17 06:46:54,687 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5818181818181818 [2025-03-17 06:46:54,687 INFO L175 Difference]: Start difference. First operand has 111 places, 119 transitions, 1826 flow. Second operand 5 states and 64 transitions. [2025-03-17 06:46:54,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 143 transitions, 2286 flow [2025-03-17 06:46:54,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 143 transitions, 2186 flow, removed 22 selfloop flow, removed 3 redundant places. [2025-03-17 06:46:54,706 INFO L231 Difference]: Finished difference. Result has 113 places, 118 transitions, 1801 flow [2025-03-17 06:46:54,706 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1681, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1801, PETRI_PLACES=113, PETRI_TRANSITIONS=118} [2025-03-17 06:46:54,706 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 89 predicate places. [2025-03-17 06:46:54,706 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 118 transitions, 1801 flow [2025-03-17 06:46:54,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 06:46:54,707 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:46:54,707 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:46:54,713 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-17 06:46:54,907 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,SelfDestructingSolverStorable19 [2025-03-17 06:46:54,908 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:46:54,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:46:54,908 INFO L85 PathProgramCache]: Analyzing trace with hash -404857971, now seen corresponding path program 2 times [2025-03-17 06:46:54,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:46:54,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707705050] [2025-03-17 06:46:54,912 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 06:46:54,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:46:54,920 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-03-17 06:46:54,924 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 06:46:54,924 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 06:46:54,924 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:54,960 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:46:54,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:46:54,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707705050] [2025-03-17 06:46:54,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707705050] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:46:54,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:46:54,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 06:46:54,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221612456] [2025-03-17 06:46:54,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:46:54,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:46:54,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:46:54,964 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:46:54,964 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 06:46:54,967 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:46:54,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 118 transitions, 1801 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 06:46:54,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:46:54,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:46:54,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:46:55,124 INFO L124 PetriNetUnfolderBase]: 517/928 cut-off events. [2025-03-17 06:46:55,124 INFO L125 PetriNetUnfolderBase]: For 11008/11008 co-relation queries the response was YES. [2025-03-17 06:46:55,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5407 conditions, 928 events. 517/928 cut-off events. For 11008/11008 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4507 event pairs, 50 based on Foata normal form. 12/940 useless extension candidates. Maximal degree in co-relation 5046. Up to 387 conditions per place. [2025-03-17 06:46:55,132 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 130 selfloop transitions, 32 changer transitions 2/165 dead transitions. [2025-03-17 06:46:55,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 165 transitions, 2685 flow [2025-03-17 06:46:55,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 06:46:55,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 06:46:55,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 69 transitions. [2025-03-17 06:46:55,136 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5227272727272727 [2025-03-17 06:46:55,136 INFO L175 Difference]: Start difference. First operand has 113 places, 118 transitions, 1801 flow. Second operand 6 states and 69 transitions. [2025-03-17 06:46:55,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 165 transitions, 2685 flow [2025-03-17 06:46:55,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 165 transitions, 2606 flow, removed 8 selfloop flow, removed 5 redundant places. [2025-03-17 06:46:55,164 INFO L231 Difference]: Finished difference. Result has 117 places, 122 transitions, 1924 flow [2025-03-17 06:46:55,164 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1699, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1924, PETRI_PLACES=117, PETRI_TRANSITIONS=122} [2025-03-17 06:46:55,164 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 93 predicate places. [2025-03-17 06:46:55,165 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 122 transitions, 1924 flow [2025-03-17 06:46:55,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 06:46:55,165 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:46:55,165 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:46:55,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-17 06:46:55,165 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:46:55,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:46:55,166 INFO L85 PathProgramCache]: Analyzing trace with hash -2057811345, now seen corresponding path program 3 times [2025-03-17 06:46:55,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:46:55,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050576805] [2025-03-17 06:46:55,166 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 06:46:55,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:46:55,170 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 2 equivalence classes. [2025-03-17 06:46:55,173 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 06:46:55,173 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-17 06:46:55,173 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:55,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:46:55,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:46:55,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050576805] [2025-03-17 06:46:55,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050576805] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:46:55,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096020878] [2025-03-17 06:46:55,206 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 06:46:55,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:46:55,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:46:55,210 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) [2025-03-17 06:46:55,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 06:46:55,245 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 2 equivalence classes. [2025-03-17 06:46:55,264 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 06:46:55,265 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-17 06:46:55,265 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:55,266 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 06:46:55,267 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:46:55,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:46:55,277 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:46:55,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:46:55,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096020878] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-17 06:46:55,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-17 06:46:55,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2025-03-17 06:46:55,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461791477] [2025-03-17 06:46:55,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:46:55,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:46:55,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:46:55,305 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:46:55,305 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-17 06:46:55,308 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:46:55,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 122 transitions, 1924 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 06:46:55,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:46:55,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:46:55,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:46:55,483 INFO L124 PetriNetUnfolderBase]: 512/923 cut-off events. [2025-03-17 06:46:55,483 INFO L125 PetriNetUnfolderBase]: For 12503/12503 co-relation queries the response was YES. [2025-03-17 06:46:55,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5563 conditions, 923 events. 512/923 cut-off events. For 12503/12503 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4473 event pairs, 31 based on Foata normal form. 9/932 useless extension candidates. Maximal degree in co-relation 5179. Up to 513 conditions per place. [2025-03-17 06:46:55,496 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 115 selfloop transitions, 42 changer transitions 0/158 dead transitions. [2025-03-17 06:46:55,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 158 transitions, 2622 flow [2025-03-17 06:46:55,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 06:46:55,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 06:46:55,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 64 transitions. [2025-03-17 06:46:55,498 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5818181818181818 [2025-03-17 06:46:55,498 INFO L175 Difference]: Start difference. First operand has 117 places, 122 transitions, 1924 flow. Second operand 5 states and 64 transitions. [2025-03-17 06:46:55,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 158 transitions, 2622 flow [2025-03-17 06:46:55,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 158 transitions, 2531 flow, removed 19 selfloop flow, removed 4 redundant places. [2025-03-17 06:46:55,530 INFO L231 Difference]: Finished difference. Result has 119 places, 124 transitions, 2039 flow [2025-03-17 06:46:55,530 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1779, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2039, PETRI_PLACES=119, PETRI_TRANSITIONS=124} [2025-03-17 06:46:55,531 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 95 predicate places. [2025-03-17 06:46:55,531 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 124 transitions, 2039 flow [2025-03-17 06:46:55,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 06:46:55,531 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:46:55,531 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:46:55,543 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-17 06:46:55,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:46:55,735 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:46:55,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:46:55,736 INFO L85 PathProgramCache]: Analyzing trace with hash 509790858, now seen corresponding path program 3 times [2025-03-17 06:46:55,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:46:55,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352618031] [2025-03-17 06:46:55,736 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 06:46:55,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:46:55,742 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 2 equivalence classes. [2025-03-17 06:46:55,743 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 06:46:55,746 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-17 06:46:55,746 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:55,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:46:55,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:46:55,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352618031] [2025-03-17 06:46:55,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352618031] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:46:55,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:46:55,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 06:46:55,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859871032] [2025-03-17 06:46:55,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:46:55,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:46:55,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:46:55,773 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:46:55,773 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 06:46:55,779 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:46:55,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 124 transitions, 2039 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 06:46:55,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:46:55,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:46:55,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:46:55,972 INFO L124 PetriNetUnfolderBase]: 458/828 cut-off events. [2025-03-17 06:46:55,973 INFO L125 PetriNetUnfolderBase]: For 12260/12260 co-relation queries the response was YES. [2025-03-17 06:46:55,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5296 conditions, 828 events. 458/828 cut-off events. For 12260/12260 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3877 event pairs, 70 based on Foata normal form. 7/835 useless extension candidates. Maximal degree in co-relation 4919. Up to 221 conditions per place. [2025-03-17 06:46:55,977 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 122 selfloop transitions, 35 changer transitions 5/163 dead transitions. [2025-03-17 06:46:55,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 163 transitions, 2648 flow [2025-03-17 06:46:55,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 06:46:55,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-17 06:46:55,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2025-03-17 06:46:55,979 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5284090909090909 [2025-03-17 06:46:55,979 INFO L175 Difference]: Start difference. First operand has 119 places, 124 transitions, 2039 flow. Second operand 8 states and 93 transitions. [2025-03-17 06:46:55,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 163 transitions, 2648 flow [2025-03-17 06:46:55,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 163 transitions, 2586 flow, removed 28 selfloop flow, removed 2 redundant places. [2025-03-17 06:46:55,999 INFO L231 Difference]: Finished difference. Result has 124 places, 117 transitions, 1948 flow [2025-03-17 06:46:55,999 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1917, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1948, PETRI_PLACES=124, PETRI_TRANSITIONS=117} [2025-03-17 06:46:55,999 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 100 predicate places. [2025-03-17 06:46:55,999 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 117 transitions, 1948 flow [2025-03-17 06:46:55,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 06:46:55,999 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:46:55,999 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:46:56,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-03-17 06:46:56,000 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:46:56,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:46:56,000 INFO L85 PathProgramCache]: Analyzing trace with hash -350491840, now seen corresponding path program 4 times [2025-03-17 06:46:56,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:46:56,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178226856] [2025-03-17 06:46:56,000 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 06:46:56,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:46:56,003 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-03-17 06:46:56,005 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 06:46:56,006 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 06:46:56,006 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:56,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:46:56,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:46:56,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178226856] [2025-03-17 06:46:56,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178226856] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:46:56,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986888401] [2025-03-17 06:46:56,041 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 06:46:56,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:46:56,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:46:56,043 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:46:56,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 06:46:56,068 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-03-17 06:46:56,076 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 06:46:56,076 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 06:46:56,076 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:56,077 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 06:46:56,078 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:46:56,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:46:56,089 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:46:56,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:46:56,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986888401] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-17 06:46:56,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-17 06:46:56,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2025-03-17 06:46:56,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457013527] [2025-03-17 06:46:56,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:46:56,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:46:56,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:46:56,115 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:46:56,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-17 06:46:56,118 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:46:56,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 117 transitions, 1948 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 06:46:56,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:46:56,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:46:56,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:46:56,263 INFO L124 PetriNetUnfolderBase]: 432/785 cut-off events. [2025-03-17 06:46:56,264 INFO L125 PetriNetUnfolderBase]: For 11145/11145 co-relation queries the response was YES. [2025-03-17 06:46:56,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4927 conditions, 785 events. 432/785 cut-off events. For 11145/11145 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3623 event pairs, 40 based on Foata normal form. 8/793 useless extension candidates. Maximal degree in co-relation 4736. Up to 301 conditions per place. [2025-03-17 06:46:56,271 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 112 selfloop transitions, 35 changer transitions 1/149 dead transitions. [2025-03-17 06:46:56,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 149 transitions, 2511 flow [2025-03-17 06:46:56,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 06:46:56,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 06:46:56,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 65 transitions. [2025-03-17 06:46:56,273 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2025-03-17 06:46:56,273 INFO L175 Difference]: Start difference. First operand has 124 places, 117 transitions, 1948 flow. Second operand 5 states and 65 transitions. [2025-03-17 06:46:56,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 149 transitions, 2511 flow [2025-03-17 06:46:56,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 149 transitions, 2456 flow, removed 13 selfloop flow, removed 3 redundant places. [2025-03-17 06:46:56,298 INFO L231 Difference]: Finished difference. Result has 124 places, 117 transitions, 1966 flow [2025-03-17 06:46:56,299 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1874, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1966, PETRI_PLACES=124, PETRI_TRANSITIONS=117} [2025-03-17 06:46:56,299 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 100 predicate places. [2025-03-17 06:46:56,299 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 117 transitions, 1966 flow [2025-03-17 06:46:56,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 06:46:56,300 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:46:56,300 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:46:56,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-17 06:46:56,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:46:56,501 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:46:56,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:46:56,502 INFO L85 PathProgramCache]: Analyzing trace with hash 124727321, now seen corresponding path program 4 times [2025-03-17 06:46:56,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:46:56,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949849205] [2025-03-17 06:46:56,502 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 06:46:56,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:46:56,505 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-03-17 06:46:56,507 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 06:46:56,508 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 06:46:56,508 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:56,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:46:56,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:46:56,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949849205] [2025-03-17 06:46:56,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949849205] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:46:56,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091745185] [2025-03-17 06:46:56,530 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 06:46:56,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:46:56,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:46:56,535 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:46:56,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-17 06:46:56,560 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-03-17 06:46:56,568 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 06:46:56,568 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 06:46:56,568 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:56,569 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 06:46:56,569 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:46:56,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:46:56,581 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:46:56,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:46:56,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091745185] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-17 06:46:56,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-17 06:46:56,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2025-03-17 06:46:56,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139801073] [2025-03-17 06:46:56,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:46:56,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:46:56,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:46:56,608 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:46:56,608 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-03-17 06:46:56,615 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:46:56,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 117 transitions, 1966 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 06:46:56,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:46:56,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:46:56,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:46:56,795 INFO L124 PetriNetUnfolderBase]: 453/835 cut-off events. [2025-03-17 06:46:56,795 INFO L125 PetriNetUnfolderBase]: For 11961/11961 co-relation queries the response was YES. [2025-03-17 06:46:56,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5079 conditions, 835 events. 453/835 cut-off events. For 11961/11961 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4003 event pairs, 90 based on Foata normal form. 9/844 useless extension candidates. Maximal degree in co-relation 4652. Up to 393 conditions per place. [2025-03-17 06:46:56,801 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 109 selfloop transitions, 48 changer transitions 2/160 dead transitions. [2025-03-17 06:46:56,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 160 transitions, 2663 flow [2025-03-17 06:46:56,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 06:46:56,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 06:46:56,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 82 transitions. [2025-03-17 06:46:56,806 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6212121212121212 [2025-03-17 06:46:56,806 INFO L175 Difference]: Start difference. First operand has 124 places, 117 transitions, 1966 flow. Second operand 6 states and 82 transitions. [2025-03-17 06:46:56,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 160 transitions, 2663 flow [2025-03-17 06:46:56,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 160 transitions, 2650 flow, removed 3 selfloop flow, removed 1 redundant places. [2025-03-17 06:46:56,835 INFO L231 Difference]: Finished difference. Result has 132 places, 124 transitions, 2265 flow [2025-03-17 06:46:56,835 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1953, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2265, PETRI_PLACES=132, PETRI_TRANSITIONS=124} [2025-03-17 06:46:56,836 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 108 predicate places. [2025-03-17 06:46:56,836 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 124 transitions, 2265 flow [2025-03-17 06:46:56,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 06:46:56,836 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:46:56,836 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:46:56,848 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-17 06:46:57,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2025-03-17 06:46:57,037 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:46:57,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:46:57,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1433553383, now seen corresponding path program 5 times [2025-03-17 06:46:57,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:46:57,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649464363] [2025-03-17 06:46:57,037 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 06:46:57,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:46:57,040 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-03-17 06:46:57,043 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 06:46:57,043 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 06:46:57,043 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:57,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:46:57,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:46:57,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649464363] [2025-03-17 06:46:57,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649464363] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:46:57,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:46:57,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 06:46:57,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034682516] [2025-03-17 06:46:57,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:46:57,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:46:57,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:46:57,066 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:46:57,066 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 06:46:57,068 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:46:57,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 124 transitions, 2265 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 06:46:57,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:46:57,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:46:57,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:46:57,229 INFO L124 PetriNetUnfolderBase]: 442/818 cut-off events. [2025-03-17 06:46:57,229 INFO L125 PetriNetUnfolderBase]: For 12774/12774 co-relation queries the response was YES. [2025-03-17 06:46:57,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5254 conditions, 818 events. 442/818 cut-off events. For 12774/12774 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3906 event pairs, 55 based on Foata normal form. 6/824 useless extension candidates. Maximal degree in co-relation 4900. Up to 222 conditions per place. [2025-03-17 06:46:57,237 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 111 selfloop transitions, 44 changer transitions 2/158 dead transitions. [2025-03-17 06:46:57,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 158 transitions, 2796 flow [2025-03-17 06:46:57,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 06:46:57,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-17 06:46:57,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2025-03-17 06:46:57,239 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5113636363636364 [2025-03-17 06:46:57,239 INFO L175 Difference]: Start difference. First operand has 132 places, 124 transitions, 2265 flow. Second operand 8 states and 90 transitions. [2025-03-17 06:46:57,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 158 transitions, 2796 flow [2025-03-17 06:46:57,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 158 transitions, 2748 flow, removed 24 selfloop flow, removed 0 redundant places. [2025-03-17 06:46:57,266 INFO L231 Difference]: Finished difference. Result has 139 places, 120 transitions, 2226 flow [2025-03-17 06:46:57,266 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2181, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2226, PETRI_PLACES=139, PETRI_TRANSITIONS=120} [2025-03-17 06:46:57,266 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 115 predicate places. [2025-03-17 06:46:57,267 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 120 transitions, 2226 flow [2025-03-17 06:46:57,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 06:46:57,267 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:46:57,267 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:46:57,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-03-17 06:46:57,267 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:46:57,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:46:57,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1067285013, now seen corresponding path program 6 times [2025-03-17 06:46:57,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:46:57,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135110214] [2025-03-17 06:46:57,268 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 06:46:57,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:46:57,270 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 18 statements into 2 equivalence classes. [2025-03-17 06:46:57,273 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 06:46:57,276 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-17 06:46:57,276 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:57,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:46:57,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:46:57,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135110214] [2025-03-17 06:46:57,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135110214] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:46:57,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:46:57,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 06:46:57,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163575574] [2025-03-17 06:46:57,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:46:57,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:46:57,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:46:57,293 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:46:57,293 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 06:46:57,294 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:46:57,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 120 transitions, 2226 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 06:46:57,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:46:57,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:46:57,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:46:57,428 INFO L124 PetriNetUnfolderBase]: 399/739 cut-off events. [2025-03-17 06:46:57,428 INFO L125 PetriNetUnfolderBase]: For 12619/12619 co-relation queries the response was YES. [2025-03-17 06:46:57,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4894 conditions, 739 events. 399/739 cut-off events. For 12619/12619 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3445 event pairs, 76 based on Foata normal form. 10/749 useless extension candidates. Maximal degree in co-relation 4567. Up to 432 conditions per place. [2025-03-17 06:46:57,432 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 80 selfloop transitions, 37 changer transitions 9/127 dead transitions. [2025-03-17 06:46:57,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 127 transitions, 2446 flow [2025-03-17 06:46:57,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 06:46:57,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 06:46:57,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 66 transitions. [2025-03-17 06:46:57,434 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2025-03-17 06:46:57,434 INFO L175 Difference]: Start difference. First operand has 139 places, 120 transitions, 2226 flow. Second operand 7 states and 66 transitions. [2025-03-17 06:46:57,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 127 transitions, 2446 flow [2025-03-17 06:46:57,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 127 transitions, 2236 flow, removed 21 selfloop flow, removed 6 redundant places. [2025-03-17 06:46:57,453 INFO L231 Difference]: Finished difference. Result has 139 places, 108 transitions, 1849 flow [2025-03-17 06:46:57,453 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1895, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1849, PETRI_PLACES=139, PETRI_TRANSITIONS=108} [2025-03-17 06:46:57,454 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 115 predicate places. [2025-03-17 06:46:57,454 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 108 transitions, 1849 flow [2025-03-17 06:46:57,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 06:46:57,454 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:46:57,454 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:46:57,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2025-03-17 06:46:57,454 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:46:57,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:46:57,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1055952392, now seen corresponding path program 5 times [2025-03-17 06:46:57,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:46:57,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348472768] [2025-03-17 06:46:57,455 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 06:46:57,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:46:57,460 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-03-17 06:46:57,461 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 06:46:57,461 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 06:46:57,461 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:57,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:46:57,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:46:57,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348472768] [2025-03-17 06:46:57,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348472768] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:46:57,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:46:57,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 06:46:57,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423461438] [2025-03-17 06:46:57,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:46:57,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:46:57,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:46:57,479 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:46:57,479 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 06:46:57,482 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:46:57,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 108 transitions, 1849 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 06:46:57,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:46:57,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:46:57,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:46:57,592 INFO L124 PetriNetUnfolderBase]: 328/611 cut-off events. [2025-03-17 06:46:57,594 INFO L125 PetriNetUnfolderBase]: For 9328/9328 co-relation queries the response was YES. [2025-03-17 06:46:57,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3906 conditions, 611 events. 328/611 cut-off events. For 9328/9328 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2681 event pairs, 38 based on Foata normal form. 14/625 useless extension candidates. Maximal degree in co-relation 3648. Up to 221 conditions per place. [2025-03-17 06:46:57,598 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 97 selfloop transitions, 23 changer transitions 3/124 dead transitions. [2025-03-17 06:46:57,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 124 transitions, 2176 flow [2025-03-17 06:46:57,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 06:46:57,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 06:46:57,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 67 transitions. [2025-03-17 06:46:57,599 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5075757575757576 [2025-03-17 06:46:57,599 INFO L175 Difference]: Start difference. First operand has 139 places, 108 transitions, 1849 flow. Second operand 6 states and 67 transitions. [2025-03-17 06:46:57,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 124 transitions, 2176 flow [2025-03-17 06:46:57,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 124 transitions, 2020 flow, removed 22 selfloop flow, removed 9 redundant places. [2025-03-17 06:46:57,615 INFO L231 Difference]: Finished difference. Result has 130 places, 95 transitions, 1537 flow [2025-03-17 06:46:57,615 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1548, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1537, PETRI_PLACES=130, PETRI_TRANSITIONS=95} [2025-03-17 06:46:57,616 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 106 predicate places. [2025-03-17 06:46:57,616 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 95 transitions, 1537 flow [2025-03-17 06:46:57,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 06:46:57,616 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:46:57,616 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:46:57,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2025-03-17 06:46:57,617 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:46:57,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:46:57,617 INFO L85 PathProgramCache]: Analyzing trace with hash -288384984, now seen corresponding path program 6 times [2025-03-17 06:46:57,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:46:57,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518236856] [2025-03-17 06:46:57,617 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 06:46:57,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:46:57,623 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 18 statements into 2 equivalence classes. [2025-03-17 06:46:57,625 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 06:46:57,625 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-17 06:46:57,625 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:57,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:46:57,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:46:57,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518236856] [2025-03-17 06:46:57,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518236856] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:46:57,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090880364] [2025-03-17 06:46:57,645 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 06:46:57,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:46:57,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:46:57,647 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:46:57,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-17 06:46:57,671 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 18 statements into 2 equivalence classes. [2025-03-17 06:46:57,679 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 06:46:57,679 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-17 06:46:57,679 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:57,680 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 06:46:57,680 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:46:57,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:46:57,686 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:46:57,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:46:57,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090880364] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-17 06:46:57,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-17 06:46:57,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 6 [2025-03-17 06:46:57,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352713945] [2025-03-17 06:46:57,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:46:57,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:46:57,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:46:57,706 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:46:57,706 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-17 06:46:57,708 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:46:57,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 95 transitions, 1537 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 06:46:57,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:46:57,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:46:57,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:46:57,814 INFO L124 PetriNetUnfolderBase]: 299/536 cut-off events. [2025-03-17 06:46:57,814 INFO L125 PetriNetUnfolderBase]: For 8077/8077 co-relation queries the response was YES. [2025-03-17 06:46:57,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3425 conditions, 536 events. 299/536 cut-off events. For 8077/8077 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2160 event pairs, 30 based on Foata normal form. 14/550 useless extension candidates. Maximal degree in co-relation 3306. Up to 343 conditions per place. [2025-03-17 06:46:57,819 INFO L140 encePairwiseOnDemand]: 17/22 looper letters, 66 selfloop transitions, 37 changer transitions 0/104 dead transitions. [2025-03-17 06:46:57,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 104 transitions, 1770 flow [2025-03-17 06:46:57,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 06:46:57,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 06:46:57,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 55 transitions. [2025-03-17 06:46:57,820 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2025-03-17 06:46:57,820 INFO L175 Difference]: Start difference. First operand has 130 places, 95 transitions, 1537 flow. Second operand 5 states and 55 transitions. [2025-03-17 06:46:57,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 104 transitions, 1770 flow [2025-03-17 06:46:57,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 104 transitions, 1656 flow, removed 11 selfloop flow, removed 10 redundant places. [2025-03-17 06:46:57,835 INFO L231 Difference]: Finished difference. Result has 116 places, 90 transitions, 1417 flow [2025-03-17 06:46:57,835 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1287, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1417, PETRI_PLACES=116, PETRI_TRANSITIONS=90} [2025-03-17 06:46:57,837 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 92 predicate places. [2025-03-17 06:46:57,837 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 90 transitions, 1417 flow [2025-03-17 06:46:57,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 06:46:57,837 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:46:57,838 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:46:57,850 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-17 06:46:58,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2025-03-17 06:46:58,038 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:46:58,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:46:58,039 INFO L85 PathProgramCache]: Analyzing trace with hash -636981092, now seen corresponding path program 1 times [2025-03-17 06:46:58,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:46:58,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564511502] [2025-03-17 06:46:58,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:46:58,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:46:58,042 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-17 06:46:58,043 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 06:46:58,043 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:46:58,043 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:58,144 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:46:58,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:46:58,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564511502] [2025-03-17 06:46:58,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564511502] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:46:58,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846250553] [2025-03-17 06:46:58,146 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:46:58,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:46:58,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:46:58,150 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:46:58,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-17 06:46:58,192 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-17 06:46:58,203 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 06:46:58,204 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:46:58,204 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:46:58,205 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-17 06:46:58,206 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:46:58,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:46:58,334 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:46:58,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:46:58,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846250553] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 06:46:58,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 06:46:58,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2025-03-17 06:46:58,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806136300] [2025-03-17 06:46:58,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 06:46:58,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-17 06:46:58,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:46:58,651 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-17 06:46:58,651 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2025-03-17 06:46:58,654 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:46:58,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 90 transitions, 1417 flow. Second operand has 23 states, 23 states have (on average 4.695652173913044) internal successors, (108), 23 states have internal predecessors, (108), 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 06:46:58,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:46:58,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:46:58,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:46:59,660 INFO L124 PetriNetUnfolderBase]: 694/1300 cut-off events. [2025-03-17 06:46:59,661 INFO L125 PetriNetUnfolderBase]: For 13805/13805 co-relation queries the response was YES. [2025-03-17 06:46:59,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6959 conditions, 1300 events. 694/1300 cut-off events. For 13805/13805 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 6982 event pairs, 29 based on Foata normal form. 2/1302 useless extension candidates. Maximal degree in co-relation 6811. Up to 242 conditions per place. [2025-03-17 06:46:59,669 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 129 selfloop transitions, 87 changer transitions 68/285 dead transitions. [2025-03-17 06:46:59,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 285 transitions, 3819 flow [2025-03-17 06:46:59,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2025-03-17 06:46:59,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2025-03-17 06:46:59,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 310 transitions. [2025-03-17 06:46:59,672 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39141414141414144 [2025-03-17 06:46:59,673 INFO L175 Difference]: Start difference. First operand has 116 places, 90 transitions, 1417 flow. Second operand 36 states and 310 transitions. [2025-03-17 06:46:59,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 285 transitions, 3819 flow [2025-03-17 06:46:59,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 285 transitions, 3704 flow, removed 29 selfloop flow, removed 3 redundant places. [2025-03-17 06:46:59,695 INFO L231 Difference]: Finished difference. Result has 163 places, 129 transitions, 2315 flow [2025-03-17 06:46:59,695 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1373, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=2315, PETRI_PLACES=163, PETRI_TRANSITIONS=129} [2025-03-17 06:46:59,696 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 139 predicate places. [2025-03-17 06:46:59,696 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 129 transitions, 2315 flow [2025-03-17 06:46:59,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.695652173913044) internal successors, (108), 23 states have internal predecessors, (108), 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 06:46:59,696 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:46:59,696 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:46:59,706 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-17 06:46:59,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:46:59,897 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:46:59,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:46:59,897 INFO L85 PathProgramCache]: Analyzing trace with hash 606883440, now seen corresponding path program 2 times [2025-03-17 06:46:59,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:46:59,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815068384] [2025-03-17 06:46:59,897 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 06:46:59,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:46:59,902 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-17 06:46:59,905 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 06:46:59,906 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 06:46:59,906 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:00,001 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:00,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:47:00,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815068384] [2025-03-17 06:47:00,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815068384] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:47:00,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058384334] [2025-03-17 06:47:00,001 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 06:47:00,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:47:00,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:47:00,003 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:47:00,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-17 06:47:00,027 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-17 06:47:00,035 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 06:47:00,035 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 06:47:00,035 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:00,036 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-17 06:47:00,037 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:47:00,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:00,142 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:47:00,313 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:00,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058384334] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 06:47:00,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 06:47:00,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2025-03-17 06:47:00,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261260649] [2025-03-17 06:47:00,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 06:47:00,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-17 06:47:00,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:47:00,314 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-17 06:47:00,314 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2025-03-17 06:47:00,323 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:47:00,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 129 transitions, 2315 flow. Second operand has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:47:00,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:47:00,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:47:00,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:47:00,744 INFO L124 PetriNetUnfolderBase]: 751/1463 cut-off events. [2025-03-17 06:47:00,744 INFO L125 PetriNetUnfolderBase]: For 18258/18258 co-relation queries the response was YES. [2025-03-17 06:47:00,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8058 conditions, 1463 events. 751/1463 cut-off events. For 18258/18258 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 8392 event pairs, 98 based on Foata normal form. 3/1466 useless extension candidates. Maximal degree in co-relation 7913. Up to 594 conditions per place. [2025-03-17 06:47:00,756 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 102 selfloop transitions, 99 changer transitions 12/214 dead transitions. [2025-03-17 06:47:00,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 214 transitions, 3752 flow [2025-03-17 06:47:00,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-17 06:47:00,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-17 06:47:00,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 121 transitions. [2025-03-17 06:47:00,757 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4230769230769231 [2025-03-17 06:47:00,757 INFO L175 Difference]: Start difference. First operand has 163 places, 129 transitions, 2315 flow. Second operand 13 states and 121 transitions. [2025-03-17 06:47:00,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 214 transitions, 3752 flow [2025-03-17 06:47:00,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 214 transitions, 3064 flow, removed 174 selfloop flow, removed 20 redundant places. [2025-03-17 06:47:00,807 INFO L231 Difference]: Finished difference. Result has 149 places, 161 transitions, 2505 flow [2025-03-17 06:47:00,807 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1814, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2505, PETRI_PLACES=149, PETRI_TRANSITIONS=161} [2025-03-17 06:47:00,808 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 125 predicate places. [2025-03-17 06:47:00,808 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 161 transitions, 2505 flow [2025-03-17 06:47:00,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:47:00,808 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:47:00,808 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:47:00,816 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-17 06:47:01,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2025-03-17 06:47:01,009 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:47:01,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:47:01,009 INFO L85 PathProgramCache]: Analyzing trace with hash 2101927212, now seen corresponding path program 3 times [2025-03-17 06:47:01,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:47:01,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705948762] [2025-03-17 06:47:01,009 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 06:47:01,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:47:01,012 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-03-17 06:47:01,014 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 06:47:01,014 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-17 06:47:01,014 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:01,101 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:01,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:47:01,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705948762] [2025-03-17 06:47:01,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705948762] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:47:01,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538678408] [2025-03-17 06:47:01,101 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 06:47:01,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:47:01,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:47:01,104 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:47:01,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-17 06:47:01,132 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-03-17 06:47:01,142 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 06:47:01,142 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-17 06:47:01,142 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:01,143 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-17 06:47:01,144 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:47:01,253 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:01,253 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:47:01,410 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:01,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538678408] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 06:47:01,410 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 06:47:01,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2025-03-17 06:47:01,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535604806] [2025-03-17 06:47:01,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 06:47:01,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-17 06:47:01,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:47:01,411 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-17 06:47:01,411 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2025-03-17 06:47:01,432 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:47:01,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 161 transitions, 2505 flow. Second operand has 23 states, 23 states have (on average 4.391304347826087) internal successors, (101), 23 states have internal predecessors, (101), 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 06:47:01,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:47:01,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:47:01,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:47:02,188 INFO L124 PetriNetUnfolderBase]: 897/1738 cut-off events. [2025-03-17 06:47:02,188 INFO L125 PetriNetUnfolderBase]: For 18448/18448 co-relation queries the response was YES. [2025-03-17 06:47:02,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9031 conditions, 1738 events. 897/1738 cut-off events. For 18448/18448 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 10325 event pairs, 81 based on Foata normal form. 6/1744 useless extension candidates. Maximal degree in co-relation 8904. Up to 438 conditions per place. [2025-03-17 06:47:02,199 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 89 selfloop transitions, 144 changer transitions 27/261 dead transitions. [2025-03-17 06:47:02,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 261 transitions, 4195 flow [2025-03-17 06:47:02,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-17 06:47:02,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-03-17 06:47:02,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 154 transitions. [2025-03-17 06:47:02,201 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2025-03-17 06:47:02,201 INFO L175 Difference]: Start difference. First operand has 149 places, 161 transitions, 2505 flow. Second operand 18 states and 154 transitions. [2025-03-17 06:47:02,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 261 transitions, 4195 flow [2025-03-17 06:47:02,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 261 transitions, 4062 flow, removed 33 selfloop flow, removed 4 redundant places. [2025-03-17 06:47:02,242 INFO L231 Difference]: Finished difference. Result has 168 places, 196 transitions, 3453 flow [2025-03-17 06:47:02,242 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2414, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3453, PETRI_PLACES=168, PETRI_TRANSITIONS=196} [2025-03-17 06:47:02,243 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 144 predicate places. [2025-03-17 06:47:02,243 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 196 transitions, 3453 flow [2025-03-17 06:47:02,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.391304347826087) internal successors, (101), 23 states have internal predecessors, (101), 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 06:47:02,243 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:47:02,243 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:47:02,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-17 06:47:02,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:47:02,444 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:47:02,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:47:02,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1254363242, now seen corresponding path program 4 times [2025-03-17 06:47:02,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:47:02,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589346342] [2025-03-17 06:47:02,444 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 06:47:02,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:47:02,447 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-03-17 06:47:02,449 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 06:47:02,449 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 06:47:02,449 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:02,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:02,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:47:02,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589346342] [2025-03-17 06:47:02,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589346342] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:47:02,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391047753] [2025-03-17 06:47:02,573 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 06:47:02,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:47:02,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:47:02,575 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:47:02,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-17 06:47:02,600 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-03-17 06:47:02,610 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 06:47:02,610 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 06:47:02,610 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:02,610 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-17 06:47:02,611 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:47:02,727 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:02,727 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:47:02,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:02,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391047753] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 06:47:02,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 06:47:02,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2025-03-17 06:47:02,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774966153] [2025-03-17 06:47:02,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 06:47:02,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-17 06:47:02,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:47:02,940 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-17 06:47:02,940 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2025-03-17 06:47:02,948 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:47:02,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 196 transitions, 3453 flow. Second operand has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:47:02,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:47:02,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:47:02,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:47:03,488 INFO L124 PetriNetUnfolderBase]: 834/1627 cut-off events. [2025-03-17 06:47:03,488 INFO L125 PetriNetUnfolderBase]: For 20714/20714 co-relation queries the response was YES. [2025-03-17 06:47:03,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9404 conditions, 1627 events. 834/1627 cut-off events. For 20714/20714 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 9614 event pairs, 97 based on Foata normal form. 4/1631 useless extension candidates. Maximal degree in co-relation 9271. Up to 523 conditions per place. [2025-03-17 06:47:03,497 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 83 selfloop transitions, 139 changer transitions 16/239 dead transitions. [2025-03-17 06:47:03,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 239 transitions, 4251 flow [2025-03-17 06:47:03,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-17 06:47:03,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-03-17 06:47:03,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 143 transitions. [2025-03-17 06:47:03,498 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38235294117647056 [2025-03-17 06:47:03,498 INFO L175 Difference]: Start difference. First operand has 168 places, 196 transitions, 3453 flow. Second operand 17 states and 143 transitions. [2025-03-17 06:47:03,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 239 transitions, 4251 flow [2025-03-17 06:47:03,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 239 transitions, 4020 flow, removed 85 selfloop flow, removed 5 redundant places. [2025-03-17 06:47:03,548 INFO L231 Difference]: Finished difference. Result has 179 places, 191 transitions, 3416 flow [2025-03-17 06:47:03,549 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3232, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3416, PETRI_PLACES=179, PETRI_TRANSITIONS=191} [2025-03-17 06:47:03,549 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 155 predicate places. [2025-03-17 06:47:03,549 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 191 transitions, 3416 flow [2025-03-17 06:47:03,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:47:03,549 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:47:03,549 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:47:03,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-03-17 06:47:03,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2025-03-17 06:47:03,750 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:47:03,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:47:03,751 INFO L85 PathProgramCache]: Analyzing trace with hash 806496560, now seen corresponding path program 5 times [2025-03-17 06:47:03,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:47:03,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780421257] [2025-03-17 06:47:03,751 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 06:47:03,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:47:03,754 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-17 06:47:03,759 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 06:47:03,759 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 06:47:03,759 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:03,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:03,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:47:03,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780421257] [2025-03-17 06:47:03,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780421257] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:47:03,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505752639] [2025-03-17 06:47:03,832 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 06:47:03,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:47:03,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:47:03,837 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:47:03,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-17 06:47:03,862 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-17 06:47:03,871 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 06:47:03,871 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 06:47:03,871 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:03,872 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-17 06:47:03,873 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:47:03,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:03,935 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 06:47:03,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505752639] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:47:03,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 06:47:03,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 11 [2025-03-17 06:47:03,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626689261] [2025-03-17 06:47:03,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:47:03,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 06:47:03,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:47:03,935 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 06:47:03,935 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2025-03-17 06:47:03,944 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:47:03,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 191 transitions, 3416 flow. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:47:03,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:47:03,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:47:03,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:47:04,153 INFO L124 PetriNetUnfolderBase]: 776/1489 cut-off events. [2025-03-17 06:47:04,153 INFO L125 PetriNetUnfolderBase]: For 20201/20201 co-relation queries the response was YES. [2025-03-17 06:47:04,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8985 conditions, 1489 events. 776/1489 cut-off events. For 20201/20201 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 8321 event pairs, 175 based on Foata normal form. 2/1491 useless extension candidates. Maximal degree in co-relation 8859. Up to 997 conditions per place. [2025-03-17 06:47:04,162 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 118 selfloop transitions, 55 changer transitions 47/221 dead transitions. [2025-03-17 06:47:04,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 221 transitions, 4153 flow [2025-03-17 06:47:04,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 06:47:04,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-17 06:47:04,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 84 transitions. [2025-03-17 06:47:04,163 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2025-03-17 06:47:04,163 INFO L175 Difference]: Start difference. First operand has 179 places, 191 transitions, 3416 flow. Second operand 9 states and 84 transitions. [2025-03-17 06:47:04,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 221 transitions, 4153 flow [2025-03-17 06:47:04,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 221 transitions, 3924 flow, removed 5 selfloop flow, removed 13 redundant places. [2025-03-17 06:47:04,212 INFO L231 Difference]: Finished difference. Result has 173 places, 164 transitions, 2764 flow [2025-03-17 06:47:04,213 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3196, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2764, PETRI_PLACES=173, PETRI_TRANSITIONS=164} [2025-03-17 06:47:04,213 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 149 predicate places. [2025-03-17 06:47:04,213 INFO L471 AbstractCegarLoop]: Abstraction has has 173 places, 164 transitions, 2764 flow [2025-03-17 06:47:04,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:47:04,214 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:47:04,214 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:47:04,220 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-03-17 06:47:04,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2025-03-17 06:47:04,414 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:47:04,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:47:04,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1373425960, now seen corresponding path program 6 times [2025-03-17 06:47:04,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:47:04,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210545566] [2025-03-17 06:47:04,415 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 06:47:04,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:47:04,417 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 2 equivalence classes. [2025-03-17 06:47:04,419 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 06:47:04,419 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-17 06:47:04,419 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:04,494 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:04,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:47:04,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210545566] [2025-03-17 06:47:04,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210545566] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:47:04,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751826323] [2025-03-17 06:47:04,494 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 06:47:04,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:47:04,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:47:04,496 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:47:04,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-17 06:47:04,523 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 2 equivalence classes. [2025-03-17 06:47:04,532 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 06:47:04,532 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-17 06:47:04,532 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:04,533 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-17 06:47:04,533 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:47:04,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:04,623 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:47:04,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:04,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751826323] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 06:47:04,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 06:47:04,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2025-03-17 06:47:04,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106564449] [2025-03-17 06:47:04,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 06:47:04,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-17 06:47:04,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:47:04,815 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-17 06:47:04,815 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2025-03-17 06:47:04,819 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:47:04,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 164 transitions, 2764 flow. Second operand has 23 states, 23 states have (on average 4.521739130434782) internal successors, (104), 23 states have internal predecessors, (104), 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 06:47:04,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:47:04,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:47:04,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:47:05,241 INFO L124 PetriNetUnfolderBase]: 737/1456 cut-off events. [2025-03-17 06:47:05,241 INFO L125 PetriNetUnfolderBase]: For 17812/17812 co-relation queries the response was YES. [2025-03-17 06:47:05,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7913 conditions, 1456 events. 737/1456 cut-off events. For 17812/17812 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 8424 event pairs, 111 based on Foata normal form. 2/1458 useless extension candidates. Maximal degree in co-relation 7777. Up to 647 conditions per place. [2025-03-17 06:47:05,251 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 105 selfloop transitions, 93 changer transitions 20/219 dead transitions. [2025-03-17 06:47:05,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 219 transitions, 3697 flow [2025-03-17 06:47:05,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-17 06:47:05,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-03-17 06:47:05,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 124 transitions. [2025-03-17 06:47:05,254 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4025974025974026 [2025-03-17 06:47:05,254 INFO L175 Difference]: Start difference. First operand has 173 places, 164 transitions, 2764 flow. Second operand 14 states and 124 transitions. [2025-03-17 06:47:05,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 219 transitions, 3697 flow [2025-03-17 06:47:05,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 219 transitions, 3314 flow, removed 29 selfloop flow, removed 20 redundant places. [2025-03-17 06:47:05,317 INFO L231 Difference]: Finished difference. Result has 157 places, 159 transitions, 2558 flow [2025-03-17 06:47:05,318 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2423, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2558, PETRI_PLACES=157, PETRI_TRANSITIONS=159} [2025-03-17 06:47:05,318 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 133 predicate places. [2025-03-17 06:47:05,318 INFO L471 AbstractCegarLoop]: Abstraction has has 157 places, 159 transitions, 2558 flow [2025-03-17 06:47:05,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.521739130434782) internal successors, (104), 23 states have internal predecessors, (104), 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 06:47:05,318 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:47:05,318 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:47:05,325 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-17 06:47:05,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2025-03-17 06:47:05,519 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:47:05,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:47:05,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1926423850, now seen corresponding path program 7 times [2025-03-17 06:47:05,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:47:05,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258341458] [2025-03-17 06:47:05,520 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-17 06:47:05,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:47:05,522 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-17 06:47:05,523 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 06:47:05,523 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:47:05,523 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:05,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:05,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:47:05,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258341458] [2025-03-17 06:47:05,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258341458] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:47:05,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157678593] [2025-03-17 06:47:05,605 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-17 06:47:05,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:47:05,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:47:05,607 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:47:05,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-17 06:47:05,639 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-17 06:47:05,649 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 06:47:05,650 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:47:05,650 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:05,651 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-17 06:47:05,651 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:47:05,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:05,726 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:47:05,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:05,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157678593] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 06:47:05,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 06:47:05,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2025-03-17 06:47:05,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812845709] [2025-03-17 06:47:05,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 06:47:05,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-03-17 06:47:05,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:47:05,948 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-03-17 06:47:05,949 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2025-03-17 06:47:05,957 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:47:05,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 159 transitions, 2558 flow. Second operand has 20 states, 20 states have (on average 4.5) internal successors, (90), 20 states have internal predecessors, (90), 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 06:47:05,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:47:05,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:47:05,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:47:06,733 INFO L124 PetriNetUnfolderBase]: 1010/1950 cut-off events. [2025-03-17 06:47:06,733 INFO L125 PetriNetUnfolderBase]: For 22631/22631 co-relation queries the response was YES. [2025-03-17 06:47:06,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11051 conditions, 1950 events. 1010/1950 cut-off events. For 22631/22631 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 11763 event pairs, 44 based on Foata normal form. 27/1977 useless extension candidates. Maximal degree in co-relation 10902. Up to 466 conditions per place. [2025-03-17 06:47:06,745 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 110 selfloop transitions, 206 changer transitions 12/329 dead transitions. [2025-03-17 06:47:06,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 329 transitions, 5542 flow [2025-03-17 06:47:06,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-03-17 06:47:06,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2025-03-17 06:47:06,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 219 transitions. [2025-03-17 06:47:06,747 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3555194805194805 [2025-03-17 06:47:06,747 INFO L175 Difference]: Start difference. First operand has 157 places, 159 transitions, 2558 flow. Second operand 28 states and 219 transitions. [2025-03-17 06:47:06,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 329 transitions, 5542 flow [2025-03-17 06:47:06,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 329 transitions, 5364 flow, removed 20 selfloop flow, removed 8 redundant places. [2025-03-17 06:47:06,794 INFO L231 Difference]: Finished difference. Result has 181 places, 266 transitions, 5073 flow [2025-03-17 06:47:06,794 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2463, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=5073, PETRI_PLACES=181, PETRI_TRANSITIONS=266} [2025-03-17 06:47:06,794 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 157 predicate places. [2025-03-17 06:47:06,794 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 266 transitions, 5073 flow [2025-03-17 06:47:06,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.5) internal successors, (90), 20 states have internal predecessors, (90), 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 06:47:06,795 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:47:06,795 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:47:06,800 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-03-17 06:47:06,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2025-03-17 06:47:06,995 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:47:06,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:47:06,996 INFO L85 PathProgramCache]: Analyzing trace with hash -125343936, now seen corresponding path program 8 times [2025-03-17 06:47:06,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:47:06,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816721536] [2025-03-17 06:47:06,996 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 06:47:06,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:47:06,998 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-17 06:47:07,000 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 06:47:07,000 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 06:47:07,000 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:07,080 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:07,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:47:07,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816721536] [2025-03-17 06:47:07,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816721536] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:47:07,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401213784] [2025-03-17 06:47:07,081 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 06:47:07,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:47:07,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:47:07,083 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:47:07,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-17 06:47:07,108 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-17 06:47:07,116 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 06:47:07,116 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 06:47:07,116 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:07,117 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-17 06:47:07,117 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:47:07,196 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:07,196 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:47:07,374 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:07,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401213784] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 06:47:07,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 06:47:07,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2025-03-17 06:47:07,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260496663] [2025-03-17 06:47:07,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 06:47:07,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-03-17 06:47:07,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:47:07,375 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-03-17 06:47:07,375 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2025-03-17 06:47:07,400 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:47:07,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 266 transitions, 5073 flow. Second operand has 22 states, 22 states have (on average 4.5) internal successors, (99), 22 states have internal predecessors, (99), 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 06:47:07,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:47:07,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:47:07,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:47:07,918 INFO L124 PetriNetUnfolderBase]: 1195/2292 cut-off events. [2025-03-17 06:47:07,918 INFO L125 PetriNetUnfolderBase]: For 33056/33056 co-relation queries the response was YES. [2025-03-17 06:47:07,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15093 conditions, 2292 events. 1195/2292 cut-off events. For 33056/33056 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 14360 event pairs, 196 based on Foata normal form. 2/2294 useless extension candidates. Maximal degree in co-relation 14939. Up to 1273 conditions per place. [2025-03-17 06:47:07,932 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 170 selfloop transitions, 197 changer transitions 16/384 dead transitions. [2025-03-17 06:47:07,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 384 transitions, 7913 flow [2025-03-17 06:47:07,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-17 06:47:07,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-17 06:47:07,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 112 transitions. [2025-03-17 06:47:07,933 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3916083916083916 [2025-03-17 06:47:07,933 INFO L175 Difference]: Start difference. First operand has 181 places, 266 transitions, 5073 flow. Second operand 13 states and 112 transitions. [2025-03-17 06:47:07,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 384 transitions, 7913 flow [2025-03-17 06:47:08,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 384 transitions, 7055 flow, removed 331 selfloop flow, removed 7 redundant places. [2025-03-17 06:47:08,065 INFO L231 Difference]: Finished difference. Result has 189 places, 320 transitions, 6138 flow [2025-03-17 06:47:08,066 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=4518, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6138, PETRI_PLACES=189, PETRI_TRANSITIONS=320} [2025-03-17 06:47:08,066 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 165 predicate places. [2025-03-17 06:47:08,066 INFO L471 AbstractCegarLoop]: Abstraction has has 189 places, 320 transitions, 6138 flow [2025-03-17 06:47:08,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.5) internal successors, (99), 22 states have internal predecessors, (99), 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 06:47:08,066 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:47:08,066 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:47:08,072 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-03-17 06:47:08,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:47:08,267 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:47:08,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:47:08,267 INFO L85 PathProgramCache]: Analyzing trace with hash -643388842, now seen corresponding path program 9 times [2025-03-17 06:47:08,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:47:08,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054939354] [2025-03-17 06:47:08,267 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 06:47:08,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:47:08,270 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-03-17 06:47:08,271 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 06:47:08,271 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-17 06:47:08,272 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:08,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:08,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:47:08,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054939354] [2025-03-17 06:47:08,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054939354] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:47:08,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668007546] [2025-03-17 06:47:08,347 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 06:47:08,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:47:08,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:47:08,349 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:47:08,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-17 06:47:08,373 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-03-17 06:47:08,380 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 06:47:08,381 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-17 06:47:08,381 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:08,381 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-17 06:47:08,383 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:47:08,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:08,440 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:47:08,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:08,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668007546] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 06:47:08,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 06:47:08,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 18 [2025-03-17 06:47:08,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419713898] [2025-03-17 06:47:08,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 06:47:08,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-17 06:47:08,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:47:08,700 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-17 06:47:08,700 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2025-03-17 06:47:08,712 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:47:08,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 320 transitions, 6138 flow. Second operand has 19 states, 19 states have (on average 4.526315789473684) internal successors, (86), 19 states have internal predecessors, (86), 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 06:47:08,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:47:08,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:47:08,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:47:09,385 INFO L124 PetriNetUnfolderBase]: 1232/2394 cut-off events. [2025-03-17 06:47:09,386 INFO L125 PetriNetUnfolderBase]: For 34018/34018 co-relation queries the response was YES. [2025-03-17 06:47:09,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15407 conditions, 2394 events. 1232/2394 cut-off events. For 34018/34018 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 15517 event pairs, 60 based on Foata normal form. 50/2444 useless extension candidates. Maximal degree in co-relation 15258. Up to 502 conditions per place. [2025-03-17 06:47:09,398 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 97 selfloop transitions, 243 changer transitions 49/390 dead transitions. [2025-03-17 06:47:09,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 390 transitions, 7570 flow [2025-03-17 06:47:09,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-03-17 06:47:09,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2025-03-17 06:47:09,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 193 transitions. [2025-03-17 06:47:09,399 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3509090909090909 [2025-03-17 06:47:09,399 INFO L175 Difference]: Start difference. First operand has 189 places, 320 transitions, 6138 flow. Second operand 25 states and 193 transitions. [2025-03-17 06:47:09,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 390 transitions, 7570 flow [2025-03-17 06:47:09,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 390 transitions, 7348 flow, removed 7 selfloop flow, removed 9 redundant places. [2025-03-17 06:47:09,501 INFO L231 Difference]: Finished difference. Result has 208 places, 305 transitions, 6249 flow [2025-03-17 06:47:09,502 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=5735, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=219, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=6249, PETRI_PLACES=208, PETRI_TRANSITIONS=305} [2025-03-17 06:47:09,502 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 184 predicate places. [2025-03-17 06:47:09,502 INFO L471 AbstractCegarLoop]: Abstraction has has 208 places, 305 transitions, 6249 flow [2025-03-17 06:47:09,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.526315789473684) internal successors, (86), 19 states have internal predecessors, (86), 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 06:47:09,502 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:47:09,502 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:47:09,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-03-17 06:47:09,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2025-03-17 06:47:09,703 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:47:09,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:47:09,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1570501866, now seen corresponding path program 10 times [2025-03-17 06:47:09,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:47:09,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060269500] [2025-03-17 06:47:09,703 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 06:47:09,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:47:09,705 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-03-17 06:47:09,707 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 06:47:09,707 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 06:47:09,707 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:09,782 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:09,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:47:09,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060269500] [2025-03-17 06:47:09,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060269500] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:47:09,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593349965] [2025-03-17 06:47:09,783 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 06:47:09,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:47:09,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:47:09,785 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:47:09,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-17 06:47:09,810 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-03-17 06:47:09,819 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 06:47:09,819 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 06:47:09,819 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:09,820 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-17 06:47:09,820 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:47:09,915 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:09,916 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:47:10,096 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:10,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593349965] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 06:47:10,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 06:47:10,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2025-03-17 06:47:10,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559174340] [2025-03-17 06:47:10,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 06:47:10,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-17 06:47:10,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:47:10,097 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-17 06:47:10,097 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=463, Unknown=0, NotChecked=0, Total=552 [2025-03-17 06:47:10,103 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:47:10,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 305 transitions, 6249 flow. Second operand has 24 states, 24 states have (on average 4.458333333333333) internal successors, (107), 24 states have internal predecessors, (107), 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 06:47:10,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:47:10,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:47:10,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:47:10,874 INFO L124 PetriNetUnfolderBase]: 1617/3160 cut-off events. [2025-03-17 06:47:10,874 INFO L125 PetriNetUnfolderBase]: For 46796/46796 co-relation queries the response was YES. [2025-03-17 06:47:10,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21152 conditions, 3160 events. 1617/3160 cut-off events. For 46796/46796 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 21858 event pairs, 151 based on Foata normal form. 17/3177 useless extension candidates. Maximal degree in co-relation 20994. Up to 957 conditions per place. [2025-03-17 06:47:10,895 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 141 selfloop transitions, 156 changer transitions 197/495 dead transitions. [2025-03-17 06:47:10,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 495 transitions, 10441 flow [2025-03-17 06:47:10,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-17 06:47:10,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-03-17 06:47:10,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 169 transitions. [2025-03-17 06:47:10,896 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3658008658008658 [2025-03-17 06:47:10,896 INFO L175 Difference]: Start difference. First operand has 208 places, 305 transitions, 6249 flow. Second operand 21 states and 169 transitions. [2025-03-17 06:47:10,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 495 transitions, 10441 flow [2025-03-17 06:47:11,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 495 transitions, 9914 flow, removed 61 selfloop flow, removed 17 redundant places. [2025-03-17 06:47:11,099 INFO L231 Difference]: Finished difference. Result has 207 places, 251 transitions, 5005 flow [2025-03-17 06:47:11,099 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=5907, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=5005, PETRI_PLACES=207, PETRI_TRANSITIONS=251} [2025-03-17 06:47:11,100 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 183 predicate places. [2025-03-17 06:47:11,101 INFO L471 AbstractCegarLoop]: Abstraction has has 207 places, 251 transitions, 5005 flow [2025-03-17 06:47:11,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.458333333333333) internal successors, (107), 24 states have internal predecessors, (107), 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 06:47:11,101 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:47:11,101 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:47:11,108 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-03-17 06:47:11,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2025-03-17 06:47:11,301 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:47:11,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:47:11,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1319215632, now seen corresponding path program 11 times [2025-03-17 06:47:11,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:47:11,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252678153] [2025-03-17 06:47:11,302 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 06:47:11,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:47:11,304 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-17 06:47:11,305 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 06:47:11,306 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 06:47:11,306 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:11,362 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:11,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:47:11,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252678153] [2025-03-17 06:47:11,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252678153] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:47:11,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489718164] [2025-03-17 06:47:11,362 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 06:47:11,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:47:11,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:47:11,364 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:47:11,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-17 06:47:11,385 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-17 06:47:11,394 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 06:47:11,394 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 06:47:11,394 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:11,394 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-17 06:47:11,395 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:47:11,453 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:11,453 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 06:47:11,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489718164] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:47:11,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 06:47:11,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 12 [2025-03-17 06:47:11,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761247775] [2025-03-17 06:47:11,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:47:11,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 06:47:11,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:47:11,456 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 06:47:11,456 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2025-03-17 06:47:11,465 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:47:11,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 251 transitions, 5005 flow. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:47:11,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:47:11,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:47:11,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:47:11,755 INFO L124 PetriNetUnfolderBase]: 983/1971 cut-off events. [2025-03-17 06:47:11,755 INFO L125 PetriNetUnfolderBase]: For 28516/28516 co-relation queries the response was YES. [2025-03-17 06:47:11,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12890 conditions, 1971 events. 983/1971 cut-off events. For 28516/28516 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 12589 event pairs, 156 based on Foata normal form. 2/1973 useless extension candidates. Maximal degree in co-relation 12729. Up to 1192 conditions per place. [2025-03-17 06:47:11,772 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 148 selfloop transitions, 125 changer transitions 21/295 dead transitions. [2025-03-17 06:47:11,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 295 transitions, 6215 flow [2025-03-17 06:47:11,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 06:47:11,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-17 06:47:11,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 81 transitions. [2025-03-17 06:47:11,774 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2025-03-17 06:47:11,774 INFO L175 Difference]: Start difference. First operand has 207 places, 251 transitions, 5005 flow. Second operand 9 states and 81 transitions. [2025-03-17 06:47:11,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 295 transitions, 6215 flow [2025-03-17 06:47:11,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 295 transitions, 5748 flow, removed 50 selfloop flow, removed 20 redundant places. [2025-03-17 06:47:11,875 INFO L231 Difference]: Finished difference. Result has 190 places, 260 transitions, 5156 flow [2025-03-17 06:47:11,875 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=4570, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5156, PETRI_PLACES=190, PETRI_TRANSITIONS=260} [2025-03-17 06:47:11,875 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 166 predicate places. [2025-03-17 06:47:11,875 INFO L471 AbstractCegarLoop]: Abstraction has has 190 places, 260 transitions, 5156 flow [2025-03-17 06:47:11,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:47:11,875 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:47:11,876 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:47:11,883 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-03-17 06:47:12,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2025-03-17 06:47:12,076 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:47:12,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:47:12,077 INFO L85 PathProgramCache]: Analyzing trace with hash 297532142, now seen corresponding path program 12 times [2025-03-17 06:47:12,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:47:12,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281899425] [2025-03-17 06:47:12,077 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 06:47:12,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:47:12,081 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 2 equivalence classes. [2025-03-17 06:47:12,085 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 06:47:12,086 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-17 06:47:12,086 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:12,205 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:12,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:47:12,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281899425] [2025-03-17 06:47:12,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281899425] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:47:12,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483568647] [2025-03-17 06:47:12,205 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 06:47:12,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:47:12,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:47:12,207 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:47:12,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-17 06:47:12,229 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 2 equivalence classes. [2025-03-17 06:47:12,237 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 06:47:12,237 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-17 06:47:12,237 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:12,237 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-17 06:47:12,238 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:47:12,338 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:12,338 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:47:12,586 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:12,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483568647] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 06:47:12,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 06:47:12,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2025-03-17 06:47:12,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987529604] [2025-03-17 06:47:12,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 06:47:12,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-17 06:47:12,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:47:12,587 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-17 06:47:12,587 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2025-03-17 06:47:12,594 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:47:12,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 260 transitions, 5156 flow. Second operand has 24 states, 24 states have (on average 4.625) internal successors, (111), 24 states have internal predecessors, (111), 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 06:47:12,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:47:12,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:47:12,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:47:13,367 INFO L124 PetriNetUnfolderBase]: 1095/2194 cut-off events. [2025-03-17 06:47:13,367 INFO L125 PetriNetUnfolderBase]: For 30763/30763 co-relation queries the response was YES. [2025-03-17 06:47:13,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14400 conditions, 2194 events. 1095/2194 cut-off events. For 30763/30763 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 14165 event pairs, 186 based on Foata normal form. 20/2214 useless extension candidates. Maximal degree in co-relation 14238. Up to 1009 conditions per place. [2025-03-17 06:47:13,381 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 163 selfloop transitions, 137 changer transitions 72/373 dead transitions. [2025-03-17 06:47:13,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 373 transitions, 7546 flow [2025-03-17 06:47:13,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-03-17 06:47:13,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2025-03-17 06:47:13,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 196 transitions. [2025-03-17 06:47:13,381 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3563636363636364 [2025-03-17 06:47:13,381 INFO L175 Difference]: Start difference. First operand has 190 places, 260 transitions, 5156 flow. Second operand 25 states and 196 transitions. [2025-03-17 06:47:13,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 373 transitions, 7546 flow [2025-03-17 06:47:13,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 373 transitions, 6979 flow, removed 7 selfloop flow, removed 10 redundant places. [2025-03-17 06:47:13,490 INFO L231 Difference]: Finished difference. Result has 207 places, 245 transitions, 4899 flow [2025-03-17 06:47:13,491 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=4649, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=4899, PETRI_PLACES=207, PETRI_TRANSITIONS=245} [2025-03-17 06:47:13,491 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 183 predicate places. [2025-03-17 06:47:13,491 INFO L471 AbstractCegarLoop]: Abstraction has has 207 places, 245 transitions, 4899 flow [2025-03-17 06:47:13,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.625) internal successors, (111), 24 states have internal predecessors, (111), 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 06:47:13,491 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:47:13,491 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:47:13,496 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-03-17 06:47:13,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:47:13,692 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:47:13,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:47:13,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1266518984, now seen corresponding path program 13 times [2025-03-17 06:47:13,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:47:13,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699136717] [2025-03-17 06:47:13,692 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-17 06:47:13,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:47:13,695 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-17 06:47:13,696 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 06:47:13,696 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:47:13,696 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:13,774 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:13,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:47:13,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699136717] [2025-03-17 06:47:13,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699136717] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:47:13,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538599943] [2025-03-17 06:47:13,775 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-17 06:47:13,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:47:13,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:47:13,777 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:47:13,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-17 06:47:13,798 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-17 06:47:13,804 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 06:47:13,805 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:47:13,805 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:13,805 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-17 06:47:13,805 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:47:13,867 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:13,867 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:47:13,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:13,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538599943] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 06:47:13,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 06:47:14,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2025-03-17 06:47:14,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906907953] [2025-03-17 06:47:14,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 06:47:14,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-03-17 06:47:14,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:47:14,000 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-03-17 06:47:14,000 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2025-03-17 06:47:14,011 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:47:14,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 245 transitions, 4899 flow. Second operand has 21 states, 21 states have (on average 4.476190476190476) internal successors, (94), 21 states have internal predecessors, (94), 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 06:47:14,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:47:14,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:47:14,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:47:14,750 INFO L124 PetriNetUnfolderBase]: 1238/2465 cut-off events. [2025-03-17 06:47:14,750 INFO L125 PetriNetUnfolderBase]: For 29722/29722 co-relation queries the response was YES. [2025-03-17 06:47:14,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16766 conditions, 2465 events. 1238/2465 cut-off events. For 29722/29722 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 16325 event pairs, 137 based on Foata normal form. 6/2471 useless extension candidates. Maximal degree in co-relation 16583. Up to 1121 conditions per place. [2025-03-17 06:47:14,767 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 154 selfloop transitions, 249 changer transitions 46/450 dead transitions. [2025-03-17 06:47:14,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 450 transitions, 9308 flow [2025-03-17 06:47:14,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-03-17 06:47:14,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2025-03-17 06:47:14,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 218 transitions. [2025-03-17 06:47:14,768 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3811188811188811 [2025-03-17 06:47:14,768 INFO L175 Difference]: Start difference. First operand has 207 places, 245 transitions, 4899 flow. Second operand 26 states and 218 transitions. [2025-03-17 06:47:14,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 450 transitions, 9308 flow [2025-03-17 06:47:14,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 450 transitions, 8500 flow, removed 101 selfloop flow, removed 19 redundant places. [2025-03-17 06:47:14,886 INFO L231 Difference]: Finished difference. Result has 210 places, 350 transitions, 7147 flow [2025-03-17 06:47:14,886 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=4390, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=7147, PETRI_PLACES=210, PETRI_TRANSITIONS=350} [2025-03-17 06:47:14,886 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 186 predicate places. [2025-03-17 06:47:14,886 INFO L471 AbstractCegarLoop]: Abstraction has has 210 places, 350 transitions, 7147 flow [2025-03-17 06:47:14,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.476190476190476) internal successors, (94), 21 states have internal predecessors, (94), 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 06:47:14,886 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:47:14,886 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:47:14,893 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-03-17 06:47:15,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:47:15,087 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:47:15,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:47:15,087 INFO L85 PathProgramCache]: Analyzing trace with hash 597139018, now seen corresponding path program 14 times [2025-03-17 06:47:15,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:47:15,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416892665] [2025-03-17 06:47:15,087 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 06:47:15,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:47:15,089 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-17 06:47:15,091 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 06:47:15,091 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 06:47:15,091 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:15,172 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:15,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:47:15,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416892665] [2025-03-17 06:47:15,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416892665] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:47:15,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66552234] [2025-03-17 06:47:15,173 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 06:47:15,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:47:15,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:47:15,175 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:47:15,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-17 06:47:15,201 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-17 06:47:15,212 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 06:47:15,212 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 06:47:15,212 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:15,213 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-17 06:47:15,214 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:47:15,296 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:15,296 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:47:15,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:15,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66552234] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 06:47:15,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 06:47:15,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2025-03-17 06:47:15,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857700654] [2025-03-17 06:47:15,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 06:47:15,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-03-17 06:47:15,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:47:15,447 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-03-17 06:47:15,447 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2025-03-17 06:47:15,451 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:47:15,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 350 transitions, 7147 flow. Second operand has 22 states, 22 states have (on average 4.5) internal successors, (99), 22 states have internal predecessors, (99), 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 06:47:15,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:47:15,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:47:15,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:47:16,437 INFO L124 PetriNetUnfolderBase]: 1359/2730 cut-off events. [2025-03-17 06:47:16,437 INFO L125 PetriNetUnfolderBase]: For 31717/31717 co-relation queries the response was YES. [2025-03-17 06:47:16,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18251 conditions, 2730 events. 1359/2730 cut-off events. For 31717/31717 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 18763 event pairs, 245 based on Foata normal form. 10/2740 useless extension candidates. Maximal degree in co-relation 18053. Up to 1573 conditions per place. [2025-03-17 06:47:16,453 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 229 selfloop transitions, 184 changer transitions 64/478 dead transitions. [2025-03-17 06:47:16,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 478 transitions, 9502 flow [2025-03-17 06:47:16,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-03-17 06:47:16,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2025-03-17 06:47:16,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 236 transitions. [2025-03-17 06:47:16,454 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36990595611285265 [2025-03-17 06:47:16,454 INFO L175 Difference]: Start difference. First operand has 210 places, 350 transitions, 7147 flow. Second operand 29 states and 236 transitions. [2025-03-17 06:47:16,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 478 transitions, 9502 flow [2025-03-17 06:47:16,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 478 transitions, 9175 flow, removed 141 selfloop flow, removed 6 redundant places. [2025-03-17 06:47:16,622 INFO L231 Difference]: Finished difference. Result has 243 places, 367 transitions, 7649 flow [2025-03-17 06:47:16,622 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=6840, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=7649, PETRI_PLACES=243, PETRI_TRANSITIONS=367} [2025-03-17 06:47:16,623 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 219 predicate places. [2025-03-17 06:47:16,623 INFO L471 AbstractCegarLoop]: Abstraction has has 243 places, 367 transitions, 7649 flow [2025-03-17 06:47:16,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.5) internal successors, (99), 22 states have internal predecessors, (99), 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 06:47:16,623 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:47:16,623 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:47:16,630 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-03-17 06:47:16,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2025-03-17 06:47:16,828 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:47:16,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:47:16,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1663687340, now seen corresponding path program 15 times [2025-03-17 06:47:16,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:47:16,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015045753] [2025-03-17 06:47:16,829 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 06:47:16,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:47:16,831 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-03-17 06:47:16,832 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 06:47:16,832 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-17 06:47:16,832 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:16,913 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:16,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:47:16,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015045753] [2025-03-17 06:47:16,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015045753] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:47:16,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852232484] [2025-03-17 06:47:16,913 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 06:47:16,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:47:16,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:47:16,915 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:47:16,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-03-17 06:47:16,938 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-03-17 06:47:16,946 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 06:47:16,946 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-17 06:47:16,946 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:16,946 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-17 06:47:16,947 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:47:17,061 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:17,061 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:47:17,197 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:17,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852232484] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 06:47:17,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 06:47:17,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2025-03-17 06:47:17,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231275542] [2025-03-17 06:47:17,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 06:47:17,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-17 06:47:17,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:47:17,198 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-17 06:47:17,199 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=462, Unknown=0, NotChecked=0, Total=552 [2025-03-17 06:47:17,219 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:47:17,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 367 transitions, 7649 flow. Second operand has 24 states, 24 states have (on average 4.458333333333333) internal successors, (107), 24 states have internal predecessors, (107), 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 06:47:17,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:47:17,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:47:17,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:47:18,165 INFO L124 PetriNetUnfolderBase]: 1598/3189 cut-off events. [2025-03-17 06:47:18,165 INFO L125 PetriNetUnfolderBase]: For 41111/41111 co-relation queries the response was YES. [2025-03-17 06:47:18,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22005 conditions, 3189 events. 1598/3189 cut-off events. For 41111/41111 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 22513 event pairs, 203 based on Foata normal form. 22/3211 useless extension candidates. Maximal degree in co-relation 21740. Up to 1164 conditions per place. [2025-03-17 06:47:18,190 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 165 selfloop transitions, 217 changer transitions 140/523 dead transitions. [2025-03-17 06:47:18,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 523 transitions, 11240 flow [2025-03-17 06:47:18,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-03-17 06:47:18,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2025-03-17 06:47:18,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 212 transitions. [2025-03-17 06:47:18,191 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34415584415584416 [2025-03-17 06:47:18,191 INFO L175 Difference]: Start difference. First operand has 243 places, 367 transitions, 7649 flow. Second operand 28 states and 212 transitions. [2025-03-17 06:47:18,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 523 transitions, 11240 flow [2025-03-17 06:47:18,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 523 transitions, 10871 flow, removed 69 selfloop flow, removed 15 redundant places. [2025-03-17 06:47:18,399 INFO L231 Difference]: Finished difference. Result has 253 places, 343 transitions, 7228 flow [2025-03-17 06:47:18,399 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=7373, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=7228, PETRI_PLACES=253, PETRI_TRANSITIONS=343} [2025-03-17 06:47:18,399 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 229 predicate places. [2025-03-17 06:47:18,400 INFO L471 AbstractCegarLoop]: Abstraction has has 253 places, 343 transitions, 7228 flow [2025-03-17 06:47:18,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.458333333333333) internal successors, (107), 24 states have internal predecessors, (107), 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 06:47:18,400 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:47:18,400 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:47:18,405 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-03-17 06:47:18,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2025-03-17 06:47:18,600 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:47:18,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:47:18,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1186122026, now seen corresponding path program 16 times [2025-03-17 06:47:18,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:47:18,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905236718] [2025-03-17 06:47:18,601 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 06:47:18,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:47:18,602 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-03-17 06:47:18,604 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 06:47:18,604 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 06:47:18,604 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:18,680 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:18,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:47:18,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905236718] [2025-03-17 06:47:18,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905236718] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:47:18,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177641582] [2025-03-17 06:47:18,680 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 06:47:18,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:47:18,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:47:18,682 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:47:18,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-03-17 06:47:18,706 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-03-17 06:47:18,714 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 06:47:18,714 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 06:47:18,714 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:18,715 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-17 06:47:18,715 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:47:18,817 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:18,817 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:47:18,939 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:18,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177641582] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 06:47:18,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 06:47:18,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2025-03-17 06:47:18,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381397503] [2025-03-17 06:47:18,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 06:47:18,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-17 06:47:18,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:47:18,940 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-17 06:47:18,940 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2025-03-17 06:47:18,941 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:47:18,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 343 transitions, 7228 flow. Second operand has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:47:18,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:47:18,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:47:18,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:47:19,658 INFO L124 PetriNetUnfolderBase]: 1138/2305 cut-off events. [2025-03-17 06:47:19,658 INFO L125 PetriNetUnfolderBase]: For 30065/30065 co-relation queries the response was YES. [2025-03-17 06:47:19,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16000 conditions, 2305 events. 1138/2305 cut-off events. For 30065/30065 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 15239 event pairs, 120 based on Foata normal form. 8/2313 useless extension candidates. Maximal degree in co-relation 15793. Up to 1119 conditions per place. [2025-03-17 06:47:19,670 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 132 selfloop transitions, 178 changer transitions 90/401 dead transitions. [2025-03-17 06:47:19,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 401 transitions, 8601 flow [2025-03-17 06:47:19,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-03-17 06:47:19,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2025-03-17 06:47:19,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 208 transitions. [2025-03-17 06:47:19,671 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3501683501683502 [2025-03-17 06:47:19,671 INFO L175 Difference]: Start difference. First operand has 253 places, 343 transitions, 7228 flow. Second operand 27 states and 208 transitions. [2025-03-17 06:47:19,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 401 transitions, 8601 flow [2025-03-17 06:47:19,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 401 transitions, 8238 flow, removed 67 selfloop flow, removed 15 redundant places. [2025-03-17 06:47:19,788 INFO L231 Difference]: Finished difference. Result has 258 places, 272 transitions, 5844 flow [2025-03-17 06:47:19,788 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=6891, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=5844, PETRI_PLACES=258, PETRI_TRANSITIONS=272} [2025-03-17 06:47:19,788 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 234 predicate places. [2025-03-17 06:47:19,788 INFO L471 AbstractCegarLoop]: Abstraction has has 258 places, 272 transitions, 5844 flow [2025-03-17 06:47:19,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:47:19,788 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:47:19,789 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:47:19,794 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-03-17 06:47:19,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:47:19,989 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:47:19,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:47:19,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1530729894, now seen corresponding path program 17 times [2025-03-17 06:47:19,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:47:19,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576057358] [2025-03-17 06:47:19,990 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 06:47:19,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:47:19,991 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-17 06:47:19,993 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 06:47:19,993 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 06:47:19,993 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:20,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:20,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:47:20,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576057358] [2025-03-17 06:47:20,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576057358] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:47:20,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096132095] [2025-03-17 06:47:20,050 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 06:47:20,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:47:20,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:47:20,052 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:47:20,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-03-17 06:47:20,076 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-17 06:47:20,083 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 06:47:20,083 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 06:47:20,083 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:20,084 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-17 06:47:20,084 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:47:20,134 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:20,134 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 06:47:20,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096132095] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:47:20,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 06:47:20,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 11 [2025-03-17 06:47:20,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467056950] [2025-03-17 06:47:20,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:47:20,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 06:47:20,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:47:20,135 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 06:47:20,135 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2025-03-17 06:47:20,143 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:47:20,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 272 transitions, 5844 flow. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:47:20,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:47:20,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:47:20,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:47:20,401 INFO L124 PetriNetUnfolderBase]: 944/1930 cut-off events. [2025-03-17 06:47:20,401 INFO L125 PetriNetUnfolderBase]: For 24512/24512 co-relation queries the response was YES. [2025-03-17 06:47:20,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13072 conditions, 1930 events. 944/1930 cut-off events. For 24512/24512 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 12303 event pairs, 211 based on Foata normal form. 6/1936 useless extension candidates. Maximal degree in co-relation 13007. Up to 1257 conditions per place. [2025-03-17 06:47:20,415 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 157 selfloop transitions, 108 changer transitions 30/296 dead transitions. [2025-03-17 06:47:20,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 296 transitions, 6735 flow [2025-03-17 06:47:20,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 06:47:20,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-17 06:47:20,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 78 transitions. [2025-03-17 06:47:20,415 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2025-03-17 06:47:20,415 INFO L175 Difference]: Start difference. First operand has 258 places, 272 transitions, 5844 flow. Second operand 9 states and 78 transitions. [2025-03-17 06:47:20,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 296 transitions, 6735 flow [2025-03-17 06:47:20,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 296 transitions, 6399 flow, removed 22 selfloop flow, removed 27 redundant places. [2025-03-17 06:47:20,506 INFO L231 Difference]: Finished difference. Result has 220 places, 253 transitions, 5307 flow [2025-03-17 06:47:20,506 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=5510, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5307, PETRI_PLACES=220, PETRI_TRANSITIONS=253} [2025-03-17 06:47:20,507 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 196 predicate places. [2025-03-17 06:47:20,507 INFO L471 AbstractCegarLoop]: Abstraction has has 220 places, 253 transitions, 5307 flow [2025-03-17 06:47:20,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:47:20,507 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:47:20,507 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:47:20,513 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-03-17 06:47:20,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:47:20,708 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:47:20,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:47:20,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1613898082, now seen corresponding path program 18 times [2025-03-17 06:47:20,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:47:20,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754591833] [2025-03-17 06:47:20,708 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 06:47:20,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:47:20,710 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 2 equivalence classes. [2025-03-17 06:47:20,712 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 06:47:20,712 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-17 06:47:20,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:20,786 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:20,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:47:20,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754591833] [2025-03-17 06:47:20,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754591833] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:47:20,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513536593] [2025-03-17 06:47:20,786 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 06:47:20,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:47:20,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:47:20,789 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:47:20,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-03-17 06:47:20,809 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 2 equivalence classes. [2025-03-17 06:47:20,815 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 06:47:20,815 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-17 06:47:20,815 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:20,816 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-17 06:47:20,817 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:47:20,896 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:20,896 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:47:21,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:21,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513536593] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 06:47:21,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 06:47:21,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2025-03-17 06:47:21,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162184561] [2025-03-17 06:47:21,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 06:47:21,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-17 06:47:21,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:47:21,044 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-17 06:47:21,045 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2025-03-17 06:47:21,050 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:47:21,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 253 transitions, 5307 flow. Second operand has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:47:21,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:47:21,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:47:21,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:47:21,957 INFO L124 PetriNetUnfolderBase]: 1260/2589 cut-off events. [2025-03-17 06:47:21,958 INFO L125 PetriNetUnfolderBase]: For 30976/30976 co-relation queries the response was YES. [2025-03-17 06:47:21,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16811 conditions, 2589 events. 1260/2589 cut-off events. For 30976/30976 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 17819 event pairs, 75 based on Foata normal form. 17/2602 useless extension candidates. Maximal degree in co-relation 16752. Up to 557 conditions per place. [2025-03-17 06:47:21,973 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 160 selfloop transitions, 190 changer transitions 87/438 dead transitions. [2025-03-17 06:47:21,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 438 transitions, 8866 flow [2025-03-17 06:47:21,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-03-17 06:47:21,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2025-03-17 06:47:21,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 227 transitions. [2025-03-17 06:47:21,974 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34393939393939393 [2025-03-17 06:47:21,974 INFO L175 Difference]: Start difference. First operand has 220 places, 253 transitions, 5307 flow. Second operand 30 states and 227 transitions. [2025-03-17 06:47:21,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 438 transitions, 8866 flow [2025-03-17 06:47:22,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 438 transitions, 8534 flow, removed 6 selfloop flow, removed 7 redundant places. [2025-03-17 06:47:22,086 INFO L231 Difference]: Finished difference. Result has 247 places, 285 transitions, 6294 flow [2025-03-17 06:47:22,086 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=5076, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=6294, PETRI_PLACES=247, PETRI_TRANSITIONS=285} [2025-03-17 06:47:22,086 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 223 predicate places. [2025-03-17 06:47:22,086 INFO L471 AbstractCegarLoop]: Abstraction has has 247 places, 285 transitions, 6294 flow [2025-03-17 06:47:22,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:47:22,086 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:47:22,086 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:47:22,092 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-03-17 06:47:22,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2025-03-17 06:47:22,287 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:47:22,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:47:22,288 INFO L85 PathProgramCache]: Analyzing trace with hash 606008812, now seen corresponding path program 19 times [2025-03-17 06:47:22,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:47:22,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306786858] [2025-03-17 06:47:22,288 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-17 06:47:22,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:47:22,290 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-17 06:47:22,292 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 06:47:22,292 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:47:22,292 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:22,374 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:22,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:47:22,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306786858] [2025-03-17 06:47:22,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306786858] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:47:22,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617073675] [2025-03-17 06:47:22,374 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-17 06:47:22,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:47:22,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:47:22,376 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:47:22,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-03-17 06:47:22,404 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-17 06:47:22,415 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 06:47:22,416 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:47:22,416 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:22,417 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-17 06:47:22,417 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:47:22,539 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:22,540 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:47:22,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:22,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617073675] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 06:47:22,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 06:47:22,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2025-03-17 06:47:22,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302256907] [2025-03-17 06:47:22,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 06:47:22,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-17 06:47:22,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:47:22,678 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-17 06:47:22,678 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2025-03-17 06:47:22,689 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:47:22,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 285 transitions, 6294 flow. Second operand has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:47:22,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:47:22,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:47:22,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:47:23,232 INFO L124 PetriNetUnfolderBase]: 874/1859 cut-off events. [2025-03-17 06:47:23,232 INFO L125 PetriNetUnfolderBase]: For 24669/24669 co-relation queries the response was YES. [2025-03-17 06:47:23,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12887 conditions, 1859 events. 874/1859 cut-off events. For 24669/24669 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 12509 event pairs, 23 based on Foata normal form. 10/1865 useless extension candidates. Maximal degree in co-relation 12823. Up to 487 conditions per place. [2025-03-17 06:47:23,246 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 111 selfloop transitions, 159 changer transitions 52/323 dead transitions. [2025-03-17 06:47:23,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 323 transitions, 7234 flow [2025-03-17 06:47:23,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-17 06:47:23,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-17 06:47:23,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 115 transitions. [2025-03-17 06:47:23,247 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2025-03-17 06:47:23,247 INFO L175 Difference]: Start difference. First operand has 247 places, 285 transitions, 6294 flow. Second operand 15 states and 115 transitions. [2025-03-17 06:47:23,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 323 transitions, 7234 flow [2025-03-17 06:47:23,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 323 transitions, 6551 flow, removed 32 selfloop flow, removed 22 redundant places. [2025-03-17 06:47:23,351 INFO L231 Difference]: Finished difference. Result has 226 places, 248 transitions, 5182 flow [2025-03-17 06:47:23,351 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=5632, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=5182, PETRI_PLACES=226, PETRI_TRANSITIONS=248} [2025-03-17 06:47:23,351 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 202 predicate places. [2025-03-17 06:47:23,351 INFO L471 AbstractCegarLoop]: Abstraction has has 226 places, 248 transitions, 5182 flow [2025-03-17 06:47:23,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:47:23,351 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:47:23,351 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:47:23,358 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2025-03-17 06:47:23,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2025-03-17 06:47:23,552 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:47:23,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:47:23,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1111284028, now seen corresponding path program 20 times [2025-03-17 06:47:23,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:47:23,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197571730] [2025-03-17 06:47:23,553 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 06:47:23,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:47:23,555 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-17 06:47:23,556 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 06:47:23,556 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 06:47:23,556 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:23,627 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:23,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:47:23,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197571730] [2025-03-17 06:47:23,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197571730] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:47:23,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347629406] [2025-03-17 06:47:23,628 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 06:47:23,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:47:23,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:47:23,631 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:47:23,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-03-17 06:47:23,653 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-17 06:47:23,661 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 06:47:23,661 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 06:47:23,661 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:23,661 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-17 06:47:23,662 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:47:23,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:23,739 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:47:23,861 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:23,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347629406] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 06:47:23,861 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 06:47:23,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2025-03-17 06:47:23,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32505410] [2025-03-17 06:47:23,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 06:47:23,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-17 06:47:23,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:47:23,862 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-17 06:47:23,862 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2025-03-17 06:47:23,874 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:47:23,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 248 transitions, 5182 flow. Second operand has 23 states, 23 states have (on average 4.434782608695652) internal successors, (102), 23 states have internal predecessors, (102), 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 06:47:23,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:47:23,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:47:23,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:47:24,317 INFO L124 PetriNetUnfolderBase]: 779/1699 cut-off events. [2025-03-17 06:47:24,317 INFO L125 PetriNetUnfolderBase]: For 19527/19527 co-relation queries the response was YES. [2025-03-17 06:47:24,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11171 conditions, 1699 events. 779/1699 cut-off events. For 19527/19527 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 11502 event pairs, 80 based on Foata normal form. 6/1701 useless extension candidates. Maximal degree in co-relation 11113. Up to 710 conditions per place. [2025-03-17 06:47:24,326 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 142 selfloop transitions, 119 changer transitions 33/295 dead transitions. [2025-03-17 06:47:24,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 295 transitions, 6312 flow [2025-03-17 06:47:24,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-17 06:47:24,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-17 06:47:24,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 106 transitions. [2025-03-17 06:47:24,327 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3706293706293706 [2025-03-17 06:47:24,327 INFO L175 Difference]: Start difference. First operand has 226 places, 248 transitions, 5182 flow. Second operand 13 states and 106 transitions. [2025-03-17 06:47:24,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 295 transitions, 6312 flow [2025-03-17 06:47:24,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 295 transitions, 5872 flow, removed 25 selfloop flow, removed 14 redundant places. [2025-03-17 06:47:24,403 INFO L231 Difference]: Finished difference. Result has 222 places, 239 transitions, 4872 flow [2025-03-17 06:47:24,404 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=4815, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4872, PETRI_PLACES=222, PETRI_TRANSITIONS=239} [2025-03-17 06:47:24,404 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 198 predicate places. [2025-03-17 06:47:24,404 INFO L471 AbstractCegarLoop]: Abstraction has has 222 places, 239 transitions, 4872 flow [2025-03-17 06:47:24,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.434782608695652) internal successors, (102), 23 states have internal predecessors, (102), 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 06:47:24,404 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:47:24,405 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:47:24,410 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2025-03-17 06:47:24,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2025-03-17 06:47:24,605 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:47:24,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:47:24,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1515936940, now seen corresponding path program 21 times [2025-03-17 06:47:24,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:47:24,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661102651] [2025-03-17 06:47:24,606 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 06:47:24,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:47:24,608 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-03-17 06:47:24,613 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 06:47:24,613 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-17 06:47:24,613 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:24,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:24,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:47:24,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661102651] [2025-03-17 06:47:24,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661102651] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:47:24,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816869708] [2025-03-17 06:47:24,718 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 06:47:24,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:47:24,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:47:24,721 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:47:24,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-03-17 06:47:24,746 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-03-17 06:47:24,755 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 06:47:24,755 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-17 06:47:24,755 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:24,756 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-17 06:47:24,756 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:47:24,857 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:24,857 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:47:25,003 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:25,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816869708] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 06:47:25,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 06:47:25,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2025-03-17 06:47:25,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727907628] [2025-03-17 06:47:25,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 06:47:25,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-17 06:47:25,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:47:25,004 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-17 06:47:25,005 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2025-03-17 06:47:25,016 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:47:25,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 239 transitions, 4872 flow. Second operand has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:47:25,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:47:25,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:47:25,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:47:25,403 INFO L124 PetriNetUnfolderBase]: 681/1459 cut-off events. [2025-03-17 06:47:25,403 INFO L125 PetriNetUnfolderBase]: For 15351/15351 co-relation queries the response was YES. [2025-03-17 06:47:25,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9491 conditions, 1459 events. 681/1459 cut-off events. For 15351/15351 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 9287 event pairs, 23 based on Foata normal form. 8/1463 useless extension candidates. Maximal degree in co-relation 9437. Up to 323 conditions per place. [2025-03-17 06:47:25,414 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 78 selfloop transitions, 97 changer transitions 92/268 dead transitions. [2025-03-17 06:47:25,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 268 transitions, 5552 flow [2025-03-17 06:47:25,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-17 06:47:25,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-17 06:47:25,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 112 transitions. [2025-03-17 06:47:25,415 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3393939393939394 [2025-03-17 06:47:25,415 INFO L175 Difference]: Start difference. First operand has 222 places, 239 transitions, 4872 flow. Second operand 15 states and 112 transitions. [2025-03-17 06:47:25,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 268 transitions, 5552 flow [2025-03-17 06:47:25,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 268 transitions, 5245 flow, removed 18 selfloop flow, removed 12 redundant places. [2025-03-17 06:47:25,494 INFO L231 Difference]: Finished difference. Result has 222 places, 159 transitions, 3246 flow [2025-03-17 06:47:25,494 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=4569, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3246, PETRI_PLACES=222, PETRI_TRANSITIONS=159} [2025-03-17 06:47:25,494 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 198 predicate places. [2025-03-17 06:47:25,494 INFO L471 AbstractCegarLoop]: Abstraction has has 222 places, 159 transitions, 3246 flow [2025-03-17 06:47:25,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:47:25,495 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:47:25,495 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:47:25,502 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2025-03-17 06:47:25,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2025-03-17 06:47:25,696 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:47:25,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:47:25,697 INFO L85 PathProgramCache]: Analyzing trace with hash 576054226, now seen corresponding path program 22 times [2025-03-17 06:47:25,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:47:25,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882327336] [2025-03-17 06:47:25,697 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 06:47:25,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:47:25,700 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-03-17 06:47:25,701 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 06:47:25,701 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 06:47:25,701 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:25,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:25,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:47:25,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882327336] [2025-03-17 06:47:25,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882327336] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:47:25,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287545753] [2025-03-17 06:47:25,768 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 06:47:25,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:47:25,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:47:25,770 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:47:25,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-03-17 06:47:25,798 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-03-17 06:47:25,805 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 06:47:25,805 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 06:47:25,805 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:25,806 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-17 06:47:25,806 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:47:25,895 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:25,895 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:47:26,020 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:26,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287545753] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 06:47:26,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 06:47:26,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2025-03-17 06:47:26,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300012068] [2025-03-17 06:47:26,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 06:47:26,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-17 06:47:26,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:47:26,021 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-17 06:47:26,021 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2025-03-17 06:47:26,029 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:47:26,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 159 transitions, 3246 flow. Second operand has 23 states, 23 states have (on average 4.434782608695652) internal successors, (102), 23 states have internal predecessors, (102), 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 06:47:26,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:47:26,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:47:26,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:47:26,356 INFO L124 PetriNetUnfolderBase]: 483/1066 cut-off events. [2025-03-17 06:47:26,356 INFO L125 PetriNetUnfolderBase]: For 10823/10823 co-relation queries the response was YES. [2025-03-17 06:47:26,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6508 conditions, 1066 events. 483/1066 cut-off events. For 10823/10823 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 6479 event pairs, 75 based on Foata normal form. 7/1069 useless extension candidates. Maximal degree in co-relation 6456. Up to 348 conditions per place. [2025-03-17 06:47:26,363 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 81 selfloop transitions, 71 changer transitions 34/187 dead transitions. [2025-03-17 06:47:26,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 187 transitions, 3792 flow [2025-03-17 06:47:26,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 06:47:26,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-17 06:47:26,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 98 transitions. [2025-03-17 06:47:26,364 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3712121212121212 [2025-03-17 06:47:26,364 INFO L175 Difference]: Start difference. First operand has 222 places, 159 transitions, 3246 flow. Second operand 12 states and 98 transitions. [2025-03-17 06:47:26,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 187 transitions, 3792 flow [2025-03-17 06:47:26,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 187 transitions, 3043 flow, removed 37 selfloop flow, removed 33 redundant places. [2025-03-17 06:47:26,394 INFO L231 Difference]: Finished difference. Result has 171 places, 134 transitions, 2258 flow [2025-03-17 06:47:26,395 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2526, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2258, PETRI_PLACES=171, PETRI_TRANSITIONS=134} [2025-03-17 06:47:26,395 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 147 predicate places. [2025-03-17 06:47:26,395 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 134 transitions, 2258 flow [2025-03-17 06:47:26,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.434782608695652) internal successors, (102), 23 states have internal predecessors, (102), 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 06:47:26,395 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:47:26,395 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:47:26,402 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2025-03-17 06:47:26,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:47:26,596 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:47:26,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:47:26,596 INFO L85 PathProgramCache]: Analyzing trace with hash 346397819, now seen corresponding path program 23 times [2025-03-17 06:47:26,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:47:26,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641825625] [2025-03-17 06:47:26,597 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 06:47:26,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:47:26,599 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-03-17 06:47:26,600 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 06:47:26,600 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 06:47:26,600 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:26,625 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:26,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:47:26,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641825625] [2025-03-17 06:47:26,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641825625] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:47:26,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660093248] [2025-03-17 06:47:26,625 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 06:47:26,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:47:26,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:47:26,628 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:47:26,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2025-03-17 06:47:26,649 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-03-17 06:47:26,657 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 06:47:26,657 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 06:47:26,657 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:26,657 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 06:47:26,658 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:47:26,665 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:26,665 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:47:26,703 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:26,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660093248] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 06:47:26,703 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 06:47:26,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2025-03-17 06:47:26,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990904866] [2025-03-17 06:47:26,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 06:47:26,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 06:47:26,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:47:26,704 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 06:47:26,704 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2025-03-17 06:47:26,708 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:47:26,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 134 transitions, 2258 flow. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 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 06:47:26,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:47:26,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:47:26,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:47:26,887 INFO L124 PetriNetUnfolderBase]: 471/1036 cut-off events. [2025-03-17 06:47:26,887 INFO L125 PetriNetUnfolderBase]: For 7233/7233 co-relation queries the response was YES. [2025-03-17 06:47:26,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5944 conditions, 1036 events. 471/1036 cut-off events. For 7233/7233 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 6149 event pairs, 147 based on Foata normal form. 18/1046 useless extension candidates. Maximal degree in co-relation 5897. Up to 498 conditions per place. [2025-03-17 06:47:26,892 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 135 selfloop transitions, 48 changer transitions 8/192 dead transitions. [2025-03-17 06:47:26,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 192 transitions, 3318 flow [2025-03-17 06:47:26,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 06:47:26,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-17 06:47:26,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 110 transitions. [2025-03-17 06:47:26,893 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2025-03-17 06:47:26,893 INFO L175 Difference]: Start difference. First operand has 171 places, 134 transitions, 2258 flow. Second operand 12 states and 110 transitions. [2025-03-17 06:47:26,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 192 transitions, 3318 flow [2025-03-17 06:47:26,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 192 transitions, 3005 flow, removed 13 selfloop flow, removed 17 redundant places. [2025-03-17 06:47:26,914 INFO L231 Difference]: Finished difference. Result has 160 places, 139 transitions, 2219 flow [2025-03-17 06:47:26,915 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1848, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2219, PETRI_PLACES=160, PETRI_TRANSITIONS=139} [2025-03-17 06:47:26,915 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 136 predicate places. [2025-03-17 06:47:26,915 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 139 transitions, 2219 flow [2025-03-17 06:47:26,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 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 06:47:26,915 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:47:26,915 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:47:26,921 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2025-03-17 06:47:27,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:47:27,119 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:47:27,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:47:27,119 INFO L85 PathProgramCache]: Analyzing trace with hash 985216086, now seen corresponding path program 24 times [2025-03-17 06:47:27,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:47:27,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745541114] [2025-03-17 06:47:27,119 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 06:47:27,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:47:27,122 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 3 equivalence classes. [2025-03-17 06:47:27,124 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 06:47:27,124 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-03-17 06:47:27,124 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:27,145 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:27,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:47:27,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745541114] [2025-03-17 06:47:27,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745541114] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:47:27,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98692710] [2025-03-17 06:47:27,146 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 06:47:27,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:47:27,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:47:27,148 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:47:27,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2025-03-17 06:47:27,170 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 3 equivalence classes. [2025-03-17 06:47:27,178 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 06:47:27,178 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-03-17 06:47:27,178 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:27,179 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 06:47:27,179 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:47:27,185 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:27,185 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:47:27,218 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:27,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98692710] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 06:47:27,218 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 06:47:27,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2025-03-17 06:47:27,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342459154] [2025-03-17 06:47:27,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 06:47:27,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 06:47:27,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:47:27,219 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 06:47:27,219 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2025-03-17 06:47:27,221 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:47:27,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 139 transitions, 2219 flow. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 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 06:47:27,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:47:27,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:47:27,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:47:27,377 INFO L124 PetriNetUnfolderBase]: 422/933 cut-off events. [2025-03-17 06:47:27,377 INFO L125 PetriNetUnfolderBase]: For 5648/5648 co-relation queries the response was YES. [2025-03-17 06:47:27,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5017 conditions, 933 events. 422/933 cut-off events. For 5648/5648 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 5217 event pairs, 64 based on Foata normal form. 8/937 useless extension candidates. Maximal degree in co-relation 4971. Up to 519 conditions per place. [2025-03-17 06:47:27,382 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 106 selfloop transitions, 38 changer transitions 0/145 dead transitions. [2025-03-17 06:47:27,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 145 transitions, 2344 flow [2025-03-17 06:47:27,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 06:47:27,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-17 06:47:27,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 77 transitions. [2025-03-17 06:47:27,382 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2025-03-17 06:47:27,382 INFO L175 Difference]: Start difference. First operand has 160 places, 139 transitions, 2219 flow. Second operand 9 states and 77 transitions. [2025-03-17 06:47:27,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 145 transitions, 2344 flow [2025-03-17 06:47:27,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 145 transitions, 2215 flow, removed 33 selfloop flow, removed 5 redundant places. [2025-03-17 06:47:27,416 INFO L231 Difference]: Finished difference. Result has 159 places, 128 transitions, 1942 flow [2025-03-17 06:47:27,416 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1866, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1942, PETRI_PLACES=159, PETRI_TRANSITIONS=128} [2025-03-17 06:47:27,416 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 135 predicate places. [2025-03-17 06:47:27,416 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 128 transitions, 1942 flow [2025-03-17 06:47:27,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 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 06:47:27,416 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:47:27,416 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:47:27,422 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2025-03-17 06:47:27,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2025-03-17 06:47:27,617 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:47:27,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:47:27,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1484961128, now seen corresponding path program 25 times [2025-03-17 06:47:27,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:47:27,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516834129] [2025-03-17 06:47:27,617 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-17 06:47:27,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:47:27,619 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-17 06:47:27,620 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 06:47:27,620 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:47:27,620 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:27,643 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:27,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:47:27,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516834129] [2025-03-17 06:47:27,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516834129] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:47:27,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71725796] [2025-03-17 06:47:27,644 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-17 06:47:27,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:47:27,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:47:27,646 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:47:27,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2025-03-17 06:47:27,671 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-17 06:47:27,679 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 06:47:27,679 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:47:27,679 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:27,680 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 06:47:27,680 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:47:27,688 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:27,688 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:47:27,724 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:27,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71725796] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 06:47:27,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 06:47:27,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2025-03-17 06:47:27,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523402527] [2025-03-17 06:47:27,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 06:47:27,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 06:47:27,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:47:27,725 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 06:47:27,725 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2025-03-17 06:47:27,727 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:47:27,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 128 transitions, 1942 flow. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 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 06:47:27,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:47:27,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:47:27,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:47:27,929 INFO L124 PetriNetUnfolderBase]: 436/960 cut-off events. [2025-03-17 06:47:27,929 INFO L125 PetriNetUnfolderBase]: For 5491/5491 co-relation queries the response was YES. [2025-03-17 06:47:27,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5097 conditions, 960 events. 436/960 cut-off events. For 5491/5491 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5419 event pairs, 121 based on Foata normal form. 8/962 useless extension candidates. Maximal degree in co-relation 5050. Up to 481 conditions per place. [2025-03-17 06:47:27,933 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 128 selfloop transitions, 35 changer transitions 2/166 dead transitions. [2025-03-17 06:47:27,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 166 transitions, 2607 flow [2025-03-17 06:47:27,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 06:47:27,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-17 06:47:27,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 104 transitions. [2025-03-17 06:47:27,934 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2025-03-17 06:47:27,934 INFO L175 Difference]: Start difference. First operand has 159 places, 128 transitions, 1942 flow. Second operand 12 states and 104 transitions. [2025-03-17 06:47:27,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 166 transitions, 2607 flow [2025-03-17 06:47:27,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 166 transitions, 2472 flow, removed 2 selfloop flow, removed 9 redundant places. [2025-03-17 06:47:27,954 INFO L231 Difference]: Finished difference. Result has 162 places, 128 transitions, 1923 flow [2025-03-17 06:47:27,955 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1687, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1923, PETRI_PLACES=162, PETRI_TRANSITIONS=128} [2025-03-17 06:47:27,955 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 138 predicate places. [2025-03-17 06:47:27,955 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 128 transitions, 1923 flow [2025-03-17 06:47:27,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 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 06:47:27,955 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:47:27,955 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:47:27,962 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2025-03-17 06:47:28,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:47:28,156 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:47:28,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:47:28,156 INFO L85 PathProgramCache]: Analyzing trace with hash -370135559, now seen corresponding path program 26 times [2025-03-17 06:47:28,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:47:28,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835849648] [2025-03-17 06:47:28,156 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 06:47:28,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:47:28,158 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-03-17 06:47:28,160 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-03-17 06:47:28,160 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 06:47:28,160 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:28,248 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:28,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:47:28,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835849648] [2025-03-17 06:47:28,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835849648] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:47:28,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033619182] [2025-03-17 06:47:28,248 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 06:47:28,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:47:28,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:47:28,250 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:47:28,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2025-03-17 06:47:28,273 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-03-17 06:47:28,281 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-03-17 06:47:28,281 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 06:47:28,281 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:28,282 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-17 06:47:28,283 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:47:28,380 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:28,380 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:47:28,568 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:28,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033619182] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 06:47:28,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 06:47:28,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 27 [2025-03-17 06:47:28,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174647998] [2025-03-17 06:47:28,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 06:47:28,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-03-17 06:47:28,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:47:28,569 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-03-17 06:47:28,569 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=625, Unknown=0, NotChecked=0, Total=756 [2025-03-17 06:47:28,580 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:47:28,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 128 transitions, 1923 flow. Second operand has 28 states, 28 states have (on average 4.392857142857143) internal successors, (123), 28 states have internal predecessors, (123), 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 06:47:28,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:47:28,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:47:28,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:47:28,924 INFO L124 PetriNetUnfolderBase]: 460/1009 cut-off events. [2025-03-17 06:47:28,924 INFO L125 PetriNetUnfolderBase]: For 5971/5971 co-relation queries the response was YES. [2025-03-17 06:47:28,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5541 conditions, 1009 events. 460/1009 cut-off events. For 5971/5971 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5781 event pairs, 3 based on Foata normal form. 1/1006 useless extension candidates. Maximal degree in co-relation 5492. Up to 372 conditions per place. [2025-03-17 06:47:28,929 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 84 selfloop transitions, 74 changer transitions 11/170 dead transitions. [2025-03-17 06:47:28,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 170 transitions, 2584 flow [2025-03-17 06:47:28,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-17 06:47:28,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-17 06:47:28,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 114 transitions. [2025-03-17 06:47:28,930 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34545454545454546 [2025-03-17 06:47:28,930 INFO L175 Difference]: Start difference. First operand has 162 places, 128 transitions, 1923 flow. Second operand 15 states and 114 transitions. [2025-03-17 06:47:28,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 170 transitions, 2584 flow [2025-03-17 06:47:28,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 170 transitions, 2527 flow, removed 14 selfloop flow, removed 5 redundant places. [2025-03-17 06:47:28,947 INFO L231 Difference]: Finished difference. Result has 174 places, 133 transitions, 2181 flow [2025-03-17 06:47:28,947 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1866, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2181, PETRI_PLACES=174, PETRI_TRANSITIONS=133} [2025-03-17 06:47:28,947 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 150 predicate places. [2025-03-17 06:47:28,947 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 133 transitions, 2181 flow [2025-03-17 06:47:28,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.392857142857143) internal successors, (123), 28 states have internal predecessors, (123), 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 06:47:28,947 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:47:28,948 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:47:28,953 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2025-03-17 06:47:29,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:47:29,149 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:47:29,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:47:29,150 INFO L85 PathProgramCache]: Analyzing trace with hash 240871729, now seen corresponding path program 27 times [2025-03-17 06:47:29,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:47:29,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636049850] [2025-03-17 06:47:29,150 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 06:47:29,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:47:29,152 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 3 equivalence classes. [2025-03-17 06:47:29,153 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-03-17 06:47:29,153 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-17 06:47:29,153 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:29,248 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:29,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:47:29,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636049850] [2025-03-17 06:47:29,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636049850] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:47:29,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832843702] [2025-03-17 06:47:29,249 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 06:47:29,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:47:29,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:47:29,251 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:47:29,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2025-03-17 06:47:29,274 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 3 equivalence classes. [2025-03-17 06:47:29,280 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-03-17 06:47:29,281 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-17 06:47:29,281 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:29,281 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-17 06:47:29,282 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:47:29,363 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:29,363 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:47:29,606 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:29,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832843702] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 06:47:29,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 06:47:29,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 27 [2025-03-17 06:47:29,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225535865] [2025-03-17 06:47:29,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 06:47:29,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-03-17 06:47:29,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:47:29,608 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-03-17 06:47:29,608 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=636, Unknown=0, NotChecked=0, Total=756 [2025-03-17 06:47:29,612 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:47:29,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 133 transitions, 2181 flow. Second operand has 28 states, 28 states have (on average 4.392857142857143) internal successors, (123), 28 states have internal predecessors, (123), 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 06:47:29,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:47:29,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:47:29,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:47:29,960 INFO L124 PetriNetUnfolderBase]: 479/1046 cut-off events. [2025-03-17 06:47:29,960 INFO L125 PetriNetUnfolderBase]: For 6810/6810 co-relation queries the response was YES. [2025-03-17 06:47:29,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6034 conditions, 1046 events. 479/1046 cut-off events. For 6810/6810 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 6106 event pairs, 3 based on Foata normal form. 10/1052 useless extension candidates. Maximal degree in co-relation 5982. Up to 236 conditions per place. [2025-03-17 06:47:29,968 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 78 selfloop transitions, 41 changer transitions 55/175 dead transitions. [2025-03-17 06:47:29,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 175 transitions, 2748 flow [2025-03-17 06:47:29,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-17 06:47:29,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-03-17 06:47:29,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 122 transitions. [2025-03-17 06:47:29,968 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2025-03-17 06:47:29,968 INFO L175 Difference]: Start difference. First operand has 174 places, 133 transitions, 2181 flow. Second operand 16 states and 122 transitions. [2025-03-17 06:47:29,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 175 transitions, 2748 flow [2025-03-17 06:47:29,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 175 transitions, 2670 flow, removed 5 selfloop flow, removed 10 redundant places. [2025-03-17 06:47:29,997 INFO L231 Difference]: Finished difference. Result has 176 places, 90 transitions, 1386 flow [2025-03-17 06:47:29,997 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2110, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1386, PETRI_PLACES=176, PETRI_TRANSITIONS=90} [2025-03-17 06:47:29,997 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 152 predicate places. [2025-03-17 06:47:29,997 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 90 transitions, 1386 flow [2025-03-17 06:47:29,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.392857142857143) internal successors, (123), 28 states have internal predecessors, (123), 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 06:47:29,998 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:47:29,998 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:47:30,005 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2025-03-17 06:47:30,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2025-03-17 06:47:30,198 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:47:30,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:47:30,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1605632701, now seen corresponding path program 28 times [2025-03-17 06:47:30,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:47:30,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301249280] [2025-03-17 06:47:30,199 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 06:47:30,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:47:30,201 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-03-17 06:47:30,202 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-03-17 06:47:30,202 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 06:47:30,202 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:30,289 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:30,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:47:30,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301249280] [2025-03-17 06:47:30,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301249280] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:47:30,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290996787] [2025-03-17 06:47:30,290 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 06:47:30,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:47:30,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:47:30,291 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:47:30,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2025-03-17 06:47:30,313 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-03-17 06:47:30,321 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-03-17 06:47:30,321 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 06:47:30,321 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:30,322 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-17 06:47:30,322 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:47:30,456 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:30,456 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:47:30,702 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:30,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290996787] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 06:47:30,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 06:47:30,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 28 [2025-03-17 06:47:30,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460254943] [2025-03-17 06:47:30,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 06:47:30,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-03-17 06:47:30,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:47:30,703 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-03-17 06:47:30,703 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=681, Unknown=0, NotChecked=0, Total=812 [2025-03-17 06:47:30,716 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:47:30,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 90 transitions, 1386 flow. Second operand has 29 states, 29 states have (on average 4.344827586206897) internal successors, (126), 29 states have internal predecessors, (126), 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 06:47:30,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:47:30,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:47:30,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:47:31,007 INFO L124 PetriNetUnfolderBase]: 259/594 cut-off events. [2025-03-17 06:47:31,007 INFO L125 PetriNetUnfolderBase]: For 4142/4142 co-relation queries the response was YES. [2025-03-17 06:47:31,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3282 conditions, 594 events. 259/594 cut-off events. For 4142/4142 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2968 event pairs, 3 based on Foata normal form. 1/593 useless extension candidates. Maximal degree in co-relation 3232. Up to 152 conditions per place. [2025-03-17 06:47:31,011 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 75 selfloop transitions, 44 changer transitions 8/128 dead transitions. [2025-03-17 06:47:31,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 128 transitions, 1801 flow [2025-03-17 06:47:31,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-17 06:47:31,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-17 06:47:31,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 117 transitions. [2025-03-17 06:47:31,013 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35454545454545455 [2025-03-17 06:47:31,013 INFO L175 Difference]: Start difference. First operand has 176 places, 90 transitions, 1386 flow. Second operand 15 states and 117 transitions. [2025-03-17 06:47:31,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 128 transitions, 1801 flow [2025-03-17 06:47:31,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 128 transitions, 1565 flow, removed 21 selfloop flow, removed 27 redundant places. [2025-03-17 06:47:31,028 INFO L231 Difference]: Finished difference. Result has 148 places, 90 transitions, 1278 flow [2025-03-17 06:47:31,029 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1165, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1278, PETRI_PLACES=148, PETRI_TRANSITIONS=90} [2025-03-17 06:47:31,029 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 124 predicate places. [2025-03-17 06:47:31,029 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 90 transitions, 1278 flow [2025-03-17 06:47:31,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.344827586206897) internal successors, (126), 29 states have internal predecessors, (126), 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 06:47:31,029 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:47:31,029 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:47:31,036 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2025-03-17 06:47:31,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2025-03-17 06:47:31,230 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:47:31,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:47:31,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1686029659, now seen corresponding path program 29 times [2025-03-17 06:47:31,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:47:31,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852661005] [2025-03-17 06:47:31,230 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 06:47:31,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:47:31,233 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-03-17 06:47:31,235 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-03-17 06:47:31,235 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 06:47:31,235 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:31,292 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 06:47:31,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:47:31,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852661005] [2025-03-17 06:47:31,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852661005] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:47:31,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49869515] [2025-03-17 06:47:31,292 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 06:47:31,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:47:31,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:47:31,294 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:47:31,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2025-03-17 06:47:31,317 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-03-17 06:47:31,325 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-03-17 06:47:31,325 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 06:47:31,325 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:31,326 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-17 06:47:31,326 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:47:31,382 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 06:47:31,382 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 06:47:31,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49869515] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:47:31,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 06:47:31,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 12 [2025-03-17 06:47:31,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493915208] [2025-03-17 06:47:31,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:47:31,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 06:47:31,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:47:31,383 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 06:47:31,383 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2025-03-17 06:47:31,388 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:47:31,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 90 transitions, 1278 flow. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 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 06:47:31,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:47:31,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:47:31,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:47:31,490 INFO L124 PetriNetUnfolderBase]: 248/556 cut-off events. [2025-03-17 06:47:31,491 INFO L125 PetriNetUnfolderBase]: For 3652/3652 co-relation queries the response was YES. [2025-03-17 06:47:31,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2912 conditions, 556 events. 248/556 cut-off events. For 3652/3652 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2679 event pairs, 41 based on Foata normal form. 6/562 useless extension candidates. Maximal degree in co-relation 2867. Up to 164 conditions per place. [2025-03-17 06:47:31,494 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 41 selfloop transitions, 8 changer transitions 55/105 dead transitions. [2025-03-17 06:47:31,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 105 transitions, 1539 flow [2025-03-17 06:47:31,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 06:47:31,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-17 06:47:31,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 75 transitions. [2025-03-17 06:47:31,495 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2025-03-17 06:47:31,495 INFO L175 Difference]: Start difference. First operand has 148 places, 90 transitions, 1278 flow. Second operand 9 states and 75 transitions. [2025-03-17 06:47:31,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 105 transitions, 1539 flow [2025-03-17 06:47:31,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 105 transitions, 1420 flow, removed 2 selfloop flow, removed 15 redundant places. [2025-03-17 06:47:31,507 INFO L231 Difference]: Finished difference. Result has 140 places, 45 transitions, 495 flow [2025-03-17 06:47:31,507 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1159, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=495, PETRI_PLACES=140, PETRI_TRANSITIONS=45} [2025-03-17 06:47:31,508 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 116 predicate places. [2025-03-17 06:47:31,508 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 45 transitions, 495 flow [2025-03-17 06:47:31,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 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 06:47:31,508 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:47:31,508 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:47:31,516 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2025-03-17 06:47:31,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2025-03-17 06:47:31,709 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:47:31,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:47:31,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1209739469, now seen corresponding path program 30 times [2025-03-17 06:47:31,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:47:31,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609731196] [2025-03-17 06:47:31,710 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 06:47:31,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:47:31,712 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 3 equivalence classes. [2025-03-17 06:47:31,714 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-03-17 06:47:31,714 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-03-17 06:47:31,714 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:31,769 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 06:47:31,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:47:31,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609731196] [2025-03-17 06:47:31,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609731196] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:47:31,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581463987] [2025-03-17 06:47:31,769 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 06:47:31,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:47:31,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:47:31,775 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:47:31,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2025-03-17 06:47:31,799 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 3 equivalence classes. [2025-03-17 06:47:31,807 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-03-17 06:47:31,807 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-03-17 06:47:31,807 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:31,808 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-17 06:47:31,808 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:47:31,860 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 06:47:31,861 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 06:47:31,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581463987] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:47:31,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 06:47:31,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 12 [2025-03-17 06:47:31,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647577850] [2025-03-17 06:47:31,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:47:31,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 06:47:31,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:47:31,861 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 06:47:31,861 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2025-03-17 06:47:31,866 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:47:31,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 45 transitions, 495 flow. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 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 06:47:31,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:47:31,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:47:31,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:47:31,944 INFO L124 PetriNetUnfolderBase]: 101/243 cut-off events. [2025-03-17 06:47:31,945 INFO L125 PetriNetUnfolderBase]: For 1032/1032 co-relation queries the response was YES. [2025-03-17 06:47:31,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1121 conditions, 243 events. 101/243 cut-off events. For 1032/1032 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 875 event pairs, 19 based on Foata normal form. 3/246 useless extension candidates. Maximal degree in co-relation 1077. Up to 60 conditions per place. [2025-03-17 06:47:31,946 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 23 selfloop transitions, 7 changer transitions 27/58 dead transitions. [2025-03-17 06:47:31,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 58 transitions, 637 flow [2025-03-17 06:47:31,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 06:47:31,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-17 06:47:31,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 67 transitions. [2025-03-17 06:47:31,947 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3383838383838384 [2025-03-17 06:47:31,947 INFO L175 Difference]: Start difference. First operand has 140 places, 45 transitions, 495 flow. Second operand 9 states and 67 transitions. [2025-03-17 06:47:31,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 58 transitions, 637 flow [2025-03-17 06:47:31,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 58 transitions, 467 flow, removed 13 selfloop flow, removed 33 redundant places. [2025-03-17 06:47:31,951 INFO L231 Difference]: Finished difference. Result has 95 places, 27 transitions, 188 flow [2025-03-17 06:47:31,951 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=188, PETRI_PLACES=95, PETRI_TRANSITIONS=27} [2025-03-17 06:47:31,951 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 71 predicate places. [2025-03-17 06:47:31,951 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 27 transitions, 188 flow [2025-03-17 06:47:31,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 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 06:47:31,951 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:47:31,951 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:47:31,957 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2025-03-17 06:47:32,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:47:32,152 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:47:32,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:47:32,153 INFO L85 PathProgramCache]: Analyzing trace with hash 330249449, now seen corresponding path program 31 times [2025-03-17 06:47:32,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:47:32,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236379065] [2025-03-17 06:47:32,153 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-17 06:47:32,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:47:32,156 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-17 06:47:32,157 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-17 06:47:32,157 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:47:32,157 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:32,241 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:32,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:47:32,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236379065] [2025-03-17 06:47:32,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236379065] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:47:32,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145635789] [2025-03-17 06:47:32,241 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-17 06:47:32,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:47:32,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:47:32,243 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:47:32,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2025-03-17 06:47:32,269 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-17 06:47:32,276 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-17 06:47:32,277 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:47:32,277 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:32,277 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-17 06:47:32,278 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:47:32,373 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:32,374 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:47:32,546 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:32,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145635789] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 06:47:32,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 06:47:32,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 27 [2025-03-17 06:47:32,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929698405] [2025-03-17 06:47:32,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 06:47:32,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-03-17 06:47:32,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:47:32,547 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-03-17 06:47:32,547 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=619, Unknown=0, NotChecked=0, Total=756 [2025-03-17 06:47:32,551 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:47:32,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 27 transitions, 188 flow. Second operand has 28 states, 28 states have (on average 4.357142857142857) internal successors, (122), 28 states have internal predecessors, (122), 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 06:47:32,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:47:32,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:47:32,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:47:32,747 INFO L124 PetriNetUnfolderBase]: 38/97 cut-off events. [2025-03-17 06:47:32,747 INFO L125 PetriNetUnfolderBase]: For 151/151 co-relation queries the response was YES. [2025-03-17 06:47:32,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 377 conditions, 97 events. 38/97 cut-off events. For 151/151 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 219 event pairs, 0 based on Foata normal form. 1/98 useless extension candidates. Maximal degree in co-relation 347. Up to 23 conditions per place. [2025-03-17 06:47:32,748 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 23 selfloop transitions, 10 changer transitions 13/47 dead transitions. [2025-03-17 06:47:32,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 47 transitions, 324 flow [2025-03-17 06:47:32,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-17 06:47:32,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-03-17 06:47:32,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 88 transitions. [2025-03-17 06:47:32,749 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2857142857142857 [2025-03-17 06:47:32,749 INFO L175 Difference]: Start difference. First operand has 95 places, 27 transitions, 188 flow. Second operand 14 states and 88 transitions. [2025-03-17 06:47:32,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 47 transitions, 324 flow [2025-03-17 06:47:32,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 47 transitions, 256 flow, removed 12 selfloop flow, removed 23 redundant places. [2025-03-17 06:47:32,750 INFO L231 Difference]: Finished difference. Result has 69 places, 23 transitions, 114 flow [2025-03-17 06:47:32,750 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=114, PETRI_PLACES=69, PETRI_TRANSITIONS=23} [2025-03-17 06:47:32,750 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 45 predicate places. [2025-03-17 06:47:32,750 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 23 transitions, 114 flow [2025-03-17 06:47:32,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.357142857142857) internal successors, (122), 28 states have internal predecessors, (122), 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 06:47:32,751 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:47:32,751 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:47:32,758 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2025-03-17 06:47:32,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2025-03-17 06:47:32,952 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 06:47:32,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:47:32,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1064781041, now seen corresponding path program 32 times [2025-03-17 06:47:32,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:47:32,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201112641] [2025-03-17 06:47:32,952 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 06:47:32,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:47:32,955 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-03-17 06:47:32,956 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-03-17 06:47:32,956 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 06:47:32,956 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:33,048 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:33,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:47:33,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201112641] [2025-03-17 06:47:33,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201112641] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:47:33,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045870488] [2025-03-17 06:47:33,049 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 06:47:33,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:47:33,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:47:33,050 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:47:33,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2025-03-17 06:47:33,072 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-03-17 06:47:33,080 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-03-17 06:47:33,080 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 06:47:33,080 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:47:33,080 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-17 06:47:33,081 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:47:33,177 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:33,177 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:47:33,344 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:47:33,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045870488] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 06:47:33,345 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 06:47:33,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 27 [2025-03-17 06:47:33,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595866504] [2025-03-17 06:47:33,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 06:47:33,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-03-17 06:47:33,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:47:33,345 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-03-17 06:47:33,346 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=625, Unknown=0, NotChecked=0, Total=756 [2025-03-17 06:47:33,351 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 06:47:33,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 23 transitions, 114 flow. Second operand has 28 states, 28 states have (on average 4.392857142857143) internal successors, (123), 28 states have internal predecessors, (123), 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 06:47:33,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:47:33,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 06:47:33,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:47:33,471 INFO L124 PetriNetUnfolderBase]: 24/61 cut-off events. [2025-03-17 06:47:33,471 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2025-03-17 06:47:33,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 61 events. 24/61 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 83 event pairs, 0 based on Foata normal form. 1/62 useless extension candidates. Maximal degree in co-relation 206. Up to 21 conditions per place. [2025-03-17 06:47:33,471 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 0 selfloop transitions, 0 changer transitions 33/33 dead transitions. [2025-03-17 06:47:33,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 33 transitions, 199 flow [2025-03-17 06:47:33,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-17 06:47:33,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-17 06:47:33,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 73 transitions. [2025-03-17 06:47:33,472 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.25524475524475526 [2025-03-17 06:47:33,472 INFO L175 Difference]: Start difference. First operand has 69 places, 23 transitions, 114 flow. Second operand 13 states and 73 transitions. [2025-03-17 06:47:33,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 33 transitions, 199 flow [2025-03-17 06:47:33,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 33 transitions, 162 flow, removed 4 selfloop flow, removed 15 redundant places. [2025-03-17 06:47:33,472 INFO L231 Difference]: Finished difference. Result has 59 places, 0 transitions, 0 flow [2025-03-17 06:47:33,473 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=0, PETRI_PLACES=59, PETRI_TRANSITIONS=0} [2025-03-17 06:47:33,473 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 35 predicate places. [2025-03-17 06:47:33,473 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 0 transitions, 0 flow [2025-03-17 06:47:33,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.392857142857143) internal successors, (123), 28 states have internal predecessors, (123), 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 06:47:33,475 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2025-03-17 06:47:33,475 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2025-03-17 06:47:33,475 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2025-03-17 06:47:33,481 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2025-03-17 06:47:33,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2025-03-17 06:47:33,676 INFO L422 BasicCegarLoop]: Path program histogram: [32, 17, 6, 6] [2025-03-17 06:47:33,678 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-17 06:47:33,678 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-17 06:47:33,681 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 06:47:33 BasicIcfg [2025-03-17 06:47:33,681 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-17 06:47:33,682 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-17 06:47:33,682 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-17 06:47:33,682 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-17 06:47:33,682 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:46:46" (3/4) ... [2025-03-17 06:47:33,684 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-17 06:47:33,686 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2025-03-17 06:47:33,686 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2025-03-17 06:47:33,690 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 36 nodes and edges [2025-03-17 06:47:33,691 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2025-03-17 06:47:33,691 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2025-03-17 06:47:33,691 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-17 06:47:33,742 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-17 06:47:33,743 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-17 06:47:33,743 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-17 06:47:33,744 INFO L158 Benchmark]: Toolchain (without parser) took 47759.11ms. Allocated memory was 142.6MB in the beginning and 587.2MB in the end (delta: 444.6MB). Free memory was 112.8MB in the beginning and 197.6MB in the end (delta: -84.8MB). Peak memory consumption was 358.4MB. Max. memory is 16.1GB. [2025-03-17 06:47:33,744 INFO L158 Benchmark]: CDTParser took 0.77ms. Allocated memory is still 201.3MB. Free memory is still 127.6MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 06:47:33,744 INFO L158 Benchmark]: CACSL2BoogieTranslator took 185.51ms. Allocated memory is still 142.6MB. Free memory was 112.4MB in the beginning and 101.2MB in the end (delta: 11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 06:47:33,745 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.66ms. Allocated memory is still 142.6MB. Free memory was 101.2MB in the beginning and 100.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 06:47:33,745 INFO L158 Benchmark]: Boogie Preprocessor took 32.85ms. Allocated memory is still 142.6MB. Free memory was 100.0MB in the beginning and 98.7MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 06:47:33,745 INFO L158 Benchmark]: IcfgBuilder took 337.55ms. Allocated memory is still 142.6MB. Free memory was 98.7MB in the beginning and 79.9MB in the end (delta: 18.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-17 06:47:33,746 INFO L158 Benchmark]: TraceAbstraction took 47115.32ms. Allocated memory was 142.6MB in the beginning and 587.2MB in the end (delta: 444.6MB). Free memory was 79.5MB in the beginning and 202.0MB in the end (delta: -122.5MB). Peak memory consumption was 324.9MB. Max. memory is 16.1GB. [2025-03-17 06:47:33,746 INFO L158 Benchmark]: Witness Printer took 61.17ms. Allocated memory is still 587.2MB. Free memory was 202.0MB in the beginning and 197.6MB in the end (delta: 4.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 06:47:33,747 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.77ms. Allocated memory is still 201.3MB. Free memory is still 127.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 185.51ms. Allocated memory is still 142.6MB. Free memory was 112.4MB in the beginning and 101.2MB in the end (delta: 11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.66ms. Allocated memory is still 142.6MB. Free memory was 101.2MB in the beginning and 100.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 32.85ms. Allocated memory is still 142.6MB. Free memory was 100.0MB in the beginning and 98.7MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 337.55ms. Allocated memory is still 142.6MB. Free memory was 98.7MB in the beginning and 79.9MB in the end (delta: 18.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 47115.32ms. Allocated memory was 142.6MB in the beginning and 587.2MB in the end (delta: 444.6MB). Free memory was 79.5MB in the beginning and 202.0MB in the end (delta: -122.5MB). Peak memory consumption was 324.9MB. Max. memory is 16.1GB. * Witness Printer took 61.17ms. Allocated memory is still 587.2MB. Free memory was 202.0MB in the beginning and 197.6MB in the end (delta: 4.4MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 74]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 33 locations, 36 edges, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 47.0s, OverallIterations: 61, TraceHistogramMax: 2, PathProgramHistogramMax: 32, EmptinessCheckTime: 0.0s, AutomataDifference: 24.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3399 SdHoareTripleChecker+Valid, 9.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3332 mSDsluCounter, 642 SdHoareTripleChecker+Invalid, 7.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 559 mSDsCounter, 769 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 21739 IncrementalHoareTripleChecker+Invalid, 22508 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 769 mSolverCounterUnsat, 83 mSDtfsCounter, 21739 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2258 GetRequests, 1057 SyntacticMatches, 11 SemanticMatches, 1190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8536 ImplicationChecksByTransitivity, 10.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7649occurred in iteration=43, InterpolantAutomatonStates: 782, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 12.3s InterpolantComputationTime, 1863 NumberOfCodeBlocks, 1863 NumberOfCodeBlocksAsserted, 175 NumberOfCheckSat, 2365 ConstructedInterpolants, 0 QuantifiedInterpolants, 12782 SizeOfPredicates, 115 NumberOfNonLiveVariables, 3719 ConjunctsInSsa, 453 ConjunctsInUnsatCore, 132 InterpolantComputations, 34 PerfectInterpolantSequences, 108/380 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-17 06:47:33,761 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE