./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/test-easy1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/test-easy1.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 935a7b7fee114f90b65d69dd73b2635844dd9aedca06c4cbc37a4ce046611c9d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 19:34:01,551 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 19:34:01,618 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 19:34:01,624 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 19:34:01,624 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 19:34:01,653 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 19:34:01,655 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 19:34:01,656 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 19:34:01,656 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 19:34:01,657 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 19:34:01,657 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 19:34:01,657 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 19:34:01,658 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 19:34:01,658 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 19:34:01,659 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 19:34:01,659 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 19:34:01,659 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 19:34:01,660 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 19:34:01,660 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 19:34:01,660 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 19:34:01,661 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 19:34:01,661 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 19:34:01,661 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 19:34:01,662 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 19:34:01,662 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 19:34:01,662 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 19:34:01,662 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 19:34:01,663 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 19:34:01,663 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 19:34:01,663 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 19:34:01,663 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 19:34:01,663 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 19:34:01,664 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:34:01,664 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 19:34:01,664 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 19:34:01,665 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 19:34:01,665 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 19:34:01,665 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 19:34:01,665 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 19:34:01,665 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 19:34:01,666 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 19:34:01,666 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 19:34:01,666 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 935a7b7fee114f90b65d69dd73b2635844dd9aedca06c4cbc37a4ce046611c9d [2024-11-16 19:34:01,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 19:34:01,995 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 19:34:01,999 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 19:34:02,000 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 19:34:02,004 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 19:34:02,005 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test-easy1.wvr.c [2024-11-16 19:34:03,408 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 19:34:03,623 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 19:34:03,624 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy1.wvr.c [2024-11-16 19:34:03,636 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e1dd6062/c03993b196ef4142b543de72e5a54730/FLAG56f87c5c5 [2024-11-16 19:34:03,999 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e1dd6062/c03993b196ef4142b543de72e5a54730 [2024-11-16 19:34:04,002 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 19:34:04,003 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 19:34:04,005 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 19:34:04,006 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 19:34:04,011 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 19:34:04,012 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:34:04" (1/1) ... [2024-11-16 19:34:04,012 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b1bc67b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:34:04, skipping insertion in model container [2024-11-16 19:34:04,012 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:34:04" (1/1) ... [2024-11-16 19:34:04,033 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 19:34:04,248 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-easy1.wvr.c[1902,1915] [2024-11-16 19:34:04,254 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:34:04,263 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 19:34:04,281 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-easy1.wvr.c[1902,1915] [2024-11-16 19:34:04,285 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:34:04,303 INFO L204 MainTranslator]: Completed translation [2024-11-16 19:34:04,303 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:34:04 WrapperNode [2024-11-16 19:34:04,304 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 19:34:04,305 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 19:34:04,305 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 19:34:04,306 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 19:34:04,313 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:34:04" (1/1) ... [2024-11-16 19:34:04,321 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:34:04" (1/1) ... [2024-11-16 19:34:04,335 INFO L138 Inliner]: procedures = 20, calls = 10, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 45 [2024-11-16 19:34:04,335 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 19:34:04,336 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 19:34:04,336 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 19:34:04,336 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 19:34:04,350 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:34:04" (1/1) ... [2024-11-16 19:34:04,351 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:34:04" (1/1) ... [2024-11-16 19:34:04,352 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:34:04" (1/1) ... [2024-11-16 19:34:04,365 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-16 19:34:04,365 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:34:04" (1/1) ... [2024-11-16 19:34:04,365 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:34:04" (1/1) ... [2024-11-16 19:34:04,368 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:34:04" (1/1) ... [2024-11-16 19:34:04,369 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:34:04" (1/1) ... [2024-11-16 19:34:04,370 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:34:04" (1/1) ... [2024-11-16 19:34:04,371 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:34:04" (1/1) ... [2024-11-16 19:34:04,374 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 19:34:04,377 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 19:34:04,377 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 19:34:04,377 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 19:34:04,378 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:34:04" (1/1) ... [2024-11-16 19:34:04,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:34:04,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:34:04,415 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 19:34:04,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 19:34:04,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 19:34:04,474 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-16 19:34:04,474 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-16 19:34:04,474 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-16 19:34:04,475 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-16 19:34:04,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 19:34:04,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 19:34:04,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 19:34:04,476 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-16 19:34:04,607 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 19:34:04,616 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 19:34:04,777 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-16 19:34:04,777 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 19:34:04,909 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 19:34:04,910 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 19:34:04,910 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:34:04 BoogieIcfgContainer [2024-11-16 19:34:04,910 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 19:34:04,912 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 19:34:04,913 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 19:34:04,916 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 19:34:04,916 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:34:04" (1/3) ... [2024-11-16 19:34:04,917 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43349d4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:34:04, skipping insertion in model container [2024-11-16 19:34:04,917 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:34:04" (2/3) ... [2024-11-16 19:34:04,917 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43349d4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:34:04, skipping insertion in model container [2024-11-16 19:34:04,917 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:34:04" (3/3) ... [2024-11-16 19:34:04,919 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy1.wvr.c [2024-11-16 19:34:04,931 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 19:34:04,932 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 19:34:04,932 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-16 19:34:04,972 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-16 19:34:05,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 27 places, 24 transitions, 62 flow [2024-11-16 19:34:05,038 INFO L124 PetriNetUnfolderBase]: 4/22 cut-off events. [2024-11-16 19:34:05,038 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-16 19:34:05,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 22 events. 4/22 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 17. Up to 2 conditions per place. [2024-11-16 19:34:05,041 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 24 transitions, 62 flow [2024-11-16 19:34:05,046 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 21 transitions, 54 flow [2024-11-16 19:34:05,057 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 19:34:05,063 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;@29e4e8c2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 19:34:05,064 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-16 19:34:05,072 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 19:34:05,073 INFO L124 PetriNetUnfolderBase]: 4/20 cut-off events. [2024-11-16 19:34:05,073 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-16 19:34:05,073 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:34:05,074 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:34:05,074 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:34:05,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:34:05,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1275485050, now seen corresponding path program 1 times [2024-11-16 19:34:05,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:34:05,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219719173] [2024-11-16 19:34:05,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:34:05,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:34:05,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:34:05,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:34:05,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:34:05,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219719173] [2024-11-16 19:34:05,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219719173] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:34:05,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:34:05,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:34:05,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808356732] [2024-11-16 19:34:05,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:34:05,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 19:34:05,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:34:05,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 19:34:05,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 19:34:05,309 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 24 [2024-11-16 19:34:05,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 21 transitions, 54 flow. Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:34:05,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:34:05,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 24 [2024-11-16 19:34:05,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:34:05,377 INFO L124 PetriNetUnfolderBase]: 40/87 cut-off events. [2024-11-16 19:34:05,377 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-16 19:34:05,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 87 events. 40/87 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 262 event pairs, 16 based on Foata normal form. 23/94 useless extension candidates. Maximal degree in co-relation 136. Up to 67 conditions per place. [2024-11-16 19:34:05,380 INFO L140 encePairwiseOnDemand]: 22/24 looper letters, 12 selfloop transitions, 0 changer transitions 0/19 dead transitions. [2024-11-16 19:34:05,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 19 transitions, 74 flow [2024-11-16 19:34:05,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 19:34:05,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-16 19:34:05,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 32 transitions. [2024-11-16 19:34:05,392 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-16 19:34:05,394 INFO L175 Difference]: Start difference. First operand has 24 places, 21 transitions, 54 flow. Second operand 2 states and 32 transitions. [2024-11-16 19:34:05,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 19 transitions, 74 flow [2024-11-16 19:34:05,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 19 transitions, 66 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-16 19:34:05,399 INFO L231 Difference]: Finished difference. Result has 21 places, 19 transitions, 42 flow [2024-11-16 19:34:05,400 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=42, PETRI_PLACES=21, PETRI_TRANSITIONS=19} [2024-11-16 19:34:05,406 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, -3 predicate places. [2024-11-16 19:34:05,406 INFO L471 AbstractCegarLoop]: Abstraction has has 21 places, 19 transitions, 42 flow [2024-11-16 19:34:05,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:34:05,407 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:34:05,407 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:34:05,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 19:34:05,408 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:34:05,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:34:05,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1264430196, now seen corresponding path program 1 times [2024-11-16 19:34:05,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:34:05,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143397374] [2024-11-16 19:34:05,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:34:05,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:34:05,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:34:05,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:34:05,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:34:05,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143397374] [2024-11-16 19:34:05,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143397374] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:34:05,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:34:05,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:34:05,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579823324] [2024-11-16 19:34:05,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:34:05,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:34:05,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:34:05,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:34:05,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:34:05,606 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 24 [2024-11-16 19:34:05,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 19 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:34:05,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:34:05,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 24 [2024-11-16 19:34:05,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:34:05,672 INFO L124 PetriNetUnfolderBase]: 59/136 cut-off events. [2024-11-16 19:34:05,673 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-16 19:34:05,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 136 events. 59/136 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 498 event pairs, 8 based on Foata normal form. 1/127 useless extension candidates. Maximal degree in co-relation 241. Up to 77 conditions per place. [2024-11-16 19:34:05,676 INFO L140 encePairwiseOnDemand]: 20/24 looper letters, 17 selfloop transitions, 3 changer transitions 1/28 dead transitions. [2024-11-16 19:34:05,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 28 transitions, 105 flow [2024-11-16 19:34:05,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:34:05,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:34:05,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2024-11-16 19:34:05,678 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6805555555555556 [2024-11-16 19:34:05,678 INFO L175 Difference]: Start difference. First operand has 21 places, 19 transitions, 42 flow. Second operand 3 states and 49 transitions. [2024-11-16 19:34:05,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 28 transitions, 105 flow [2024-11-16 19:34:05,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 28 transitions, 105 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 19:34:05,681 INFO L231 Difference]: Finished difference. Result has 24 places, 21 transitions, 61 flow [2024-11-16 19:34:05,681 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=61, PETRI_PLACES=24, PETRI_TRANSITIONS=21} [2024-11-16 19:34:05,682 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 0 predicate places. [2024-11-16 19:34:05,683 INFO L471 AbstractCegarLoop]: Abstraction has has 24 places, 21 transitions, 61 flow [2024-11-16 19:34:05,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:34:05,684 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:34:05,684 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:34:05,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 19:34:05,684 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:34:05,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:34:05,686 INFO L85 PathProgramCache]: Analyzing trace with hash -499448969, now seen corresponding path program 1 times [2024-11-16 19:34:05,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:34:05,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504501718] [2024-11-16 19:34:05,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:34:05,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:34:05,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:34:05,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:34:05,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:34:05,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504501718] [2024-11-16 19:34:05,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504501718] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:34:05,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:34:05,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:34:05,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116633451] [2024-11-16 19:34:05,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:34:05,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:34:05,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:34:05,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:34:05,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:34:05,808 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2024-11-16 19:34:05,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 21 transitions, 61 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:34:05,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:34:05,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2024-11-16 19:34:05,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:34:05,895 INFO L124 PetriNetUnfolderBase]: 96/180 cut-off events. [2024-11-16 19:34:05,895 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2024-11-16 19:34:05,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 405 conditions, 180 events. 96/180 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 596 event pairs, 16 based on Foata normal form. 9/183 useless extension candidates. Maximal degree in co-relation 400. Up to 117 conditions per place. [2024-11-16 19:34:05,899 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 16 selfloop transitions, 3 changer transitions 11/35 dead transitions. [2024-11-16 19:34:05,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 35 transitions, 153 flow [2024-11-16 19:34:05,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 19:34:05,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-16 19:34:05,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 60 transitions. [2024-11-16 19:34:05,903 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-11-16 19:34:05,903 INFO L175 Difference]: Start difference. First operand has 24 places, 21 transitions, 61 flow. Second operand 4 states and 60 transitions. [2024-11-16 19:34:05,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 35 transitions, 153 flow [2024-11-16 19:34:05,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 35 transitions, 150 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 19:34:05,905 INFO L231 Difference]: Finished difference. Result has 27 places, 21 transitions, 71 flow [2024-11-16 19:34:05,905 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=71, PETRI_PLACES=27, PETRI_TRANSITIONS=21} [2024-11-16 19:34:05,906 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 3 predicate places. [2024-11-16 19:34:05,906 INFO L471 AbstractCegarLoop]: Abstraction has has 27 places, 21 transitions, 71 flow [2024-11-16 19:34:05,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:34:05,906 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:34:05,906 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:34:05,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 19:34:05,907 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:34:05,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:34:05,910 INFO L85 PathProgramCache]: Analyzing trace with hash 564176481, now seen corresponding path program 2 times [2024-11-16 19:34:05,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:34:05,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332242517] [2024-11-16 19:34:05,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:34:05,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:34:05,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:34:06,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:34:06,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:34:06,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332242517] [2024-11-16 19:34:06,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332242517] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:34:06,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566388553] [2024-11-16 19:34:06,036 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 19:34:06,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:34:06,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:34:06,038 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:34:06,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 19:34:06,101 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 19:34:06,102 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:34:06,103 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 19:34:06,107 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:34:06,225 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:34:06,225 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:34:06,300 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:34:06,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566388553] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 19:34:06,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 19:34:06,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 6 [2024-11-16 19:34:06,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006309829] [2024-11-16 19:34:06,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:34:06,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:34:06,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:34:06,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:34:06,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-16 19:34:06,305 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2024-11-16 19:34:06,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 21 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:34:06,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:34:06,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2024-11-16 19:34:06,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:34:06,392 INFO L124 PetriNetUnfolderBase]: 82/165 cut-off events. [2024-11-16 19:34:06,393 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2024-11-16 19:34:06,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 411 conditions, 165 events. 82/165 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 506 event pairs, 6 based on Foata normal form. 7/169 useless extension candidates. Maximal degree in co-relation 405. Up to 77 conditions per place. [2024-11-16 19:34:06,396 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 26 selfloop transitions, 6 changer transitions 0/37 dead transitions. [2024-11-16 19:34:06,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 37 transitions, 183 flow [2024-11-16 19:34:06,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 19:34:06,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-16 19:34:06,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 60 transitions. [2024-11-16 19:34:06,400 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-11-16 19:34:06,400 INFO L175 Difference]: Start difference. First operand has 27 places, 21 transitions, 71 flow. Second operand 4 states and 60 transitions. [2024-11-16 19:34:06,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 37 transitions, 183 flow [2024-11-16 19:34:06,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 37 transitions, 173 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-16 19:34:06,401 INFO L231 Difference]: Finished difference. Result has 29 places, 24 transitions, 100 flow [2024-11-16 19:34:06,402 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=100, PETRI_PLACES=29, PETRI_TRANSITIONS=24} [2024-11-16 19:34:06,404 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 5 predicate places. [2024-11-16 19:34:06,405 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 24 transitions, 100 flow [2024-11-16 19:34:06,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:34:06,405 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:34:06,405 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:34:06,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-16 19:34:06,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:34:06,606 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:34:06,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:34:06,607 INFO L85 PathProgramCache]: Analyzing trace with hash 955069121, now seen corresponding path program 1 times [2024-11-16 19:34:06,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:34:06,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150758005] [2024-11-16 19:34:06,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:34:06,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:34:06,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:34:06,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:34:06,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:34:06,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150758005] [2024-11-16 19:34:06,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150758005] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:34:06,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542029286] [2024-11-16 19:34:06,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:34:06,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:34:06,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:34:06,700 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:34:06,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 19:34:06,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:34:06,750 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 19:34:06,751 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:34:06,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:34:06,813 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:34:06,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:34:06,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542029286] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 19:34:06,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 19:34:06,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 6 [2024-11-16 19:34:06,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260302679] [2024-11-16 19:34:06,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:34:06,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:34:06,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:34:06,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:34:06,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-16 19:34:06,861 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2024-11-16 19:34:06,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:34:06,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:34:06,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2024-11-16 19:34:06,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:34:06,926 INFO L124 PetriNetUnfolderBase]: 89/190 cut-off events. [2024-11-16 19:34:06,926 INFO L125 PetriNetUnfolderBase]: For 209/209 co-relation queries the response was YES. [2024-11-16 19:34:06,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 527 conditions, 190 events. 89/190 cut-off events. For 209/209 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 616 event pairs, 13 based on Foata normal form. 6/193 useless extension candidates. Maximal degree in co-relation 520. Up to 100 conditions per place. [2024-11-16 19:34:06,930 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 28 selfloop transitions, 6 changer transitions 0/39 dead transitions. [2024-11-16 19:34:06,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 39 transitions, 218 flow [2024-11-16 19:34:06,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 19:34:06,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-16 19:34:06,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 59 transitions. [2024-11-16 19:34:06,934 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6145833333333334 [2024-11-16 19:34:06,934 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 100 flow. Second operand 4 states and 59 transitions. [2024-11-16 19:34:06,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 39 transitions, 218 flow [2024-11-16 19:34:06,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 39 transitions, 218 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 19:34:06,940 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 139 flow [2024-11-16 19:34:06,940 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=139, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2024-11-16 19:34:06,941 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 10 predicate places. [2024-11-16 19:34:06,941 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 139 flow [2024-11-16 19:34:06,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:34:06,942 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:34:06,942 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:34:06,959 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 19:34:07,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:34:07,143 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:34:07,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:34:07,143 INFO L85 PathProgramCache]: Analyzing trace with hash -61579152, now seen corresponding path program 1 times [2024-11-16 19:34:07,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:34:07,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856141760] [2024-11-16 19:34:07,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:34:07,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:34:07,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:34:07,283 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:34:07,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:34:07,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856141760] [2024-11-16 19:34:07,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856141760] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:34:07,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805885063] [2024-11-16 19:34:07,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:34:07,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:34:07,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:34:07,287 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:34:07,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 19:34:07,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:34:07,335 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-16 19:34:07,337 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:34:07,514 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:34:07,515 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:34:07,688 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:34:07,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805885063] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:34:07,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:34:07,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 11 [2024-11-16 19:34:07,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329929398] [2024-11-16 19:34:07,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:34:07,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-16 19:34:07,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:34:07,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-16 19:34:07,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2024-11-16 19:34:07,694 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2024-11-16 19:34:07,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 139 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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) [2024-11-16 19:34:07,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:34:07,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2024-11-16 19:34:07,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:34:07,871 INFO L124 PetriNetUnfolderBase]: 188/389 cut-off events. [2024-11-16 19:34:07,872 INFO L125 PetriNetUnfolderBase]: For 825/825 co-relation queries the response was YES. [2024-11-16 19:34:07,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1240 conditions, 389 events. 188/389 cut-off events. For 825/825 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1731 event pairs, 8 based on Foata normal form. 25/411 useless extension candidates. Maximal degree in co-relation 1231. Up to 100 conditions per place. [2024-11-16 19:34:07,876 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 45 selfloop transitions, 17 changer transitions 10/77 dead transitions. [2024-11-16 19:34:07,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 77 transitions, 513 flow [2024-11-16 19:34:07,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 19:34:07,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-16 19:34:07,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 130 transitions. [2024-11-16 19:34:07,878 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6018518518518519 [2024-11-16 19:34:07,878 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 139 flow. Second operand 9 states and 130 transitions. [2024-11-16 19:34:07,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 77 transitions, 513 flow [2024-11-16 19:34:07,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 77 transitions, 511 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-16 19:34:07,883 INFO L231 Difference]: Finished difference. Result has 48 places, 40 transitions, 308 flow [2024-11-16 19:34:07,883 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=308, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2024-11-16 19:34:07,884 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 24 predicate places. [2024-11-16 19:34:07,884 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 308 flow [2024-11-16 19:34:07,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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) [2024-11-16 19:34:07,885 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:34:07,885 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:34:07,903 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 19:34:08,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:34:08,090 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:34:08,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:34:08,091 INFO L85 PathProgramCache]: Analyzing trace with hash 718966250, now seen corresponding path program 2 times [2024-11-16 19:34:08,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:34:08,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338620308] [2024-11-16 19:34:08,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:34:08,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:34:08,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:34:08,209 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:34:08,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:34:08,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338620308] [2024-11-16 19:34:08,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338620308] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:34:08,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264029606] [2024-11-16 19:34:08,211 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 19:34:08,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:34:08,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:34:08,214 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:34:08,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 19:34:08,266 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 19:34:08,266 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:34:08,267 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 19:34:08,268 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:34:08,363 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:34:08,364 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:34:08,397 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:34:08,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264029606] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:34:08,398 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:34:08,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 7 [2024-11-16 19:34:08,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799240234] [2024-11-16 19:34:08,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:34:08,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 19:34:08,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:34:08,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 19:34:08,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-16 19:34:08,414 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2024-11-16 19:34:08,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 308 flow. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:34:08,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:34:08,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2024-11-16 19:34:08,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:34:08,572 INFO L124 PetriNetUnfolderBase]: 254/532 cut-off events. [2024-11-16 19:34:08,572 INFO L125 PetriNetUnfolderBase]: For 2442/2442 co-relation queries the response was YES. [2024-11-16 19:34:08,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2049 conditions, 532 events. 254/532 cut-off events. For 2442/2442 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2594 event pairs, 35 based on Foata normal form. 8/537 useless extension candidates. Maximal degree in co-relation 2034. Up to 275 conditions per place. [2024-11-16 19:34:08,577 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 56 selfloop transitions, 15 changer transitions 1/77 dead transitions. [2024-11-16 19:34:08,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 77 transitions, 677 flow [2024-11-16 19:34:08,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:34:08,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:34:08,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 91 transitions. [2024-11-16 19:34:08,578 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6319444444444444 [2024-11-16 19:34:08,579 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 308 flow. Second operand 6 states and 91 transitions. [2024-11-16 19:34:08,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 77 transitions, 677 flow [2024-11-16 19:34:08,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 77 transitions, 610 flow, removed 32 selfloop flow, removed 2 redundant places. [2024-11-16 19:34:08,587 INFO L231 Difference]: Finished difference. Result has 53 places, 51 transitions, 410 flow [2024-11-16 19:34:08,589 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=410, PETRI_PLACES=53, PETRI_TRANSITIONS=51} [2024-11-16 19:34:08,589 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 29 predicate places. [2024-11-16 19:34:08,590 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 410 flow [2024-11-16 19:34:08,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:34:08,592 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:34:08,592 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:34:08,609 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-16 19:34:08,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:34:08,793 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:34:08,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:34:08,793 INFO L85 PathProgramCache]: Analyzing trace with hash 629629655, now seen corresponding path program 3 times [2024-11-16 19:34:08,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:34:08,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234767292] [2024-11-16 19:34:08,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:34:08,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:34:08,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:34:08,859 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:34:08,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:34:08,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234767292] [2024-11-16 19:34:08,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234767292] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:34:08,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187917280] [2024-11-16 19:34:08,860 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 19:34:08,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:34:08,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:34:08,863 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:34:08,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 19:34:08,920 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-16 19:34:08,920 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:34:08,921 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-16 19:34:08,922 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:34:08,983 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:34:08,983 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 19:34:08,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187917280] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:34:08,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 19:34:08,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 10 [2024-11-16 19:34:08,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221823615] [2024-11-16 19:34:08,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:34:08,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 19:34:08,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:34:08,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 19:34:08,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-16 19:34:08,992 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2024-11-16 19:34:08,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 51 transitions, 410 flow. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 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) [2024-11-16 19:34:08,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:34:08,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2024-11-16 19:34:08,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:34:09,086 INFO L124 PetriNetUnfolderBase]: 254/537 cut-off events. [2024-11-16 19:34:09,086 INFO L125 PetriNetUnfolderBase]: For 2658/2658 co-relation queries the response was YES. [2024-11-16 19:34:09,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2115 conditions, 537 events. 254/537 cut-off events. For 2658/2658 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2662 event pairs, 24 based on Foata normal form. 1/525 useless extension candidates. Maximal degree in co-relation 2097. Up to 178 conditions per place. [2024-11-16 19:34:09,091 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 46 selfloop transitions, 4 changer transitions 18/73 dead transitions. [2024-11-16 19:34:09,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 73 transitions, 678 flow [2024-11-16 19:34:09,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:34:09,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:34:09,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 77 transitions. [2024-11-16 19:34:09,094 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5347222222222222 [2024-11-16 19:34:09,094 INFO L175 Difference]: Start difference. First operand has 53 places, 51 transitions, 410 flow. Second operand 6 states and 77 transitions. [2024-11-16 19:34:09,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 73 transitions, 678 flow [2024-11-16 19:34:09,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 73 transitions, 653 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-11-16 19:34:09,103 INFO L231 Difference]: Finished difference. Result has 60 places, 46 transitions, 364 flow [2024-11-16 19:34:09,103 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=364, PETRI_PLACES=60, PETRI_TRANSITIONS=46} [2024-11-16 19:34:09,104 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 36 predicate places. [2024-11-16 19:34:09,105 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 46 transitions, 364 flow [2024-11-16 19:34:09,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 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) [2024-11-16 19:34:09,106 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:34:09,106 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:34:09,123 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-16 19:34:09,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:34:09,307 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:34:09,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:34:09,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1549910699, now seen corresponding path program 4 times [2024-11-16 19:34:09,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:34:09,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781539244] [2024-11-16 19:34:09,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:34:09,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:34:09,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:34:09,361 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:34:09,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:34:09,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781539244] [2024-11-16 19:34:09,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781539244] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:34:09,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095949700] [2024-11-16 19:34:09,362 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 19:34:09,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:34:09,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:34:09,364 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:34:09,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 19:34:09,423 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 19:34:09,423 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:34:09,424 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-16 19:34:09,425 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:34:09,490 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:34:09,490 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:34:09,561 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:34:09,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095949700] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:34:09,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:34:09,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-16 19:34:09,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480585297] [2024-11-16 19:34:09,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:34:09,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-16 19:34:09,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:34:09,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-16 19:34:09,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2024-11-16 19:34:09,566 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2024-11-16 19:34:09,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 46 transitions, 364 flow. Second operand has 12 states, 12 states have (on average 9.583333333333334) internal successors, (115), 12 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:34:09,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:34:09,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2024-11-16 19:34:09,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:34:09,785 INFO L124 PetriNetUnfolderBase]: 332/721 cut-off events. [2024-11-16 19:34:09,786 INFO L125 PetriNetUnfolderBase]: For 5335/5335 co-relation queries the response was YES. [2024-11-16 19:34:09,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2940 conditions, 721 events. 332/721 cut-off events. For 5335/5335 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3825 event pairs, 20 based on Foata normal form. 7/725 useless extension candidates. Maximal degree in co-relation 2918. Up to 135 conditions per place. [2024-11-16 19:34:09,792 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 67 selfloop transitions, 43 changer transitions 0/115 dead transitions. [2024-11-16 19:34:09,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 115 transitions, 1041 flow [2024-11-16 19:34:09,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-16 19:34:09,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-16 19:34:09,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 154 transitions. [2024-11-16 19:34:09,793 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-16 19:34:09,793 INFO L175 Difference]: Start difference. First operand has 60 places, 46 transitions, 364 flow. Second operand 11 states and 154 transitions. [2024-11-16 19:34:09,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 115 transitions, 1041 flow [2024-11-16 19:34:09,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 115 transitions, 972 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-11-16 19:34:09,803 INFO L231 Difference]: Finished difference. Result has 65 places, 68 transitions, 748 flow [2024-11-16 19:34:09,803 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=748, PETRI_PLACES=65, PETRI_TRANSITIONS=68} [2024-11-16 19:34:09,804 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 41 predicate places. [2024-11-16 19:34:09,804 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 68 transitions, 748 flow [2024-11-16 19:34:09,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.583333333333334) internal successors, (115), 12 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:34:09,804 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:34:09,805 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:34:09,822 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-16 19:34:10,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:34:10,009 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:34:10,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:34:10,010 INFO L85 PathProgramCache]: Analyzing trace with hash -899870053, now seen corresponding path program 5 times [2024-11-16 19:34:10,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:34:10,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438973628] [2024-11-16 19:34:10,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:34:10,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:34:10,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:34:10,064 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:34:10,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:34:10,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438973628] [2024-11-16 19:34:10,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438973628] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:34:10,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562276849] [2024-11-16 19:34:10,065 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 19:34:10,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:34:10,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:34:10,067 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:34:10,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 19:34:10,113 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-16 19:34:10,113 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:34:10,114 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-16 19:34:10,115 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:34:10,165 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:34:10,165 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:34:10,225 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:34:10,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562276849] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:34:10,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:34:10,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-16 19:34:10,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774778962] [2024-11-16 19:34:10,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:34:10,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 19:34:10,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:34:10,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 19:34:10,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-11-16 19:34:10,230 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2024-11-16 19:34:10,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 68 transitions, 748 flow. Second operand has 10 states, 10 states have (on average 9.9) internal successors, (99), 10 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) [2024-11-16 19:34:10,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:34:10,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2024-11-16 19:34:10,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:34:10,460 INFO L124 PetriNetUnfolderBase]: 455/988 cut-off events. [2024-11-16 19:34:10,460 INFO L125 PetriNetUnfolderBase]: For 9534/9534 co-relation queries the response was YES. [2024-11-16 19:34:10,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4507 conditions, 988 events. 455/988 cut-off events. For 9534/9534 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5724 event pairs, 41 based on Foata normal form. 30/1015 useless extension candidates. Maximal degree in co-relation 4485. Up to 374 conditions per place. [2024-11-16 19:34:10,468 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 90 selfloop transitions, 30 changer transitions 8/133 dead transitions. [2024-11-16 19:34:10,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 133 transitions, 1645 flow [2024-11-16 19:34:10,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 19:34:10,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-16 19:34:10,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-11-16 19:34:10,469 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-11-16 19:34:10,469 INFO L175 Difference]: Start difference. First operand has 65 places, 68 transitions, 748 flow. Second operand 10 states and 132 transitions. [2024-11-16 19:34:10,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 133 transitions, 1645 flow [2024-11-16 19:34:10,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 133 transitions, 1516 flow, removed 63 selfloop flow, removed 1 redundant places. [2024-11-16 19:34:10,489 INFO L231 Difference]: Finished difference. Result has 80 places, 90 transitions, 1156 flow [2024-11-16 19:34:10,489 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=675, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1156, PETRI_PLACES=80, PETRI_TRANSITIONS=90} [2024-11-16 19:34:10,490 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 56 predicate places. [2024-11-16 19:34:10,490 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 90 transitions, 1156 flow [2024-11-16 19:34:10,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.9) internal successors, (99), 10 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) [2024-11-16 19:34:10,490 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:34:10,491 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:34:10,508 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-16 19:34:10,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:34:10,692 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:34:10,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:34:10,693 INFO L85 PathProgramCache]: Analyzing trace with hash -604198757, now seen corresponding path program 6 times [2024-11-16 19:34:10,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:34:10,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499989773] [2024-11-16 19:34:10,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:34:10,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:34:10,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:34:10,742 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:34:10,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:34:10,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499989773] [2024-11-16 19:34:10,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499989773] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:34:10,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377806082] [2024-11-16 19:34:10,743 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 19:34:10,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:34:10,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:34:10,746 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:34:10,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-16 19:34:10,793 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-16 19:34:10,794 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:34:10,794 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-16 19:34:10,795 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:34:10,854 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:34:10,854 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:34:10,920 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:34:10,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377806082] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:34:10,920 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:34:10,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-16 19:34:10,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334716015] [2024-11-16 19:34:10,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:34:10,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-16 19:34:10,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:34:10,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-16 19:34:10,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2024-11-16 19:34:10,924 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2024-11-16 19:34:10,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 90 transitions, 1156 flow. Second operand has 12 states, 12 states have (on average 9.583333333333334) internal successors, (115), 12 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:34:10,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:34:10,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2024-11-16 19:34:10,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:34:11,221 INFO L124 PetriNetUnfolderBase]: 480/1036 cut-off events. [2024-11-16 19:34:11,221 INFO L125 PetriNetUnfolderBase]: For 12218/12218 co-relation queries the response was YES. [2024-11-16 19:34:11,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4947 conditions, 1036 events. 480/1036 cut-off events. For 12218/12218 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 5952 event pairs, 28 based on Foata normal form. 22/1055 useless extension candidates. Maximal degree in co-relation 4918. Up to 205 conditions per place. [2024-11-16 19:34:11,230 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 87 selfloop transitions, 51 changer transitions 3/146 dead transitions. [2024-11-16 19:34:11,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 146 transitions, 1942 flow [2024-11-16 19:34:11,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 19:34:11,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-16 19:34:11,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 125 transitions. [2024-11-16 19:34:11,232 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5787037037037037 [2024-11-16 19:34:11,232 INFO L175 Difference]: Start difference. First operand has 80 places, 90 transitions, 1156 flow. Second operand 9 states and 125 transitions. [2024-11-16 19:34:11,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 146 transitions, 1942 flow [2024-11-16 19:34:11,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 146 transitions, 1798 flow, removed 70 selfloop flow, removed 2 redundant places. [2024-11-16 19:34:11,257 INFO L231 Difference]: Finished difference. Result has 90 places, 105 transitions, 1520 flow [2024-11-16 19:34:11,258 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=930, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1520, PETRI_PLACES=90, PETRI_TRANSITIONS=105} [2024-11-16 19:34:11,259 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 66 predicate places. [2024-11-16 19:34:11,259 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 105 transitions, 1520 flow [2024-11-16 19:34:11,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.583333333333334) internal successors, (115), 12 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:34:11,259 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:34:11,259 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:34:11,278 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-16 19:34:11,464 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,SelfDestructingSolverStorable10 [2024-11-16 19:34:11,465 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:34:11,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:34:11,466 INFO L85 PathProgramCache]: Analyzing trace with hash -758684309, now seen corresponding path program 7 times [2024-11-16 19:34:11,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:34:11,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100343251] [2024-11-16 19:34:11,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:34:11,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:34:11,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:34:11,533 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:34:11,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:34:11,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100343251] [2024-11-16 19:34:11,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100343251] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:34:11,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189300669] [2024-11-16 19:34:11,534 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 19:34:11,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:34:11,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:34:11,536 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:34:11,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-16 19:34:11,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:34:11,583 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-16 19:34:11,584 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:34:11,643 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:34:11,644 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:34:11,707 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:34:11,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189300669] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:34:11,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:34:11,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-16 19:34:11,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783360643] [2024-11-16 19:34:11,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:34:11,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-16 19:34:11,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:34:11,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-16 19:34:11,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-11-16 19:34:11,719 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2024-11-16 19:34:11,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 105 transitions, 1520 flow. Second operand has 12 states, 12 states have (on average 9.583333333333334) internal successors, (115), 12 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:34:11,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:34:11,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2024-11-16 19:34:11,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:34:11,981 INFO L124 PetriNetUnfolderBase]: 509/1087 cut-off events. [2024-11-16 19:34:11,981 INFO L125 PetriNetUnfolderBase]: For 14358/14358 co-relation queries the response was YES. [2024-11-16 19:34:11,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5621 conditions, 1087 events. 509/1087 cut-off events. For 14358/14358 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 6280 event pairs, 50 based on Foata normal form. 30/1114 useless extension candidates. Maximal degree in co-relation 5588. Up to 380 conditions per place. [2024-11-16 19:34:11,990 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 101 selfloop transitions, 42 changer transitions 5/153 dead transitions. [2024-11-16 19:34:11,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 153 transitions, 2359 flow [2024-11-16 19:34:11,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 19:34:11,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-16 19:34:11,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-11-16 19:34:11,992 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-11-16 19:34:11,992 INFO L175 Difference]: Start difference. First operand has 90 places, 105 transitions, 1520 flow. Second operand 10 states and 126 transitions. [2024-11-16 19:34:11,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 153 transitions, 2359 flow [2024-11-16 19:34:12,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 153 transitions, 2179 flow, removed 83 selfloop flow, removed 2 redundant places. [2024-11-16 19:34:12,022 INFO L231 Difference]: Finished difference. Result has 102 places, 120 transitions, 1834 flow [2024-11-16 19:34:12,022 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1358, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1834, PETRI_PLACES=102, PETRI_TRANSITIONS=120} [2024-11-16 19:34:12,023 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 78 predicate places. [2024-11-16 19:34:12,023 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 120 transitions, 1834 flow [2024-11-16 19:34:12,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.583333333333334) internal successors, (115), 12 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:34:12,023 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:34:12,024 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:34:12,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-16 19:34:12,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:34:12,228 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:34:12,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:34:12,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1230219147, now seen corresponding path program 8 times [2024-11-16 19:34:12,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:34:12,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467464480] [2024-11-16 19:34:12,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:34:12,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:34:12,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:34:12,280 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:34:12,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:34:12,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467464480] [2024-11-16 19:34:12,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467464480] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:34:12,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217457304] [2024-11-16 19:34:12,281 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 19:34:12,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:34:12,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:34:12,284 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:34:12,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-16 19:34:12,333 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 19:34:12,333 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:34:12,334 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-16 19:34:12,335 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:34:12,400 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:34:12,400 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:34:12,460 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:34:12,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217457304] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:34:12,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:34:12,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-16 19:34:12,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648113970] [2024-11-16 19:34:12,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:34:12,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-16 19:34:12,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:34:12,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-16 19:34:12,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-16 19:34:12,466 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2024-11-16 19:34:12,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 120 transitions, 1834 flow. Second operand has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 11 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) [2024-11-16 19:34:12,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:34:12,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2024-11-16 19:34:12,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:34:12,779 INFO L124 PetriNetUnfolderBase]: 488/1062 cut-off events. [2024-11-16 19:34:12,779 INFO L125 PetriNetUnfolderBase]: For 13211/13211 co-relation queries the response was YES. [2024-11-16 19:34:12,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5554 conditions, 1062 events. 488/1062 cut-off events. For 13211/13211 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 6174 event pairs, 43 based on Foata normal form. 16/1075 useless extension candidates. Maximal degree in co-relation 5516. Up to 430 conditions per place. [2024-11-16 19:34:12,790 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 100 selfloop transitions, 36 changer transitions 10/151 dead transitions. [2024-11-16 19:34:12,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 151 transitions, 2410 flow [2024-11-16 19:34:12,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-16 19:34:12,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-16 19:34:12,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 150 transitions. [2024-11-16 19:34:12,792 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4807692307692308 [2024-11-16 19:34:12,792 INFO L175 Difference]: Start difference. First operand has 102 places, 120 transitions, 1834 flow. Second operand 13 states and 150 transitions. [2024-11-16 19:34:12,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 151 transitions, 2410 flow [2024-11-16 19:34:12,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 151 transitions, 2282 flow, removed 58 selfloop flow, removed 3 redundant places. [2024-11-16 19:34:12,827 INFO L231 Difference]: Finished difference. Result has 117 places, 121 transitions, 1873 flow [2024-11-16 19:34:12,828 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1668, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1873, PETRI_PLACES=117, PETRI_TRANSITIONS=121} [2024-11-16 19:34:12,829 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 93 predicate places. [2024-11-16 19:34:12,829 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 121 transitions, 1873 flow [2024-11-16 19:34:12,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 11 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) [2024-11-16 19:34:12,830 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:34:12,830 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:34:12,847 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-16 19:34:13,031 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,SelfDestructingSolverStorable12 [2024-11-16 19:34:13,031 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:34:13,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:34:13,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1834722516, now seen corresponding path program 9 times [2024-11-16 19:34:13,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:34:13,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013163613] [2024-11-16 19:34:13,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:34:13,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:34:13,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:34:13,168 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:34:13,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:34:13,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013163613] [2024-11-16 19:34:13,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013163613] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:34:13,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765154378] [2024-11-16 19:34:13,170 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 19:34:13,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:34:13,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:34:13,173 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:34:13,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-16 19:34:13,222 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-16 19:34:13,222 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:34:13,223 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-16 19:34:13,228 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:34:13,287 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 19:34:13,287 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 19:34:13,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765154378] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:34:13,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 19:34:13,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2024-11-16 19:34:13,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707902458] [2024-11-16 19:34:13,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:34:13,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 19:34:13,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:34:13,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 19:34:13,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-16 19:34:13,293 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2024-11-16 19:34:13,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 121 transitions, 1873 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:34:13,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:34:13,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2024-11-16 19:34:13,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:34:13,464 INFO L124 PetriNetUnfolderBase]: 474/1024 cut-off events. [2024-11-16 19:34:13,464 INFO L125 PetriNetUnfolderBase]: For 13296/13296 co-relation queries the response was YES. [2024-11-16 19:34:13,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5397 conditions, 1024 events. 474/1024 cut-off events. For 13296/13296 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5957 event pairs, 11 based on Foata normal form. 6/1025 useless extension candidates. Maximal degree in co-relation 5353. Up to 325 conditions per place. [2024-11-16 19:34:13,474 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 88 selfloop transitions, 13 changer transitions 41/147 dead transitions. [2024-11-16 19:34:13,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 147 transitions, 2398 flow [2024-11-16 19:34:13,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:34:13,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:34:13,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 78 transitions. [2024-11-16 19:34:13,475 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-11-16 19:34:13,475 INFO L175 Difference]: Start difference. First operand has 117 places, 121 transitions, 1873 flow. Second operand 6 states and 78 transitions. [2024-11-16 19:34:13,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 147 transitions, 2398 flow [2024-11-16 19:34:13,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 147 transitions, 2330 flow, removed 31 selfloop flow, removed 3 redundant places. [2024-11-16 19:34:13,520 INFO L231 Difference]: Finished difference. Result has 120 places, 98 transitions, 1508 flow [2024-11-16 19:34:13,520 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1809, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1508, PETRI_PLACES=120, PETRI_TRANSITIONS=98} [2024-11-16 19:34:13,521 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 96 predicate places. [2024-11-16 19:34:13,521 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 98 transitions, 1508 flow [2024-11-16 19:34:13,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:34:13,521 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:34:13,521 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:34:13,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-16 19:34:13,722 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,SelfDestructingSolverStorable13 [2024-11-16 19:34:13,722 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:34:13,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:34:13,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1380712294, now seen corresponding path program 10 times [2024-11-16 19:34:13,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:34:13,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409727291] [2024-11-16 19:34:13,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:34:13,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:34:13,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:34:13,826 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:34:13,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:34:13,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409727291] [2024-11-16 19:34:13,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409727291] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:34:13,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400677040] [2024-11-16 19:34:13,827 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 19:34:13,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:34:13,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:34:13,829 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:34:13,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-16 19:34:13,875 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 19:34:13,875 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:34:13,876 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-16 19:34:13,877 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:34:14,029 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:34:14,031 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:34:14,205 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:34:14,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400677040] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:34:14,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:34:14,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 17 [2024-11-16 19:34:14,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120237795] [2024-11-16 19:34:14,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:34:14,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-16 19:34:14,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:34:14,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-16 19:34:14,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2024-11-16 19:34:14,217 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2024-11-16 19:34:14,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 98 transitions, 1508 flow. Second operand has 18 states, 18 states have (on average 9.333333333333334) internal successors, (168), 18 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:34:14,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:34:14,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2024-11-16 19:34:14,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:34:14,575 INFO L124 PetriNetUnfolderBase]: 352/790 cut-off events. [2024-11-16 19:34:14,575 INFO L125 PetriNetUnfolderBase]: For 14623/14623 co-relation queries the response was YES. [2024-11-16 19:34:14,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4572 conditions, 790 events. 352/790 cut-off events. For 14623/14623 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4500 event pairs, 9 based on Foata normal form. 20/807 useless extension candidates. Maximal degree in co-relation 4525. Up to 275 conditions per place. [2024-11-16 19:34:14,584 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 88 selfloop transitions, 41 changer transitions 32/166 dead transitions. [2024-11-16 19:34:14,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 166 transitions, 2554 flow [2024-11-16 19:34:14,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-16 19:34:14,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-16 19:34:14,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 208 transitions. [2024-11-16 19:34:14,586 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5098039215686274 [2024-11-16 19:34:14,586 INFO L175 Difference]: Start difference. First operand has 120 places, 98 transitions, 1508 flow. Second operand 17 states and 208 transitions. [2024-11-16 19:34:14,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 166 transitions, 2554 flow [2024-11-16 19:34:14,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 166 transitions, 2318 flow, removed 35 selfloop flow, removed 15 redundant places. [2024-11-16 19:34:14,618 INFO L231 Difference]: Finished difference. Result has 127 places, 114 transitions, 1731 flow [2024-11-16 19:34:14,619 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1370, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1731, PETRI_PLACES=127, PETRI_TRANSITIONS=114} [2024-11-16 19:34:14,620 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 103 predicate places. [2024-11-16 19:34:14,620 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 114 transitions, 1731 flow [2024-11-16 19:34:14,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 9.333333333333334) internal successors, (168), 18 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:34:14,621 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:34:14,621 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:34:14,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-16 19:34:14,821 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,SelfDestructingSolverStorable14 [2024-11-16 19:34:14,822 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:34:14,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:34:14,822 INFO L85 PathProgramCache]: Analyzing trace with hash -265995016, now seen corresponding path program 11 times [2024-11-16 19:34:14,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:34:14,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660106334] [2024-11-16 19:34:14,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:34:14,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:34:14,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:34:14,910 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-16 19:34:14,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:34:14,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660106334] [2024-11-16 19:34:14,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660106334] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:34:14,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598040296] [2024-11-16 19:34:14,911 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 19:34:14,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:34:14,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:34:14,914 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:34:14,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-16 19:34:14,960 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-16 19:34:14,960 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:34:14,961 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-16 19:34:14,962 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:34:15,020 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:34:15,021 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 19:34:15,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598040296] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:34:15,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 19:34:15,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 10 [2024-11-16 19:34:15,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087300250] [2024-11-16 19:34:15,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:34:15,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 19:34:15,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:34:15,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 19:34:15,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-16 19:34:15,026 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2024-11-16 19:34:15,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 114 transitions, 1731 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:34:15,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:34:15,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2024-11-16 19:34:15,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:34:15,175 INFO L124 PetriNetUnfolderBase]: 370/867 cut-off events. [2024-11-16 19:34:15,176 INFO L125 PetriNetUnfolderBase]: For 11905/11905 co-relation queries the response was YES. [2024-11-16 19:34:15,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4517 conditions, 867 events. 370/867 cut-off events. For 11905/11905 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 5199 event pairs, 16 based on Foata normal form. 7/867 useless extension candidates. Maximal degree in co-relation 4469. Up to 282 conditions per place. [2024-11-16 19:34:15,184 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 104 selfloop transitions, 17 changer transitions 15/141 dead transitions. [2024-11-16 19:34:15,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 141 transitions, 2262 flow [2024-11-16 19:34:15,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:34:15,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:34:15,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 79 transitions. [2024-11-16 19:34:15,185 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5486111111111112 [2024-11-16 19:34:15,185 INFO L175 Difference]: Start difference. First operand has 127 places, 114 transitions, 1731 flow. Second operand 6 states and 79 transitions. [2024-11-16 19:34:15,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 141 transitions, 2262 flow [2024-11-16 19:34:15,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 141 transitions, 2100 flow, removed 78 selfloop flow, removed 6 redundant places. [2024-11-16 19:34:15,213 INFO L231 Difference]: Finished difference. Result has 126 places, 110 transitions, 1614 flow [2024-11-16 19:34:15,214 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1601, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1614, PETRI_PLACES=126, PETRI_TRANSITIONS=110} [2024-11-16 19:34:15,214 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 102 predicate places. [2024-11-16 19:34:15,214 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 110 transitions, 1614 flow [2024-11-16 19:34:15,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:34:15,215 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:34:15,215 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:34:15,231 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-16 19:34:15,416 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,SelfDestructingSolverStorable15 [2024-11-16 19:34:15,416 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:34:15,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:34:15,416 INFO L85 PathProgramCache]: Analyzing trace with hash 2013268852, now seen corresponding path program 12 times [2024-11-16 19:34:15,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:34:15,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957541216] [2024-11-16 19:34:15,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:34:15,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:34:15,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:34:15,503 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:34:15,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:34:15,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957541216] [2024-11-16 19:34:15,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957541216] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:34:15,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112579411] [2024-11-16 19:34:15,504 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 19:34:15,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:34:15,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:34:15,508 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:34:15,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-16 19:34:15,555 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-16 19:34:15,555 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:34:15,556 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-16 19:34:15,557 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:34:15,659 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:34:15,659 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:34:15,687 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 19:34:15,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112579411] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:34:15,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:34:15,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 4] total 10 [2024-11-16 19:34:15,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610173410] [2024-11-16 19:34:15,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:34:15,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-16 19:34:15,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:34:15,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-16 19:34:15,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-16 19:34:15,700 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2024-11-16 19:34:15,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 110 transitions, 1614 flow. Second operand has 11 states, 11 states have (on average 10.090909090909092) internal successors, (111), 11 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) [2024-11-16 19:34:15,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:34:15,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2024-11-16 19:34:15,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:34:15,980 INFO L124 PetriNetUnfolderBase]: 437/1017 cut-off events. [2024-11-16 19:34:15,980 INFO L125 PetriNetUnfolderBase]: For 20202/20202 co-relation queries the response was YES. [2024-11-16 19:34:15,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5894 conditions, 1017 events. 437/1017 cut-off events. For 20202/20202 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 6310 event pairs, 82 based on Foata normal form. 11/1025 useless extension candidates. Maximal degree in co-relation 5845. Up to 494 conditions per place. [2024-11-16 19:34:15,990 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 100 selfloop transitions, 59 changer transitions 23/187 dead transitions. [2024-11-16 19:34:15,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 187 transitions, 3166 flow [2024-11-16 19:34:15,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-16 19:34:15,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-16 19:34:15,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 150 transitions. [2024-11-16 19:34:15,992 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5681818181818182 [2024-11-16 19:34:15,992 INFO L175 Difference]: Start difference. First operand has 126 places, 110 transitions, 1614 flow. Second operand 11 states and 150 transitions. [2024-11-16 19:34:15,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 187 transitions, 3166 flow [2024-11-16 19:34:16,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 187 transitions, 3103 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-11-16 19:34:16,031 INFO L231 Difference]: Finished difference. Result has 136 places, 144 transitions, 2392 flow [2024-11-16 19:34:16,031 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1569, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2392, PETRI_PLACES=136, PETRI_TRANSITIONS=144} [2024-11-16 19:34:16,032 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 112 predicate places. [2024-11-16 19:34:16,032 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 144 transitions, 2392 flow [2024-11-16 19:34:16,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.090909090909092) internal successors, (111), 11 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) [2024-11-16 19:34:16,032 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:34:16,032 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:34:16,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-16 19:34:16,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:34:16,233 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:34:16,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:34:16,234 INFO L85 PathProgramCache]: Analyzing trace with hash -445138338, now seen corresponding path program 13 times [2024-11-16 19:34:16,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:34:16,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315920393] [2024-11-16 19:34:16,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:34:16,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:34:16,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:34:16,316 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:34:16,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:34:16,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315920393] [2024-11-16 19:34:16,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315920393] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:34:16,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550075909] [2024-11-16 19:34:16,316 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 19:34:16,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:34:16,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:34:16,318 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:34:16,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-16 19:34:16,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:34:16,365 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-16 19:34:16,365 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:34:16,510 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:34:16,511 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:34:16,663 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:34:16,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550075909] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:34:16,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:34:16,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 17 [2024-11-16 19:34:16,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213767761] [2024-11-16 19:34:16,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:34:16,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-16 19:34:16,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:34:16,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-16 19:34:16,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2024-11-16 19:34:16,676 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2024-11-16 19:34:16,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 144 transitions, 2392 flow. Second operand has 18 states, 18 states have (on average 9.333333333333334) internal successors, (168), 18 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:34:16,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:34:16,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2024-11-16 19:34:16,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:34:17,053 INFO L124 PetriNetUnfolderBase]: 457/1077 cut-off events. [2024-11-16 19:34:17,053 INFO L125 PetriNetUnfolderBase]: For 29172/29172 co-relation queries the response was YES. [2024-11-16 19:34:17,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6940 conditions, 1077 events. 457/1077 cut-off events. For 29172/29172 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 6736 event pairs, 12 based on Foata normal form. 18/1092 useless extension candidates. Maximal degree in co-relation 6888. Up to 379 conditions per place. [2024-11-16 19:34:17,065 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 124 selfloop transitions, 50 changer transitions 26/205 dead transitions. [2024-11-16 19:34:17,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 205 transitions, 3683 flow [2024-11-16 19:34:17,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-16 19:34:17,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-16 19:34:17,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 203 transitions. [2024-11-16 19:34:17,066 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49754901960784315 [2024-11-16 19:34:17,066 INFO L175 Difference]: Start difference. First operand has 136 places, 144 transitions, 2392 flow. Second operand 17 states and 203 transitions. [2024-11-16 19:34:17,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 205 transitions, 3683 flow [2024-11-16 19:34:17,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 205 transitions, 3357 flow, removed 137 selfloop flow, removed 4 redundant places. [2024-11-16 19:34:17,117 INFO L231 Difference]: Finished difference. Result has 153 places, 156 transitions, 2514 flow [2024-11-16 19:34:17,117 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2026, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2514, PETRI_PLACES=153, PETRI_TRANSITIONS=156} [2024-11-16 19:34:17,117 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 129 predicate places. [2024-11-16 19:34:17,117 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 156 transitions, 2514 flow [2024-11-16 19:34:17,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 9.333333333333334) internal successors, (168), 18 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:34:17,118 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:34:17,118 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:34:17,134 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-16 19:34:17,322 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,SelfDestructingSolverStorable17 [2024-11-16 19:34:17,323 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:34:17,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:34:17,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1611043385, now seen corresponding path program 14 times [2024-11-16 19:34:17,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:34:17,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309586447] [2024-11-16 19:34:17,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:34:17,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:34:17,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:34:17,386 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:34:17,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:34:17,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309586447] [2024-11-16 19:34:17,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309586447] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:34:17,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930492790] [2024-11-16 19:34:17,387 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 19:34:17,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:34:17,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:34:17,389 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:34:17,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-16 19:34:17,439 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 19:34:17,440 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:34:17,440 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-16 19:34:17,441 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:34:17,530 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:34:17,531 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:34:17,632 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:34:17,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930492790] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:34:17,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:34:17,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 16 [2024-11-16 19:34:17,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704252330] [2024-11-16 19:34:17,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:34:17,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-16 19:34:17,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:34:17,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-16 19:34:17,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2024-11-16 19:34:17,638 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2024-11-16 19:34:17,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 156 transitions, 2514 flow. Second operand has 17 states, 17 states have (on average 9.176470588235293) internal successors, (156), 17 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:34:17,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:34:17,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2024-11-16 19:34:17,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:34:18,000 INFO L124 PetriNetUnfolderBase]: 445/1043 cut-off events. [2024-11-16 19:34:18,001 INFO L125 PetriNetUnfolderBase]: For 33666/33666 co-relation queries the response was YES. [2024-11-16 19:34:18,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6766 conditions, 1043 events. 445/1043 cut-off events. For 33666/33666 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 6396 event pairs, 48 based on Foata normal form. 28/1068 useless extension candidates. Maximal degree in co-relation 6707. Up to 235 conditions per place. [2024-11-16 19:34:18,010 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 106 selfloop transitions, 91 changer transitions 20/222 dead transitions. [2024-11-16 19:34:18,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 222 transitions, 4120 flow [2024-11-16 19:34:18,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-16 19:34:18,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-16 19:34:18,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 200 transitions. [2024-11-16 19:34:18,012 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49019607843137253 [2024-11-16 19:34:18,012 INFO L175 Difference]: Start difference. First operand has 153 places, 156 transitions, 2514 flow. Second operand 17 states and 200 transitions. [2024-11-16 19:34:18,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 222 transitions, 4120 flow [2024-11-16 19:34:18,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 222 transitions, 3871 flow, removed 108 selfloop flow, removed 5 redundant places. [2024-11-16 19:34:18,050 INFO L231 Difference]: Finished difference. Result has 167 places, 171 transitions, 3101 flow [2024-11-16 19:34:18,050 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2309, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3101, PETRI_PLACES=167, PETRI_TRANSITIONS=171} [2024-11-16 19:34:18,050 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 143 predicate places. [2024-11-16 19:34:18,050 INFO L471 AbstractCegarLoop]: Abstraction has has 167 places, 171 transitions, 3101 flow [2024-11-16 19:34:18,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 9.176470588235293) internal successors, (156), 17 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:34:18,051 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:34:18,051 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:34:18,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-16 19:34:18,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:34:18,252 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:34:18,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:34:18,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1406720351, now seen corresponding path program 15 times [2024-11-16 19:34:18,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:34:18,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642706626] [2024-11-16 19:34:18,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:34:18,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:34:18,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:34:18,319 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:34:18,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:34:18,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642706626] [2024-11-16 19:34:18,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642706626] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:34:18,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948569513] [2024-11-16 19:34:18,320 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 19:34:18,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:34:18,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:34:18,322 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) [2024-11-16 19:34:18,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-16 19:34:18,367 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-16 19:34:18,367 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:34:18,368 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-16 19:34:18,369 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:34:18,429 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-16 19:34:18,430 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 19:34:18,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948569513] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:34:18,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 19:34:18,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2024-11-16 19:34:18,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128587820] [2024-11-16 19:34:18,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:34:18,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 19:34:18,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:34:18,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 19:34:18,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-11-16 19:34:18,436 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2024-11-16 19:34:18,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 171 transitions, 3101 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:34:18,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:34:18,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2024-11-16 19:34:18,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:34:18,595 INFO L124 PetriNetUnfolderBase]: 431/1003 cut-off events. [2024-11-16 19:34:18,595 INFO L125 PetriNetUnfolderBase]: For 28584/28584 co-relation queries the response was YES. [2024-11-16 19:34:18,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6779 conditions, 1003 events. 431/1003 cut-off events. For 28584/28584 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 6100 event pairs, 8 based on Foata normal form. 7/1005 useless extension candidates. Maximal degree in co-relation 6716. Up to 450 conditions per place. [2024-11-16 19:34:18,601 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 35 selfloop transitions, 4 changer transitions 157/201 dead transitions. [2024-11-16 19:34:18,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 201 transitions, 3874 flow [2024-11-16 19:34:18,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:34:18,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:34:18,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 80 transitions. [2024-11-16 19:34:18,603 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-11-16 19:34:18,603 INFO L175 Difference]: Start difference. First operand has 167 places, 171 transitions, 3101 flow. Second operand 6 states and 80 transitions. [2024-11-16 19:34:18,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 201 transitions, 3874 flow [2024-11-16 19:34:18,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 201 transitions, 3496 flow, removed 164 selfloop flow, removed 8 redundant places. [2024-11-16 19:34:18,675 INFO L231 Difference]: Finished difference. Result has 166 places, 33 transitions, 470 flow [2024-11-16 19:34:18,676 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2741, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=470, PETRI_PLACES=166, PETRI_TRANSITIONS=33} [2024-11-16 19:34:18,676 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 142 predicate places. [2024-11-16 19:34:18,676 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 33 transitions, 470 flow [2024-11-16 19:34:18,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:34:18,677 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:34:18,677 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:34:18,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-16 19:34:18,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:34:18,878 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:34:18,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:34:18,878 INFO L85 PathProgramCache]: Analyzing trace with hash -2143430213, now seen corresponding path program 16 times [2024-11-16 19:34:18,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:34:18,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939673340] [2024-11-16 19:34:18,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:34:18,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:34:18,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:34:18,934 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:34:18,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:34:18,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939673340] [2024-11-16 19:34:18,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939673340] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:34:18,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386822065] [2024-11-16 19:34:18,934 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 19:34:18,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:34:18,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:34:18,936 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) [2024-11-16 19:34:18,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-16 19:34:18,985 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 19:34:18,986 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:34:18,986 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-16 19:34:18,987 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:34:19,070 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:34:19,070 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:34:19,167 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:34:19,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386822065] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:34:19,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:34:19,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 16 [2024-11-16 19:34:19,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037066687] [2024-11-16 19:34:19,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:34:19,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-16 19:34:19,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:34:19,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-16 19:34:19,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2024-11-16 19:34:19,171 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2024-11-16 19:34:19,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 33 transitions, 470 flow. Second operand has 17 states, 17 states have (on average 9.176470588235293) internal successors, (156), 17 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:34:19,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:34:19,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2024-11-16 19:34:19,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:34:19,276 INFO L124 PetriNetUnfolderBase]: 59/181 cut-off events. [2024-11-16 19:34:19,277 INFO L125 PetriNetUnfolderBase]: For 8828/8828 co-relation queries the response was YES. [2024-11-16 19:34:19,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1199 conditions, 181 events. 59/181 cut-off events. For 8828/8828 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 589 event pairs, 6 based on Foata normal form. 7/185 useless extension candidates. Maximal degree in co-relation 1137. Up to 57 conditions per place. [2024-11-16 19:34:19,278 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 30 selfloop transitions, 11 changer transitions 9/55 dead transitions. [2024-11-16 19:34:19,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 55 transitions, 788 flow [2024-11-16 19:34:19,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 19:34:19,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-16 19:34:19,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-11-16 19:34:19,279 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4708333333333333 [2024-11-16 19:34:19,279 INFO L175 Difference]: Start difference. First operand has 166 places, 33 transitions, 470 flow. Second operand 10 states and 113 transitions. [2024-11-16 19:34:19,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 55 transitions, 788 flow [2024-11-16 19:34:19,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 55 transitions, 448 flow, removed 98 selfloop flow, removed 64 redundant places. [2024-11-16 19:34:19,284 INFO L231 Difference]: Finished difference. Result has 80 places, 34 transitions, 276 flow [2024-11-16 19:34:19,285 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=276, PETRI_PLACES=80, PETRI_TRANSITIONS=34} [2024-11-16 19:34:19,285 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 56 predicate places. [2024-11-16 19:34:19,285 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 34 transitions, 276 flow [2024-11-16 19:34:19,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 9.176470588235293) internal successors, (156), 17 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:34:19,285 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:34:19,285 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:34:19,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-16 19:34:19,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:34:19,486 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:34:19,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:34:19,486 INFO L85 PathProgramCache]: Analyzing trace with hash 422895419, now seen corresponding path program 17 times [2024-11-16 19:34:19,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:34:19,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029326396] [2024-11-16 19:34:19,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:34:19,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:34:19,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:34:19,545 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:34:19,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:34:19,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029326396] [2024-11-16 19:34:19,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029326396] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:34:19,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753361213] [2024-11-16 19:34:19,546 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 19:34:19,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:34:19,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:34:19,548 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) [2024-11-16 19:34:19,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-16 19:34:19,596 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-16 19:34:19,597 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:34:19,597 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-16 19:34:19,598 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:34:19,673 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:34:19,674 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:34:19,760 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:34:19,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753361213] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:34:19,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:34:19,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 16 [2024-11-16 19:34:19,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729349245] [2024-11-16 19:34:19,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:34:19,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-16 19:34:19,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:34:19,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-16 19:34:19,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2024-11-16 19:34:19,772 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2024-11-16 19:34:19,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 34 transitions, 276 flow. Second operand has 17 states, 17 states have (on average 9.176470588235293) internal successors, (156), 17 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:34:19,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:34:19,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2024-11-16 19:34:19,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:34:19,890 INFO L124 PetriNetUnfolderBase]: 62/191 cut-off events. [2024-11-16 19:34:19,890 INFO L125 PetriNetUnfolderBase]: For 1157/1157 co-relation queries the response was YES. [2024-11-16 19:34:19,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 783 conditions, 191 events. 62/191 cut-off events. For 1157/1157 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 633 event pairs, 5 based on Foata normal form. 6/194 useless extension candidates. Maximal degree in co-relation 755. Up to 55 conditions per place. [2024-11-16 19:34:19,891 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 34 selfloop transitions, 11 changer transitions 8/58 dead transitions. [2024-11-16 19:34:19,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 58 transitions, 510 flow [2024-11-16 19:34:19,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 19:34:19,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-16 19:34:19,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-11-16 19:34:19,892 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-11-16 19:34:19,892 INFO L175 Difference]: Start difference. First operand has 80 places, 34 transitions, 276 flow. Second operand 10 states and 115 transitions. [2024-11-16 19:34:19,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 58 transitions, 510 flow [2024-11-16 19:34:19,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 58 transitions, 483 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-11-16 19:34:19,895 INFO L231 Difference]: Finished difference. Result has 84 places, 35 transitions, 299 flow [2024-11-16 19:34:19,895 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=299, PETRI_PLACES=84, PETRI_TRANSITIONS=35} [2024-11-16 19:34:19,895 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 60 predicate places. [2024-11-16 19:34:19,895 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 35 transitions, 299 flow [2024-11-16 19:34:19,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 9.176470588235293) internal successors, (156), 17 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:34:19,895 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:34:19,896 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:34:19,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-16 19:34:20,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:34:20,100 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:34:20,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:34:20,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1400021540, now seen corresponding path program 18 times [2024-11-16 19:34:20,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:34:20,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336842052] [2024-11-16 19:34:20,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:34:20,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:34:20,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:34:20,208 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:34:20,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:34:20,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336842052] [2024-11-16 19:34:20,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336842052] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:34:20,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75063982] [2024-11-16 19:34:20,209 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 19:34:20,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:34:20,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:34:20,211 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) [2024-11-16 19:34:20,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-16 19:34:20,252 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-16 19:34:20,253 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:34:20,254 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-16 19:34:20,255 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:34:20,316 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-16 19:34:20,316 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 19:34:20,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75063982] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:34:20,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 19:34:20,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 13 [2024-11-16 19:34:20,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846120297] [2024-11-16 19:34:20,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:34:20,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 19:34:20,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:34:20,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 19:34:20,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2024-11-16 19:34:20,326 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2024-11-16 19:34:20,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 35 transitions, 299 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:34:20,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:34:20,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2024-11-16 19:34:20,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:34:20,384 INFO L124 PetriNetUnfolderBase]: 55/163 cut-off events. [2024-11-16 19:34:20,385 INFO L125 PetriNetUnfolderBase]: For 951/951 co-relation queries the response was YES. [2024-11-16 19:34:20,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 709 conditions, 163 events. 55/163 cut-off events. For 951/951 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 504 event pairs, 9 based on Foata normal form. 1/158 useless extension candidates. Maximal degree in co-relation 679. Up to 71 conditions per place. [2024-11-16 19:34:20,386 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 20 selfloop transitions, 1 changer transitions 23/49 dead transitions. [2024-11-16 19:34:20,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 49 transitions, 440 flow [2024-11-16 19:34:20,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:34:20,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:34:20,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 76 transitions. [2024-11-16 19:34:20,387 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-11-16 19:34:20,387 INFO L175 Difference]: Start difference. First operand has 84 places, 35 transitions, 299 flow. Second operand 6 states and 76 transitions. [2024-11-16 19:34:20,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 49 transitions, 440 flow [2024-11-16 19:34:20,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 49 transitions, 417 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-11-16 19:34:20,389 INFO L231 Difference]: Finished difference. Result has 81 places, 25 transitions, 167 flow [2024-11-16 19:34:20,390 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=167, PETRI_PLACES=81, PETRI_TRANSITIONS=25} [2024-11-16 19:34:20,390 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 57 predicate places. [2024-11-16 19:34:20,390 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 25 transitions, 167 flow [2024-11-16 19:34:20,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:34:20,390 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:34:20,390 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:34:20,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-16 19:34:20,591 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,SelfDestructingSolverStorable22 [2024-11-16 19:34:20,591 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:34:20,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:34:20,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1757918300, now seen corresponding path program 19 times [2024-11-16 19:34:20,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:34:20,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229903772] [2024-11-16 19:34:20,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:34:20,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:34:20,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:34:20,706 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:34:20,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:34:20,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229903772] [2024-11-16 19:34:20,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229903772] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:34:20,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983180550] [2024-11-16 19:34:20,707 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 19:34:20,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:34:20,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:34:20,709 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) [2024-11-16 19:34:20,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-16 19:34:20,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:34:20,747 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-16 19:34:20,748 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:34:20,915 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:34:20,915 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:34:21,093 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:34:21,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983180550] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:34:21,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:34:21,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 23 [2024-11-16 19:34:21,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557108444] [2024-11-16 19:34:21,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:34:21,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-16 19:34:21,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:34:21,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-16 19:34:21,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=393, Unknown=0, NotChecked=0, Total=552 [2024-11-16 19:34:21,101 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2024-11-16 19:34:21,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 25 transitions, 167 flow. Second operand has 24 states, 24 states have (on average 9.0) internal successors, (216), 24 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:34:21,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:34:21,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2024-11-16 19:34:21,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:34:21,256 INFO L124 PetriNetUnfolderBase]: 39/118 cut-off events. [2024-11-16 19:34:21,256 INFO L125 PetriNetUnfolderBase]: For 795/795 co-relation queries the response was YES. [2024-11-16 19:34:21,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 546 conditions, 118 events. 39/118 cut-off events. For 795/795 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 300 event pairs, 6 based on Foata normal form. 1/118 useless extension candidates. Maximal degree in co-relation 517. Up to 28 conditions per place. [2024-11-16 19:34:21,257 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 22 selfloop transitions, 9 changer transitions 10/46 dead transitions. [2024-11-16 19:34:21,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 46 transitions, 369 flow [2024-11-16 19:34:21,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-16 19:34:21,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-16 19:34:21,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-11-16 19:34:21,259 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-11-16 19:34:21,259 INFO L175 Difference]: Start difference. First operand has 81 places, 25 transitions, 167 flow. Second operand 12 states and 126 transitions. [2024-11-16 19:34:21,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 46 transitions, 369 flow [2024-11-16 19:34:21,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 46 transitions, 305 flow, removed 15 selfloop flow, removed 14 redundant places. [2024-11-16 19:34:21,261 INFO L231 Difference]: Finished difference. Result has 71 places, 26 transitions, 158 flow [2024-11-16 19:34:21,261 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=158, PETRI_PLACES=71, PETRI_TRANSITIONS=26} [2024-11-16 19:34:21,261 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 47 predicate places. [2024-11-16 19:34:21,261 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 26 transitions, 158 flow [2024-11-16 19:34:21,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 9.0) internal successors, (216), 24 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:34:21,261 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:34:21,262 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:34:21,278 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-16 19:34:21,466 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,SelfDestructingSolverStorable23 [2024-11-16 19:34:21,467 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:34:21,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:34:21,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1904290253, now seen corresponding path program 20 times [2024-11-16 19:34:21,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:34:21,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405122514] [2024-11-16 19:34:21,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:34:21,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:34:21,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:34:21,531 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:34:21,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:34:21,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405122514] [2024-11-16 19:34:21,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405122514] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:34:21,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560030508] [2024-11-16 19:34:21,532 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 19:34:21,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:34:21,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:34:21,534 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) [2024-11-16 19:34:21,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-16 19:34:21,577 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 19:34:21,578 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:34:21,578 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-16 19:34:21,579 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:34:21,667 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:34:21,668 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:34:21,785 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:34:21,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560030508] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:34:21,785 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:34:21,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 21 [2024-11-16 19:34:21,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606388817] [2024-11-16 19:34:21,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:34:21,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-16 19:34:21,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:34:21,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-16 19:34:21,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=304, Unknown=0, NotChecked=0, Total=462 [2024-11-16 19:34:21,790 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2024-11-16 19:34:21,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 26 transitions, 158 flow. Second operand has 22 states, 22 states have (on average 8.954545454545455) internal successors, (197), 22 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:34:21,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:34:21,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2024-11-16 19:34:21,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:34:21,875 INFO L124 PetriNetUnfolderBase]: 34/118 cut-off events. [2024-11-16 19:34:21,876 INFO L125 PetriNetUnfolderBase]: For 485/485 co-relation queries the response was YES. [2024-11-16 19:34:21,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 461 conditions, 118 events. 34/118 cut-off events. For 485/485 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 277 event pairs, 6 based on Foata normal form. 7/124 useless extension candidates. Maximal degree in co-relation 441. Up to 29 conditions per place. [2024-11-16 19:34:21,876 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 21 selfloop transitions, 6 changer transitions 14/46 dead transitions. [2024-11-16 19:34:21,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 46 transitions, 357 flow [2024-11-16 19:34:21,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-16 19:34:21,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-16 19:34:21,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-11-16 19:34:21,877 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4356060606060606 [2024-11-16 19:34:21,877 INFO L175 Difference]: Start difference. First operand has 71 places, 26 transitions, 158 flow. Second operand 11 states and 115 transitions. [2024-11-16 19:34:21,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 46 transitions, 357 flow [2024-11-16 19:34:21,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 46 transitions, 333 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-11-16 19:34:21,878 INFO L231 Difference]: Finished difference. Result has 78 places, 27 transitions, 174 flow [2024-11-16 19:34:21,879 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=174, PETRI_PLACES=78, PETRI_TRANSITIONS=27} [2024-11-16 19:34:21,879 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 54 predicate places. [2024-11-16 19:34:21,879 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 27 transitions, 174 flow [2024-11-16 19:34:21,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.954545454545455) internal successors, (197), 22 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:34:21,879 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:34:21,879 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:34:21,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-16 19:34:22,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:34:22,080 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:34:22,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:34:22,080 INFO L85 PathProgramCache]: Analyzing trace with hash 2122996748, now seen corresponding path program 21 times [2024-11-16 19:34:22,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:34:22,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013724588] [2024-11-16 19:34:22,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:34:22,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:34:22,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:34:22,224 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 32 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:34:22,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:34:22,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013724588] [2024-11-16 19:34:22,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013724588] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:34:22,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652741374] [2024-11-16 19:34:22,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 19:34:22,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:34:22,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:34:22,227 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) [2024-11-16 19:34:22,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-16 19:34:22,272 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-16 19:34:22,273 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:34:22,273 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-16 19:34:22,274 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:34:22,334 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-16 19:34:22,334 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 19:34:22,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652741374] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:34:22,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 19:34:22,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 15 [2024-11-16 19:34:22,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860228639] [2024-11-16 19:34:22,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:34:22,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 19:34:22,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:34:22,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 19:34:22,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2024-11-16 19:34:22,340 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2024-11-16 19:34:22,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 27 transitions, 174 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:34:22,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:34:22,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2024-11-16 19:34:22,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:34:22,376 INFO L124 PetriNetUnfolderBase]: 26/87 cut-off events. [2024-11-16 19:34:22,376 INFO L125 PetriNetUnfolderBase]: For 346/346 co-relation queries the response was YES. [2024-11-16 19:34:22,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 367 conditions, 87 events. 26/87 cut-off events. For 346/346 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 133 event pairs, 0 based on Foata normal form. 1/87 useless extension candidates. Maximal degree in co-relation 342. Up to 21 conditions per place. [2024-11-16 19:34:22,377 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 0 selfloop transitions, 0 changer transitions 33/33 dead transitions. [2024-11-16 19:34:22,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 33 transitions, 264 flow [2024-11-16 19:34:22,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:34:22,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:34:22,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 66 transitions. [2024-11-16 19:34:22,380 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-11-16 19:34:22,380 INFO L175 Difference]: Start difference. First operand has 78 places, 27 transitions, 174 flow. Second operand 6 states and 66 transitions. [2024-11-16 19:34:22,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 33 transitions, 264 flow [2024-11-16 19:34:22,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 33 transitions, 241 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-11-16 19:34:22,381 INFO L231 Difference]: Finished difference. Result has 69 places, 0 transitions, 0 flow [2024-11-16 19:34:22,381 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=69, PETRI_TRANSITIONS=0} [2024-11-16 19:34:22,382 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 45 predicate places. [2024-11-16 19:34:22,382 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 0 transitions, 0 flow [2024-11-16 19:34:22,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:34:22,385 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2024-11-16 19:34:22,386 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2024-11-16 19:34:22,386 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-11-16 19:34:22,402 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-16 19:34:22,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:34:22,587 INFO L407 BasicCegarLoop]: Path program histogram: [21, 2, 1, 1, 1] [2024-11-16 19:34:22,589 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-16 19:34:22,589 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-16 19:34:22,593 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 07:34:22 BasicIcfg [2024-11-16 19:34:22,593 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-16 19:34:22,594 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-16 19:34:22,594 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-16 19:34:22,594 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-16 19:34:22,594 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:34:04" (3/4) ... [2024-11-16 19:34:22,596 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-16 19:34:22,599 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-16 19:34:22,599 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-16 19:34:22,604 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 39 nodes and edges [2024-11-16 19:34:22,604 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2024-11-16 19:34:22,604 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2024-11-16 19:34:22,605 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-16 19:34:22,679 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-16 19:34:22,680 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-16 19:34:22,680 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-16 19:34:22,680 INFO L158 Benchmark]: Toolchain (without parser) took 18677.29ms. Allocated memory was 165.7MB in the beginning and 247.5MB in the end (delta: 81.8MB). Free memory was 132.7MB in the beginning and 145.8MB in the end (delta: -13.1MB). Peak memory consumption was 69.7MB. Max. memory is 16.1GB. [2024-11-16 19:34:22,681 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 109.1MB. Free memory was 81.0MB in the beginning and 80.9MB in the end (delta: 167.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-16 19:34:22,681 INFO L158 Benchmark]: CACSL2BoogieTranslator took 298.97ms. Allocated memory is still 165.7MB. Free memory was 132.0MB in the beginning and 118.6MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-16 19:34:22,681 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.89ms. Allocated memory is still 165.7MB. Free memory was 118.6MB in the beginning and 117.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-16 19:34:22,681 INFO L158 Benchmark]: Boogie Preprocessor took 40.05ms. Allocated memory is still 165.7MB. Free memory was 117.2MB in the beginning and 115.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-16 19:34:22,682 INFO L158 Benchmark]: IcfgBuilder took 533.64ms. Allocated memory is still 165.7MB. Free memory was 115.2MB in the beginning and 125.2MB in the end (delta: -10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-16 19:34:22,682 INFO L158 Benchmark]: TraceAbstraction took 17680.85ms. Allocated memory was 165.7MB in the beginning and 247.5MB in the end (delta: 81.8MB). Free memory was 124.6MB in the beginning and 150.0MB in the end (delta: -25.4MB). Peak memory consumption was 59.3MB. Max. memory is 16.1GB. [2024-11-16 19:34:22,682 INFO L158 Benchmark]: Witness Printer took 86.24ms. Allocated memory is still 247.5MB. Free memory was 150.0MB in the beginning and 145.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-16 19:34:22,684 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 109.1MB. Free memory was 81.0MB in the beginning and 80.9MB in the end (delta: 167.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 298.97ms. Allocated memory is still 165.7MB. Free memory was 132.0MB in the beginning and 118.6MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.89ms. Allocated memory is still 165.7MB. Free memory was 118.6MB in the beginning and 117.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.05ms. Allocated memory is still 165.7MB. Free memory was 117.2MB in the beginning and 115.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 533.64ms. Allocated memory is still 165.7MB. Free memory was 115.2MB in the beginning and 125.2MB in the end (delta: -10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 17680.85ms. Allocated memory was 165.7MB in the beginning and 247.5MB in the end (delta: 81.8MB). Free memory was 124.6MB in the beginning and 150.0MB in the end (delta: -25.4MB). Peak memory consumption was 59.3MB. Max. memory is 16.1GB. * Witness Printer took 86.24ms. Allocated memory is still 247.5MB. Free memory was 150.0MB in the beginning and 145.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 70]: 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, 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: 17.6s, OverallIterations: 26, TraceHistogramMax: 5, PathProgramHistogramMax: 21, EmptinessCheckTime: 0.0s, AutomataDifference: 5.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1027 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 993 mSDsluCounter, 25 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12 mSDsCounter, 185 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3142 IncrementalHoareTripleChecker+Invalid, 3327 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 185 mSolverCounterUnsat, 13 mSDtfsCounter, 3142 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1158 GetRequests, 824 SyntacticMatches, 11 SemanticMatches, 323 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1687 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3101occurred in iteration=19, InterpolantAutomatonStates: 226, 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, 0.4s SatisfiabilityAnalysisTime, 5.8s InterpolantComputationTime, 1197 NumberOfCodeBlocks, 1172 NumberOfCodeBlocksAsserted, 78 NumberOfCheckSat, 1542 ConstructedInterpolants, 0 QuantifiedInterpolants, 7552 SizeOfPredicates, 10 NumberOfNonLiveVariables, 2270 ConjunctsInSsa, 155 ConjunctsInUnsatCore, 66 InterpolantComputations, 11 PerfectInterpolantSequences, 338/824 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-16 19:34:22,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE