./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c7c6ca5d 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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e66d74cf738883d82d8ab680e594f84e8947532df35a185c16ed9746f38b197c --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 10:51:34,862 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 10:51:34,912 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-09 10:51:34,916 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 10:51:34,916 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 10:51:34,939 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 10:51:34,941 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 10:51:34,941 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 10:51:34,941 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 10:51:34,942 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 10:51:34,942 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 10:51:34,943 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 10:51:34,944 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 10:51:34,944 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 10:51:34,945 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 10:51:34,946 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 10:51:34,946 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 10:51:34,946 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 10:51:34,946 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 10:51:34,946 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 10:51:34,947 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 10:51:34,950 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 10:51:34,951 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 10:51:34,951 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 10:51:34,951 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 10:51:34,951 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 10:51:34,951 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 10:51:34,952 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 10:51:34,952 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 10:51:34,952 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 10:51:34,952 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 10:51:34,953 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 10:51:34,953 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 10:51:34,953 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:51:34,953 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 10:51:34,954 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 10:51:34,954 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 10:51:34,954 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 10:51:34,954 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 10:51:34,954 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 10:51:34,954 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 10:51:34,955 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 10:51:34,955 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e66d74cf738883d82d8ab680e594f84e8947532df35a185c16ed9746f38b197c [2024-11-09 10:51:35,178 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 10:51:35,196 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 10:51:35,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 10:51:35,200 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 10:51:35,200 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 10:51:35,201 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c [2024-11-09 10:51:36,405 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 10:51:36,554 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 10:51:36,555 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c [2024-11-09 10:51:36,565 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b3eb8ca0/02df083fffa34f1b9d4b0b69bcd93d47/FLAG950dfe4f1 [2024-11-09 10:51:36,963 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b3eb8ca0/02df083fffa34f1b9d4b0b69bcd93d47 [2024-11-09 10:51:36,965 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 10:51:36,966 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 10:51:36,967 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 10:51:36,967 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 10:51:36,973 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 10:51:36,973 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:51:36" (1/1) ... [2024-11-09 10:51:36,974 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@443e12c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:36, skipping insertion in model container [2024-11-09 10:51:36,974 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:51:36" (1/1) ... [2024-11-09 10:51:36,991 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 10:51:37,144 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:51:37,152 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 10:51:37,165 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:51:37,177 INFO L204 MainTranslator]: Completed translation [2024-11-09 10:51:37,177 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:37 WrapperNode [2024-11-09 10:51:37,178 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 10:51:37,178 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 10:51:37,179 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 10:51:37,181 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 10:51:37,186 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:37" (1/1) ... [2024-11-09 10:51:37,191 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:37" (1/1) ... [2024-11-09 10:51:37,203 INFO L138 Inliner]: procedures = 18, calls = 12, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 68 [2024-11-09 10:51:37,203 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 10:51:37,203 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 10:51:37,203 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 10:51:37,204 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 10:51:37,210 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:37" (1/1) ... [2024-11-09 10:51:37,210 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:37" (1/1) ... [2024-11-09 10:51:37,211 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:37" (1/1) ... [2024-11-09 10:51:37,220 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]. [2024-11-09 10:51:37,220 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:37" (1/1) ... [2024-11-09 10:51:37,220 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:37" (1/1) ... [2024-11-09 10:51:37,223 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:37" (1/1) ... [2024-11-09 10:51:37,225 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:37" (1/1) ... [2024-11-09 10:51:37,225 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:37" (1/1) ... [2024-11-09 10:51:37,226 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:37" (1/1) ... [2024-11-09 10:51:37,228 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 10:51:37,228 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 10:51:37,231 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 10:51:37,231 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 10:51:37,232 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:37" (1/1) ... [2024-11-09 10:51:37,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:51:37,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:51:37,259 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) [2024-11-09 10:51:37,261 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 [2024-11-09 10:51:37,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 10:51:37,297 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 10:51:37,297 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 10:51:37,297 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 10:51:37,297 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 10:51:37,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 10:51:37,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 10:51:37,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 10:51:37,298 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 10:51:37,373 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 10:51:37,374 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 10:51:37,609 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 10:51:37,610 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 10:51:37,710 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 10:51:37,712 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 10:51:37,713 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:51:37 BoogieIcfgContainer [2024-11-09 10:51:37,713 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 10:51:37,714 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 10:51:37,714 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 10:51:37,717 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 10:51:37,717 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:51:36" (1/3) ... [2024-11-09 10:51:37,717 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2512da8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:51:37, skipping insertion in model container [2024-11-09 10:51:37,717 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:37" (2/3) ... [2024-11-09 10:51:37,717 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2512da8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:51:37, skipping insertion in model container [2024-11-09 10:51:37,717 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:51:37" (3/3) ... [2024-11-09 10:51:37,718 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-figure1-alt.wvr.c [2024-11-09 10:51:37,730 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 10:51:37,730 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-09 10:51:37,730 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 10:51:37,764 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-09 10:51:37,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 24 transitions, 62 flow [2024-11-09 10:51:37,811 INFO L124 PetriNetUnfolderBase]: 2/22 cut-off events. [2024-11-09 10:51:37,811 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 10:51:37,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 22 events. 2/22 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 21 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 15. Up to 2 conditions per place. [2024-11-09 10:51:37,813 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 24 transitions, 62 flow [2024-11-09 10:51:37,815 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 21 transitions, 54 flow [2024-11-09 10:51:37,825 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:51:37,830 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=None, 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;@1a5e4877, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:51:37,831 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-09 10:51:37,838 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 10:51:37,838 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2024-11-09 10:51:37,838 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 10:51:37,838 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:37,839 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:37,839 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:51:37,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:37,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1299096925, now seen corresponding path program 1 times [2024-11-09 10:51:37,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:37,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15753203] [2024-11-09 10:51:37,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:37,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:37,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:38,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:38,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:38,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15753203] [2024-11-09 10:51:38,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15753203] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:51:38,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:51:38,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 10:51:38,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116080729] [2024-11-09 10:51:38,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:51:38,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 10:51:38,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:38,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 10:51:38,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 10:51:38,413 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-09 10:51:38,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 21 transitions, 54 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:51:38,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:38,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-09 10:51:38,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:38,588 INFO L124 PetriNetUnfolderBase]: 87/185 cut-off events. [2024-11-09 10:51:38,588 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-11-09 10:51:38,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 383 conditions, 185 events. 87/185 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 656 event pairs, 12 based on Foata normal form. 3/181 useless extension candidates. Maximal degree in co-relation 312. Up to 108 conditions per place. [2024-11-09 10:51:38,591 INFO L140 encePairwiseOnDemand]: 15/24 looper letters, 30 selfloop transitions, 4 changer transitions 9/45 dead transitions. [2024-11-09 10:51:38,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 45 transitions, 212 flow [2024-11-09 10:51:38,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 10:51:38,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 10:51:38,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-11-09 10:51:38,601 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5059523809523809 [2024-11-09 10:51:38,603 INFO L175 Difference]: Start difference. First operand has 26 places, 21 transitions, 54 flow. Second operand 7 states and 85 transitions. [2024-11-09 10:51:38,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 45 transitions, 212 flow [2024-11-09 10:51:38,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 45 transitions, 188 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-09 10:51:38,607 INFO L231 Difference]: Finished difference. Result has 31 places, 21 transitions, 78 flow [2024-11-09 10:51:38,608 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=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=78, PETRI_PLACES=31, PETRI_TRANSITIONS=21} [2024-11-09 10:51:38,611 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 5 predicate places. [2024-11-09 10:51:38,611 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 21 transitions, 78 flow [2024-11-09 10:51:38,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:51:38,611 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:38,611 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:38,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 10:51:38,612 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:51:38,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:38,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1491299389, now seen corresponding path program 2 times [2024-11-09 10:51:38,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:38,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045438111] [2024-11-09 10:51:38,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:38,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:38,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:38,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:38,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:38,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045438111] [2024-11-09 10:51:38,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045438111] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:51:38,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:51:38,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 10:51:38,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88920098] [2024-11-09 10:51:38,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:51:38,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 10:51:38,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:38,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 10:51:38,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 10:51:38,871 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-09 10:51:38,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 78 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:51:38,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:38,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-09 10:51:38,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:39,020 INFO L124 PetriNetUnfolderBase]: 85/178 cut-off events. [2024-11-09 10:51:39,020 INFO L125 PetriNetUnfolderBase]: For 134/134 co-relation queries the response was YES. [2024-11-09 10:51:39,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 493 conditions, 178 events. 85/178 cut-off events. For 134/134 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 587 event pairs, 16 based on Foata normal form. 1/178 useless extension candidates. Maximal degree in co-relation 477. Up to 110 conditions per place. [2024-11-09 10:51:39,022 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 29 selfloop transitions, 8 changer transitions 6/45 dead transitions. [2024-11-09 10:51:39,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 45 transitions, 254 flow [2024-11-09 10:51:39,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 10:51:39,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 10:51:39,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-11-09 10:51:39,024 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47023809523809523 [2024-11-09 10:51:39,024 INFO L175 Difference]: Start difference. First operand has 31 places, 21 transitions, 78 flow. Second operand 7 states and 79 transitions. [2024-11-09 10:51:39,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 45 transitions, 254 flow [2024-11-09 10:51:39,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 45 transitions, 235 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-11-09 10:51:39,026 INFO L231 Difference]: Finished difference. Result has 36 places, 27 transitions, 128 flow [2024-11-09 10:51:39,026 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=128, PETRI_PLACES=36, PETRI_TRANSITIONS=27} [2024-11-09 10:51:39,027 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 10 predicate places. [2024-11-09 10:51:39,027 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 27 transitions, 128 flow [2024-11-09 10:51:39,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:51:39,027 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:39,027 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:39,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 10:51:39,028 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:51:39,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:39,029 INFO L85 PathProgramCache]: Analyzing trace with hash 764365793, now seen corresponding path program 3 times [2024-11-09 10:51:39,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:39,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680183289] [2024-11-09 10:51:39,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:39,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:39,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:39,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:39,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:39,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680183289] [2024-11-09 10:51:39,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680183289] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:51:39,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:51:39,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 10:51:39,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933980278] [2024-11-09 10:51:39,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:51:39,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 10:51:39,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:39,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 10:51:39,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-09 10:51:39,245 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-09 10:51:39,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 128 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:51:39,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:39,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-09 10:51:39,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:39,361 INFO L124 PetriNetUnfolderBase]: 90/188 cut-off events. [2024-11-09 10:51:39,362 INFO L125 PetriNetUnfolderBase]: For 167/167 co-relation queries the response was YES. [2024-11-09 10:51:39,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 577 conditions, 188 events. 90/188 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 657 event pairs, 28 based on Foata normal form. 1/189 useless extension candidates. Maximal degree in co-relation 558. Up to 112 conditions per place. [2024-11-09 10:51:39,364 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 28 selfloop transitions, 11 changer transitions 7/48 dead transitions. [2024-11-09 10:51:39,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 48 transitions, 300 flow [2024-11-09 10:51:39,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 10:51:39,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 10:51:39,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-11-09 10:51:39,365 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-11-09 10:51:39,365 INFO L175 Difference]: Start difference. First operand has 36 places, 27 transitions, 128 flow. Second operand 7 states and 78 transitions. [2024-11-09 10:51:39,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 48 transitions, 300 flow [2024-11-09 10:51:39,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 48 transitions, 290 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-09 10:51:39,368 INFO L231 Difference]: Finished difference. Result has 43 places, 30 transitions, 183 flow [2024-11-09 10:51:39,368 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=183, PETRI_PLACES=43, PETRI_TRANSITIONS=30} [2024-11-09 10:51:39,368 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 17 predicate places. [2024-11-09 10:51:39,369 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 30 transitions, 183 flow [2024-11-09 10:51:39,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:51:39,369 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:39,369 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:39,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 10:51:39,369 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:51:39,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:39,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1003485859, now seen corresponding path program 4 times [2024-11-09 10:51:39,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:39,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886042732] [2024-11-09 10:51:39,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:39,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:39,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:39,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:39,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:39,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886042732] [2024-11-09 10:51:39,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886042732] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:51:39,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:51:39,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 10:51:39,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582314063] [2024-11-09 10:51:39,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:51:39,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 10:51:39,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:39,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 10:51:39,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 10:51:39,559 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-09 10:51:39,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 30 transitions, 183 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:51:39,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:39,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-09 10:51:39,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:39,664 INFO L124 PetriNetUnfolderBase]: 86/179 cut-off events. [2024-11-09 10:51:39,664 INFO L125 PetriNetUnfolderBase]: For 296/296 co-relation queries the response was YES. [2024-11-09 10:51:39,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 613 conditions, 179 events. 86/179 cut-off events. For 296/296 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 593 event pairs, 30 based on Foata normal form. 1/179 useless extension candidates. Maximal degree in co-relation 591. Up to 112 conditions per place. [2024-11-09 10:51:39,666 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 26 selfloop transitions, 12 changer transitions 7/47 dead transitions. [2024-11-09 10:51:39,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 47 transitions, 348 flow [2024-11-09 10:51:39,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 10:51:39,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 10:51:39,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 76 transitions. [2024-11-09 10:51:39,669 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-11-09 10:51:39,669 INFO L175 Difference]: Start difference. First operand has 43 places, 30 transitions, 183 flow. Second operand 7 states and 76 transitions. [2024-11-09 10:51:39,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 47 transitions, 348 flow [2024-11-09 10:51:39,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 47 transitions, 314 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-11-09 10:51:39,673 INFO L231 Difference]: Finished difference. Result has 45 places, 32 transitions, 214 flow [2024-11-09 10:51:39,673 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=214, PETRI_PLACES=45, PETRI_TRANSITIONS=32} [2024-11-09 10:51:39,675 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 19 predicate places. [2024-11-09 10:51:39,675 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 32 transitions, 214 flow [2024-11-09 10:51:39,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:51:39,676 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:39,676 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:39,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 10:51:39,677 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:51:39,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:39,677 INFO L85 PathProgramCache]: Analyzing trace with hash 896637833, now seen corresponding path program 5 times [2024-11-09 10:51:39,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:39,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363465905] [2024-11-09 10:51:39,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:39,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:39,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:39,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:39,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:39,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363465905] [2024-11-09 10:51:39,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363465905] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:51:39,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:51:39,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 10:51:39,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288970093] [2024-11-09 10:51:39,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:51:39,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 10:51:39,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:39,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 10:51:39,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 10:51:39,854 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-09 10:51:39,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 32 transitions, 214 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:51:39,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:39,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-09 10:51:39,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:39,936 INFO L124 PetriNetUnfolderBase]: 85/179 cut-off events. [2024-11-09 10:51:39,936 INFO L125 PetriNetUnfolderBase]: For 278/278 co-relation queries the response was YES. [2024-11-09 10:51:39,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 622 conditions, 179 events. 85/179 cut-off events. For 278/278 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 600 event pairs, 26 based on Foata normal form. 1/180 useless extension candidates. Maximal degree in co-relation 599. Up to 114 conditions per place. [2024-11-09 10:51:39,938 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 29 selfloop transitions, 13 changer transitions 4/48 dead transitions. [2024-11-09 10:51:39,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 48 transitions, 362 flow [2024-11-09 10:51:39,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 10:51:39,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 10:51:39,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 77 transitions. [2024-11-09 10:51:39,939 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-11-09 10:51:39,939 INFO L175 Difference]: Start difference. First operand has 45 places, 32 transitions, 214 flow. Second operand 7 states and 77 transitions. [2024-11-09 10:51:39,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 48 transitions, 362 flow [2024-11-09 10:51:39,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 48 transitions, 328 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-11-09 10:51:39,942 INFO L231 Difference]: Finished difference. Result has 46 places, 33 transitions, 219 flow [2024-11-09 10:51:39,942 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=219, PETRI_PLACES=46, PETRI_TRANSITIONS=33} [2024-11-09 10:51:39,942 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 20 predicate places. [2024-11-09 10:51:39,943 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 33 transitions, 219 flow [2024-11-09 10:51:39,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:51:39,943 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:39,943 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:39,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 10:51:39,943 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:51:39,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:39,944 INFO L85 PathProgramCache]: Analyzing trace with hash -225855025, now seen corresponding path program 6 times [2024-11-09 10:51:39,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:39,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018908267] [2024-11-09 10:51:39,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:39,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:39,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:40,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:40,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:40,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018908267] [2024-11-09 10:51:40,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018908267] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:51:40,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:51:40,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 10:51:40,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312792752] [2024-11-09 10:51:40,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:51:40,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 10:51:40,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:40,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 10:51:40,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-09 10:51:40,089 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-09 10:51:40,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 33 transitions, 219 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:51:40,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:40,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-09 10:51:40,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:40,178 INFO L124 PetriNetUnfolderBase]: 84/170 cut-off events. [2024-11-09 10:51:40,178 INFO L125 PetriNetUnfolderBase]: For 309/309 co-relation queries the response was YES. [2024-11-09 10:51:40,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 593 conditions, 170 events. 84/170 cut-off events. For 309/309 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 534 event pairs, 29 based on Foata normal form. 1/170 useless extension candidates. Maximal degree in co-relation 574. Up to 114 conditions per place. [2024-11-09 10:51:40,180 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 23 selfloop transitions, 13 changer transitions 6/44 dead transitions. [2024-11-09 10:51:40,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 44 transitions, 340 flow [2024-11-09 10:51:40,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 10:51:40,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 10:51:40,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 73 transitions. [2024-11-09 10:51:40,182 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43452380952380953 [2024-11-09 10:51:40,182 INFO L175 Difference]: Start difference. First operand has 46 places, 33 transitions, 219 flow. Second operand 7 states and 73 transitions. [2024-11-09 10:51:40,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 44 transitions, 340 flow [2024-11-09 10:51:40,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 44 transitions, 310 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-11-09 10:51:40,183 INFO L231 Difference]: Finished difference. Result has 47 places, 32 transitions, 208 flow [2024-11-09 10:51:40,184 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=208, PETRI_PLACES=47, PETRI_TRANSITIONS=32} [2024-11-09 10:51:40,184 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 21 predicate places. [2024-11-09 10:51:40,184 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 32 transitions, 208 flow [2024-11-09 10:51:40,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:51:40,185 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:40,185 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:40,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 10:51:40,185 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:51:40,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:40,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1923546344, now seen corresponding path program 1 times [2024-11-09 10:51:40,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:40,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412182931] [2024-11-09 10:51:40,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:40,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:40,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:40,372 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:40,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:40,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412182931] [2024-11-09 10:51:40,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412182931] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:51:40,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480656664] [2024-11-09 10:51:40,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:40,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:51:40,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:51:40,376 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) [2024-11-09 10:51:40,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 10:51:40,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:40,425 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 10:51:40,429 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:51:40,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:40,613 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:51:40,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:40,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480656664] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:51:40,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:51:40,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-11-09 10:51:40,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622204733] [2024-11-09 10:51:40,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:51:40,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-09 10:51:40,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:40,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-09 10:51:40,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552 [2024-11-09 10:51:40,761 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-09 10:51:40,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 32 transitions, 208 flow. Second operand has 24 states, 24 states have (on average 5.75) internal successors, (138), 24 states have internal predecessors, (138), 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) [2024-11-09 10:51:40,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:40,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-09 10:51:40,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:41,520 INFO L124 PetriNetUnfolderBase]: 318/613 cut-off events. [2024-11-09 10:51:41,521 INFO L125 PetriNetUnfolderBase]: For 477/477 co-relation queries the response was YES. [2024-11-09 10:51:41,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1691 conditions, 613 events. 318/613 cut-off events. For 477/477 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2633 event pairs, 14 based on Foata normal form. 17/630 useless extension candidates. Maximal degree in co-relation 1648. Up to 144 conditions per place. [2024-11-09 10:51:41,524 INFO L140 encePairwiseOnDemand]: 12/24 looper letters, 125 selfloop transitions, 63 changer transitions 8/197 dead transitions. [2024-11-09 10:51:41,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 197 transitions, 1132 flow [2024-11-09 10:51:41,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-09 10:51:41,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-11-09 10:51:41,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 328 transitions. [2024-11-09 10:51:41,526 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4019607843137255 [2024-11-09 10:51:41,526 INFO L175 Difference]: Start difference. First operand has 47 places, 32 transitions, 208 flow. Second operand 34 states and 328 transitions. [2024-11-09 10:51:41,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 197 transitions, 1132 flow [2024-11-09 10:51:41,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 197 transitions, 1065 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-11-09 10:51:41,530 INFO L231 Difference]: Finished difference. Result has 77 places, 89 transitions, 540 flow [2024-11-09 10:51:41,530 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=540, PETRI_PLACES=77, PETRI_TRANSITIONS=89} [2024-11-09 10:51:41,530 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 51 predicate places. [2024-11-09 10:51:41,530 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 89 transitions, 540 flow [2024-11-09 10:51:41,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.75) internal successors, (138), 24 states have internal predecessors, (138), 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) [2024-11-09 10:51:41,531 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:41,531 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:41,545 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 10:51:41,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:51:41,736 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:51:41,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:41,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1139730162, now seen corresponding path program 2 times [2024-11-09 10:51:41,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:41,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438313852] [2024-11-09 10:51:41,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:41,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:41,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:41,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:41,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:41,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438313852] [2024-11-09 10:51:41,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438313852] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:51:41,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588311724] [2024-11-09 10:51:41,899 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 10:51:41,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:51:41,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:51:41,900 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) [2024-11-09 10:51:41,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 10:51:41,942 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 10:51:41,943 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:51:41,944 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 10:51:41,945 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:51:42,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:42,092 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:51:42,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:42,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588311724] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:51:42,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:51:42,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-11-09 10:51:42,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487709060] [2024-11-09 10:51:42,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:51:42,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-09 10:51:42,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:42,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-09 10:51:42,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2024-11-09 10:51:42,268 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-09 10:51:42,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 89 transitions, 540 flow. Second operand has 24 states, 24 states have (on average 5.75) internal successors, (138), 24 states have internal predecessors, (138), 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) [2024-11-09 10:51:42,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:42,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-09 10:51:42,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:42,994 INFO L124 PetriNetUnfolderBase]: 408/781 cut-off events. [2024-11-09 10:51:42,994 INFO L125 PetriNetUnfolderBase]: For 906/906 co-relation queries the response was YES. [2024-11-09 10:51:42,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2680 conditions, 781 events. 408/781 cut-off events. For 906/906 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3691 event pairs, 31 based on Foata normal form. 2/783 useless extension candidates. Maximal degree in co-relation 2620. Up to 374 conditions per place. [2024-11-09 10:51:42,999 INFO L140 encePairwiseOnDemand]: 12/24 looper letters, 110 selfloop transitions, 93 changer transitions 8/212 dead transitions. [2024-11-09 10:51:42,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 212 transitions, 1497 flow [2024-11-09 10:51:42,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-09 10:51:42,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-11-09 10:51:43,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 285 transitions. [2024-11-09 10:51:43,000 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38306451612903225 [2024-11-09 10:51:43,000 INFO L175 Difference]: Start difference. First operand has 77 places, 89 transitions, 540 flow. Second operand 31 states and 285 transitions. [2024-11-09 10:51:43,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 212 transitions, 1497 flow [2024-11-09 10:51:43,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 212 transitions, 1358 flow, removed 63 selfloop flow, removed 4 redundant places. [2024-11-09 10:51:43,007 INFO L231 Difference]: Finished difference. Result has 111 places, 132 transitions, 956 flow [2024-11-09 10:51:43,008 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=956, PETRI_PLACES=111, PETRI_TRANSITIONS=132} [2024-11-09 10:51:43,008 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 85 predicate places. [2024-11-09 10:51:43,008 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 132 transitions, 956 flow [2024-11-09 10:51:43,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.75) internal successors, (138), 24 states have internal predecessors, (138), 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) [2024-11-09 10:51:43,008 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:43,008 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:43,022 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 10:51:43,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-09 10:51:43,210 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:51:43,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:43,210 INFO L85 PathProgramCache]: Analyzing trace with hash -276693110, now seen corresponding path program 3 times [2024-11-09 10:51:43,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:43,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487375588] [2024-11-09 10:51:43,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:43,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:43,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:43,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:43,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:43,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487375588] [2024-11-09 10:51:43,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487375588] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:51:43,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402922985] [2024-11-09 10:51:43,383 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 10:51:43,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:51:43,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:51:43,385 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) [2024-11-09 10:51:43,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 10:51:43,425 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 10:51:43,425 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:51:43,426 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 10:51:43,427 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:51:43,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:43,580 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:51:43,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:43,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402922985] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:51:43,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:51:43,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-11-09 10:51:43,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245266165] [2024-11-09 10:51:43,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:51:43,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-09 10:51:43,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:43,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-09 10:51:43,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2024-11-09 10:51:43,737 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-09 10:51:43,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 132 transitions, 956 flow. Second operand has 24 states, 24 states have (on average 5.75) internal successors, (138), 24 states have internal predecessors, (138), 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) [2024-11-09 10:51:43,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:43,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-09 10:51:43,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:45,153 INFO L124 PetriNetUnfolderBase]: 623/1198 cut-off events. [2024-11-09 10:51:45,153 INFO L125 PetriNetUnfolderBase]: For 2679/2679 co-relation queries the response was YES. [2024-11-09 10:51:45,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4775 conditions, 1198 events. 623/1198 cut-off events. For 2679/2679 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 6370 event pairs, 20 based on Foata normal form. 2/1198 useless extension candidates. Maximal degree in co-relation 4739. Up to 215 conditions per place. [2024-11-09 10:51:45,161 INFO L140 encePairwiseOnDemand]: 12/24 looper letters, 170 selfloop transitions, 197 changer transitions 8/376 dead transitions. [2024-11-09 10:51:45,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 376 transitions, 3021 flow [2024-11-09 10:51:45,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-09 10:51:45,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2024-11-09 10:51:45,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 535 transitions. [2024-11-09 10:51:45,165 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3715277777777778 [2024-11-09 10:51:45,166 INFO L175 Difference]: Start difference. First operand has 111 places, 132 transitions, 956 flow. Second operand 60 states and 535 transitions. [2024-11-09 10:51:45,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 376 transitions, 3021 flow [2024-11-09 10:51:45,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 376 transitions, 2927 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-11-09 10:51:45,208 INFO L231 Difference]: Finished difference. Result has 176 places, 230 transitions, 2170 flow [2024-11-09 10:51:45,211 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=886, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=2170, PETRI_PLACES=176, PETRI_TRANSITIONS=230} [2024-11-09 10:51:45,212 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 150 predicate places. [2024-11-09 10:51:45,212 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 230 transitions, 2170 flow [2024-11-09 10:51:45,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.75) internal successors, (138), 24 states have internal predecessors, (138), 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) [2024-11-09 10:51:45,212 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:45,212 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:45,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 10:51:45,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:51:45,413 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:51:45,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:45,414 INFO L85 PathProgramCache]: Analyzing trace with hash -408965150, now seen corresponding path program 4 times [2024-11-09 10:51:45,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:45,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785087962] [2024-11-09 10:51:45,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:45,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:45,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:45,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:45,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:45,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785087962] [2024-11-09 10:51:45,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785087962] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:51:45,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554368244] [2024-11-09 10:51:45,556 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 10:51:45,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:51:45,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:51:45,557 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) [2024-11-09 10:51:45,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 10:51:45,594 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 10:51:45,595 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:51:45,595 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 10:51:45,596 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:51:45,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:45,735 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:51:45,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:45,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554368244] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:51:45,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:51:45,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-11-09 10:51:45,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340823346] [2024-11-09 10:51:45,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:51:45,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-09 10:51:45,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:45,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-09 10:51:45,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2024-11-09 10:51:45,877 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-09 10:51:45,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 230 transitions, 2170 flow. Second operand has 24 states, 24 states have (on average 5.791666666666667) internal successors, (139), 24 states have internal predecessors, (139), 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) [2024-11-09 10:51:45,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:45,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-09 10:51:45,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:47,315 INFO L124 PetriNetUnfolderBase]: 860/1618 cut-off events. [2024-11-09 10:51:47,315 INFO L125 PetriNetUnfolderBase]: For 13647/13647 co-relation queries the response was YES. [2024-11-09 10:51:47,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8907 conditions, 1618 events. 860/1618 cut-off events. For 13647/13647 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 8983 event pairs, 20 based on Foata normal form. 2/1616 useless extension candidates. Maximal degree in co-relation 8597. Up to 309 conditions per place. [2024-11-09 10:51:47,329 INFO L140 encePairwiseOnDemand]: 11/24 looper letters, 178 selfloop transitions, 276 changer transitions 8/463 dead transitions. [2024-11-09 10:51:47,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 463 transitions, 4928 flow [2024-11-09 10:51:47,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-09 10:51:47,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2024-11-09 10:51:47,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 524 transitions. [2024-11-09 10:51:47,332 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3830409356725146 [2024-11-09 10:51:47,332 INFO L175 Difference]: Start difference. First operand has 176 places, 230 transitions, 2170 flow. Second operand 57 states and 524 transitions. [2024-11-09 10:51:47,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 463 transitions, 4928 flow [2024-11-09 10:51:47,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 463 transitions, 4616 flow, removed 91 selfloop flow, removed 8 redundant places. [2024-11-09 10:51:47,376 INFO L231 Difference]: Finished difference. Result has 231 places, 319 transitions, 3434 flow [2024-11-09 10:51:47,377 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1922, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=3434, PETRI_PLACES=231, PETRI_TRANSITIONS=319} [2024-11-09 10:51:47,377 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 205 predicate places. [2024-11-09 10:51:47,377 INFO L471 AbstractCegarLoop]: Abstraction has has 231 places, 319 transitions, 3434 flow [2024-11-09 10:51:47,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.791666666666667) internal successors, (139), 24 states have internal predecessors, (139), 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) [2024-11-09 10:51:47,378 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:47,378 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:47,390 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 10:51:47,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:51:47,582 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:51:47,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:47,582 INFO L85 PathProgramCache]: Analyzing trace with hash -524065846, now seen corresponding path program 5 times [2024-11-09 10:51:47,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:47,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192777602] [2024-11-09 10:51:47,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:47,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:47,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:47,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:47,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:47,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192777602] [2024-11-09 10:51:47,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192777602] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:51:47,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623356905] [2024-11-09 10:51:47,707 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 10:51:47,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:51:47,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:51:47,708 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) [2024-11-09 10:51:47,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 10:51:47,742 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 10:51:47,742 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:51:47,743 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 10:51:47,743 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:51:47,857 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:47,857 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:51:47,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:47,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623356905] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:51:47,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:51:47,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-11-09 10:51:47,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289232128] [2024-11-09 10:51:47,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:51:47,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-09 10:51:47,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:47,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-09 10:51:47,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=419, Unknown=0, NotChecked=0, Total=552 [2024-11-09 10:51:47,968 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-09 10:51:47,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 319 transitions, 3434 flow. Second operand has 24 states, 24 states have (on average 5.75) internal successors, (138), 24 states have internal predecessors, (138), 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) [2024-11-09 10:51:47,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:47,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-09 10:51:47,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:48,287 INFO L124 PetriNetUnfolderBase]: 867/1639 cut-off events. [2024-11-09 10:51:48,287 INFO L125 PetriNetUnfolderBase]: For 17106/17106 co-relation queries the response was YES. [2024-11-09 10:51:48,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10139 conditions, 1639 events. 867/1639 cut-off events. For 17106/17106 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 9171 event pairs, 75 based on Foata normal form. 2/1637 useless extension candidates. Maximal degree in co-relation 9814. Up to 1090 conditions per place. [2024-11-09 10:51:48,306 INFO L140 encePairwiseOnDemand]: 13/24 looper letters, 166 selfloop transitions, 188 changer transitions 8/363 dead transitions. [2024-11-09 10:51:48,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 363 transitions, 4471 flow [2024-11-09 10:51:48,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 10:51:48,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-09 10:51:48,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 144 transitions. [2024-11-09 10:51:48,308 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-11-09 10:51:48,308 INFO L175 Difference]: Start difference. First operand has 231 places, 319 transitions, 3434 flow. Second operand 16 states and 144 transitions. [2024-11-09 10:51:48,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 363 transitions, 4471 flow [2024-11-09 10:51:48,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 363 transitions, 4135 flow, removed 68 selfloop flow, removed 25 redundant places. [2024-11-09 10:51:48,382 INFO L231 Difference]: Finished difference. Result has 225 places, 327 transitions, 3871 flow [2024-11-09 10:51:48,383 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=3143, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3871, PETRI_PLACES=225, PETRI_TRANSITIONS=327} [2024-11-09 10:51:48,384 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 199 predicate places. [2024-11-09 10:51:48,384 INFO L471 AbstractCegarLoop]: Abstraction has has 225 places, 327 transitions, 3871 flow [2024-11-09 10:51:48,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.75) internal successors, (138), 24 states have internal predecessors, (138), 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) [2024-11-09 10:51:48,384 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:48,384 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:48,399 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 10:51:48,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-09 10:51:48,585 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:51:48,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:48,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1624730690, now seen corresponding path program 6 times [2024-11-09 10:51:48,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:48,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318919768] [2024-11-09 10:51:48,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:48,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:48,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:48,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:48,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:48,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318919768] [2024-11-09 10:51:48,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318919768] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:51:48,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586759529] [2024-11-09 10:51:48,705 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 10:51:48,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:51:48,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:51:48,707 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) [2024-11-09 10:51:48,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 10:51:48,751 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-09 10:51:48,751 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:51:48,752 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 10:51:48,753 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:51:48,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:48,894 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:51:49,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:49,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586759529] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:51:49,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:51:49,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-09 10:51:49,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973834929] [2024-11-09 10:51:49,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:51:49,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 10:51:49,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:49,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 10:51:49,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2024-11-09 10:51:49,015 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-09 10:51:49,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 327 transitions, 3871 flow. Second operand has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 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) [2024-11-09 10:51:49,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:49,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-09 10:51:49,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:49,501 INFO L124 PetriNetUnfolderBase]: 882/1672 cut-off events. [2024-11-09 10:51:49,501 INFO L125 PetriNetUnfolderBase]: For 13776/13776 co-relation queries the response was YES. [2024-11-09 10:51:49,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10477 conditions, 1672 events. 882/1672 cut-off events. For 13776/13776 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 9410 event pairs, 84 based on Foata normal form. 2/1674 useless extension candidates. Maximal degree in co-relation 10416. Up to 1141 conditions per place. [2024-11-09 10:51:49,516 INFO L140 encePairwiseOnDemand]: 13/24 looper letters, 174 selfloop transitions, 195 changer transitions 8/378 dead transitions. [2024-11-09 10:51:49,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 378 transitions, 4956 flow [2024-11-09 10:51:49,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-09 10:51:49,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-09 10:51:49,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 171 transitions. [2024-11-09 10:51:49,518 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-11-09 10:51:49,518 INFO L175 Difference]: Start difference. First operand has 225 places, 327 transitions, 3871 flow. Second operand 20 states and 171 transitions. [2024-11-09 10:51:49,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 378 transitions, 4956 flow [2024-11-09 10:51:49,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 378 transitions, 4832 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-11-09 10:51:49,573 INFO L231 Difference]: Finished difference. Result has 243 places, 338 transitions, 4548 flow [2024-11-09 10:51:49,574 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=3750, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=4548, PETRI_PLACES=243, PETRI_TRANSITIONS=338} [2024-11-09 10:51:49,574 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 217 predicate places. [2024-11-09 10:51:49,574 INFO L471 AbstractCegarLoop]: Abstraction has has 243 places, 338 transitions, 4548 flow [2024-11-09 10:51:49,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 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) [2024-11-09 10:51:49,575 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:49,575 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:49,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 10:51:49,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:51:49,778 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:51:49,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:49,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1797978382, now seen corresponding path program 7 times [2024-11-09 10:51:49,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:49,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804432822] [2024-11-09 10:51:49,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:49,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:49,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:49,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:49,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:49,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804432822] [2024-11-09 10:51:49,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804432822] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:51:49,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795488075] [2024-11-09 10:51:49,904 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 10:51:49,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:51:49,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:51:49,906 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) [2024-11-09 10:51:49,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 10:51:49,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:49,944 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 10:51:49,945 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:51:50,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:50,093 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:51:50,209 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:50,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795488075] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:51:50,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:51:50,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-09 10:51:50,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103140634] [2024-11-09 10:51:50,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:51:50,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 10:51:50,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:50,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 10:51:50,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=464, Unknown=0, NotChecked=0, Total=600 [2024-11-09 10:51:50,214 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-09 10:51:50,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 338 transitions, 4548 flow. Second operand has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 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) [2024-11-09 10:51:50,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:50,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-09 10:51:50,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:50,642 INFO L124 PetriNetUnfolderBase]: 903/1727 cut-off events. [2024-11-09 10:51:50,642 INFO L125 PetriNetUnfolderBase]: For 16149/16149 co-relation queries the response was YES. [2024-11-09 10:51:50,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11581 conditions, 1727 events. 903/1727 cut-off events. For 16149/16149 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 9907 event pairs, 86 based on Foata normal form. 2/1729 useless extension candidates. Maximal degree in co-relation 11515. Up to 1213 conditions per place. [2024-11-09 10:51:50,655 INFO L140 encePairwiseOnDemand]: 13/24 looper letters, 175 selfloop transitions, 204 changer transitions 8/388 dead transitions. [2024-11-09 10:51:50,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 388 transitions, 5726 flow [2024-11-09 10:51:50,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 10:51:50,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-09 10:51:50,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 156 transitions. [2024-11-09 10:51:50,656 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-11-09 10:51:50,657 INFO L175 Difference]: Start difference. First operand has 243 places, 338 transitions, 4548 flow. Second operand 18 states and 156 transitions. [2024-11-09 10:51:50,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 388 transitions, 5726 flow [2024-11-09 10:51:50,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 388 transitions, 5664 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-11-09 10:51:50,719 INFO L231 Difference]: Finished difference. Result has 254 places, 354 transitions, 5532 flow [2024-11-09 10:51:50,720 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=4486, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5532, PETRI_PLACES=254, PETRI_TRANSITIONS=354} [2024-11-09 10:51:50,720 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 228 predicate places. [2024-11-09 10:51:50,720 INFO L471 AbstractCegarLoop]: Abstraction has has 254 places, 354 transitions, 5532 flow [2024-11-09 10:51:50,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 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) [2024-11-09 10:51:50,720 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:50,720 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:50,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-09 10:51:50,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:51:50,921 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:51:50,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:50,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1909243592, now seen corresponding path program 8 times [2024-11-09 10:51:50,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:50,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112287118] [2024-11-09 10:51:50,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:50,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:50,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:51,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:51,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:51,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112287118] [2024-11-09 10:51:51,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112287118] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:51:51,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199853518] [2024-11-09 10:51:51,030 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 10:51:51,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:51:51,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:51:51,032 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) [2024-11-09 10:51:51,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 10:51:51,068 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 10:51:51,068 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:51:51,068 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 10:51:51,069 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:51:51,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:51,207 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:51:51,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:51,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199853518] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:51:51,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:51:51,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-09 10:51:51,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687707783] [2024-11-09 10:51:51,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:51:51,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 10:51:51,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:51,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 10:51:51,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=475, Unknown=0, NotChecked=0, Total=600 [2024-11-09 10:51:51,329 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-09 10:51:51,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 354 transitions, 5532 flow. Second operand has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 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) [2024-11-09 10:51:51,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:51,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-09 10:51:51,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:51,911 INFO L124 PetriNetUnfolderBase]: 909/1745 cut-off events. [2024-11-09 10:51:51,911 INFO L125 PetriNetUnfolderBase]: For 20142/20142 co-relation queries the response was YES. [2024-11-09 10:51:51,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12819 conditions, 1745 events. 909/1745 cut-off events. For 20142/20142 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 10046 event pairs, 89 based on Foata normal form. 2/1747 useless extension candidates. Maximal degree in co-relation 12748. Up to 1122 conditions per place. [2024-11-09 10:51:51,925 INFO L140 encePairwiseOnDemand]: 13/24 looper letters, 155 selfloop transitions, 239 changer transitions 8/403 dead transitions. [2024-11-09 10:51:51,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 403 transitions, 6654 flow [2024-11-09 10:51:51,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-09 10:51:51,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-09 10:51:51,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 201 transitions. [2024-11-09 10:51:51,927 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.335 [2024-11-09 10:51:51,927 INFO L175 Difference]: Start difference. First operand has 254 places, 354 transitions, 5532 flow. Second operand 25 states and 201 transitions. [2024-11-09 10:51:51,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 403 transitions, 6654 flow [2024-11-09 10:51:52,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 403 transitions, 6581 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-11-09 10:51:52,006 INFO L231 Difference]: Finished difference. Result has 273 places, 364 transitions, 6357 flow [2024-11-09 10:51:52,006 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=5466, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=229, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=6357, PETRI_PLACES=273, PETRI_TRANSITIONS=364} [2024-11-09 10:51:52,006 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 247 predicate places. [2024-11-09 10:51:52,007 INFO L471 AbstractCegarLoop]: Abstraction has has 273 places, 364 transitions, 6357 flow [2024-11-09 10:51:52,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 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) [2024-11-09 10:51:52,007 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:52,007 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:52,019 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 10:51:52,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-09 10:51:52,212 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:51:52,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:52,212 INFO L85 PathProgramCache]: Analyzing trace with hash 371064952, now seen corresponding path program 9 times [2024-11-09 10:51:52,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:52,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159452626] [2024-11-09 10:51:52,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:52,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:52,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:52,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:52,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:52,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159452626] [2024-11-09 10:51:52,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159452626] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:51:52,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596702692] [2024-11-09 10:51:52,349 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 10:51:52,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:51:52,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:51:52,351 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) [2024-11-09 10:51:52,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 10:51:52,386 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 10:51:52,386 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:51:52,387 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 10:51:52,388 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:51:52,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:52,530 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:51:52,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:52,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596702692] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:51:52,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:51:52,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-09 10:51:52,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091620183] [2024-11-09 10:51:52,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:51:52,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 10:51:52,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:52,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 10:51:52,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2024-11-09 10:51:52,679 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-09 10:51:52,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 364 transitions, 6357 flow. Second operand has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 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) [2024-11-09 10:51:52,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:52,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-09 10:51:52,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:53,998 INFO L124 PetriNetUnfolderBase]: 1143/2174 cut-off events. [2024-11-09 10:51:53,999 INFO L125 PetriNetUnfolderBase]: For 32444/32444 co-relation queries the response was YES. [2024-11-09 10:51:54,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17222 conditions, 2174 events. 1143/2174 cut-off events. For 32444/32444 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 13047 event pairs, 78 based on Foata normal form. 3/2177 useless extension candidates. Maximal degree in co-relation 17146. Up to 880 conditions per place. [2024-11-09 10:51:54,015 INFO L140 encePairwiseOnDemand]: 11/24 looper letters, 222 selfloop transitions, 353 changer transitions 12/588 dead transitions. [2024-11-09 10:51:54,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 588 transitions, 10378 flow [2024-11-09 10:51:54,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-09 10:51:54,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2024-11-09 10:51:54,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 425 transitions. [2024-11-09 10:51:54,019 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3689236111111111 [2024-11-09 10:51:54,019 INFO L175 Difference]: Start difference. First operand has 273 places, 364 transitions, 6357 flow. Second operand 48 states and 425 transitions. [2024-11-09 10:51:54,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 588 transitions, 10378 flow [2024-11-09 10:51:54,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 588 transitions, 10180 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-11-09 10:51:54,127 INFO L231 Difference]: Finished difference. Result has 327 places, 487 transitions, 9579 flow [2024-11-09 10:51:54,127 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=6180, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=243, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=9579, PETRI_PLACES=327, PETRI_TRANSITIONS=487} [2024-11-09 10:51:54,128 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 301 predicate places. [2024-11-09 10:51:54,128 INFO L471 AbstractCegarLoop]: Abstraction has has 327 places, 487 transitions, 9579 flow [2024-11-09 10:51:54,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 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) [2024-11-09 10:51:54,128 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:54,128 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:54,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-09 10:51:54,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 10:51:54,329 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:51:54,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:54,329 INFO L85 PathProgramCache]: Analyzing trace with hash 509593102, now seen corresponding path program 10 times [2024-11-09 10:51:54,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:54,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703354408] [2024-11-09 10:51:54,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:54,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:54,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:54,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:54,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:54,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703354408] [2024-11-09 10:51:54,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703354408] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:51:54,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228309025] [2024-11-09 10:51:54,457 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 10:51:54,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:51:54,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:51:54,459 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) [2024-11-09 10:51:54,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 10:51:54,498 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 10:51:54,499 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:51:54,499 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 10:51:54,500 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:51:54,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:54,620 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:51:54,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:54,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228309025] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:51:54,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:51:54,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-09 10:51:54,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386240336] [2024-11-09 10:51:54,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:51:54,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 10:51:54,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:54,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 10:51:54,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=481, Unknown=0, NotChecked=0, Total=600 [2024-11-09 10:51:54,742 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-09 10:51:54,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 487 transitions, 9579 flow. Second operand has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 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) [2024-11-09 10:51:54,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:54,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-09 10:51:54,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:56,244 INFO L124 PetriNetUnfolderBase]: 1190/2264 cut-off events. [2024-11-09 10:51:56,244 INFO L125 PetriNetUnfolderBase]: For 52631/52631 co-relation queries the response was YES. [2024-11-09 10:51:56,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20708 conditions, 2264 events. 1190/2264 cut-off events. For 52631/52631 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 13708 event pairs, 78 based on Foata normal form. 3/2267 useless extension candidates. Maximal degree in co-relation 20610. Up to 1007 conditions per place. [2024-11-09 10:51:56,264 INFO L140 encePairwiseOnDemand]: 12/24 looper letters, 211 selfloop transitions, 390 changer transitions 12/614 dead transitions. [2024-11-09 10:51:56,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 614 transitions, 12110 flow [2024-11-09 10:51:56,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-09 10:51:56,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2024-11-09 10:51:56,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 454 transitions. [2024-11-09 10:51:56,265 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33779761904761907 [2024-11-09 10:51:56,265 INFO L175 Difference]: Start difference. First operand has 327 places, 487 transitions, 9579 flow. Second operand 56 states and 454 transitions. [2024-11-09 10:51:56,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 614 transitions, 12110 flow [2024-11-09 10:51:56,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 614 transitions, 11408 flow, removed 312 selfloop flow, removed 14 redundant places. [2024-11-09 10:51:56,601 INFO L231 Difference]: Finished difference. Result has 372 places, 526 transitions, 10762 flow [2024-11-09 10:51:56,601 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=9095, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=352, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=10762, PETRI_PLACES=372, PETRI_TRANSITIONS=526} [2024-11-09 10:51:56,602 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 346 predicate places. [2024-11-09 10:51:56,602 INFO L471 AbstractCegarLoop]: Abstraction has has 372 places, 526 transitions, 10762 flow [2024-11-09 10:51:56,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 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) [2024-11-09 10:51:56,602 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:56,602 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:56,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-09 10:51:56,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-09 10:51:56,803 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:51:56,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:56,803 INFO L85 PathProgramCache]: Analyzing trace with hash 777408522, now seen corresponding path program 11 times [2024-11-09 10:51:56,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:56,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643172931] [2024-11-09 10:51:56,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:56,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:56,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:56,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:56,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:56,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643172931] [2024-11-09 10:51:56,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643172931] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:51:56,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121449436] [2024-11-09 10:51:56,907 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 10:51:56,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:51:56,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:51:56,909 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) [2024-11-09 10:51:56,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 10:51:56,943 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 10:51:56,943 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:51:56,944 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 10:51:56,945 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:51:57,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:57,052 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:51:57,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:57,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121449436] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:51:57,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:51:57,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-09 10:51:57,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217772888] [2024-11-09 10:51:57,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:51:57,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 10:51:57,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:57,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 10:51:57,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=471, Unknown=0, NotChecked=0, Total=600 [2024-11-09 10:51:57,151 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-09 10:51:57,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 526 transitions, 10762 flow. Second operand has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 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) [2024-11-09 10:51:57,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:57,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-09 10:51:57,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:57,838 INFO L124 PetriNetUnfolderBase]: 1194/2274 cut-off events. [2024-11-09 10:51:57,838 INFO L125 PetriNetUnfolderBase]: For 54094/54094 co-relation queries the response was YES. [2024-11-09 10:51:57,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21202 conditions, 2274 events. 1194/2274 cut-off events. For 54094/54094 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 13840 event pairs, 73 based on Foata normal form. 2/2276 useless extension candidates. Maximal degree in co-relation 20890. Up to 1512 conditions per place. [2024-11-09 10:51:57,863 INFO L140 encePairwiseOnDemand]: 13/24 looper letters, 274 selfloop transitions, 279 changer transitions 8/562 dead transitions. [2024-11-09 10:51:57,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 562 transitions, 12203 flow [2024-11-09 10:51:57,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-09 10:51:57,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-09 10:51:57,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 158 transitions. [2024-11-09 10:51:57,865 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34649122807017546 [2024-11-09 10:51:57,865 INFO L175 Difference]: Start difference. First operand has 372 places, 526 transitions, 10762 flow. Second operand 19 states and 158 transitions. [2024-11-09 10:51:57,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 562 transitions, 12203 flow [2024-11-09 10:51:58,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 562 transitions, 11916 flow, removed 85 selfloop flow, removed 25 redundant places. [2024-11-09 10:51:58,125 INFO L231 Difference]: Finished difference. Result has 369 places, 531 transitions, 11545 flow [2024-11-09 10:51:58,126 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=10475, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=274, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=11545, PETRI_PLACES=369, PETRI_TRANSITIONS=531} [2024-11-09 10:51:58,126 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 343 predicate places. [2024-11-09 10:51:58,126 INFO L471 AbstractCegarLoop]: Abstraction has has 369 places, 531 transitions, 11545 flow [2024-11-09 10:51:58,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 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) [2024-11-09 10:51:58,127 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:58,127 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:58,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-09 10:51:58,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-09 10:51:58,327 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:51:58,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:58,328 INFO L85 PathProgramCache]: Analyzing trace with hash -2082491284, now seen corresponding path program 12 times [2024-11-09 10:51:58,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:58,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886816586] [2024-11-09 10:51:58,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:58,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:58,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:58,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:58,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:58,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886816586] [2024-11-09 10:51:58,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886816586] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:51:58,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24021057] [2024-11-09 10:51:58,444 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 10:51:58,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:51:58,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:51:58,445 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) [2024-11-09 10:51:58,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 10:51:58,478 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-09 10:51:58,478 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:51:58,478 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 10:51:58,495 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:51:58,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:58,607 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:51:58,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:58,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24021057] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:51:58,700 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:51:58,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-09 10:51:58,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219912460] [2024-11-09 10:51:58,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:51:58,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 10:51:58,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:58,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 10:51:58,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2024-11-09 10:51:58,707 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-09 10:51:58,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 531 transitions, 11545 flow. Second operand has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 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) [2024-11-09 10:51:58,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:58,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-09 10:51:58,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:59,510 INFO L124 PetriNetUnfolderBase]: 1195/2275 cut-off events. [2024-11-09 10:51:59,511 INFO L125 PetriNetUnfolderBase]: For 60748/60748 co-relation queries the response was YES. [2024-11-09 10:51:59,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22095 conditions, 2275 events. 1195/2275 cut-off events. For 60748/60748 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 13821 event pairs, 73 based on Foata normal form. 1/2276 useless extension candidates. Maximal degree in co-relation 21984. Up to 1515 conditions per place. [2024-11-09 10:51:59,535 INFO L140 encePairwiseOnDemand]: 13/24 looper letters, 263 selfloop transitions, 299 changer transitions 4/567 dead transitions. [2024-11-09 10:51:59,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 567 transitions, 12902 flow [2024-11-09 10:51:59,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 10:51:59,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-09 10:51:59,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 192 transitions. [2024-11-09 10:51:59,536 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-11-09 10:51:59,536 INFO L175 Difference]: Start difference. First operand has 369 places, 531 transitions, 11545 flow. Second operand 24 states and 192 transitions. [2024-11-09 10:51:59,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 567 transitions, 12902 flow [2024-11-09 10:51:59,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 567 transitions, 12538 flow, removed 18 selfloop flow, removed 14 redundant places. [2024-11-09 10:51:59,814 INFO L231 Difference]: Finished difference. Result has 378 places, 533 transitions, 11859 flow [2024-11-09 10:51:59,814 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=11183, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=297, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=11859, PETRI_PLACES=378, PETRI_TRANSITIONS=533} [2024-11-09 10:51:59,815 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 352 predicate places. [2024-11-09 10:51:59,815 INFO L471 AbstractCegarLoop]: Abstraction has has 378 places, 533 transitions, 11859 flow [2024-11-09 10:51:59,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 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) [2024-11-09 10:51:59,815 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:59,815 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:59,827 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-09 10:52:00,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 10:52:00,016 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:52:00,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:52:00,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1208750604, now seen corresponding path program 13 times [2024-11-09 10:52:00,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:52:00,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665092189] [2024-11-09 10:52:00,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:52:00,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:52:00,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:52:00,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:00,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:52:00,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665092189] [2024-11-09 10:52:00,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665092189] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:52:00,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472158128] [2024-11-09 10:52:00,157 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 10:52:00,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:52:00,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:52:00,158 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) [2024-11-09 10:52:00,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 10:52:00,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:52:00,192 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 10:52:00,192 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:52:00,320 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:00,320 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:52:00,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:00,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472158128] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:52:00,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:52:00,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-09 10:52:00,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242687634] [2024-11-09 10:52:00,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:52:00,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 10:52:00,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:52:00,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 10:52:00,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2024-11-09 10:52:00,498 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-09 10:52:00,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 533 transitions, 11859 flow. Second operand has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 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) [2024-11-09 10:52:00,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:52:00,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-09 10:52:00,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:52:01,602 INFO L124 PetriNetUnfolderBase]: 1199/2282 cut-off events. [2024-11-09 10:52:01,603 INFO L125 PetriNetUnfolderBase]: For 64354/64354 co-relation queries the response was YES. [2024-11-09 10:52:01,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22540 conditions, 2282 events. 1199/2282 cut-off events. For 64354/64354 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 13881 event pairs, 72 based on Foata normal form. 3/2285 useless extension candidates. Maximal degree in co-relation 22441. Up to 1229 conditions per place. [2024-11-09 10:52:01,626 INFO L140 encePairwiseOnDemand]: 12/24 looper letters, 238 selfloop transitions, 355 changer transitions 13/607 dead transitions. [2024-11-09 10:52:01,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 607 transitions, 13650 flow [2024-11-09 10:52:01,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-09 10:52:01,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2024-11-09 10:52:01,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 324 transitions. [2024-11-09 10:52:01,627 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34615384615384615 [2024-11-09 10:52:01,627 INFO L175 Difference]: Start difference. First operand has 378 places, 533 transitions, 11859 flow. Second operand 39 states and 324 transitions. [2024-11-09 10:52:01,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 607 transitions, 13650 flow [2024-11-09 10:52:01,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 607 transitions, 13438 flow, removed 3 selfloop flow, removed 19 redundant places. [2024-11-09 10:52:01,885 INFO L231 Difference]: Finished difference. Result has 400 places, 542 transitions, 13050 flow [2024-11-09 10:52:01,886 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=11624, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=342, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=13050, PETRI_PLACES=400, PETRI_TRANSITIONS=542} [2024-11-09 10:52:01,886 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 374 predicate places. [2024-11-09 10:52:01,886 INFO L471 AbstractCegarLoop]: Abstraction has has 400 places, 542 transitions, 13050 flow [2024-11-09 10:52:01,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 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) [2024-11-09 10:52:01,886 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:52:01,887 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:52:01,898 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-09 10:52:02,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:52:02,087 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:52:02,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:52:02,087 INFO L85 PathProgramCache]: Analyzing trace with hash 2029717016, now seen corresponding path program 1 times [2024-11-09 10:52:02,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:52:02,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468103229] [2024-11-09 10:52:02,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:52:02,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:52:02,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:52:02,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:02,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:52:02,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468103229] [2024-11-09 10:52:02,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468103229] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:52:02,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032623924] [2024-11-09 10:52:02,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:52:02,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:52:02,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:52:02,252 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) [2024-11-09 10:52:02,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 10:52:02,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:52:02,314 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 10:52:02,315 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:52:02,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:02,432 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:52:02,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:02,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032623924] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:52:02,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:52:02,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 28 [2024-11-09 10:52:02,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691703118] [2024-11-09 10:52:02,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:52:02,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-09 10:52:02,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:52:02,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-09 10:52:02,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=683, Unknown=0, NotChecked=0, Total=812 [2024-11-09 10:52:02,543 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-09 10:52:02,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 542 transitions, 13050 flow. Second operand has 29 states, 29 states have (on average 5.482758620689655) internal successors, (159), 29 states have internal predecessors, (159), 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) [2024-11-09 10:52:02,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:52:02,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-09 10:52:02,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:52:03,596 INFO L124 PetriNetUnfolderBase]: 1205/2287 cut-off events. [2024-11-09 10:52:03,597 INFO L125 PetriNetUnfolderBase]: For 80423/80423 co-relation queries the response was YES. [2024-11-09 10:52:03,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24305 conditions, 2287 events. 1205/2287 cut-off events. For 80423/80423 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 13873 event pairs, 76 based on Foata normal form. 2/2289 useless extension candidates. Maximal degree in co-relation 24199. Up to 807 conditions per place. [2024-11-09 10:52:03,625 INFO L140 encePairwiseOnDemand]: 12/24 looper letters, 267 selfloop transitions, 346 changer transitions 23/637 dead transitions. [2024-11-09 10:52:03,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 637 transitions, 15188 flow [2024-11-09 10:52:03,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-09 10:52:03,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-11-09 10:52:03,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 323 transitions. [2024-11-09 10:52:03,627 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-11-09 10:52:03,627 INFO L175 Difference]: Start difference. First operand has 400 places, 542 transitions, 13050 flow. Second operand 34 states and 323 transitions. [2024-11-09 10:52:03,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 637 transitions, 15188 flow [2024-11-09 10:52:03,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 637 transitions, 14875 flow, removed 62 selfloop flow, removed 26 redundant places. [2024-11-09 10:52:03,995 INFO L231 Difference]: Finished difference. Result has 409 places, 541 transitions, 13513 flow [2024-11-09 10:52:03,996 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=12769, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=342, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=13513, PETRI_PLACES=409, PETRI_TRANSITIONS=541} [2024-11-09 10:52:03,996 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 383 predicate places. [2024-11-09 10:52:03,996 INFO L471 AbstractCegarLoop]: Abstraction has has 409 places, 541 transitions, 13513 flow [2024-11-09 10:52:03,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.482758620689655) internal successors, (159), 29 states have internal predecessors, (159), 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) [2024-11-09 10:52:03,997 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:52:03,997 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:52:04,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-09 10:52:04,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:52:04,198 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:52:04,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:52:04,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1059230623, now seen corresponding path program 14 times [2024-11-09 10:52:04,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:52:04,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825586202] [2024-11-09 10:52:04,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:52:04,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:52:04,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:52:04,371 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:04,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:52:04,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825586202] [2024-11-09 10:52:04,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825586202] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:52:04,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570059093] [2024-11-09 10:52:04,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 10:52:04,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:52:04,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:52:04,374 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) [2024-11-09 10:52:04,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 10:52:04,416 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 10:52:04,417 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:52:04,418 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 10:52:04,419 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:52:04,619 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:04,619 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:52:04,812 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:04,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570059093] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:52:04,812 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:52:04,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2024-11-09 10:52:04,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074400465] [2024-11-09 10:52:04,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:52:04,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-09 10:52:04,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:52:04,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-09 10:52:04,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=796, Unknown=0, NotChecked=0, Total=930 [2024-11-09 10:52:04,816 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-09 10:52:04,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 541 transitions, 13513 flow. Second operand has 31 states, 31 states have (on average 5.645161290322581) internal successors, (175), 31 states have internal predecessors, (175), 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) [2024-11-09 10:52:04,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:52:04,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-09 10:52:04,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:52:10,174 INFO L124 PetriNetUnfolderBase]: 2740/5096 cut-off events. [2024-11-09 10:52:10,174 INFO L125 PetriNetUnfolderBase]: For 213271/213271 co-relation queries the response was YES. [2024-11-09 10:52:10,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57321 conditions, 5096 events. 2740/5096 cut-off events. For 213271/213271 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 35867 event pairs, 94 based on Foata normal form. 51/5147 useless extension candidates. Maximal degree in co-relation 57214. Up to 1404 conditions per place. [2024-11-09 10:52:10,233 INFO L140 encePairwiseOnDemand]: 12/24 looper letters, 499 selfloop transitions, 1010 changer transitions 25/1535 dead transitions. [2024-11-09 10:52:10,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 554 places, 1535 transitions, 37409 flow [2024-11-09 10:52:10,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2024-11-09 10:52:10,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2024-11-09 10:52:10,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 1384 transitions. [2024-11-09 10:52:10,236 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3696581196581197 [2024-11-09 10:52:10,236 INFO L175 Difference]: Start difference. First operand has 409 places, 541 transitions, 13513 flow. Second operand 156 states and 1384 transitions. [2024-11-09 10:52:10,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 554 places, 1535 transitions, 37409 flow [2024-11-09 10:52:11,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 526 places, 1535 transitions, 35799 flow, removed 127 selfloop flow, removed 28 redundant places. [2024-11-09 10:52:11,287 INFO L231 Difference]: Finished difference. Result has 588 places, 1189 transitions, 32979 flow [2024-11-09 10:52:11,287 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=12823, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=423, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=156, PETRI_FLOW=32979, PETRI_PLACES=588, PETRI_TRANSITIONS=1189} [2024-11-09 10:52:11,287 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 562 predicate places. [2024-11-09 10:52:11,287 INFO L471 AbstractCegarLoop]: Abstraction has has 588 places, 1189 transitions, 32979 flow [2024-11-09 10:52:11,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.645161290322581) internal successors, (175), 31 states have internal predecessors, (175), 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) [2024-11-09 10:52:11,288 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:52:11,288 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:52:11,300 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-09 10:52:11,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:52:11,488 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:52:11,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:52:11,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1191502663, now seen corresponding path program 15 times [2024-11-09 10:52:11,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:52:11,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048451088] [2024-11-09 10:52:11,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:52:11,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:52:11,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:52:11,642 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:11,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:52:11,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048451088] [2024-11-09 10:52:11,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048451088] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:52:11,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633641923] [2024-11-09 10:52:11,643 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 10:52:11,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:52:11,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:52:11,644 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) [2024-11-09 10:52:11,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-09 10:52:11,679 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 10:52:11,679 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:52:11,679 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 10:52:11,680 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:52:11,863 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:11,863 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:52:12,039 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:12,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633641923] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:52:12,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:52:12,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2024-11-09 10:52:12,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061168690] [2024-11-09 10:52:12,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:52:12,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-09 10:52:12,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:52:12,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-09 10:52:12,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=793, Unknown=0, NotChecked=0, Total=930 [2024-11-09 10:52:12,046 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-09 10:52:12,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 588 places, 1189 transitions, 32979 flow. Second operand has 31 states, 31 states have (on average 5.67741935483871) internal successors, (176), 31 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:52:12,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:52:12,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-09 10:52:12,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:52:17,960 INFO L124 PetriNetUnfolderBase]: 4047/7330 cut-off events. [2024-11-09 10:52:17,960 INFO L125 PetriNetUnfolderBase]: For 718085/718085 co-relation queries the response was YES. [2024-11-09 10:52:18,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101751 conditions, 7330 events. 4047/7330 cut-off events. For 718085/718085 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 51807 event pairs, 103 based on Foata normal form. 16/7346 useless extension candidates. Maximal degree in co-relation 101589. Up to 2233 conditions per place. [2024-11-09 10:52:18,062 INFO L140 encePairwiseOnDemand]: 11/24 looper letters, 577 selfloop transitions, 1417 changer transitions 27/2022 dead transitions. [2024-11-09 10:52:18,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 706 places, 2022 transitions, 57429 flow [2024-11-09 10:52:18,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2024-11-09 10:52:18,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2024-11-09 10:52:18,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 1169 transitions. [2024-11-09 10:52:18,064 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38657407407407407 [2024-11-09 10:52:18,064 INFO L175 Difference]: Start difference. First operand has 588 places, 1189 transitions, 32979 flow. Second operand 126 states and 1169 transitions. [2024-11-09 10:52:18,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 706 places, 2022 transitions, 57429 flow [2024-11-09 10:52:22,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 681 places, 2022 transitions, 55231 flow, removed 967 selfloop flow, removed 25 redundant places. [2024-11-09 10:52:22,630 INFO L231 Difference]: Finished difference. Result has 702 places, 1675 transitions, 48822 flow [2024-11-09 10:52:22,631 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=31036, PETRI_DIFFERENCE_MINUEND_PLACES=556, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=963, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=126, PETRI_FLOW=48822, PETRI_PLACES=702, PETRI_TRANSITIONS=1675} [2024-11-09 10:52:22,631 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 676 predicate places. [2024-11-09 10:52:22,631 INFO L471 AbstractCegarLoop]: Abstraction has has 702 places, 1675 transitions, 48822 flow [2024-11-09 10:52:22,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.67741935483871) internal successors, (176), 31 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:52:22,632 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:52:22,632 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:52:22,644 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-09 10:52:22,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-09 10:52:22,833 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:52:22,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:52:22,833 INFO L85 PathProgramCache]: Analyzing trace with hash 2133057283, now seen corresponding path program 16 times [2024-11-09 10:52:22,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:52:22,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957732620] [2024-11-09 10:52:22,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:52:22,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:52:22,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:52:22,948 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:22,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:52:22,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957732620] [2024-11-09 10:52:22,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957732620] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:52:22,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850657764] [2024-11-09 10:52:22,949 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 10:52:22,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:52:22,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:52:22,950 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) [2024-11-09 10:52:22,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-09 10:52:22,983 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 10:52:22,983 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:52:22,983 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 10:52:22,984 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:52:23,160 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:23,160 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:52:23,326 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:23,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850657764] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:52:23,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:52:23,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2024-11-09 10:52:23,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743389504] [2024-11-09 10:52:23,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:52:23,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-09 10:52:23,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:52:23,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-09 10:52:23,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=782, Unknown=0, NotChecked=0, Total=930 [2024-11-09 10:52:23,332 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-09 10:52:23,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 702 places, 1675 transitions, 48822 flow. Second operand has 31 states, 31 states have (on average 5.645161290322581) internal successors, (175), 31 states have internal predecessors, (175), 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) [2024-11-09 10:52:23,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:52:23,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-09 10:52:23,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:52:27,737 INFO L124 PetriNetUnfolderBase]: 4313/7735 cut-off events. [2024-11-09 10:52:27,737 INFO L125 PetriNetUnfolderBase]: For 811533/811533 co-relation queries the response was YES. [2024-11-09 10:52:27,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112977 conditions, 7735 events. 4313/7735 cut-off events. For 811533/811533 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 54687 event pairs, 201 based on Foata normal form. 3/7738 useless extension candidates. Maximal degree in co-relation 112800. Up to 4525 conditions per place. [2024-11-09 10:52:27,880 INFO L140 encePairwiseOnDemand]: 12/24 looper letters, 767 selfloop transitions, 1133 changer transitions 12/1913 dead transitions. [2024-11-09 10:52:27,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 742 places, 1913 transitions, 58635 flow [2024-11-09 10:52:27,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-09 10:52:27,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2024-11-09 10:52:27,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 451 transitions. [2024-11-09 10:52:27,882 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35455974842767296 [2024-11-09 10:52:27,882 INFO L175 Difference]: Start difference. First operand has 702 places, 1675 transitions, 48822 flow. Second operand 53 states and 451 transitions. [2024-11-09 10:52:27,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 742 places, 1913 transitions, 58635 flow [2024-11-09 10:52:32,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 691 places, 1913 transitions, 57560 flow, removed 273 selfloop flow, removed 51 redundant places. [2024-11-09 10:52:32,786 INFO L231 Difference]: Finished difference. Result has 702 places, 1802 transitions, 55120 flow [2024-11-09 10:52:32,787 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=47864, PETRI_DIFFERENCE_MINUEND_PLACES=639, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1675, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1008, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=635, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=55120, PETRI_PLACES=702, PETRI_TRANSITIONS=1802} [2024-11-09 10:52:32,788 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 676 predicate places. [2024-11-09 10:52:32,788 INFO L471 AbstractCegarLoop]: Abstraction has has 702 places, 1802 transitions, 55120 flow [2024-11-09 10:52:32,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.645161290322581) internal successors, (175), 31 states have internal predecessors, (175), 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) [2024-11-09 10:52:32,788 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:52:32,788 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:52:32,800 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-09 10:52:32,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:52:32,989 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:52:32,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:52:32,989 INFO L85 PathProgramCache]: Analyzing trace with hash 160134215, now seen corresponding path program 17 times [2024-11-09 10:52:32,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:52:32,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940760602] [2024-11-09 10:52:32,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:52:32,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:52:32,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:52:33,108 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:33,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:52:33,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940760602] [2024-11-09 10:52:33,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940760602] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:52:33,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993454885] [2024-11-09 10:52:33,109 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 10:52:33,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:52:33,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:52:33,111 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) [2024-11-09 10:52:33,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-09 10:52:33,146 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-09 10:52:33,146 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:52:33,147 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 10:52:33,147 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:52:33,326 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:33,326 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:52:33,475 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:33,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993454885] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:52:33,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:52:33,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2024-11-09 10:52:33,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267591584] [2024-11-09 10:52:33,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:52:33,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-09 10:52:33,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:52:33,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-09 10:52:33,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=783, Unknown=0, NotChecked=0, Total=930 [2024-11-09 10:52:33,482 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-09 10:52:33,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 702 places, 1802 transitions, 55120 flow. Second operand has 31 states, 31 states have (on average 5.645161290322581) internal successors, (175), 31 states have internal predecessors, (175), 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) [2024-11-09 10:52:33,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:52:33,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-09 10:52:33,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:52:38,573 INFO L124 PetriNetUnfolderBase]: 4364/7836 cut-off events. [2024-11-09 10:52:38,574 INFO L125 PetriNetUnfolderBase]: For 799174/799174 co-relation queries the response was YES. [2024-11-09 10:52:38,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116599 conditions, 7836 events. 4364/7836 cut-off events. For 799174/799174 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 55601 event pairs, 205 based on Foata normal form. 3/7839 useless extension candidates. Maximal degree in co-relation 116421. Up to 4609 conditions per place. [2024-11-09 10:52:38,727 INFO L140 encePairwiseOnDemand]: 12/24 looper letters, 738 selfloop transitions, 1197 changer transitions 12/1948 dead transitions. [2024-11-09 10:52:38,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 758 places, 1948 transitions, 61854 flow [2024-11-09 10:52:38,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-09 10:52:38,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2024-11-09 10:52:38,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 506 transitions. [2024-11-09 10:52:38,729 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35138888888888886 [2024-11-09 10:52:38,729 INFO L175 Difference]: Start difference. First operand has 702 places, 1802 transitions, 55120 flow. Second operand 60 states and 506 transitions. [2024-11-09 10:52:38,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 758 places, 1948 transitions, 61854 flow [2024-11-09 10:52:43,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 741 places, 1948 transitions, 61447 flow, removed 18 selfloop flow, removed 17 redundant places. [2024-11-09 10:52:43,246 INFO L231 Difference]: Finished difference. Result has 750 places, 1828 transitions, 59561 flow [2024-11-09 10:52:43,248 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=54729, PETRI_DIFFERENCE_MINUEND_PLACES=682, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1802, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=626, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=59561, PETRI_PLACES=750, PETRI_TRANSITIONS=1828} [2024-11-09 10:52:43,249 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 724 predicate places. [2024-11-09 10:52:43,249 INFO L471 AbstractCegarLoop]: Abstraction has has 750 places, 1828 transitions, 59561 flow [2024-11-09 10:52:43,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.645161290322581) internal successors, (175), 31 states have internal predecessors, (175), 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) [2024-11-09 10:52:43,249 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:52:43,249 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:52:43,262 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-09 10:52:43,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:52:43,450 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:52:43,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:52:43,450 INFO L85 PathProgramCache]: Analyzing trace with hash 860627203, now seen corresponding path program 18 times [2024-11-09 10:52:43,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:52:43,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844454974] [2024-11-09 10:52:43,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:52:43,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:52:43,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:52:43,608 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:43,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:52:43,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844454974] [2024-11-09 10:52:43,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844454974] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:52:43,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922069376] [2024-11-09 10:52:43,609 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 10:52:43,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:52:43,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:52:43,611 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) [2024-11-09 10:52:43,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-09 10:52:43,651 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-09 10:52:43,651 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:52:43,652 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 10:52:43,653 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:52:43,835 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:43,835 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:52:44,046 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:44,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922069376] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:52:44,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:52:44,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2024-11-09 10:52:44,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579644123] [2024-11-09 10:52:44,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:52:44,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-09 10:52:44,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:52:44,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-09 10:52:44,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=796, Unknown=0, NotChecked=0, Total=930 [2024-11-09 10:52:44,057 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-09 10:52:44,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 750 places, 1828 transitions, 59561 flow. Second operand has 31 states, 31 states have (on average 5.645161290322581) internal successors, (175), 31 states have internal predecessors, (175), 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) [2024-11-09 10:52:44,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:52:44,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-09 10:52:44,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:52:52,850 INFO L124 PetriNetUnfolderBase]: 6505/11605 cut-off events. [2024-11-09 10:52:52,850 INFO L125 PetriNetUnfolderBase]: For 1302718/1302718 co-relation queries the response was YES. [2024-11-09 10:52:52,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182050 conditions, 11605 events. 6505/11605 cut-off events. For 1302718/1302718 co-relation queries the response was YES. Maximal size of possible extension queue 824. Compared 88774 event pairs, 204 based on Foata normal form. 9/11614 useless extension candidates. Maximal degree in co-relation 181867. Up to 4158 conditions per place. [2024-11-09 10:52:53,095 INFO L140 encePairwiseOnDemand]: 12/24 looper letters, 942 selfloop transitions, 2090 changer transitions 26/3059 dead transitions. [2024-11-09 10:52:53,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 872 places, 3059 transitions, 103299 flow [2024-11-09 10:52:53,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2024-11-09 10:52:53,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2024-11-09 10:52:53,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 1059 transitions. [2024-11-09 10:52:53,098 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3501984126984127 [2024-11-09 10:52:53,098 INFO L175 Difference]: Start difference. First operand has 750 places, 1828 transitions, 59561 flow. Second operand 126 states and 1059 transitions. [2024-11-09 10:52:53,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 872 places, 3059 transitions, 103299 flow [2024-11-09 10:53:02,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 845 places, 3059 transitions, 102524 flow, removed 122 selfloop flow, removed 27 redundant places. [2024-11-09 10:53:02,169 INFO L231 Difference]: Finished difference. Result has 900 places, 2787 transitions, 100409 flow [2024-11-09 10:53:02,170 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=59056, PETRI_DIFFERENCE_MINUEND_PLACES=720, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1828, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=126, PETRI_FLOW=100409, PETRI_PLACES=900, PETRI_TRANSITIONS=2787} [2024-11-09 10:53:02,171 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 874 predicate places. [2024-11-09 10:53:02,171 INFO L471 AbstractCegarLoop]: Abstraction has has 900 places, 2787 transitions, 100409 flow [2024-11-09 10:53:02,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.645161290322581) internal successors, (175), 31 states have internal predecessors, (175), 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) [2024-11-09 10:53:02,171 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:53:02,171 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:53:02,184 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-09 10:53:02,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:53:02,375 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:53:02,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:53:02,376 INFO L85 PathProgramCache]: Analyzing trace with hash 277486274, now seen corresponding path program 2 times [2024-11-09 10:53:02,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:53:02,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362733654] [2024-11-09 10:53:02,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:53:02,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:53:02,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:53:02,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:53:02,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:53:02,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362733654] [2024-11-09 10:53:02,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362733654] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:53:02,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507356135] [2024-11-09 10:53:02,508 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 10:53:02,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:53:02,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:53:02,510 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) [2024-11-09 10:53:02,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-09 10:53:02,552 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 10:53:02,553 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:53:02,553 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 10:53:02,554 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:53:02,669 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:53:02,669 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:53:02,784 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:53:02,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507356135] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:53:02,785 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:53:02,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 29 [2024-11-09 10:53:02,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554891826] [2024-11-09 10:53:02,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:53:02,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-09 10:53:02,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:53:02,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-09 10:53:02,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=734, Unknown=0, NotChecked=0, Total=870 [2024-11-09 10:53:02,790 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-09 10:53:02,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 900 places, 2787 transitions, 100409 flow. Second operand has 30 states, 30 states have (on average 5.333333333333333) internal successors, (160), 30 states have internal predecessors, (160), 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) [2024-11-09 10:53:02,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:53:02,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-09 10:53:02,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand