./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/popl20-figure3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3061b6dc 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-figure3.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 0d53ec9655ee282673b712b4a154821b0baa87dd23720a53d10f4e3f8ec015d6 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 09:50:03,043 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 09:50:03,096 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-19 09:50:03,101 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 09:50:03,102 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 09:50:03,136 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 09:50:03,138 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 09:50:03,138 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 09:50:03,139 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 09:50:03,140 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 09:50:03,140 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 09:50:03,140 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 09:50:03,141 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 09:50:03,143 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 09:50:03,143 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 09:50:03,144 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 09:50:03,144 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 09:50:03,144 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 09:50:03,144 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 09:50:03,145 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 09:50:03,145 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-19 09:50:03,145 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-19 09:50:03,149 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-19 09:50:03,149 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 09:50:03,149 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-19 09:50:03,150 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 09:50:03,150 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 09:50:03,150 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 09:50:03,150 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 09:50:03,151 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 09:50:03,151 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 09:50:03,151 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 09:50:03,151 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 09:50:03,151 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:50:03,152 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 09:50:03,152 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 09:50:03,152 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 09:50:03,152 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 09:50:03,152 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 09:50:03,152 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 09:50:03,153 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 09:50:03,153 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 09:50:03,154 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d53ec9655ee282673b712b4a154821b0baa87dd23720a53d10f4e3f8ec015d6 [2024-11-19 09:50:03,447 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 09:50:03,479 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 09:50:03,482 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 09:50:03,483 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 09:50:03,484 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 09:50:03,485 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-figure3.wvr.c [2024-11-19 09:50:04,974 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 09:50:05,168 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 09:50:05,169 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure3.wvr.c [2024-11-19 09:50:05,176 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebf22786d/00f857594b4f47fc95786d4a1a5c7810/FLAG8c76da900 [2024-11-19 09:50:05,192 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebf22786d/00f857594b4f47fc95786d4a1a5c7810 [2024-11-19 09:50:05,195 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 09:50:05,197 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 09:50:05,198 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 09:50:05,198 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 09:50:05,203 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 09:50:05,204 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:50:05" (1/1) ... [2024-11-19 09:50:05,205 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55857f8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:50:05, skipping insertion in model container [2024-11-19 09:50:05,205 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:50:05" (1/1) ... [2024-11-19 09:50:05,226 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 09:50:05,457 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:50:05,468 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 09:50:05,492 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:50:05,520 INFO L204 MainTranslator]: Completed translation [2024-11-19 09:50:05,521 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:50:05 WrapperNode [2024-11-19 09:50:05,521 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 09:50:05,522 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 09:50:05,523 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 09:50:05,523 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 09:50:05,530 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:50:05" (1/1) ... [2024-11-19 09:50:05,537 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:50:05" (1/1) ... [2024-11-19 09:50:05,562 INFO L138 Inliner]: procedures = 18, calls = 12, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 64 [2024-11-19 09:50:05,564 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 09:50:05,565 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 09:50:05,565 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 09:50:05,565 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 09:50:05,576 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:50:05" (1/1) ... [2024-11-19 09:50:05,577 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:50:05" (1/1) ... [2024-11-19 09:50:05,578 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:50:05" (1/1) ... [2024-11-19 09:50:05,601 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]. [2024-11-19 09:50:05,601 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:50:05" (1/1) ... [2024-11-19 09:50:05,601 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:50:05" (1/1) ... [2024-11-19 09:50:05,606 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:50:05" (1/1) ... [2024-11-19 09:50:05,610 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:50:05" (1/1) ... [2024-11-19 09:50:05,617 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:50:05" (1/1) ... [2024-11-19 09:50:05,618 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:50:05" (1/1) ... [2024-11-19 09:50:05,620 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 09:50:05,624 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 09:50:05,624 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 09:50:05,624 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 09:50:05,625 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:50:05" (1/1) ... [2024-11-19 09:50:05,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:50:05,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:50:05,665 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) [2024-11-19 09:50:05,668 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 [2024-11-19 09:50:05,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 09:50:05,717 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 09:50:05,717 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 09:50:05,718 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 09:50:05,718 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 09:50:05,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 09:50:05,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 09:50:05,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 09:50:05,720 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 09:50:05,841 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 09:50:05,843 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 09:50:05,988 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 09:50:05,989 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 09:50:06,118 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 09:50:06,118 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-19 09:50:06,119 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:50:06 BoogieIcfgContainer [2024-11-19 09:50:06,119 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 09:50:06,121 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 09:50:06,121 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 09:50:06,124 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 09:50:06,125 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 09:50:05" (1/3) ... [2024-11-19 09:50:06,126 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24934313 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:50:06, skipping insertion in model container [2024-11-19 09:50:06,126 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:50:05" (2/3) ... [2024-11-19 09:50:06,127 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24934313 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:50:06, skipping insertion in model container [2024-11-19 09:50:06,127 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:50:06" (3/3) ... [2024-11-19 09:50:06,128 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-figure3.wvr.c [2024-11-19 09:50:06,145 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 09:50:06,145 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-19 09:50:06,146 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 09:50:06,199 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-19 09:50:06,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 24 transitions, 62 flow [2024-11-19 09:50:06,261 INFO L124 PetriNetUnfolderBase]: 2/22 cut-off events. [2024-11-19 09:50:06,262 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 09:50:06,265 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 4. Compared 24 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. [2024-11-19 09:50:06,265 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 24 transitions, 62 flow [2024-11-19 09:50:06,268 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 21 transitions, 54 flow [2024-11-19 09:50:06,277 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:50:06,284 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;@286405a5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:50:06,285 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-19 09:50:06,293 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:50:06,293 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2024-11-19 09:50:06,294 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 09:50:06,294 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:50:06,295 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:50:06,295 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)] === [2024-11-19 09:50:06,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:50:06,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1762227889, now seen corresponding path program 1 times [2024-11-19 09:50:06,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:50:06,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939454095] [2024-11-19 09:50:06,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:50:06,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:50:06,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:50:06,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:06,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:50:06,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939454095] [2024-11-19 09:50:06,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939454095] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:50:06,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:50:06,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:50:06,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636511788] [2024-11-19 09:50:06,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:50:06,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:50:06,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:50:06,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:50:06,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:50:06,744 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-19 09:50:06,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 21 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:06,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:50:06,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-19 09:50:06,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:50:06,860 INFO L124 PetriNetUnfolderBase]: 86/168 cut-off events. [2024-11-19 09:50:06,860 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-11-19 09:50:06,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354 conditions, 168 events. 86/168 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 500 event pairs, 32 based on Foata normal form. 2/162 useless extension candidates. Maximal degree in co-relation 297. Up to 108 conditions per place. [2024-11-19 09:50:06,865 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 21 selfloop transitions, 2 changer transitions 3/28 dead transitions. [2024-11-19 09:50:06,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 28 transitions, 129 flow [2024-11-19 09:50:06,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:50:06,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:50:06,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2024-11-19 09:50:06,883 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-11-19 09:50:06,885 INFO L175 Difference]: Start difference. First operand has 26 places, 21 transitions, 54 flow. Second operand 3 states and 44 transitions. [2024-11-19 09:50:06,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 28 transitions, 129 flow [2024-11-19 09:50:06,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 28 transitions, 115 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 09:50:06,891 INFO L231 Difference]: Finished difference. Result has 23 places, 20 transitions, 56 flow [2024-11-19 09:50:06,893 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=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=23, PETRI_TRANSITIONS=20} [2024-11-19 09:50:06,896 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, -3 predicate places. [2024-11-19 09:50:06,896 INFO L471 AbstractCegarLoop]: Abstraction has has 23 places, 20 transitions, 56 flow [2024-11-19 09:50:06,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:06,897 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:50:06,897 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:50:06,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 09:50:06,897 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)] === [2024-11-19 09:50:06,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:50:06,898 INFO L85 PathProgramCache]: Analyzing trace with hash -866629274, now seen corresponding path program 1 times [2024-11-19 09:50:06,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:50:06,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279376717] [2024-11-19 09:50:06,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:50:06,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:50:06,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:50:07,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:07,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:50:07,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279376717] [2024-11-19 09:50:07,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279376717] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:50:07,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:50:07,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 09:50:07,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003634408] [2024-11-19 09:50:07,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:50:07,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 09:50:07,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:50:07,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 09:50:07,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 09:50:07,165 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-11-19 09:50:07,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 20 transitions, 56 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:07,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:50:07,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-11-19 09:50:07,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:50:07,322 INFO L124 PetriNetUnfolderBase]: 107/215 cut-off events. [2024-11-19 09:50:07,322 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-19 09:50:07,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 460 conditions, 215 events. 107/215 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 819 event pairs, 45 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 168. Up to 139 conditions per place. [2024-11-19 09:50:07,326 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 26 selfloop transitions, 7 changer transitions 3/40 dead transitions. [2024-11-19 09:50:07,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 40 transitions, 173 flow [2024-11-19 09:50:07,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 09:50:07,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 09:50:07,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 67 transitions. [2024-11-19 09:50:07,330 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5583333333333333 [2024-11-19 09:50:07,330 INFO L175 Difference]: Start difference. First operand has 23 places, 20 transitions, 56 flow. Second operand 5 states and 67 transitions. [2024-11-19 09:50:07,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 40 transitions, 173 flow [2024-11-19 09:50:07,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 40 transitions, 171 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:50:07,332 INFO L231 Difference]: Finished difference. Result has 29 places, 26 transitions, 106 flow [2024-11-19 09:50:07,332 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=106, PETRI_PLACES=29, PETRI_TRANSITIONS=26} [2024-11-19 09:50:07,334 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2024-11-19 09:50:07,335 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 26 transitions, 106 flow [2024-11-19 09:50:07,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:07,335 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:50:07,335 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:50:07,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 09:50:07,336 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)] === [2024-11-19 09:50:07,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:50:07,339 INFO L85 PathProgramCache]: Analyzing trace with hash -929821614, now seen corresponding path program 2 times [2024-11-19 09:50:07,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:50:07,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239181129] [2024-11-19 09:50:07,339 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:50:07,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:50:07,384 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:50:07,384 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:07,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:07,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:50:07,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239181129] [2024-11-19 09:50:07,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239181129] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:50:07,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564859149] [2024-11-19 09:50:07,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:50:07,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:50:07,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:50:07,693 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) [2024-11-19 09:50:07,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 09:50:07,766 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:50:07,766 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:07,770 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 09:50:07,778 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:50:07,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:07,852 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 09:50:07,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564859149] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:50:07,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 09:50:07,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2024-11-19 09:50:07,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934485134] [2024-11-19 09:50:07,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:50:07,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 09:50:07,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:50:07,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 09:50:07,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-19 09:50:07,858 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-11-19 09:50:07,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 106 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:07,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:50:07,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-11-19 09:50:07,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:50:08,019 INFO L124 PetriNetUnfolderBase]: 120/247 cut-off events. [2024-11-19 09:50:08,020 INFO L125 PetriNetUnfolderBase]: For 146/146 co-relation queries the response was YES. [2024-11-19 09:50:08,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 710 conditions, 247 events. 120/247 cut-off events. For 146/146 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1019 event pairs, 4 based on Foata normal form. 9/254 useless extension candidates. Maximal degree in co-relation 303. Up to 100 conditions per place. [2024-11-19 09:50:08,025 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 40 selfloop transitions, 10 changer transitions 1/55 dead transitions. [2024-11-19 09:50:08,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 55 transitions, 315 flow [2024-11-19 09:50:08,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 09:50:08,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 09:50:08,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 90 transitions. [2024-11-19 09:50:08,029 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-11-19 09:50:08,029 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 106 flow. Second operand 7 states and 90 transitions. [2024-11-19 09:50:08,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 55 transitions, 315 flow [2024-11-19 09:50:08,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 55 transitions, 313 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-19 09:50:08,035 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 186 flow [2024-11-19 09:50:08,035 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=186, PETRI_PLACES=40, PETRI_TRANSITIONS=32} [2024-11-19 09:50:08,036 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 14 predicate places. [2024-11-19 09:50:08,036 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 186 flow [2024-11-19 09:50:08,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:08,037 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:50:08,037 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:50:08,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-19 09:50:08,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:50:08,242 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)] === [2024-11-19 09:50:08,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:50:08,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1502350898, now seen corresponding path program 3 times [2024-11-19 09:50:08,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:50:08,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864961137] [2024-11-19 09:50:08,243 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:50:08,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:50:08,264 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 09:50:08,264 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:08,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:08,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:50:08,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864961137] [2024-11-19 09:50:08,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864961137] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:50:08,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:50:08,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 09:50:08,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259817468] [2024-11-19 09:50:08,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:50:08,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:50:08,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:50:08,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:50:08,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:50:08,340 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-11-19 09:50:08,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 186 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:08,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:50:08,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-11-19 09:50:08,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:50:08,431 INFO L124 PetriNetUnfolderBase]: 160/326 cut-off events. [2024-11-19 09:50:08,432 INFO L125 PetriNetUnfolderBase]: For 640/646 co-relation queries the response was YES. [2024-11-19 09:50:08,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1112 conditions, 326 events. 160/326 cut-off events. For 640/646 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1302 event pairs, 55 based on Foata normal form. 6/329 useless extension candidates. Maximal degree in co-relation 716. Up to 139 conditions per place. [2024-11-19 09:50:08,435 INFO L140 encePairwiseOnDemand]: 20/24 looper letters, 36 selfloop transitions, 10 changer transitions 1/51 dead transitions. [2024-11-19 09:50:08,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 51 transitions, 383 flow [2024-11-19 09:50:08,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:50:08,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:50:08,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 57 transitions. [2024-11-19 09:50:08,437 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.59375 [2024-11-19 09:50:08,437 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 186 flow. Second operand 4 states and 57 transitions. [2024-11-19 09:50:08,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 51 transitions, 383 flow [2024-11-19 09:50:08,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 51 transitions, 380 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:50:08,441 INFO L231 Difference]: Finished difference. Result has 44 places, 34 transitions, 237 flow [2024-11-19 09:50:08,442 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=237, PETRI_PLACES=44, PETRI_TRANSITIONS=34} [2024-11-19 09:50:08,442 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 18 predicate places. [2024-11-19 09:50:08,443 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 34 transitions, 237 flow [2024-11-19 09:50:08,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:08,443 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:50:08,443 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:50:08,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 09:50:08,444 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)] === [2024-11-19 09:50:08,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:50:08,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1419935380, now seen corresponding path program 4 times [2024-11-19 09:50:08,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:50:08,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793817795] [2024-11-19 09:50:08,445 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:50:08,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:50:08,454 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:50:08,454 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:08,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:08,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:50:08,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793817795] [2024-11-19 09:50:08,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793817795] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:50:08,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057866283] [2024-11-19 09:50:08,564 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:50:08,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:50:08,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:50:08,567 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) [2024-11-19 09:50:08,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 09:50:08,621 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:50:08,622 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:08,623 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 09:50:08,624 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:50:08,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:08,721 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:50:08,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:08,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057866283] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:50:08,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:50:08,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 9 [2024-11-19 09:50:08,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194765334] [2024-11-19 09:50:08,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:50:08,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 09:50:08,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:50:08,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 09:50:08,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-19 09:50:08,852 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-11-19 09:50:08,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 237 flow. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:08,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:50:08,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-11-19 09:50:08,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:50:09,220 INFO L124 PetriNetUnfolderBase]: 278/549 cut-off events. [2024-11-19 09:50:09,221 INFO L125 PetriNetUnfolderBase]: For 1525/1529 co-relation queries the response was YES. [2024-11-19 09:50:09,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2031 conditions, 549 events. 278/549 cut-off events. For 1525/1529 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2623 event pairs, 33 based on Foata normal form. 17/564 useless extension candidates. Maximal degree in co-relation 1348. Up to 175 conditions per place. [2024-11-19 09:50:09,226 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 48 selfloop transitions, 41 changer transitions 2/95 dead transitions. [2024-11-19 09:50:09,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 95 transitions, 767 flow [2024-11-19 09:50:09,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 09:50:09,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-19 09:50:09,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 161 transitions. [2024-11-19 09:50:09,229 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5160256410256411 [2024-11-19 09:50:09,229 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 237 flow. Second operand 13 states and 161 transitions. [2024-11-19 09:50:09,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 95 transitions, 767 flow [2024-11-19 09:50:09,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 95 transitions, 744 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-11-19 09:50:09,242 INFO L231 Difference]: Finished difference. Result has 62 places, 64 transitions, 594 flow [2024-11-19 09:50:09,243 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=594, PETRI_PLACES=62, PETRI_TRANSITIONS=64} [2024-11-19 09:50:09,245 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 36 predicate places. [2024-11-19 09:50:09,245 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 64 transitions, 594 flow [2024-11-19 09:50:09,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:09,245 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:50:09,245 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:50:09,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-19 09:50:09,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:50:09,450 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)] === [2024-11-19 09:50:09,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:50:09,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1171661772, now seen corresponding path program 5 times [2024-11-19 09:50:09,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:50:09,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768994542] [2024-11-19 09:50:09,451 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:50:09,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:50:09,461 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:50:09,462 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:09,514 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:09,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:50:09,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768994542] [2024-11-19 09:50:09,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768994542] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:50:09,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:50:09,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 09:50:09,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643434933] [2024-11-19 09:50:09,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:50:09,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:50:09,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:50:09,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:50:09,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:50:09,520 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-11-19 09:50:09,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 64 transitions, 594 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:09,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:50:09,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-11-19 09:50:09,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:50:09,633 INFO L124 PetriNetUnfolderBase]: 270/528 cut-off events. [2024-11-19 09:50:09,634 INFO L125 PetriNetUnfolderBase]: For 3368/3380 co-relation queries the response was YES. [2024-11-19 09:50:09,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2493 conditions, 528 events. 270/528 cut-off events. For 3368/3380 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2431 event pairs, 65 based on Foata normal form. 13/538 useless extension candidates. Maximal degree in co-relation 2065. Up to 227 conditions per place. [2024-11-19 09:50:09,640 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 52 selfloop transitions, 24 changer transitions 1/81 dead transitions. [2024-11-19 09:50:09,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 81 transitions, 881 flow [2024-11-19 09:50:09,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:50:09,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:50:09,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 56 transitions. [2024-11-19 09:50:09,641 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-19 09:50:09,642 INFO L175 Difference]: Start difference. First operand has 62 places, 64 transitions, 594 flow. Second operand 4 states and 56 transitions. [2024-11-19 09:50:09,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 81 transitions, 881 flow [2024-11-19 09:50:09,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 81 transitions, 705 flow, removed 70 selfloop flow, removed 5 redundant places. [2024-11-19 09:50:09,651 INFO L231 Difference]: Finished difference. Result has 60 places, 66 transitions, 528 flow [2024-11-19 09:50:09,652 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=528, PETRI_PLACES=60, PETRI_TRANSITIONS=66} [2024-11-19 09:50:09,652 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 34 predicate places. [2024-11-19 09:50:09,653 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 66 transitions, 528 flow [2024-11-19 09:50:09,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:09,653 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:50:09,653 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:50:09,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 09:50:09,654 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)] === [2024-11-19 09:50:09,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:50:09,654 INFO L85 PathProgramCache]: Analyzing trace with hash -700848328, now seen corresponding path program 1 times [2024-11-19 09:50:09,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:50:09,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037532132] [2024-11-19 09:50:09,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:50:09,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:50:09,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:50:09,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:09,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:50:09,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037532132] [2024-11-19 09:50:09,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037532132] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:50:09,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556591722] [2024-11-19 09:50:09,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:50:09,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:50:09,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:50:09,771 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) [2024-11-19 09:50:09,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 09:50:09,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:50:09,827 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 09:50:09,828 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:50:09,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:50:09,859 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:50:09,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:50:09,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556591722] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:50:09,923 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:50:09,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 6 [2024-11-19 09:50:09,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025259131] [2024-11-19 09:50:09,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:50:09,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 09:50:09,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:50:09,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 09:50:09,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-19 09:50:09,935 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-19 09:50:09,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 66 transitions, 528 flow. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:09,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:50:09,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-19 09:50:09,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:50:10,137 INFO L124 PetriNetUnfolderBase]: 568/1037 cut-off events. [2024-11-19 09:50:10,138 INFO L125 PetriNetUnfolderBase]: For 3984/3989 co-relation queries the response was YES. [2024-11-19 09:50:10,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4154 conditions, 1037 events. 568/1037 cut-off events. For 3984/3989 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5075 event pairs, 91 based on Foata normal form. 12/1048 useless extension candidates. Maximal degree in co-relation 3441. Up to 487 conditions per place. [2024-11-19 09:50:10,149 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 97 selfloop transitions, 5 changer transitions 16/126 dead transitions. [2024-11-19 09:50:10,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 126 transitions, 1215 flow [2024-11-19 09:50:10,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:50:10,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:50:10,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 64 transitions. [2024-11-19 09:50:10,152 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-19 09:50:10,154 INFO L175 Difference]: Start difference. First operand has 60 places, 66 transitions, 528 flow. Second operand 4 states and 64 transitions. [2024-11-19 09:50:10,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 126 transitions, 1215 flow [2024-11-19 09:50:10,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 126 transitions, 1121 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-19 09:50:10,166 INFO L231 Difference]: Finished difference. Result has 59 places, 65 transitions, 501 flow [2024-11-19 09:50:10,166 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=501, PETRI_PLACES=59, PETRI_TRANSITIONS=65} [2024-11-19 09:50:10,167 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 33 predicate places. [2024-11-19 09:50:10,168 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 65 transitions, 501 flow [2024-11-19 09:50:10,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:10,168 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:50:10,168 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:50:10,185 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 09:50:10,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:50:10,369 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)] === [2024-11-19 09:50:10,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:50:10,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1173878495, now seen corresponding path program 2 times [2024-11-19 09:50:10,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:50:10,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177269871] [2024-11-19 09:50:10,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:50:10,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:50:10,391 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:50:10,395 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:10,677 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:10,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:50:10,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177269871] [2024-11-19 09:50:10,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177269871] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:50:10,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038729680] [2024-11-19 09:50:10,678 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:50:10,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:50:10,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:50:10,680 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) [2024-11-19 09:50:10,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 09:50:10,733 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:50:10,734 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:10,735 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 09:50:10,736 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:50:10,833 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:10,834 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:50:10,993 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:10,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038729680] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:50:10,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:50:10,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 18 [2024-11-19 09:50:10,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605073144] [2024-11-19 09:50:10,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:50:10,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 09:50:10,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:50:10,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 09:50:10,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2024-11-19 09:50:11,002 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-11-19 09:50:11,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 65 transitions, 501 flow. Second operand has 18 states, 18 states have (on average 8.11111111111111) internal successors, (146), 18 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:11,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:50:11,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-11-19 09:50:11,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:50:11,731 INFO L124 PetriNetUnfolderBase]: 726/1349 cut-off events. [2024-11-19 09:50:11,731 INFO L125 PetriNetUnfolderBase]: For 5182/5212 co-relation queries the response was YES. [2024-11-19 09:50:11,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5667 conditions, 1349 events. 726/1349 cut-off events. For 5182/5212 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7060 event pairs, 74 based on Foata normal form. 44/1387 useless extension candidates. Maximal degree in co-relation 3350. Up to 384 conditions per place. [2024-11-19 09:50:11,760 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 69 selfloop transitions, 74 changer transitions 4/154 dead transitions. [2024-11-19 09:50:11,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 154 transitions, 1374 flow [2024-11-19 09:50:11,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-19 09:50:11,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-19 09:50:11,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 191 transitions. [2024-11-19 09:50:11,764 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4973958333333333 [2024-11-19 09:50:11,764 INFO L175 Difference]: Start difference. First operand has 59 places, 65 transitions, 501 flow. Second operand 16 states and 191 transitions. [2024-11-19 09:50:11,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 154 transitions, 1374 flow [2024-11-19 09:50:11,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 154 transitions, 1374 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 09:50:11,774 INFO L231 Difference]: Finished difference. Result has 80 places, 111 transitions, 1057 flow [2024-11-19 09:50:11,775 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1057, PETRI_PLACES=80, PETRI_TRANSITIONS=111} [2024-11-19 09:50:11,777 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 54 predicate places. [2024-11-19 09:50:11,777 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 111 transitions, 1057 flow [2024-11-19 09:50:11,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.11111111111111) internal successors, (146), 18 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:11,777 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:50:11,778 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:50:11,795 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 09:50:11,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:50:11,979 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)] === [2024-11-19 09:50:11,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:50:11,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1344827249, now seen corresponding path program 3 times [2024-11-19 09:50:11,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:50:11,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438627500] [2024-11-19 09:50:11,979 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:50:11,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:50:11,996 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-19 09:50:11,996 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:12,220 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:12,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:50:12,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438627500] [2024-11-19 09:50:12,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438627500] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:50:12,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247595286] [2024-11-19 09:50:12,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:50:12,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:50:12,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:50:12,225 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) [2024-11-19 09:50:12,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 09:50:12,279 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-19 09:50:12,280 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:12,281 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 09:50:12,282 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:50:12,365 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:12,365 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:50:12,477 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:12,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247595286] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:50:12,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:50:12,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 19 [2024-11-19 09:50:12,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871401554] [2024-11-19 09:50:12,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:50:12,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-19 09:50:12,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:50:12,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-19 09:50:12,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2024-11-19 09:50:12,483 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-11-19 09:50:12,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 111 transitions, 1057 flow. Second operand has 19 states, 19 states have (on average 7.894736842105263) internal successors, (150), 19 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:12,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:50:12,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-11-19 09:50:12,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:50:13,207 INFO L124 PetriNetUnfolderBase]: 775/1443 cut-off events. [2024-11-19 09:50:13,208 INFO L125 PetriNetUnfolderBase]: For 10331/10349 co-relation queries the response was YES. [2024-11-19 09:50:13,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7340 conditions, 1443 events. 775/1443 cut-off events. For 10331/10349 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 7839 event pairs, 116 based on Foata normal form. 22/1461 useless extension candidates. Maximal degree in co-relation 4798. Up to 615 conditions per place. [2024-11-19 09:50:13,224 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 103 selfloop transitions, 76 changer transitions 11/197 dead transitions. [2024-11-19 09:50:13,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 197 transitions, 2135 flow [2024-11-19 09:50:13,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-19 09:50:13,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-19 09:50:13,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 216 transitions. [2024-11-19 09:50:13,227 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-11-19 09:50:13,227 INFO L175 Difference]: Start difference. First operand has 80 places, 111 transitions, 1057 flow. Second operand 20 states and 216 transitions. [2024-11-19 09:50:13,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 197 transitions, 2135 flow [2024-11-19 09:50:13,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 197 transitions, 1993 flow, removed 51 selfloop flow, removed 5 redundant places. [2024-11-19 09:50:13,252 INFO L231 Difference]: Finished difference. Result has 103 places, 140 transitions, 1508 flow [2024-11-19 09:50:13,253 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=962, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1508, PETRI_PLACES=103, PETRI_TRANSITIONS=140} [2024-11-19 09:50:13,253 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 77 predicate places. [2024-11-19 09:50:13,253 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 140 transitions, 1508 flow [2024-11-19 09:50:13,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.894736842105263) internal successors, (150), 19 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:13,254 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:50:13,254 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:50:13,271 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 09:50:13,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:50:13,455 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)] === [2024-11-19 09:50:13,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:50:13,456 INFO L85 PathProgramCache]: Analyzing trace with hash -588728359, now seen corresponding path program 4 times [2024-11-19 09:50:13,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:50:13,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544985114] [2024-11-19 09:50:13,456 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:50:13,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:50:13,478 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:50:13,478 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:13,731 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:13,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:50:13,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544985114] [2024-11-19 09:50:13,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544985114] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:50:13,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934091432] [2024-11-19 09:50:13,732 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:50:13,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:50:13,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:50:13,734 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) [2024-11-19 09:50:13,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 09:50:13,786 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:50:13,786 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:13,787 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 09:50:13,788 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:50:13,884 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:13,884 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:50:14,029 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:14,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934091432] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:50:14,029 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:50:14,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 17 [2024-11-19 09:50:14,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653589628] [2024-11-19 09:50:14,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:50:14,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-19 09:50:14,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:50:14,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-19 09:50:14,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2024-11-19 09:50:14,042 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-11-19 09:50:14,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 140 transitions, 1508 flow. Second operand has 17 states, 17 states have (on average 8.294117647058824) internal successors, (141), 17 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:14,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:50:14,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-11-19 09:50:14,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:50:15,120 INFO L124 PetriNetUnfolderBase]: 1112/2032 cut-off events. [2024-11-19 09:50:15,121 INFO L125 PetriNetUnfolderBase]: For 13645/13661 co-relation queries the response was YES. [2024-11-19 09:50:15,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10726 conditions, 2032 events. 1112/2032 cut-off events. For 13645/13661 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 11591 event pairs, 30 based on Foata normal form. 46/2064 useless extension candidates. Maximal degree in co-relation 10621. Up to 491 conditions per place. [2024-11-19 09:50:15,141 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 107 selfloop transitions, 198 changer transitions 0/312 dead transitions. [2024-11-19 09:50:15,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 312 transitions, 3693 flow [2024-11-19 09:50:15,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-19 09:50:15,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-19 09:50:15,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 295 transitions. [2024-11-19 09:50:15,143 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47275641025641024 [2024-11-19 09:50:15,144 INFO L175 Difference]: Start difference. First operand has 103 places, 140 transitions, 1508 flow. Second operand 26 states and 295 transitions. [2024-11-19 09:50:15,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 312 transitions, 3693 flow [2024-11-19 09:50:15,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 312 transitions, 3531 flow, removed 70 selfloop flow, removed 6 redundant places. [2024-11-19 09:50:15,182 INFO L231 Difference]: Finished difference. Result has 132 places, 243 transitions, 3222 flow [2024-11-19 09:50:15,186 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1397, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=3222, PETRI_PLACES=132, PETRI_TRANSITIONS=243} [2024-11-19 09:50:15,186 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 106 predicate places. [2024-11-19 09:50:15,186 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 243 transitions, 3222 flow [2024-11-19 09:50:15,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 8.294117647058824) internal successors, (141), 17 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:15,187 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:50:15,187 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:50:15,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-19 09:50:15,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:50:15,392 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)] === [2024-11-19 09:50:15,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:50:15,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1962920919, now seen corresponding path program 5 times [2024-11-19 09:50:15,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:50:15,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289179095] [2024-11-19 09:50:15,394 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:50:15,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:50:15,405 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:50:15,408 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:15,509 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:15,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:50:15,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289179095] [2024-11-19 09:50:15,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289179095] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:50:15,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982830274] [2024-11-19 09:50:15,511 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:50:15,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:50:15,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:50:15,513 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) [2024-11-19 09:50:15,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 09:50:15,571 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:50:15,571 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:15,572 WARN L253 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-19 09:50:15,573 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:50:15,745 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:15,746 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:50:15,915 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:15,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982830274] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:50:15,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:50:15,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 18 [2024-11-19 09:50:15,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860682864] [2024-11-19 09:50:15,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:50:15,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 09:50:15,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:50:15,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 09:50:15,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2024-11-19 09:50:15,925 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-11-19 09:50:15,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 243 transitions, 3222 flow. Second operand has 18 states, 18 states have (on average 7.833333333333333) internal successors, (141), 18 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:15,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:50:15,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-11-19 09:50:15,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:50:17,104 INFO L124 PetriNetUnfolderBase]: 1515/2803 cut-off events. [2024-11-19 09:50:17,105 INFO L125 PetriNetUnfolderBase]: For 28124/28138 co-relation queries the response was YES. [2024-11-19 09:50:17,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17514 conditions, 2803 events. 1515/2803 cut-off events. For 28124/28138 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 17022 event pairs, 52 based on Foata normal form. 81/2860 useless extension candidates. Maximal degree in co-relation 17317. Up to 701 conditions per place. [2024-11-19 09:50:17,137 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 111 selfloop transitions, 324 changer transitions 0/442 dead transitions. [2024-11-19 09:50:17,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 442 transitions, 6443 flow [2024-11-19 09:50:17,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-19 09:50:17,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-19 09:50:17,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 310 transitions. [2024-11-19 09:50:17,140 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46130952380952384 [2024-11-19 09:50:17,140 INFO L175 Difference]: Start difference. First operand has 132 places, 243 transitions, 3222 flow. Second operand 28 states and 310 transitions. [2024-11-19 09:50:17,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 442 transitions, 6443 flow [2024-11-19 09:50:17,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 442 transitions, 6005 flow, removed 171 selfloop flow, removed 10 redundant places. [2024-11-19 09:50:17,255 INFO L231 Difference]: Finished difference. Result has 164 places, 366 transitions, 5640 flow [2024-11-19 09:50:17,256 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2957, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=5640, PETRI_PLACES=164, PETRI_TRANSITIONS=366} [2024-11-19 09:50:17,256 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 138 predicate places. [2024-11-19 09:50:17,257 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 366 transitions, 5640 flow [2024-11-19 09:50:17,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.833333333333333) internal successors, (141), 18 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:17,257 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:50:17,257 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:50:17,274 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 09:50:17,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:50:17,458 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)] === [2024-11-19 09:50:17,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:50:17,459 INFO L85 PathProgramCache]: Analyzing trace with hash 598060203, now seen corresponding path program 6 times [2024-11-19 09:50:17,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:50:17,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230029335] [2024-11-19 09:50:17,459 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 09:50:17,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:50:17,471 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-19 09:50:17,472 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:17,657 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:17,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:50:17,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230029335] [2024-11-19 09:50:17,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230029335] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:50:17,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022051422] [2024-11-19 09:50:17,658 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 09:50:17,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:50:17,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:50:17,660 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) [2024-11-19 09:50:17,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 09:50:17,710 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-19 09:50:17,711 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:17,712 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 09:50:17,714 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:50:17,773 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:17,773 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:50:17,865 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:17,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022051422] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:50:17,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:50:17,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 15 [2024-11-19 09:50:17,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774966918] [2024-11-19 09:50:17,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:50:17,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-19 09:50:17,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:50:17,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-19 09:50:17,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-11-19 09:50:17,873 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-11-19 09:50:17,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 366 transitions, 5640 flow. Second operand has 15 states, 15 states have (on average 8.133333333333333) internal successors, (122), 15 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:17,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:50:17,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-11-19 09:50:17,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:50:19,790 INFO L124 PetriNetUnfolderBase]: 2296/4154 cut-off events. [2024-11-19 09:50:19,790 INFO L125 PetriNetUnfolderBase]: For 56539/56571 co-relation queries the response was YES. [2024-11-19 09:50:19,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29302 conditions, 4154 events. 2296/4154 cut-off events. For 56539/56571 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 26234 event pairs, 78 based on Foata normal form. 92/4216 useless extension candidates. Maximal degree in co-relation 28435. Up to 1045 conditions per place. [2024-11-19 09:50:19,845 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 147 selfloop transitions, 573 changer transitions 4/731 dead transitions. [2024-11-19 09:50:19,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 731 transitions, 12532 flow [2024-11-19 09:50:19,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-19 09:50:19,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2024-11-19 09:50:19,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 470 transitions. [2024-11-19 09:50:19,847 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47764227642276424 [2024-11-19 09:50:19,848 INFO L175 Difference]: Start difference. First operand has 164 places, 366 transitions, 5640 flow. Second operand 41 states and 470 transitions. [2024-11-19 09:50:19,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 731 transitions, 12532 flow [2024-11-19 09:50:20,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 731 transitions, 11707 flow, removed 206 selfloop flow, removed 6 redundant places. [2024-11-19 09:50:20,133 INFO L231 Difference]: Finished difference. Result has 213 places, 639 transitions, 11191 flow [2024-11-19 09:50:20,134 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=5236, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=310, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=11191, PETRI_PLACES=213, PETRI_TRANSITIONS=639} [2024-11-19 09:50:20,135 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 187 predicate places. [2024-11-19 09:50:20,135 INFO L471 AbstractCegarLoop]: Abstraction has has 213 places, 639 transitions, 11191 flow [2024-11-19 09:50:20,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.133333333333333) internal successors, (122), 15 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:20,135 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:50:20,136 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:50:20,153 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-19 09:50:20,336 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,SelfDestructingSolverStorable11 [2024-11-19 09:50:20,337 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)] === [2024-11-19 09:50:20,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:50:20,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1371433279, now seen corresponding path program 7 times [2024-11-19 09:50:20,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:50:20,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126233543] [2024-11-19 09:50:20,337 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 09:50:20,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:50:20,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:50:20,443 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:20,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:50:20,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126233543] [2024-11-19 09:50:20,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126233543] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:50:20,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856904052] [2024-11-19 09:50:20,445 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 09:50:20,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:50:20,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:50:20,447 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) [2024-11-19 09:50:20,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 09:50:20,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:50:20,497 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 09:50:20,498 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:50:20,572 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:20,573 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:50:20,638 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:20,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856904052] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:50:20,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:50:20,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-11-19 09:50:20,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590768197] [2024-11-19 09:50:20,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:50:20,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 09:50:20,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:50:20,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 09:50:20,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-19 09:50:20,644 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-11-19 09:50:20,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 639 transitions, 11191 flow. Second operand has 14 states, 14 states have (on average 8.285714285714286) internal successors, (116), 14 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:20,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:50:20,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-11-19 09:50:20,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:50:22,299 INFO L124 PetriNetUnfolderBase]: 2722/4883 cut-off events. [2024-11-19 09:50:22,299 INFO L125 PetriNetUnfolderBase]: For 85009/85041 co-relation queries the response was YES. [2024-11-19 09:50:22,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38101 conditions, 4883 events. 2722/4883 cut-off events. For 85009/85041 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 30610 event pairs, 157 based on Foata normal form. 28/4871 useless extension candidates. Maximal degree in co-relation 37218. Up to 1246 conditions per place. [2024-11-19 09:50:22,356 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 213 selfloop transitions, 595 changer transitions 1/816 dead transitions. [2024-11-19 09:50:22,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 816 transitions, 15695 flow [2024-11-19 09:50:22,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-19 09:50:22,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-19 09:50:22,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 277 transitions. [2024-11-19 09:50:22,360 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5018115942028986 [2024-11-19 09:50:22,361 INFO L175 Difference]: Start difference. First operand has 213 places, 639 transitions, 11191 flow. Second operand 23 states and 277 transitions. [2024-11-19 09:50:22,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 816 transitions, 15695 flow [2024-11-19 09:50:22,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 816 transitions, 14826 flow, removed 390 selfloop flow, removed 6 redundant places. [2024-11-19 09:50:22,904 INFO L231 Difference]: Finished difference. Result has 231 places, 749 transitions, 13529 flow [2024-11-19 09:50:22,905 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=10444, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=639, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=484, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=13529, PETRI_PLACES=231, PETRI_TRANSITIONS=749} [2024-11-19 09:50:22,905 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 205 predicate places. [2024-11-19 09:50:22,905 INFO L471 AbstractCegarLoop]: Abstraction has has 231 places, 749 transitions, 13529 flow [2024-11-19 09:50:22,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.285714285714286) internal successors, (116), 14 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:22,906 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:50:22,906 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:50:22,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-19 09:50:23,106 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,SelfDestructingSolverStorable12 [2024-11-19 09:50:23,106 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)] === [2024-11-19 09:50:23,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:50:23,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1212653539, now seen corresponding path program 8 times [2024-11-19 09:50:23,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:50:23,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196466538] [2024-11-19 09:50:23,107 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:50:23,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:50:23,126 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:50:23,126 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:23,345 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:23,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:50:23,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196466538] [2024-11-19 09:50:23,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196466538] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:50:23,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314913916] [2024-11-19 09:50:23,346 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:50:23,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:50:23,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:50:23,348 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) [2024-11-19 09:50:23,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 09:50:23,397 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:50:23,398 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:23,399 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 09:50:23,400 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:50:23,493 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:23,494 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:50:23,609 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:23,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314913916] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:50:23,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:50:23,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 17 [2024-11-19 09:50:23,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771826622] [2024-11-19 09:50:23,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:50:23,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-19 09:50:23,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:50:23,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-19 09:50:23,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2024-11-19 09:50:23,623 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-11-19 09:50:23,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 749 transitions, 13529 flow. Second operand has 17 states, 17 states have (on average 8.176470588235293) internal successors, (139), 17 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) [2024-11-19 09:50:23,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:50:23,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-11-19 09:50:23,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:50:25,836 INFO L124 PetriNetUnfolderBase]: 3498/6311 cut-off events. [2024-11-19 09:50:25,836 INFO L125 PetriNetUnfolderBase]: For 113729/113759 co-relation queries the response was YES. [2024-11-19 09:50:25,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49539 conditions, 6311 events. 3498/6311 cut-off events. For 113729/113759 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 41341 event pairs, 277 based on Foata normal form. 68/6335 useless extension candidates. Maximal degree in co-relation 49428. Up to 1454 conditions per place. [2024-11-19 09:50:25,906 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 318 selfloop transitions, 775 changer transitions 1/1101 dead transitions. [2024-11-19 09:50:25,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 1101 transitions, 21861 flow [2024-11-19 09:50:25,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-19 09:50:25,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-11-19 09:50:25,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 352 transitions. [2024-11-19 09:50:25,908 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-11-19 09:50:25,908 INFO L175 Difference]: Start difference. First operand has 231 places, 749 transitions, 13529 flow. Second operand 32 states and 352 transitions. [2024-11-19 09:50:25,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 1101 transitions, 21861 flow [2024-11-19 09:50:26,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 1101 transitions, 21447 flow, removed 69 selfloop flow, removed 10 redundant places. [2024-11-19 09:50:26,695 INFO L231 Difference]: Finished difference. Result has 265 places, 1012 transitions, 21293 flow [2024-11-19 09:50:26,696 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=13095, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=744, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=520, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=21293, PETRI_PLACES=265, PETRI_TRANSITIONS=1012} [2024-11-19 09:50:26,696 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 239 predicate places. [2024-11-19 09:50:26,696 INFO L471 AbstractCegarLoop]: Abstraction has has 265 places, 1012 transitions, 21293 flow [2024-11-19 09:50:26,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 8.176470588235293) internal successors, (139), 17 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) [2024-11-19 09:50:26,697 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:50:26,697 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:50:26,709 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-19 09:50:26,897 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,SelfDestructingSolverStorable13 [2024-11-19 09:50:26,898 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)] === [2024-11-19 09:50:26,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:50:26,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1993454905, now seen corresponding path program 9 times [2024-11-19 09:50:26,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:50:26,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866930935] [2024-11-19 09:50:26,898 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:50:26,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:50:26,908 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 09:50:26,909 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:27,093 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:27,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:50:27,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866930935] [2024-11-19 09:50:27,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866930935] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:50:27,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259520623] [2024-11-19 09:50:27,094 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:50:27,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:50:27,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:50:27,095 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) [2024-11-19 09:50:27,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 09:50:27,141 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 09:50:27,141 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:27,142 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 09:50:27,143 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:50:27,208 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:27,208 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:50:27,305 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:27,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259520623] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:50:27,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:50:27,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 19 [2024-11-19 09:50:27,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365633750] [2024-11-19 09:50:27,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:50:27,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-19 09:50:27,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:50:27,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-19 09:50:27,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2024-11-19 09:50:27,309 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-11-19 09:50:27,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 1012 transitions, 21293 flow. Second operand has 19 states, 19 states have (on average 8.0) internal successors, (152), 19 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:27,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:50:27,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-11-19 09:50:27,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:50:31,186 INFO L124 PetriNetUnfolderBase]: 4010/7252 cut-off events. [2024-11-19 09:50:31,187 INFO L125 PetriNetUnfolderBase]: For 169695/169723 co-relation queries the response was YES. [2024-11-19 09:50:31,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63237 conditions, 7252 events. 4010/7252 cut-off events. For 169695/169723 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 48673 event pairs, 333 based on Foata normal form. 40/7250 useless extension candidates. Maximal degree in co-relation 62201. Up to 1666 conditions per place. [2024-11-19 09:50:31,305 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 257 selfloop transitions, 975 changer transitions 5/1244 dead transitions. [2024-11-19 09:50:31,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 1244 transitions, 28090 flow [2024-11-19 09:50:31,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-19 09:50:31,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-11-19 09:50:31,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 344 transitions. [2024-11-19 09:50:31,307 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4479166666666667 [2024-11-19 09:50:31,307 INFO L175 Difference]: Start difference. First operand has 265 places, 1012 transitions, 21293 flow. Second operand 32 states and 344 transitions. [2024-11-19 09:50:31,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 1244 transitions, 28090 flow [2024-11-19 09:50:32,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 1244 transitions, 27555 flow, removed 245 selfloop flow, removed 7 redundant places. [2024-11-19 09:50:32,873 INFO L231 Difference]: Finished difference. Result has 302 places, 1188 transitions, 28343 flow [2024-11-19 09:50:32,874 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=20786, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1010, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=800, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=28343, PETRI_PLACES=302, PETRI_TRANSITIONS=1188} [2024-11-19 09:50:32,875 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 276 predicate places. [2024-11-19 09:50:32,875 INFO L471 AbstractCegarLoop]: Abstraction has has 302 places, 1188 transitions, 28343 flow [2024-11-19 09:50:32,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 8.0) internal successors, (152), 19 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:32,875 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:50:32,875 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:50:32,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-19 09:50:33,076 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,SelfDestructingSolverStorable14 [2024-11-19 09:50:33,076 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)] === [2024-11-19 09:50:33,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:50:33,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1097276307, now seen corresponding path program 10 times [2024-11-19 09:50:33,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:50:33,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102864237] [2024-11-19 09:50:33,077 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:50:33,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:50:33,087 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:50:33,088 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:33,213 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:33,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:50:33,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102864237] [2024-11-19 09:50:33,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102864237] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:50:33,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721464960] [2024-11-19 09:50:33,214 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:50:33,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:50:33,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:50:33,216 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) [2024-11-19 09:50:33,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-19 09:50:33,266 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:50:33,266 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:33,267 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 09:50:33,268 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:50:33,321 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:33,322 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:50:33,392 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:33,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721464960] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:50:33,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:50:33,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-11-19 09:50:33,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155159961] [2024-11-19 09:50:33,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:50:33,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 09:50:33,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:50:33,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 09:50:33,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2024-11-19 09:50:33,398 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-11-19 09:50:33,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 1188 transitions, 28343 flow. Second operand has 16 states, 16 states have (on average 8.0625) internal successors, (129), 16 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:33,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:50:33,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-11-19 09:50:33,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:50:36,050 INFO L124 PetriNetUnfolderBase]: 4247/7657 cut-off events. [2024-11-19 09:50:36,050 INFO L125 PetriNetUnfolderBase]: For 211881/211935 co-relation queries the response was YES. [2024-11-19 09:50:36,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73362 conditions, 7657 events. 4247/7657 cut-off events. For 211881/211935 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 51943 event pairs, 540 based on Foata normal form. 40/7655 useless extension candidates. Maximal degree in co-relation 72850. Up to 2751 conditions per place. [2024-11-19 09:50:36,154 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 490 selfloop transitions, 782 changer transitions 4/1283 dead transitions. [2024-11-19 09:50:36,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 1283 transitions, 32640 flow [2024-11-19 09:50:36,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-19 09:50:36,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-19 09:50:36,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 240 transitions. [2024-11-19 09:50:36,155 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-11-19 09:50:36,155 INFO L175 Difference]: Start difference. First operand has 302 places, 1188 transitions, 28343 flow. Second operand 22 states and 240 transitions. [2024-11-19 09:50:36,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 1283 transitions, 32640 flow [2024-11-19 09:50:38,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 1283 transitions, 31968 flow, removed 267 selfloop flow, removed 15 redundant places. [2024-11-19 09:50:38,199 INFO L231 Difference]: Finished difference. Result has 307 places, 1233 transitions, 30385 flow [2024-11-19 09:50:38,200 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=27641, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=732, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=30385, PETRI_PLACES=307, PETRI_TRANSITIONS=1233} [2024-11-19 09:50:38,200 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 281 predicate places. [2024-11-19 09:50:38,200 INFO L471 AbstractCegarLoop]: Abstraction has has 307 places, 1233 transitions, 30385 flow [2024-11-19 09:50:38,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.0625) internal successors, (129), 16 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:38,201 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:50:38,201 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:50:38,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-19 09:50:38,401 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,SelfDestructingSolverStorable15 [2024-11-19 09:50:38,401 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)] === [2024-11-19 09:50:38,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:50:38,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1238482451, now seen corresponding path program 11 times [2024-11-19 09:50:38,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:50:38,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202878820] [2024-11-19 09:50:38,402 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:50:38,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:50:38,416 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-19 09:50:38,416 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:38,526 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:38,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:50:38,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202878820] [2024-11-19 09:50:38,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202878820] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:50:38,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125498291] [2024-11-19 09:50:38,527 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:50:38,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:50:38,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:50:38,529 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) [2024-11-19 09:50:38,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-19 09:50:38,580 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-19 09:50:38,580 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:38,582 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 09:50:38,583 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:50:38,662 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:38,662 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:50:38,778 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:38,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125498291] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:50:38,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:50:38,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-11-19 09:50:38,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142503528] [2024-11-19 09:50:38,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:50:38,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 09:50:38,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:50:38,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 09:50:38,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-11-19 09:50:38,782 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-11-19 09:50:38,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 1233 transitions, 30385 flow. Second operand has 16 states, 16 states have (on average 8.0625) internal successors, (129), 16 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:38,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:50:38,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-11-19 09:50:38,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:50:43,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-19 09:50:46,664 INFO L124 PetriNetUnfolderBase]: 5687/10284 cut-off events. [2024-11-19 09:50:46,664 INFO L125 PetriNetUnfolderBase]: For 283538/283586 co-relation queries the response was YES. [2024-11-19 09:50:46,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100170 conditions, 10284 events. 5687/10284 cut-off events. For 283538/283586 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 73705 event pairs, 663 based on Foata normal form. 106/10335 useless extension candidates. Maximal degree in co-relation 99650. Up to 3132 conditions per place. [2024-11-19 09:50:46,791 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 988 selfloop transitions, 840 changer transitions 1/1836 dead transitions. [2024-11-19 09:50:46,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 1836 transitions, 48170 flow [2024-11-19 09:50:46,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-19 09:50:46,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-11-19 09:50:46,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 422 transitions. [2024-11-19 09:50:46,792 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46271929824561403 [2024-11-19 09:50:46,792 INFO L175 Difference]: Start difference. First operand has 307 places, 1233 transitions, 30385 flow. Second operand 38 states and 422 transitions. [2024-11-19 09:50:46,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 1836 transitions, 48170 flow [2024-11-19 09:50:50,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 1836 transitions, 47593 flow, removed 47 selfloop flow, removed 12 redundant places. [2024-11-19 09:50:50,661 INFO L231 Difference]: Finished difference. Result has 352 places, 1615 transitions, 43133 flow [2024-11-19 09:50:50,662 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=29911, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=483, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=580, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=43133, PETRI_PLACES=352, PETRI_TRANSITIONS=1615} [2024-11-19 09:50:50,663 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 326 predicate places. [2024-11-19 09:50:50,663 INFO L471 AbstractCegarLoop]: Abstraction has has 352 places, 1615 transitions, 43133 flow [2024-11-19 09:50:50,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.0625) internal successors, (129), 16 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:50,663 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:50:50,663 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:50:50,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-19 09:50:50,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-19 09:50:50,864 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)] === [2024-11-19 09:50:50,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:50:50,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1825148585, now seen corresponding path program 12 times [2024-11-19 09:50:50,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:50:50,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950055121] [2024-11-19 09:50:50,865 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 09:50:50,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:50:50,875 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-19 09:50:50,876 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:51,070 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:51,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:50:51,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950055121] [2024-11-19 09:50:51,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950055121] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:50:51,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374931123] [2024-11-19 09:50:51,070 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 09:50:51,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:50:51,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:50:51,072 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) [2024-11-19 09:50:51,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-19 09:50:51,123 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-19 09:50:51,123 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:51,124 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 09:50:51,125 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:50:51,196 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:51,196 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:50:51,331 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:51,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374931123] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:50:51,332 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:50:51,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 17 [2024-11-19 09:50:51,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737879558] [2024-11-19 09:50:51,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:50:51,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-19 09:50:51,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:50:51,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-19 09:50:51,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2024-11-19 09:50:51,340 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-11-19 09:50:51,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 1615 transitions, 43133 flow. Second operand has 17 states, 17 states have (on average 8.058823529411764) internal successors, (137), 17 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:51,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:50:51,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-11-19 09:50:51,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:50:55,634 INFO L124 PetriNetUnfolderBase]: 5730/10390 cut-off events. [2024-11-19 09:50:55,634 INFO L125 PetriNetUnfolderBase]: For 343619/343687 co-relation queries the response was YES. [2024-11-19 09:50:55,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107700 conditions, 10390 events. 5730/10390 cut-off events. For 343619/343687 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 74989 event pairs, 1525 based on Foata normal form. 40/10369 useless extension candidates. Maximal degree in co-relation 107166. Up to 7602 conditions per place. [2024-11-19 09:50:55,798 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 1442 selfloop transitions, 201 changer transitions 5/1655 dead transitions. [2024-11-19 09:50:55,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 1655 transitions, 47177 flow [2024-11-19 09:50:55,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 09:50:55,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-19 09:50:55,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 138 transitions. [2024-11-19 09:50:55,800 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4423076923076923 [2024-11-19 09:50:55,800 INFO L175 Difference]: Start difference. First operand has 352 places, 1615 transitions, 43133 flow. Second operand 13 states and 138 transitions. [2024-11-19 09:50:55,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 1655 transitions, 47177 flow [2024-11-19 09:51:00,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 1655 transitions, 46715 flow, removed 174 selfloop flow, removed 2 redundant places. [2024-11-19 09:51:00,372 INFO L231 Difference]: Finished difference. Result has 368 places, 1626 transitions, 43494 flow [2024-11-19 09:51:00,373 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=42675, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1615, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=190, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=43494, PETRI_PLACES=368, PETRI_TRANSITIONS=1626} [2024-11-19 09:51:00,374 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 342 predicate places. [2024-11-19 09:51:00,374 INFO L471 AbstractCegarLoop]: Abstraction has has 368 places, 1626 transitions, 43494 flow [2024-11-19 09:51:00,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 8.058823529411764) internal successors, (137), 17 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:51:00,374 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:51:00,374 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:51:00,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-19 09:51:00,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:51:00,579 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)] === [2024-11-19 09:51:00,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:51:00,579 INFO L85 PathProgramCache]: Analyzing trace with hash 125533037, now seen corresponding path program 13 times [2024-11-19 09:51:00,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:51:00,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462644712] [2024-11-19 09:51:00,579 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 09:51:00,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:51:00,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:51:00,692 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:51:00,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:51:00,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462644712] [2024-11-19 09:51:00,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462644712] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:51:00,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744565057] [2024-11-19 09:51:00,692 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 09:51:00,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:51:00,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:51:00,695 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) [2024-11-19 09:51:00,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-19 09:51:00,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:51:00,743 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 09:51:00,744 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:51:00,807 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:51:00,808 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:51:00,899 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:51:00,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744565057] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:51:00,899 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:51:00,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-11-19 09:51:00,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314064841] [2024-11-19 09:51:00,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:51:00,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 09:51:00,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:51:00,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 09:51:00,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2024-11-19 09:51:00,907 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-11-19 09:51:00,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 1626 transitions, 43494 flow. Second operand has 16 states, 16 states have (on average 8.1875) internal successors, (131), 16 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:51:00,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:51:00,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-11-19 09:51:00,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:51:06,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-19 09:51:13,672 INFO L124 PetriNetUnfolderBase]: 8715/15642 cut-off events. [2024-11-19 09:51:13,672 INFO L125 PetriNetUnfolderBase]: For 510331/510423 co-relation queries the response was YES. [2024-11-19 09:51:13,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163773 conditions, 15642 events. 8715/15642 cut-off events. For 510331/510423 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 118130 event pairs, 794 based on Foata normal form. 90/15631 useless extension candidates. Maximal degree in co-relation 163108. Up to 4132 conditions per place. [2024-11-19 09:51:14,070 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 863 selfloop transitions, 1746 changer transitions 3/2619 dead transitions. [2024-11-19 09:51:14,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 2619 transitions, 75353 flow [2024-11-19 09:51:14,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-19 09:51:14,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-11-19 09:51:14,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 357 transitions. [2024-11-19 09:51:14,071 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4798387096774194 [2024-11-19 09:51:14,071 INFO L175 Difference]: Start difference. First operand has 368 places, 1626 transitions, 43494 flow. Second operand 31 states and 357 transitions. [2024-11-19 09:51:14,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 2619 transitions, 75353 flow [2024-11-19 09:51:22,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 2619 transitions, 75060 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-11-19 09:51:22,100 INFO L231 Difference]: Finished difference. Result has 402 places, 2522 transitions, 74872 flow [2024-11-19 09:51:22,102 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=43168, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1621, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1015, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=74872, PETRI_PLACES=402, PETRI_TRANSITIONS=2522} [2024-11-19 09:51:22,103 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 376 predicate places. [2024-11-19 09:51:22,103 INFO L471 AbstractCegarLoop]: Abstraction has has 402 places, 2522 transitions, 74872 flow [2024-11-19 09:51:22,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.1875) internal successors, (131), 16 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:51:22,103 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:51:22,103 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:51:22,116 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-19 09:51:22,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:51:22,304 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)] === [2024-11-19 09:51:22,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:51:22,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1017491373, now seen corresponding path program 14 times [2024-11-19 09:51:22,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:51:22,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332376695] [2024-11-19 09:51:22,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:51:22,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:51:22,318 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:51:22,318 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:51:22,465 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:51:22,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:51:22,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332376695] [2024-11-19 09:51:22,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332376695] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:51:22,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012624574] [2024-11-19 09:51:22,466 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:51:22,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:51:22,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:51:22,468 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) [2024-11-19 09:51:22,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-19 09:51:22,518 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:51:22,518 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:51:22,519 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 09:51:22,520 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:51:22,586 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:51:22,586 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:51:22,682 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:51:22,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012624574] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:51:22,682 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:51:22,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 16 [2024-11-19 09:51:22,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342445991] [2024-11-19 09:51:22,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:51:22,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 09:51:22,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:51:22,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 09:51:22,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2024-11-19 09:51:22,691 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-11-19 09:51:22,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 2522 transitions, 74872 flow. Second operand has 16 states, 16 states have (on average 8.0625) internal successors, (129), 16 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:51:22,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:51:22,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-11-19 09:51:22,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand