./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-theta/unwind3-100.i --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/pthread-theta/unwind3-100.i -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 51e84781857cfc73ae131a38742d9d6222707e54f6a010e2853f82c7770f5a96 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 09:58:06,309 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 09:58:06,349 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-19 09:58:06,357 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 09:58:06,358 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 09:58:06,374 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 09:58:06,375 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 09:58:06,375 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 09:58:06,376 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 09:58:06,376 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 09:58:06,376 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 09:58:06,376 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 09:58:06,377 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 09:58:06,377 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 09:58:06,377 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 09:58:06,378 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 09:58:06,378 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 09:58:06,378 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 09:58:06,379 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 09:58:06,379 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 09:58:06,379 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-19 09:58:06,382 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-19 09:58:06,383 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-19 09:58:06,383 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 09:58:06,383 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-19 09:58:06,383 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 09:58:06,384 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 09:58:06,384 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 09:58:06,384 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 09:58:06,384 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 09:58:06,384 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 09:58:06,385 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 09:58:06,385 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 09:58:06,385 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:58:06,385 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 09:58:06,385 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 09:58:06,386 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 09:58:06,386 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 09:58:06,386 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 09:58:06,387 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 09:58:06,387 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 09:58:06,387 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 09:58:06,387 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 51e84781857cfc73ae131a38742d9d6222707e54f6a010e2853f82c7770f5a96 [2024-11-19 09:58:06,620 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 09:58:06,639 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 09:58:06,641 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 09:58:06,643 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 09:58:06,643 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 09:58:06,644 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/unwind3-100.i [2024-11-19 09:58:07,959 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 09:58:08,196 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 09:58:08,200 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind3-100.i [2024-11-19 09:58:08,217 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4163ecea9/ee4d1e0fd5a84b8788618f39e1e524fc/FLAG219f6ceb9 [2024-11-19 09:58:08,238 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4163ecea9/ee4d1e0fd5a84b8788618f39e1e524fc [2024-11-19 09:58:08,241 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 09:58:08,242 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 09:58:08,243 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 09:58:08,244 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 09:58:08,253 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 09:58:08,253 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:58:08" (1/1) ... [2024-11-19 09:58:08,254 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4795ff24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:58:08, skipping insertion in model container [2024-11-19 09:58:08,254 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:58:08" (1/1) ... [2024-11-19 09:58:08,320 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 09:58:08,605 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:58:08,612 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 09:58:08,650 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:58:08,678 INFO L204 MainTranslator]: Completed translation [2024-11-19 09:58:08,679 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:58:08 WrapperNode [2024-11-19 09:58:08,679 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 09:58:08,680 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 09:58:08,680 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 09:58:08,681 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 09:58:08,687 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:58:08" (1/1) ... [2024-11-19 09:58:08,698 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:58:08" (1/1) ... [2024-11-19 09:58:08,713 INFO L138 Inliner]: procedures = 169, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 66 [2024-11-19 09:58:08,713 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 09:58:08,714 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 09:58:08,714 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 09:58:08,714 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 09:58:08,721 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:58:08" (1/1) ... [2024-11-19 09:58:08,722 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:58:08" (1/1) ... [2024-11-19 09:58:08,727 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:58:08" (1/1) ... [2024-11-19 09:58:08,743 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 09:58:08,743 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:58:08" (1/1) ... [2024-11-19 09:58:08,744 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:58:08" (1/1) ... [2024-11-19 09:58:08,747 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:58:08" (1/1) ... [2024-11-19 09:58:08,749 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:58:08" (1/1) ... [2024-11-19 09:58:08,750 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:58:08" (1/1) ... [2024-11-19 09:58:08,751 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:58:08" (1/1) ... [2024-11-19 09:58:08,753 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 09:58:08,753 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 09:58:08,753 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 09:58:08,754 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 09:58:08,754 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:58:08" (1/1) ... [2024-11-19 09:58:08,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:58:08,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:58:08,784 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 09:58:08,790 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 09:58:08,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 09:58:08,827 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2024-11-19 09:58:08,827 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2024-11-19 09:58:08,827 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-11-19 09:58:08,827 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-11-19 09:58:08,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 09:58:08,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 09:58:08,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 09:58:08,830 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 09:58:08,964 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 09:58:08,966 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 09:58:09,114 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 09:58:09,114 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 09:58:09,200 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 09:58:09,201 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-19 09:58:09,201 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:58:09 BoogieIcfgContainer [2024-11-19 09:58:09,201 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 09:58:09,203 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 09:58:09,203 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 09:58:09,206 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 09:58:09,207 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 09:58:08" (1/3) ... [2024-11-19 09:58:09,208 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fb64ee5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:58:09, skipping insertion in model container [2024-11-19 09:58:09,208 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:58:08" (2/3) ... [2024-11-19 09:58:09,208 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fb64ee5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:58:09, skipping insertion in model container [2024-11-19 09:58:09,209 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:58:09" (3/3) ... [2024-11-19 09:58:09,210 INFO L112 eAbstractionObserver]: Analyzing ICFG unwind3-100.i [2024-11-19 09:58:09,222 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 09:58:09,223 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-19 09:58:09,223 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 09:58:09,255 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 09:58:09,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 27 transitions, 62 flow [2024-11-19 09:58:09,305 INFO L124 PetriNetUnfolderBase]: 6/43 cut-off events. [2024-11-19 09:58:09,305 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:58:09,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 43 events. 6/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 102 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 23. Up to 4 conditions per place. [2024-11-19 09:58:09,307 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 27 transitions, 62 flow [2024-11-19 09:58:09,310 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 26 transitions, 59 flow [2024-11-19 09:58:09,316 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:58:09,321 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;@f2bb078, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:58:09,321 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-19 09:58:09,326 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:58:09,326 INFO L124 PetriNetUnfolderBase]: 1/16 cut-off events. [2024-11-19 09:58:09,326 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:58:09,327 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:58:09,327 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:58:09,327 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 09:58:09,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:58:09,334 INFO L85 PathProgramCache]: Analyzing trace with hash -242791537, now seen corresponding path program 1 times [2024-11-19 09:58:09,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:58:09,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248045196] [2024-11-19 09:58:09,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:58:09,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:58:09,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:58:09,576 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 09:58:09,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:58:09,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248045196] [2024-11-19 09:58:09,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248045196] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:58:09,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:58:09,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:58:09,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598534381] [2024-11-19 09:58:09,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:58:09,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:58:09,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:58:09,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:58:09,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:58:09,656 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-11-19 09:58:09,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 59 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:58:09,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:58:09,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-11-19 09:58:09,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:58:09,741 INFO L124 PetriNetUnfolderBase]: 69/163 cut-off events. [2024-11-19 09:58:09,741 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-19 09:58:09,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304 conditions, 163 events. 69/163 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 609 event pairs, 41 based on Foata normal form. 18/166 useless extension candidates. Maximal degree in co-relation 287. Up to 124 conditions per place. [2024-11-19 09:58:09,744 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 16 selfloop transitions, 3 changer transitions 0/26 dead transitions. [2024-11-19 09:58:09,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 26 transitions, 97 flow [2024-11-19 09:58:09,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:58:09,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:58:09,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 54 transitions. [2024-11-19 09:58:09,752 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-19 09:58:09,753 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 59 flow. Second operand 4 states and 54 transitions. [2024-11-19 09:58:09,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 26 transitions, 97 flow [2024-11-19 09:58:09,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 26 transitions, 96 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:58:09,757 INFO L231 Difference]: Finished difference. Result has 31 places, 23 transitions, 62 flow [2024-11-19 09:58:09,758 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=62, PETRI_PLACES=31, PETRI_TRANSITIONS=23} [2024-11-19 09:58:09,761 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 2 predicate places. [2024-11-19 09:58:09,761 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 23 transitions, 62 flow [2024-11-19 09:58:09,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:58:09,761 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:58:09,761 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-19 09:58:09,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 09:58:09,762 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 09:58:09,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:58:09,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1062405037, now seen corresponding path program 1 times [2024-11-19 09:58:09,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:58:09,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053046699] [2024-11-19 09:58:09,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:58:09,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:58:09,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:58:09,779 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 09:58:09,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:58:09,800 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 09:58:09,800 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 09:58:09,801 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-19 09:58:09,802 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2024-11-19 09:58:09,803 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2024-11-19 09:58:09,803 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2024-11-19 09:58:09,803 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2024-11-19 09:58:09,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 09:58:09,803 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-19 09:58:09,805 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 09:58:09,805 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-19 09:58:09,822 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 09:58:09,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 43 transitions, 106 flow [2024-11-19 09:58:09,835 INFO L124 PetriNetUnfolderBase]: 9/65 cut-off events. [2024-11-19 09:58:09,836 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 09:58:09,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 65 events. 9/65 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 188 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 76. Up to 6 conditions per place. [2024-11-19 09:58:09,836 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 43 transitions, 106 flow [2024-11-19 09:58:09,837 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 30 transitions, 73 flow [2024-11-19 09:58:09,838 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:58:09,839 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;@f2bb078, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:58:09,839 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-19 09:58:09,846 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:58:09,846 INFO L124 PetriNetUnfolderBase]: 1/16 cut-off events. [2024-11-19 09:58:09,846 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-19 09:58:09,846 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:58:09,846 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:58:09,846 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-19 09:58:09,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:58:09,847 INFO L85 PathProgramCache]: Analyzing trace with hash 537264105, now seen corresponding path program 1 times [2024-11-19 09:58:09,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:58:09,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267389986] [2024-11-19 09:58:09,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:58:09,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:58:09,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:58:09,916 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 09:58:09,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:58:09,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267389986] [2024-11-19 09:58:09,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267389986] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:58:09,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:58:09,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:58:09,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664261932] [2024-11-19 09:58:09,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:58:09,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:58:09,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:58:09,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:58:09,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:58:09,925 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-11-19 09:58:09,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 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 09:58:09,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:58:09,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-11-19 09:58:09,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:58:10,044 INFO L124 PetriNetUnfolderBase]: 390/761 cut-off events. [2024-11-19 09:58:10,044 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-11-19 09:58:10,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1422 conditions, 761 events. 390/761 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4017 event pairs, 204 based on Foata normal form. 72/779 useless extension candidates. Maximal degree in co-relation 406. Up to 616 conditions per place. [2024-11-19 09:58:10,057 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 20 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2024-11-19 09:58:10,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 31 transitions, 121 flow [2024-11-19 09:58:10,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:58:10,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:58:10,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 74 transitions. [2024-11-19 09:58:10,059 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43023255813953487 [2024-11-19 09:58:10,059 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 73 flow. Second operand 4 states and 74 transitions. [2024-11-19 09:58:10,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 31 transitions, 121 flow [2024-11-19 09:58:10,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 31 transitions, 120 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:58:10,060 INFO L231 Difference]: Finished difference. Result has 37 places, 28 transitions, 80 flow [2024-11-19 09:58:10,060 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=80, PETRI_PLACES=37, PETRI_TRANSITIONS=28} [2024-11-19 09:58:10,061 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 2 predicate places. [2024-11-19 09:58:10,061 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 28 transitions, 80 flow [2024-11-19 09:58:10,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 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 09:58:10,063 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:58:10,063 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:58:10,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 09:58:10,063 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-19 09:58:10,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:58:10,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1605050629, now seen corresponding path program 1 times [2024-11-19 09:58:10,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:58:10,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288306394] [2024-11-19 09:58:10,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:58:10,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:58:10,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:58:10,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:58:10,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:58:10,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288306394] [2024-11-19 09:58:10,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288306394] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:58:10,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:58:10,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 09:58:10,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465591113] [2024-11-19 09:58:10,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:58:10,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:58:10,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:58:10,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:58:10,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:58:10,118 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-11-19 09:58:10,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 28 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 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 09:58:10,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:58:10,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-11-19 09:58:10,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:58:10,219 INFO L124 PetriNetUnfolderBase]: 390/749 cut-off events. [2024-11-19 09:58:10,220 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-11-19 09:58:10,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1439 conditions, 749 events. 390/749 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3872 event pairs, 354 based on Foata normal form. 0/706 useless extension candidates. Maximal degree in co-relation 519. Up to 620 conditions per place. [2024-11-19 09:58:10,225 INFO L140 encePairwiseOnDemand]: 41/43 looper letters, 17 selfloop transitions, 1 changer transitions 1/27 dead transitions. [2024-11-19 09:58:10,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 27 transitions, 116 flow [2024-11-19 09:58:10,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:58:10,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:58:10,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2024-11-19 09:58:10,228 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4263565891472868 [2024-11-19 09:58:10,228 INFO L175 Difference]: Start difference. First operand has 37 places, 28 transitions, 80 flow. Second operand 3 states and 55 transitions. [2024-11-19 09:58:10,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 27 transitions, 116 flow [2024-11-19 09:58:10,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 27 transitions, 112 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:58:10,229 INFO L231 Difference]: Finished difference. Result has 36 places, 26 transitions, 74 flow [2024-11-19 09:58:10,229 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2024-11-19 09:58:10,231 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 1 predicate places. [2024-11-19 09:58:10,231 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 74 flow [2024-11-19 09:58:10,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 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 09:58:10,232 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:58:10,232 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2024-11-19 09:58:10,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 09:58:10,232 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-19 09:58:10,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:58:10,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1784029904, now seen corresponding path program 1 times [2024-11-19 09:58:10,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:58:10,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612681970] [2024-11-19 09:58:10,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:58:10,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:58:10,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:58:10,273 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 09:58:10,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:58:10,285 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 09:58:10,285 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 09:58:10,286 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-19 09:58:10,286 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2024-11-19 09:58:10,286 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2024-11-19 09:58:10,286 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 6 remaining) [2024-11-19 09:58:10,286 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2024-11-19 09:58:10,286 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2024-11-19 09:58:10,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 09:58:10,287 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-19 09:58:10,287 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 09:58:10,287 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-19 09:58:10,306 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 09:58:10,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 59 transitions, 154 flow [2024-11-19 09:58:10,314 INFO L124 PetriNetUnfolderBase]: 12/87 cut-off events. [2024-11-19 09:58:10,314 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-19 09:58:10,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 87 events. 12/87 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 284 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 104. Up to 8 conditions per place. [2024-11-19 09:58:10,314 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 59 transitions, 154 flow [2024-11-19 09:58:10,315 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 34 transitions, 89 flow [2024-11-19 09:58:10,316 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:58:10,317 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;@f2bb078, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:58:10,318 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-19 09:58:10,320 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:58:10,320 INFO L124 PetriNetUnfolderBase]: 1/16 cut-off events. [2024-11-19 09:58:10,320 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-19 09:58:10,320 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:58:10,320 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:58:10,321 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-19 09:58:10,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:58:10,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1189155245, now seen corresponding path program 1 times [2024-11-19 09:58:10,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:58:10,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934647146] [2024-11-19 09:58:10,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:58:10,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:58:10,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:58:10,357 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 09:58:10,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:58:10,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934647146] [2024-11-19 09:58:10,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934647146] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:58:10,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:58:10,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:58:10,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918686687] [2024-11-19 09:58:10,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:58:10,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:58:10,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:58:10,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:58:10,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:58:10,364 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-11-19 09:58:10,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 34 transitions, 89 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 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 09:58:10,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:58:10,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-11-19 09:58:10,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:58:10,560 INFO L124 PetriNetUnfolderBase]: 1695/2834 cut-off events. [2024-11-19 09:58:10,563 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2024-11-19 09:58:10,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5404 conditions, 2834 events. 1695/2834 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 16777 event pairs, 1331 based on Foata normal form. 207/2861 useless extension candidates. Maximal degree in co-relation 1466. Up to 2434 conditions per place. [2024-11-19 09:58:10,575 INFO L140 encePairwiseOnDemand]: 53/59 looper letters, 23 selfloop transitions, 3 changer transitions 0/35 dead transitions. [2024-11-19 09:58:10,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 35 transitions, 143 flow [2024-11-19 09:58:10,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:58:10,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:58:10,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2024-11-19 09:58:10,577 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3940677966101695 [2024-11-19 09:58:10,577 INFO L175 Difference]: Start difference. First operand has 41 places, 34 transitions, 89 flow. Second operand 4 states and 93 transitions. [2024-11-19 09:58:10,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 35 transitions, 143 flow [2024-11-19 09:58:10,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 35 transitions, 140 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-19 09:58:10,579 INFO L231 Difference]: Finished difference. Result has 43 places, 32 transitions, 94 flow [2024-11-19 09:58:10,579 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=94, PETRI_PLACES=43, PETRI_TRANSITIONS=32} [2024-11-19 09:58:10,580 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2024-11-19 09:58:10,584 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 94 flow [2024-11-19 09:58:10,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 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 09:58:10,585 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:58:10,585 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:58:10,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 09:58:10,585 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-19 09:58:10,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:58:10,586 INFO L85 PathProgramCache]: Analyzing trace with hash 2051008230, now seen corresponding path program 1 times [2024-11-19 09:58:10,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:58:10,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866332043] [2024-11-19 09:58:10,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:58:10,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:58:10,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:58:10,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:58:10,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:58:10,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866332043] [2024-11-19 09:58:10,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866332043] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:58:10,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:58:10,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 09:58:10,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275253778] [2024-11-19 09:58:10,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:58:10,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:58:10,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:58:10,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:58:10,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:58:10,627 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-11-19 09:58:10,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 09:58:10,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:58:10,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-11-19 09:58:10,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:58:10,808 INFO L124 PetriNetUnfolderBase]: 1695/2792 cut-off events. [2024-11-19 09:58:10,808 INFO L125 PetriNetUnfolderBase]: For 84/84 co-relation queries the response was YES. [2024-11-19 09:58:10,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5436 conditions, 2792 events. 1695/2792 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 16233 event pairs, 1578 based on Foata normal form. 0/2650 useless extension candidates. Maximal degree in co-relation 1965. Up to 2438 conditions per place. [2024-11-19 09:58:10,821 INFO L140 encePairwiseOnDemand]: 57/59 looper letters, 20 selfloop transitions, 1 changer transitions 1/31 dead transitions. [2024-11-19 09:58:10,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 31 transitions, 136 flow [2024-11-19 09:58:10,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:58:10,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:58:10,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2024-11-19 09:58:10,823 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3954802259887006 [2024-11-19 09:58:10,823 INFO L175 Difference]: Start difference. First operand has 43 places, 32 transitions, 94 flow. Second operand 3 states and 70 transitions. [2024-11-19 09:58:10,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 31 transitions, 136 flow [2024-11-19 09:58:10,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 31 transitions, 132 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:58:10,824 INFO L231 Difference]: Finished difference. Result has 42 places, 30 transitions, 88 flow [2024-11-19 09:58:10,824 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=42, PETRI_TRANSITIONS=30} [2024-11-19 09:58:10,825 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2024-11-19 09:58:10,825 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 30 transitions, 88 flow [2024-11-19 09:58:10,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 09:58:10,825 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:58:10,825 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:58:10,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 09:58:10,826 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-19 09:58:10,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:58:10,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1412657026, now seen corresponding path program 1 times [2024-11-19 09:58:10,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:58:10,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222172979] [2024-11-19 09:58:10,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:58:10,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:58:10,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:58:10,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:58:10,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:58:10,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222172979] [2024-11-19 09:58:10,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222172979] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:58:10,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:58:10,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 09:58:10,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64934854] [2024-11-19 09:58:10,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:58:10,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 09:58:10,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:58:10,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 09:58:10,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 09:58:10,897 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-11-19 09:58:10,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 30 transitions, 88 flow. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 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 09:58:10,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:58:10,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-11-19 09:58:10,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:58:11,166 INFO L124 PetriNetUnfolderBase]: 2541/4001 cut-off events. [2024-11-19 09:58:11,166 INFO L125 PetriNetUnfolderBase]: For 83/83 co-relation queries the response was YES. [2024-11-19 09:58:11,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7839 conditions, 4001 events. 2541/4001 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 23499 event pairs, 1296 based on Foata normal form. 0/3619 useless extension candidates. Maximal degree in co-relation 7829. Up to 2039 conditions per place. [2024-11-19 09:58:11,183 INFO L140 encePairwiseOnDemand]: 53/59 looper letters, 27 selfloop transitions, 3 changer transitions 19/57 dead transitions. [2024-11-19 09:58:11,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 57 transitions, 240 flow [2024-11-19 09:58:11,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 09:58:11,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 09:58:11,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-11-19 09:58:11,186 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4096045197740113 [2024-11-19 09:58:11,186 INFO L175 Difference]: Start difference. First operand has 42 places, 30 transitions, 88 flow. Second operand 6 states and 145 transitions. [2024-11-19 09:58:11,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 57 transitions, 240 flow [2024-11-19 09:58:11,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 57 transitions, 239 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:58:11,187 INFO L231 Difference]: Finished difference. Result has 47 places, 30 transitions, 101 flow [2024-11-19 09:58:11,187 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=101, PETRI_PLACES=47, PETRI_TRANSITIONS=30} [2024-11-19 09:58:11,188 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 6 predicate places. [2024-11-19 09:58:11,188 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 30 transitions, 101 flow [2024-11-19 09:58:11,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 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 09:58:11,188 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:58:11,188 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:58:11,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 09:58:11,190 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-19 09:58:11,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:58:11,190 INFO L85 PathProgramCache]: Analyzing trace with hash -493844980, now seen corresponding path program 1 times [2024-11-19 09:58:11,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:58:11,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773668814] [2024-11-19 09:58:11,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:58:11,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:58:11,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:58:11,201 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 09:58:11,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:58:11,213 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 09:58:11,215 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 09:58:11,215 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-11-19 09:58:11,216 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (5 of 7 remaining) [2024-11-19 09:58:11,216 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2024-11-19 09:58:11,218 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 7 remaining) [2024-11-19 09:58:11,218 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 7 remaining) [2024-11-19 09:58:11,218 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 7 remaining) [2024-11-19 09:58:11,219 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-19 09:58:11,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 09:58:11,219 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-19 09:58:11,219 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 09:58:11,219 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-19 09:58:11,250 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 09:58:11,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 75 transitions, 206 flow [2024-11-19 09:58:11,256 INFO L124 PetriNetUnfolderBase]: 15/109 cut-off events. [2024-11-19 09:58:11,256 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-19 09:58:11,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 109 events. 15/109 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 374 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 133. Up to 10 conditions per place. [2024-11-19 09:58:11,257 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 75 transitions, 206 flow [2024-11-19 09:58:11,257 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 38 transitions, 107 flow [2024-11-19 09:58:11,259 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:58:11,260 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;@f2bb078, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:58:11,260 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-19 09:58:11,262 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:58:11,264 INFO L124 PetriNetUnfolderBase]: 1/16 cut-off events. [2024-11-19 09:58:11,264 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-19 09:58:11,264 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:58:11,264 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:58:11,264 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-19 09:58:11,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:58:11,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1127082291, now seen corresponding path program 1 times [2024-11-19 09:58:11,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:58:11,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051154648] [2024-11-19 09:58:11,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:58:11,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:58:11,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:58:11,297 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 09:58:11,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:58:11,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051154648] [2024-11-19 09:58:11,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051154648] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:58:11,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:58:11,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:58:11,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934625669] [2024-11-19 09:58:11,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:58:11,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:58:11,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:58:11,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:58:11,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:58:11,303 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 75 [2024-11-19 09:58:11,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 107 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 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 09:58:11,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:58:11,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 75 [2024-11-19 09:58:11,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:58:11,925 INFO L124 PetriNetUnfolderBase]: 6636/10115 cut-off events. [2024-11-19 09:58:11,926 INFO L125 PetriNetUnfolderBase]: For 501/501 co-relation queries the response was YES. [2024-11-19 09:58:11,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19463 conditions, 10115 events. 6636/10115 cut-off events. For 501/501 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 64220 event pairs, 5516 based on Foata normal form. 693/10277 useless extension candidates. Maximal degree in co-relation 5468. Up to 8914 conditions per place. [2024-11-19 09:58:11,978 INFO L140 encePairwiseOnDemand]: 69/75 looper letters, 26 selfloop transitions, 3 changer transitions 0/39 dead transitions. [2024-11-19 09:58:11,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 39 transitions, 167 flow [2024-11-19 09:58:11,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:58:11,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:58:11,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2024-11-19 09:58:11,980 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37333333333333335 [2024-11-19 09:58:11,980 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 107 flow. Second operand 4 states and 112 transitions. [2024-11-19 09:58:11,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 39 transitions, 167 flow [2024-11-19 09:58:11,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 39 transitions, 160 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-19 09:58:11,984 INFO L231 Difference]: Finished difference. Result has 49 places, 36 transitions, 108 flow [2024-11-19 09:58:11,984 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=108, PETRI_PLACES=49, PETRI_TRANSITIONS=36} [2024-11-19 09:58:11,985 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 2 predicate places. [2024-11-19 09:58:11,985 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 36 transitions, 108 flow [2024-11-19 09:58:11,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 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 09:58:11,985 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:58:11,985 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:58:11,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 09:58:11,986 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-19 09:58:11,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:58:11,986 INFO L85 PathProgramCache]: Analyzing trace with hash 106936007, now seen corresponding path program 1 times [2024-11-19 09:58:11,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:58:11,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938802420] [2024-11-19 09:58:11,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:58:11,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:58:11,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:58:12,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:58:12,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:58:12,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938802420] [2024-11-19 09:58:12,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938802420] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:58:12,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:58:12,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 09:58:12,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876476375] [2024-11-19 09:58:12,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:58:12,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:58:12,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:58:12,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:58:12,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:58:12,009 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 75 [2024-11-19 09:58:12,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 36 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 09:58:12,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:58:12,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 75 [2024-11-19 09:58:12,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:58:12,543 INFO L124 PetriNetUnfolderBase]: 6636/10021 cut-off events. [2024-11-19 09:58:12,543 INFO L125 PetriNetUnfolderBase]: For 396/396 co-relation queries the response was YES. [2024-11-19 09:58:12,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19551 conditions, 10021 events. 6636/10021 cut-off events. For 396/396 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 63167 event pairs, 6276 based on Foata normal form. 0/9609 useless extension candidates. Maximal degree in co-relation 19514. Up to 8918 conditions per place. [2024-11-19 09:58:12,636 INFO L140 encePairwiseOnDemand]: 73/75 looper letters, 23 selfloop transitions, 1 changer transitions 1/35 dead transitions. [2024-11-19 09:58:12,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 35 transitions, 156 flow [2024-11-19 09:58:12,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:58:12,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:58:12,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2024-11-19 09:58:12,637 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37777777777777777 [2024-11-19 09:58:12,637 INFO L175 Difference]: Start difference. First operand has 49 places, 36 transitions, 108 flow. Second operand 3 states and 85 transitions. [2024-11-19 09:58:12,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 35 transitions, 156 flow [2024-11-19 09:58:12,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 35 transitions, 152 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:58:12,639 INFO L231 Difference]: Finished difference. Result has 48 places, 34 transitions, 102 flow [2024-11-19 09:58:12,639 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=48, PETRI_TRANSITIONS=34} [2024-11-19 09:58:12,640 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 1 predicate places. [2024-11-19 09:58:12,640 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 34 transitions, 102 flow [2024-11-19 09:58:12,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 09:58:12,640 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:58:12,640 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:58:12,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 09:58:12,641 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-19 09:58:12,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:58:12,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1090484358, now seen corresponding path program 1 times [2024-11-19 09:58:12,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:58:12,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888971044] [2024-11-19 09:58:12,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:58:12,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:58:12,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:58:12,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:58:12,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:58:12,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888971044] [2024-11-19 09:58:12,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888971044] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:58:12,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:58:12,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 09:58:12,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934679334] [2024-11-19 09:58:12,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:58:12,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 09:58:12,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:58:12,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 09:58:12,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 09:58:12,732 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 75 [2024-11-19 09:58:12,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 34 transitions, 102 flow. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 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 09:58:12,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:58:12,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 75 [2024-11-19 09:58:12,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:58:13,533 INFO L124 PetriNetUnfolderBase]: 9912/14254 cut-off events. [2024-11-19 09:58:13,533 INFO L125 PetriNetUnfolderBase]: For 395/395 co-relation queries the response was YES. [2024-11-19 09:58:13,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28137 conditions, 14254 events. 9912/14254 cut-off events. For 395/395 co-relation queries the response was YES. Maximal size of possible extension queue 722. Compared 88698 event pairs, 5184 based on Foata normal form. 0/13143 useless extension candidates. Maximal degree in co-relation 28126. Up to 7466 conditions per place. [2024-11-19 09:58:13,580 INFO L140 encePairwiseOnDemand]: 69/75 looper letters, 32 selfloop transitions, 3 changer transitions 23/67 dead transitions. [2024-11-19 09:58:13,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 67 transitions, 284 flow [2024-11-19 09:58:13,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 09:58:13,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 09:58:13,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 178 transitions. [2024-11-19 09:58:13,582 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39555555555555555 [2024-11-19 09:58:13,582 INFO L175 Difference]: Start difference. First operand has 48 places, 34 transitions, 102 flow. Second operand 6 states and 178 transitions. [2024-11-19 09:58:13,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 67 transitions, 284 flow [2024-11-19 09:58:13,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 67 transitions, 283 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:58:13,584 INFO L231 Difference]: Finished difference. Result has 53 places, 34 transitions, 115 flow [2024-11-19 09:58:13,584 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=115, PETRI_PLACES=53, PETRI_TRANSITIONS=34} [2024-11-19 09:58:13,584 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 6 predicate places. [2024-11-19 09:58:13,584 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 34 transitions, 115 flow [2024-11-19 09:58:13,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 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 09:58:13,584 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:58:13,585 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:58:13,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 09:58:13,585 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-19 09:58:13,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:58:13,585 INFO L85 PathProgramCache]: Analyzing trace with hash 553737655, now seen corresponding path program 1 times [2024-11-19 09:58:13,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:58:13,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410321329] [2024-11-19 09:58:13,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:58:13,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:58:13,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:58:13,634 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 09:58:13,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:58:13,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410321329] [2024-11-19 09:58:13,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410321329] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:58:13,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875639276] [2024-11-19 09:58:13,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:58:13,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:58:13,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:58:13,639 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 09:58:13,640 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 09:58:13,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:58:13,712 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 09:58:13,713 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:58:13,754 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 09:58:13,755 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:58:13,778 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 09:58:13,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875639276] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:58:13,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:58:13,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-19 09:58:13,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579808392] [2024-11-19 09:58:13,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:58:13,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 09:58:13,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:58:13,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 09:58:13,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-11-19 09:58:13,789 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 75 [2024-11-19 09:58:13,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 34 transitions, 115 flow. Second operand has 10 states, 10 states have (on average 22.2) internal successors, (222), 10 states have internal predecessors, (222), 0 states have call successors, (0), 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 09:58:13,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:58:13,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 75 [2024-11-19 09:58:13,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:58:14,271 INFO L124 PetriNetUnfolderBase]: 5119/7386 cut-off events. [2024-11-19 09:58:14,272 INFO L125 PetriNetUnfolderBase]: For 1290/1290 co-relation queries the response was YES. [2024-11-19 09:58:14,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16117 conditions, 7386 events. 5119/7386 cut-off events. For 1290/1290 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 40355 event pairs, 777 based on Foata normal form. 39/7182 useless extension candidates. Maximal degree in co-relation 16103. Up to 5941 conditions per place. [2024-11-19 09:58:14,300 INFO L140 encePairwiseOnDemand]: 70/75 looper letters, 45 selfloop transitions, 7 changer transitions 0/60 dead transitions. [2024-11-19 09:58:14,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 60 transitions, 275 flow [2024-11-19 09:58:14,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 09:58:14,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 09:58:14,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 194 transitions. [2024-11-19 09:58:14,301 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36952380952380953 [2024-11-19 09:58:14,301 INFO L175 Difference]: Start difference. First operand has 53 places, 34 transitions, 115 flow. Second operand 7 states and 194 transitions. [2024-11-19 09:58:14,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 60 transitions, 275 flow [2024-11-19 09:58:14,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 60 transitions, 267 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-19 09:58:14,332 INFO L231 Difference]: Finished difference. Result has 57 places, 37 transitions, 150 flow [2024-11-19 09:58:14,332 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=150, PETRI_PLACES=57, PETRI_TRANSITIONS=37} [2024-11-19 09:58:14,332 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 10 predicate places. [2024-11-19 09:58:14,332 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 37 transitions, 150 flow [2024-11-19 09:58:14,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.2) internal successors, (222), 10 states have internal predecessors, (222), 0 states have call successors, (0), 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 09:58:14,333 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:58:14,333 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:58:14,345 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 09:58:14,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-19 09:58:14,538 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-19 09:58:14,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:58:14,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1201556913, now seen corresponding path program 1 times [2024-11-19 09:58:14,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:58:14,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897493200] [2024-11-19 09:58:14,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:58:14,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:58:14,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:58:14,549 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 09:58:14,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:58:14,559 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 09:58:14,563 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 09:58:14,563 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2024-11-19 09:58:14,563 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (6 of 8 remaining) [2024-11-19 09:58:14,563 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 8 remaining) [2024-11-19 09:58:14,564 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 8 remaining) [2024-11-19 09:58:14,564 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 8 remaining) [2024-11-19 09:58:14,564 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2024-11-19 09:58:14,564 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 8 remaining) [2024-11-19 09:58:14,564 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 8 remaining) [2024-11-19 09:58:14,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 09:58:14,564 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-19 09:58:14,565 WARN L244 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 09:58:14,565 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-11-19 09:58:14,595 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 09:58:14,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 91 transitions, 262 flow [2024-11-19 09:58:14,603 INFO L124 PetriNetUnfolderBase]: 18/131 cut-off events. [2024-11-19 09:58:14,603 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-19 09:58:14,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 131 events. 18/131 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 468 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 163. Up to 12 conditions per place. [2024-11-19 09:58:14,604 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 91 transitions, 262 flow [2024-11-19 09:58:14,604 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 42 transitions, 127 flow [2024-11-19 09:58:14,605 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:58:14,605 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;@f2bb078, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:58:14,605 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-11-19 09:58:14,607 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:58:14,607 INFO L124 PetriNetUnfolderBase]: 1/16 cut-off events. [2024-11-19 09:58:14,607 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-19 09:58:14,607 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:58:14,607 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:58:14,607 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-19 09:58:14,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:58:14,608 INFO L85 PathProgramCache]: Analyzing trace with hash 723482967, now seen corresponding path program 1 times [2024-11-19 09:58:14,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:58:14,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190404422] [2024-11-19 09:58:14,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:58:14,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:58:14,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:58:14,638 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 09:58:14,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:58:14,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190404422] [2024-11-19 09:58:14,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190404422] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:58:14,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:58:14,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:58:14,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79659678] [2024-11-19 09:58:14,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:58:14,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:58:14,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:58:14,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:58:14,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:58:14,645 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 91 [2024-11-19 09:58:14,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 42 transitions, 127 flow. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:58:14,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:58:14,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 91 [2024-11-19 09:58:14,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:58:16,437 INFO L124 PetriNetUnfolderBase]: 24537/35036 cut-off events. [2024-11-19 09:58:16,438 INFO L125 PetriNetUnfolderBase]: For 2388/2388 co-relation queries the response was YES. [2024-11-19 09:58:16,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67875 conditions, 35036 events. 24537/35036 cut-off events. For 2388/2388 co-relation queries the response was YES. Maximal size of possible extension queue 1497. Compared 234457 event pairs, 18852 based on Foata normal form. 2151/35603 useless extension candidates. Maximal degree in co-relation 19553. Up to 31432 conditions per place. [2024-11-19 09:58:16,591 INFO L140 encePairwiseOnDemand]: 85/91 looper letters, 29 selfloop transitions, 3 changer transitions 0/43 dead transitions. [2024-11-19 09:58:16,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 43 transitions, 193 flow [2024-11-19 09:58:16,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:58:16,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:58:16,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2024-11-19 09:58:16,593 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3598901098901099 [2024-11-19 09:58:16,593 INFO L175 Difference]: Start difference. First operand has 53 places, 42 transitions, 127 flow. Second operand 4 states and 131 transitions. [2024-11-19 09:58:16,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 43 transitions, 193 flow [2024-11-19 09:58:16,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 43 transitions, 180 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-19 09:58:16,603 INFO L231 Difference]: Finished difference. Result has 55 places, 40 transitions, 122 flow [2024-11-19 09:58:16,603 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=55, PETRI_TRANSITIONS=40} [2024-11-19 09:58:16,604 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 2 predicate places. [2024-11-19 09:58:16,604 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 40 transitions, 122 flow [2024-11-19 09:58:16,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:58:16,604 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:58:16,604 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:58:16,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 09:58:16,605 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-19 09:58:16,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:58:16,605 INFO L85 PathProgramCache]: Analyzing trace with hash 67801256, now seen corresponding path program 1 times [2024-11-19 09:58:16,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:58:16,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052096784] [2024-11-19 09:58:16,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:58:16,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:58:16,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:58:16,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:58:16,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:58:16,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052096784] [2024-11-19 09:58:16,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052096784] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:58:16,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:58:16,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 09:58:16,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892359721] [2024-11-19 09:58:16,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:58:16,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:58:16,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:58:16,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:58:16,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:58:16,629 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 91 [2024-11-19 09:58:16,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 40 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 09:58:16,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:58:16,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 91 [2024-11-19 09:58:16,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:58:18,569 INFO L124 PetriNetUnfolderBase]: 24537/34780 cut-off events. [2024-11-19 09:58:18,569 INFO L125 PetriNetUnfolderBase]: For 1557/1557 co-relation queries the response was YES. [2024-11-19 09:58:18,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68044 conditions, 34780 events. 24537/34780 cut-off events. For 1557/1557 co-relation queries the response was YES. Maximal size of possible extension queue 1517. Compared 230540 event pairs, 23448 based on Foata normal form. 0/33558 useless extension candidates. Maximal degree in co-relation 68006. Up to 31436 conditions per place. [2024-11-19 09:58:18,684 INFO L140 encePairwiseOnDemand]: 89/91 looper letters, 26 selfloop transitions, 1 changer transitions 1/39 dead transitions. [2024-11-19 09:58:18,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 39 transitions, 176 flow [2024-11-19 09:58:18,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:58:18,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:58:18,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 100 transitions. [2024-11-19 09:58:18,685 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3663003663003663 [2024-11-19 09:58:18,685 INFO L175 Difference]: Start difference. First operand has 55 places, 40 transitions, 122 flow. Second operand 3 states and 100 transitions. [2024-11-19 09:58:18,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 39 transitions, 176 flow [2024-11-19 09:58:18,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 39 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:58:18,687 INFO L231 Difference]: Finished difference. Result has 54 places, 38 transitions, 116 flow [2024-11-19 09:58:18,687 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=54, PETRI_TRANSITIONS=38} [2024-11-19 09:58:18,687 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 1 predicate places. [2024-11-19 09:58:18,687 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 38 transitions, 116 flow [2024-11-19 09:58:18,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 09:58:18,688 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:58:18,688 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:58:18,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 09:58:18,688 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-19 09:58:18,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:58:18,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1259211681, now seen corresponding path program 1 times [2024-11-19 09:58:18,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:58:18,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516205515] [2024-11-19 09:58:18,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:58:18,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:58:18,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:58:18,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:58:18,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:58:18,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516205515] [2024-11-19 09:58:18,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516205515] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:58:18,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:58:18,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 09:58:18,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102464121] [2024-11-19 09:58:18,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:58:18,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 09:58:18,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:58:18,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 09:58:18,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 09:58:18,735 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 91 [2024-11-19 09:58:18,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 38 transitions, 116 flow. Second operand has 5 states, 5 states have (on average 25.8) internal successors, (129), 5 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 09:58:18,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:58:18,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 91 [2024-11-19 09:58:18,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:58:21,238 INFO L124 PetriNetUnfolderBase]: 36561/49543 cut-off events. [2024-11-19 09:58:21,238 INFO L125 PetriNetUnfolderBase]: For 1556/1556 co-relation queries the response was YES. [2024-11-19 09:58:21,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98095 conditions, 49543 events. 36561/49543 cut-off events. For 1556/1556 co-relation queries the response was YES. Maximal size of possible extension queue 2082. Compared 316741 event pairs, 19440 based on Foata normal form. 0/46245 useless extension candidates. Maximal degree in co-relation 98083. Up to 26339 conditions per place. [2024-11-19 09:58:21,402 INFO L140 encePairwiseOnDemand]: 85/91 looper letters, 37 selfloop transitions, 3 changer transitions 27/77 dead transitions. [2024-11-19 09:58:21,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 77 transitions, 328 flow [2024-11-19 09:58:21,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 09:58:21,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 09:58:21,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 211 transitions. [2024-11-19 09:58:21,403 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38644688644688646 [2024-11-19 09:58:21,404 INFO L175 Difference]: Start difference. First operand has 54 places, 38 transitions, 116 flow. Second operand 6 states and 211 transitions. [2024-11-19 09:58:21,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 77 transitions, 328 flow [2024-11-19 09:58:21,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 77 transitions, 327 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:58:21,407 INFO L231 Difference]: Finished difference. Result has 59 places, 38 transitions, 129 flow [2024-11-19 09:58:21,408 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=129, PETRI_PLACES=59, PETRI_TRANSITIONS=38} [2024-11-19 09:58:21,408 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 6 predicate places. [2024-11-19 09:58:21,408 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 38 transitions, 129 flow [2024-11-19 09:58:21,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 5 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 09:58:21,409 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:58:21,409 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:58:21,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-19 09:58:21,409 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-19 09:58:21,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:58:21,410 INFO L85 PathProgramCache]: Analyzing trace with hash 379870904, now seen corresponding path program 1 times [2024-11-19 09:58:21,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:58:21,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450661548] [2024-11-19 09:58:21,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:58:21,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:58:21,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:58:21,462 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 09:58:21,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:58:21,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450661548] [2024-11-19 09:58:21,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450661548] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:58:21,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354589253] [2024-11-19 09:58:21,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:58:21,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:58:21,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:58:21,466 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 09:58:21,469 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 09:58:21,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:58:21,545 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 09:58:21,545 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:58:21,576 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 09:58:21,576 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:58:21,599 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 09:58:21,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354589253] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:58:21,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:58:21,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-19 09:58:21,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60995257] [2024-11-19 09:58:21,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:58:21,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 09:58:21,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:58:21,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 09:58:21,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-11-19 09:58:21,611 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 91 [2024-11-19 09:58:21,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 38 transitions, 129 flow. Second operand has 10 states, 10 states have (on average 26.2) internal successors, (262), 10 states have internal predecessors, (262), 0 states have call successors, (0), 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 09:58:21,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:58:21,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 91 [2024-11-19 09:58:21,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:58:23,223 INFO L124 PetriNetUnfolderBase]: 23020/31605 cut-off events. [2024-11-19 09:58:23,223 INFO L125 PetriNetUnfolderBase]: For 6046/6046 co-relation queries the response was YES. [2024-11-19 09:58:23,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68444 conditions, 31605 events. 23020/31605 cut-off events. For 6046/6046 co-relation queries the response was YES. Maximal size of possible extension queue 1284. Compared 188898 event pairs, 5983 based on Foata normal form. 39/30672 useless extension candidates. Maximal degree in co-relation 68429. Up to 26515 conditions per place. [2024-11-19 09:58:23,383 INFO L140 encePairwiseOnDemand]: 86/91 looper letters, 50 selfloop transitions, 7 changer transitions 0/66 dead transitions. [2024-11-19 09:58:23,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 66 transitions, 303 flow [2024-11-19 09:58:23,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 09:58:23,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 09:58:23,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 227 transitions. [2024-11-19 09:58:23,384 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3563579277864992 [2024-11-19 09:58:23,384 INFO L175 Difference]: Start difference. First operand has 59 places, 38 transitions, 129 flow. Second operand 7 states and 227 transitions. [2024-11-19 09:58:23,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 66 transitions, 303 flow [2024-11-19 09:58:23,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 66 transitions, 295 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-19 09:58:23,722 INFO L231 Difference]: Finished difference. Result has 63 places, 41 transitions, 164 flow [2024-11-19 09:58:23,722 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=164, PETRI_PLACES=63, PETRI_TRANSITIONS=41} [2024-11-19 09:58:23,723 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 10 predicate places. [2024-11-19 09:58:23,723 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 41 transitions, 164 flow [2024-11-19 09:58:23,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 26.2) internal successors, (262), 10 states have internal predecessors, (262), 0 states have call successors, (0), 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 09:58:23,723 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:58:23,723 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:58:23,735 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 09:58:23,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-19 09:58:23,923 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-19 09:58:23,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:58:23,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1332664853, now seen corresponding path program 1 times [2024-11-19 09:58:23,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:58:23,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168629118] [2024-11-19 09:58:23,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:58:23,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:58:23,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:58:23,932 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 09:58:23,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:58:23,943 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 09:58:23,945 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 09:58:23,945 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2024-11-19 09:58:23,945 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (7 of 9 remaining) [2024-11-19 09:58:23,945 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 9 remaining) [2024-11-19 09:58:23,945 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 9 remaining) [2024-11-19 09:58:23,945 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 9 remaining) [2024-11-19 09:58:23,946 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 9 remaining) [2024-11-19 09:58:23,946 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 9 remaining) [2024-11-19 09:58:23,946 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 9 remaining) [2024-11-19 09:58:23,946 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 9 remaining) [2024-11-19 09:58:23,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-19 09:58:23,946 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-19 09:58:23,947 WARN L244 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 09:58:23,947 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2024-11-19 09:58:23,977 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 09:58:23,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 107 transitions, 322 flow [2024-11-19 09:58:23,984 INFO L124 PetriNetUnfolderBase]: 21/153 cut-off events. [2024-11-19 09:58:23,984 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-11-19 09:58:23,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 153 events. 21/153 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 546 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 194. Up to 14 conditions per place. [2024-11-19 09:58:23,985 INFO L82 GeneralOperation]: Start removeDead. Operand has 115 places, 107 transitions, 322 flow [2024-11-19 09:58:23,986 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 46 transitions, 149 flow [2024-11-19 09:58:23,986 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:58:23,986 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;@f2bb078, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:58:23,987 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-11-19 09:58:23,987 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:58:23,989 INFO L124 PetriNetUnfolderBase]: 1/16 cut-off events. [2024-11-19 09:58:23,989 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-19 09:58:23,989 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:58:23,989 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:58:23,989 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 7 more)] === [2024-11-19 09:58:23,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:58:23,989 INFO L85 PathProgramCache]: Analyzing trace with hash 67573233, now seen corresponding path program 1 times [2024-11-19 09:58:23,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:58:23,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733202185] [2024-11-19 09:58:23,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:58:23,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:58:23,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:58:24,012 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 09:58:24,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:58:24,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733202185] [2024-11-19 09:58:24,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733202185] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:58:24,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:58:24,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:58:24,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586851020] [2024-11-19 09:58:24,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:58:24,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:58:24,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:58:24,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:58:24,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:58:24,015 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 107 [2024-11-19 09:58:24,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 46 transitions, 149 flow. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 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 09:58:24,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:58:24,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 107 [2024-11-19 09:58:24,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:58:30,150 INFO L124 PetriNetUnfolderBase]: 87474/119045 cut-off events. [2024-11-19 09:58:30,150 INFO L125 PetriNetUnfolderBase]: For 10353/10353 co-relation queries the response was YES. [2024-11-19 09:58:30,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231832 conditions, 119045 events. 87474/119045 cut-off events. For 10353/10353 co-relation queries the response was YES. Maximal size of possible extension queue 4479. Compared 824190 event pairs, 77282 based on Foata normal form. 6525/120824 useless extension candidates. Maximal degree in co-relation 68049. Up to 108220 conditions per place. [2024-11-19 09:58:30,639 INFO L140 encePairwiseOnDemand]: 101/107 looper letters, 32 selfloop transitions, 3 changer transitions 0/47 dead transitions. [2024-11-19 09:58:30,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 47 transitions, 221 flow [2024-11-19 09:58:30,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:58:30,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:58:30,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 150 transitions. [2024-11-19 09:58:30,640 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35046728971962615 [2024-11-19 09:58:30,640 INFO L175 Difference]: Start difference. First operand has 59 places, 46 transitions, 149 flow. Second operand 4 states and 150 transitions. [2024-11-19 09:58:30,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 47 transitions, 221 flow [2024-11-19 09:58:30,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 47 transitions, 200 flow, removed 10 selfloop flow, removed 1 redundant places. [2024-11-19 09:58:30,698 INFO L231 Difference]: Finished difference. Result has 61 places, 44 transitions, 136 flow [2024-11-19 09:58:30,698 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=61, PETRI_TRANSITIONS=44} [2024-11-19 09:58:30,698 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, 2 predicate places. [2024-11-19 09:58:30,698 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 44 transitions, 136 flow [2024-11-19 09:58:30,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 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 09:58:30,699 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:58:30,699 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:58:30,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-19 09:58:30,699 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 7 more)] === [2024-11-19 09:58:30,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:58:30,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1933603977, now seen corresponding path program 1 times [2024-11-19 09:58:30,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:58:30,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227906020] [2024-11-19 09:58:30,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:58:30,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:58:30,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:58:30,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:58:30,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:58:30,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227906020] [2024-11-19 09:58:30,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227906020] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:58:30,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:58:30,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 09:58:30,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100699981] [2024-11-19 09:58:30,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:58:30,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:58:30,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:58:30,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:58:30,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:58:30,715 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 107 [2024-11-19 09:58:30,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 44 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 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 09:58:30,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:58:30,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 107 [2024-11-19 09:58:30,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:58:37,055 INFO L124 PetriNetUnfolderBase]: 87474/118303 cut-off events. [2024-11-19 09:58:37,055 INFO L125 PetriNetUnfolderBase]: For 5949/5949 co-relation queries the response was YES. [2024-11-19 09:58:37,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 232001 conditions, 118303 events. 87474/118303 cut-off events. For 5949/5949 co-relation queries the response was YES. Maximal size of possible extension queue 4425. Compared 807896 event pairs, 84198 based on Foata normal form. 0/114648 useless extension candidates. Maximal degree in co-relation 231962. Up to 108224 conditions per place. [2024-11-19 09:58:37,709 INFO L140 encePairwiseOnDemand]: 105/107 looper letters, 29 selfloop transitions, 1 changer transitions 1/43 dead transitions. [2024-11-19 09:58:37,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 43 transitions, 196 flow [2024-11-19 09:58:37,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:58:37,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:58:37,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2024-11-19 09:58:37,711 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3582554517133956 [2024-11-19 09:58:37,711 INFO L175 Difference]: Start difference. First operand has 61 places, 44 transitions, 136 flow. Second operand 3 states and 115 transitions. [2024-11-19 09:58:37,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 43 transitions, 196 flow [2024-11-19 09:58:37,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 43 transitions, 192 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:58:37,720 INFO L231 Difference]: Finished difference. Result has 60 places, 42 transitions, 130 flow [2024-11-19 09:58:37,720 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=60, PETRI_TRANSITIONS=42} [2024-11-19 09:58:37,721 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, 1 predicate places. [2024-11-19 09:58:37,721 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 42 transitions, 130 flow [2024-11-19 09:58:37,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 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 09:58:37,721 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:58:37,721 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:58:37,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-19 09:58:37,721 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 7 more)] === [2024-11-19 09:58:37,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:58:37,722 INFO L85 PathProgramCache]: Analyzing trace with hash -86200029, now seen corresponding path program 1 times [2024-11-19 09:58:37,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:58:37,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721238425] [2024-11-19 09:58:37,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:58:37,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:58:37,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:58:37,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:58:37,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:58:37,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721238425] [2024-11-19 09:58:37,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721238425] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:58:37,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:58:37,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 09:58:37,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111709505] [2024-11-19 09:58:37,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:58:37,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 09:58:37,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:58:37,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 09:58:37,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 09:58:37,770 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 107 [2024-11-19 09:58:37,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 42 transitions, 130 flow. Second operand has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 0 states have call successors, (0), 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 09:58:37,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:58:37,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 107 [2024-11-19 09:58:37,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand