./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/bench-exp1x3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/bench-exp1x3.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 52eeb5cce5645e9dacc261319eae3d665b5cc432ff3ddd2ef39502a44996e68d --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 10:44:48,919 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 10:44:48,993 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-09 10:44:49,001 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 10:44:49,002 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 10:44:49,035 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 10:44:49,036 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 10:44:49,036 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 10:44:49,037 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 10:44:49,037 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 10:44:49,037 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 10:44:49,038 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 10:44:49,038 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 10:44:49,038 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 10:44:49,039 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 10:44:49,041 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 10:44:49,042 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 10:44:49,044 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 10:44:49,044 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 10:44:49,044 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 10:44:49,044 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 10:44:49,045 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 10:44:49,045 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 10:44:49,045 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 10:44:49,045 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 10:44:49,046 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 10:44:49,046 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 10:44:49,046 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 10:44:49,046 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 10:44:49,047 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 10:44:49,047 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 10:44:49,049 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 10:44:49,050 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 10:44:49,050 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:44:49,050 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 10:44:49,050 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 10:44:49,050 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 10:44:49,051 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 10:44:49,051 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 10:44:49,051 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 10:44:49,051 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 10:44:49,052 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 10:44:49,052 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52eeb5cce5645e9dacc261319eae3d665b5cc432ff3ddd2ef39502a44996e68d [2024-11-09 10:44:49,309 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 10:44:49,338 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 10:44:49,342 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 10:44:49,343 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 10:44:49,344 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 10:44:49,345 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/bench-exp1x3.wvr.c [2024-11-09 10:44:50,818 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 10:44:51,004 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 10:44:51,005 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp1x3.wvr.c [2024-11-09 10:44:51,011 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44bd95e8d/a2c10159f4a94c248fec9c537e545bb8/FLAG2dc6ae973 [2024-11-09 10:44:51,386 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44bd95e8d/a2c10159f4a94c248fec9c537e545bb8 [2024-11-09 10:44:51,389 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 10:44:51,390 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 10:44:51,391 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 10:44:51,392 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 10:44:51,397 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 10:44:51,398 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:44:51" (1/1) ... [2024-11-09 10:44:51,399 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@585e9bbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:51, skipping insertion in model container [2024-11-09 10:44:51,399 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:44:51" (1/1) ... [2024-11-09 10:44:51,420 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 10:44:51,639 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:44:51,651 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 10:44:51,670 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:44:51,696 INFO L204 MainTranslator]: Completed translation [2024-11-09 10:44:51,696 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:51 WrapperNode [2024-11-09 10:44:51,697 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 10:44:51,698 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 10:44:51,698 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 10:44:51,698 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 10:44:51,705 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:51" (1/1) ... [2024-11-09 10:44:51,715 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:51" (1/1) ... [2024-11-09 10:44:51,734 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 49 [2024-11-09 10:44:51,735 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 10:44:51,736 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 10:44:51,737 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 10:44:51,737 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 10:44:51,747 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:51" (1/1) ... [2024-11-09 10:44:51,748 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:51" (1/1) ... [2024-11-09 10:44:51,751 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:51" (1/1) ... [2024-11-09 10:44:51,769 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-09 10:44:51,769 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:51" (1/1) ... [2024-11-09 10:44:51,769 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:51" (1/1) ... [2024-11-09 10:44:51,772 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:51" (1/1) ... [2024-11-09 10:44:51,776 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:51" (1/1) ... [2024-11-09 10:44:51,777 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:51" (1/1) ... [2024-11-09 10:44:51,778 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:51" (1/1) ... [2024-11-09 10:44:51,779 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 10:44:51,780 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 10:44:51,780 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 10:44:51,780 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 10:44:51,781 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:51" (1/1) ... [2024-11-09 10:44:51,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:44:51,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:44:51,827 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 10:44:51,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 10:44:51,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 10:44:51,878 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 10:44:51,878 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 10:44:51,878 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 10:44:51,878 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 10:44:51,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 10:44:51,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 10:44:51,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 10:44:51,880 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 10:44:51,982 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 10:44:51,985 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 10:44:52,172 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 10:44:52,175 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 10:44:52,309 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 10:44:52,309 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 10:44:52,310 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:44:52 BoogieIcfgContainer [2024-11-09 10:44:52,310 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 10:44:52,312 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 10:44:52,313 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 10:44:52,316 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 10:44:52,317 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:44:51" (1/3) ... [2024-11-09 10:44:52,318 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@291ac510 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:44:52, skipping insertion in model container [2024-11-09 10:44:52,318 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:51" (2/3) ... [2024-11-09 10:44:52,319 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@291ac510 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:44:52, skipping insertion in model container [2024-11-09 10:44:52,319 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:44:52" (3/3) ... [2024-11-09 10:44:52,320 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp1x3.wvr.c [2024-11-09 10:44:52,337 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 10:44:52,338 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-09 10:44:52,338 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 10:44:52,398 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-09 10:44:52,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 25 places, 20 transitions, 54 flow [2024-11-09 10:44:52,455 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2024-11-09 10:44:52,455 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 10:44:52,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 18 events. 2/18 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 10 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2024-11-09 10:44:52,460 INFO L82 GeneralOperation]: Start removeDead. Operand has 25 places, 20 transitions, 54 flow [2024-11-09 10:44:52,464 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 22 places, 17 transitions, 46 flow [2024-11-09 10:44:52,473 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:44:52,482 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;@46dfe95f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:44:52,482 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-09 10:44:52,495 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 10:44:52,495 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2024-11-09 10:44:52,496 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 10:44:52,496 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:44:52,496 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:44:52,497 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:44:52,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:44:52,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1801486480, now seen corresponding path program 1 times [2024-11-09 10:44:52,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:44:52,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854472348] [2024-11-09 10:44:52,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:44:52,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:44:52,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:44:52,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:44:52,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:44:52,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854472348] [2024-11-09 10:44:52,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854472348] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:44:52,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:44:52,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:44:52,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948177227] [2024-11-09 10:44:52,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:44:52,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:44:52,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:44:52,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:44:52,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:44:52,914 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-09 10:44:52,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 17 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:44:52,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:44:52,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-09 10:44:52,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:44:53,001 INFO L124 PetriNetUnfolderBase]: 59/104 cut-off events. [2024-11-09 10:44:53,001 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-09 10:44:53,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 104 events. 59/104 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 278 event pairs, 8 based on Foata normal form. 2/71 useless extension candidates. Maximal degree in co-relation 179. Up to 77 conditions per place. [2024-11-09 10:44:53,004 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 17 selfloop transitions, 3 changer transitions 1/24 dead transitions. [2024-11-09 10:44:53,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 24 transitions, 111 flow [2024-11-09 10:44:53,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:44:53,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:44:53,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 41 transitions. [2024-11-09 10:44:53,017 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6833333333333333 [2024-11-09 10:44:53,019 INFO L175 Difference]: Start difference. First operand has 22 places, 17 transitions, 46 flow. Second operand 3 states and 41 transitions. [2024-11-09 10:44:53,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 24 transitions, 111 flow [2024-11-09 10:44:53,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 24 transitions, 97 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-09 10:44:53,025 INFO L231 Difference]: Finished difference. Result has 19 places, 17 transitions, 53 flow [2024-11-09 10:44:53,027 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=19, PETRI_TRANSITIONS=17} [2024-11-09 10:44:53,032 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, -3 predicate places. [2024-11-09 10:44:53,032 INFO L471 AbstractCegarLoop]: Abstraction has has 19 places, 17 transitions, 53 flow [2024-11-09 10:44:53,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:44:53,033 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:44:53,033 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:44:53,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 10:44:53,033 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:44:53,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:44:53,034 INFO L85 PathProgramCache]: Analyzing trace with hash -961049892, now seen corresponding path program 1 times [2024-11-09 10:44:53,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:44:53,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784141656] [2024-11-09 10:44:53,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:44:53,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:44:53,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:44:53,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:44:53,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:44:53,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784141656] [2024-11-09 10:44:53,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784141656] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:44:53,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:44:53,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:44:53,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691883229] [2024-11-09 10:44:53,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:44:53,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:44:53,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:44:53,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:44:53,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:44:53,180 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-09 10:44:53,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 17 transitions, 53 flow. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:44:53,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:44:53,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-09 10:44:53,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:44:53,297 INFO L124 PetriNetUnfolderBase]: 57/101 cut-off events. [2024-11-09 10:44:53,297 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-11-09 10:44:53,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 101 events. 57/101 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 249 event pairs, 1 based on Foata normal form. 2/103 useless extension candidates. Maximal degree in co-relation 72. Up to 38 conditions per place. [2024-11-09 10:44:53,299 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 22 selfloop transitions, 6 changer transitions 4/35 dead transitions. [2024-11-09 10:44:53,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 35 transitions, 163 flow [2024-11-09 10:44:53,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:44:53,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:44:53,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 63 transitions. [2024-11-09 10:44:53,301 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.63 [2024-11-09 10:44:53,301 INFO L175 Difference]: Start difference. First operand has 19 places, 17 transitions, 53 flow. Second operand 5 states and 63 transitions. [2024-11-09 10:44:53,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 35 transitions, 163 flow [2024-11-09 10:44:53,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 35 transitions, 159 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:44:53,303 INFO L231 Difference]: Finished difference. Result has 23 places, 19 transitions, 74 flow [2024-11-09 10:44:53,303 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=74, PETRI_PLACES=23, PETRI_TRANSITIONS=19} [2024-11-09 10:44:53,304 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 1 predicate places. [2024-11-09 10:44:53,304 INFO L471 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 74 flow [2024-11-09 10:44:53,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:44:53,305 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:44:53,305 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:44:53,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 10:44:53,305 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:44:53,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:44:53,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1604659651, now seen corresponding path program 1 times [2024-11-09 10:44:53,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:44:53,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154951448] [2024-11-09 10:44:53,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:44:53,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:44:53,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:44:53,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:44:53,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:44:53,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154951448] [2024-11-09 10:44:53,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154951448] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:44:53,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:44:53,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:44:53,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957918583] [2024-11-09 10:44:53,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:44:53,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:44:53,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:44:53,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:44:53,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:44:53,455 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-09 10:44:53,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:44:53,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:44:53,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-09 10:44:53,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:44:53,564 INFO L124 PetriNetUnfolderBase]: 51/93 cut-off events. [2024-11-09 10:44:53,565 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2024-11-09 10:44:53,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 93 events. 51/93 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 224 event pairs, 1 based on Foata normal form. 3/96 useless extension candidates. Maximal degree in co-relation 79. Up to 46 conditions per place. [2024-11-09 10:44:53,566 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 17 selfloop transitions, 4 changer transitions 7/31 dead transitions. [2024-11-09 10:44:53,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 31 transitions, 161 flow [2024-11-09 10:44:53,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:44:53,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:44:53,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 59 transitions. [2024-11-09 10:44:53,568 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.59 [2024-11-09 10:44:53,569 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 74 flow. Second operand 5 states and 59 transitions. [2024-11-09 10:44:53,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 31 transitions, 161 flow [2024-11-09 10:44:53,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 31 transitions, 158 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:44:53,570 INFO L231 Difference]: Finished difference. Result has 26 places, 17 transitions, 68 flow [2024-11-09 10:44:53,570 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=68, PETRI_PLACES=26, PETRI_TRANSITIONS=17} [2024-11-09 10:44:53,573 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 4 predicate places. [2024-11-09 10:44:53,573 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 17 transitions, 68 flow [2024-11-09 10:44:53,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:44:53,573 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:44:53,574 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:44:53,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 10:44:53,574 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:44:53,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:44:53,576 INFO L85 PathProgramCache]: Analyzing trace with hash 105206424, now seen corresponding path program 2 times [2024-11-09 10:44:53,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:44:53,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553113279] [2024-11-09 10:44:53,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:44:53,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:44:53,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:44:53,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:44:53,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:44:53,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553113279] [2024-11-09 10:44:53,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553113279] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:44:53,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569153975] [2024-11-09 10:44:53,675 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 10:44:53,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:44:53,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:44:53,677 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:44:53,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 10:44:53,748 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 10:44:53,748 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:44:53,750 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 10:44:53,753 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:44:53,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:44:53,916 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:44:53,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:44:53,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569153975] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:44:53,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:44:53,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-11-09 10:44:53,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636953749] [2024-11-09 10:44:53,982 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:44:53,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 10:44:53,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:44:53,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 10:44:53,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 10:44:53,985 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-09 10:44:53,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 17 transitions, 68 flow. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 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) [2024-11-09 10:44:53,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:44:53,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-09 10:44:53,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:44:54,081 INFO L124 PetriNetUnfolderBase]: 41/74 cut-off events. [2024-11-09 10:44:54,082 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2024-11-09 10:44:54,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 232 conditions, 74 events. 41/74 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 148 event pairs, 3 based on Foata normal form. 5/79 useless extension candidates. Maximal degree in co-relation 71. Up to 48 conditions per place. [2024-11-09 10:44:54,084 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 20 selfloop transitions, 6 changer transitions 0/29 dead transitions. [2024-11-09 10:44:54,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 29 transitions, 155 flow [2024-11-09 10:44:54,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:44:54,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:44:54,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 58 transitions. [2024-11-09 10:44:54,087 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.58 [2024-11-09 10:44:54,087 INFO L175 Difference]: Start difference. First operand has 26 places, 17 transitions, 68 flow. Second operand 5 states and 58 transitions. [2024-11-09 10:44:54,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 29 transitions, 155 flow [2024-11-09 10:44:54,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 29 transitions, 145 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-09 10:44:54,089 INFO L231 Difference]: Finished difference. Result has 28 places, 20 transitions, 95 flow [2024-11-09 10:44:54,089 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=95, PETRI_PLACES=28, PETRI_TRANSITIONS=20} [2024-11-09 10:44:54,090 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 6 predicate places. [2024-11-09 10:44:54,090 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 20 transitions, 95 flow [2024-11-09 10:44:54,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 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) [2024-11-09 10:44:54,090 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:44:54,091 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:44:54,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 10:44:54,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:44:54,293 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:44:54,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:44:54,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1674218513, now seen corresponding path program 2 times [2024-11-09 10:44:54,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:44:54,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858049893] [2024-11-09 10:44:54,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:44:54,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:44:54,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:44:54,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:44:54,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:44:54,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858049893] [2024-11-09 10:44:54,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858049893] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:44:54,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:44:54,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:44:54,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551555471] [2024-11-09 10:44:54,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:44:54,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:44:54,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:44:54,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:44:54,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:44:54,378 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-09 10:44:54,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 20 transitions, 95 flow. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:44:54,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:44:54,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-09 10:44:54,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:44:54,472 INFO L124 PetriNetUnfolderBase]: 37/70 cut-off events. [2024-11-09 10:44:54,472 INFO L125 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2024-11-09 10:44:54,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257 conditions, 70 events. 37/70 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 135 event pairs, 2 based on Foata normal form. 4/74 useless extension candidates. Maximal degree in co-relation 121. Up to 55 conditions per place. [2024-11-09 10:44:54,473 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 20 selfloop transitions, 6 changer transitions 0/29 dead transitions. [2024-11-09 10:44:54,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 180 flow [2024-11-09 10:44:54,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:44:54,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:44:54,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 55 transitions. [2024-11-09 10:44:54,477 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-11-09 10:44:54,478 INFO L175 Difference]: Start difference. First operand has 28 places, 20 transitions, 95 flow. Second operand 5 states and 55 transitions. [2024-11-09 10:44:54,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 180 flow [2024-11-09 10:44:54,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 29 transitions, 175 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-09 10:44:54,479 INFO L231 Difference]: Finished difference. Result has 33 places, 23 transitions, 131 flow [2024-11-09 10:44:54,480 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=131, PETRI_PLACES=33, PETRI_TRANSITIONS=23} [2024-11-09 10:44:54,483 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 11 predicate places. [2024-11-09 10:44:54,483 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 23 transitions, 131 flow [2024-11-09 10:44:54,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:44:54,483 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:44:54,484 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:44:54,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 10:44:54,484 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:44:54,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:44:54,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1376935521, now seen corresponding path program 1 times [2024-11-09 10:44:54,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:44:54,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770050817] [2024-11-09 10:44:54,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:44:54,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:44:54,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:44:54,937 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:44:54,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:44:54,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770050817] [2024-11-09 10:44:54,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770050817] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:44:54,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157536399] [2024-11-09 10:44:54,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:44:54,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:44:54,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:44:54,941 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:44:54,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 10:44:55,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:44:55,045 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 10:44:55,046 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:45:02,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:45:02,998 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:45:05,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:45:05,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157536399] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:45:05,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:45:05,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-09 10:45:05,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684727747] [2024-11-09 10:45:05,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:45:05,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 10:45:05,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:45:05,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 10:45:05,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-09 10:45:05,809 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-09 10:45:05,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 23 transitions, 131 flow. Second operand has 15 states, 15 states have (on average 7.933333333333334) internal successors, (119), 15 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:45:05,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:45:05,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-09 10:45:05,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:45:08,561 INFO L124 PetriNetUnfolderBase]: 125/239 cut-off events. [2024-11-09 10:45:08,562 INFO L125 PetriNetUnfolderBase]: For 454/454 co-relation queries the response was YES. [2024-11-09 10:45:08,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 973 conditions, 239 events. 125/239 cut-off events. For 454/454 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 825 event pairs, 3 based on Foata normal form. 6/245 useless extension candidates. Maximal degree in co-relation 538. Up to 85 conditions per place. [2024-11-09 10:45:08,569 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 49 selfloop transitions, 25 changer transitions 14/91 dead transitions. [2024-11-09 10:45:08,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 91 transitions, 651 flow [2024-11-09 10:45:08,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 10:45:08,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-09 10:45:08,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 161 transitions. [2024-11-09 10:45:08,573 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6192307692307693 [2024-11-09 10:45:08,573 INFO L175 Difference]: Start difference. First operand has 33 places, 23 transitions, 131 flow. Second operand 13 states and 161 transitions. [2024-11-09 10:45:08,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 91 transitions, 651 flow [2024-11-09 10:45:08,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 91 transitions, 636 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-09 10:45:08,579 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 383 flow [2024-11-09 10:45:08,579 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=383, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2024-11-09 10:45:08,580 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 29 predicate places. [2024-11-09 10:45:08,580 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 383 flow [2024-11-09 10:45:08,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.933333333333334) internal successors, (119), 15 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:45:08,581 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:45:08,581 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:45:08,598 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 10:45:08,784 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,SelfDestructingSolverStorable5 [2024-11-09 10:45:08,785 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:45:08,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:45:08,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1411631653, now seen corresponding path program 2 times [2024-11-09 10:45:08,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:45:08,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505646377] [2024-11-09 10:45:08,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:45:08,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:45:08,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:45:09,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:45:09,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:45:09,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505646377] [2024-11-09 10:45:09,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505646377] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:45:09,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326992143] [2024-11-09 10:45:09,094 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 10:45:09,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:45:09,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:45:09,097 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:45:09,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 10:45:09,174 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 10:45:09,174 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:45:09,177 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 10:45:09,179 INFO L278 TraceCheckSpWp]: Computing forward predicates...