./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/clever.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/clever.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 f1b460e4dbdd0bf3097d690d1720c7a2141566e2aa4ca1ed003c7fa25661851d --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 19:53:20,713 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:53:20,779 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 19:53:20,785 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:53:20,788 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:53:20,819 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:53:20,820 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:53:20,821 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:53:20,821 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:53:20,824 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:53:20,824 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:53:20,824 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:53:20,825 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:53:20,825 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:53:20,829 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:53:20,830 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:53:20,830 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:53:20,830 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:53:20,830 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:53:20,831 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:53:20,831 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:53:20,831 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:53:20,832 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:53:20,832 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:53:20,832 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:53:20,834 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:53:20,834 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:53:20,835 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:53:20,835 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:53:20,835 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:53:20,835 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:53:20,836 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:53:20,836 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:53:20,836 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:53:20,836 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:53:20,837 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:53:20,838 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 19:53:20,838 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 19:53:20,838 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:53:20,838 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:53:20,839 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:53:20,839 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:53:20,840 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1b460e4dbdd0bf3097d690d1720c7a2141566e2aa4ca1ed003c7fa25661851d [2024-10-11 19:53:21,120 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:53:21,146 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:53:21,150 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:53:21,151 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:53:21,153 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:53:21,155 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/clever.wvr.c [2024-10-11 19:53:22,665 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:53:22,867 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:53:22,867 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/clever.wvr.c [2024-10-11 19:53:22,874 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/766b5e2b9/a635eeeda49e4e3086fad2388e839b05/FLAG7a245e0ba [2024-10-11 19:53:23,236 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/766b5e2b9/a635eeeda49e4e3086fad2388e839b05 [2024-10-11 19:53:23,239 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:53:23,240 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:53:23,241 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:53:23,241 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:53:23,247 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:53:23,247 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:53:23" (1/1) ... [2024-10-11 19:53:23,248 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45050d1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:23, skipping insertion in model container [2024-10-11 19:53:23,249 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:53:23" (1/1) ... [2024-10-11 19:53:23,273 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:53:23,536 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:53:23,546 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 19:53:23,575 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:53:23,595 INFO L204 MainTranslator]: Completed translation [2024-10-11 19:53:23,596 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:23 WrapperNode [2024-10-11 19:53:23,596 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:53:23,597 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 19:53:23,597 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 19:53:23,597 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 19:53:23,603 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:23" (1/1) ... [2024-10-11 19:53:23,610 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:23" (1/1) ... [2024-10-11 19:53:23,625 INFO L138 Inliner]: procedures = 18, calls = 12, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 74 [2024-10-11 19:53:23,626 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 19:53:23,627 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 19:53:23,627 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 19:53:23,627 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 19:53:23,641 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:23" (1/1) ... [2024-10-11 19:53:23,641 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:23" (1/1) ... [2024-10-11 19:53:23,643 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:23" (1/1) ... [2024-10-11 19:53:23,661 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]. [2024-10-11 19:53:23,661 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:23" (1/1) ... [2024-10-11 19:53:23,661 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:23" (1/1) ... [2024-10-11 19:53:23,665 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:23" (1/1) ... [2024-10-11 19:53:23,668 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:23" (1/1) ... [2024-10-11 19:53:23,669 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:23" (1/1) ... [2024-10-11 19:53:23,670 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:23" (1/1) ... [2024-10-11 19:53:23,672 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 19:53:23,673 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 19:53:23,673 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 19:53:23,673 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 19:53:23,677 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:23" (1/1) ... [2024-10-11 19:53:23,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:53:23,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:53:23,715 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 19:53:23,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 19:53:23,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 19:53:23,769 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 19:53:23,769 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 19:53:23,769 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 19:53:23,769 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 19:53:23,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 19:53:23,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 19:53:23,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 19:53:23,771 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 19:53:23,854 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 19:53:23,856 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 19:53:24,042 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 19:53:24,042 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 19:53:24,257 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 19:53:24,257 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-11 19:53:24,258 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:53:24 BoogieIcfgContainer [2024-10-11 19:53:24,258 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 19:53:24,260 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 19:53:24,260 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 19:53:24,263 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 19:53:24,264 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 07:53:23" (1/3) ... [2024-10-11 19:53:24,264 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55a3fb0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:53:24, skipping insertion in model container [2024-10-11 19:53:24,265 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:23" (2/3) ... [2024-10-11 19:53:24,265 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55a3fb0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:53:24, skipping insertion in model container [2024-10-11 19:53:24,265 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:53:24" (3/3) ... [2024-10-11 19:53:24,267 INFO L112 eAbstractionObserver]: Analyzing ICFG clever.wvr.c [2024-10-11 19:53:24,281 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 19:53:24,282 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-11 19:53:24,282 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 19:53:24,315 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-11 19:53:24,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 26 places, 22 transitions, 58 flow [2024-10-11 19:53:24,386 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2024-10-11 19:53:24,386 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 19:53:24,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 20 events. 3/20 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 14 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 13. Up to 2 conditions per place. [2024-10-11 19:53:24,389 INFO L82 GeneralOperation]: Start removeDead. Operand has 26 places, 22 transitions, 58 flow [2024-10-11 19:53:24,391 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 23 places, 19 transitions, 50 flow [2024-10-11 19:53:24,401 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:53:24,412 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;@28b8a853, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:53:24,412 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-11 19:53:24,421 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:53:24,421 INFO L124 PetriNetUnfolderBase]: 3/16 cut-off events. [2024-10-11 19:53:24,421 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 19:53:24,421 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:53:24,422 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:53:24,422 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)] === [2024-10-11 19:53:24,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:53:24,429 INFO L85 PathProgramCache]: Analyzing trace with hash -806847430, now seen corresponding path program 1 times [2024-10-11 19:53:24,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:53:24,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500052628] [2024-10-11 19:53:24,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:24,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:53:24,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:24,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:24,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:53:24,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500052628] [2024-10-11 19:53:24,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500052628] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:53:24,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:53:24,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:53:24,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135910183] [2024-10-11 19:53:24,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:53:24,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:53:24,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:53:24,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:53:24,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:53:24,953 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-10-11 19:53:24,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 50 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) [2024-10-11 19:53:24,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:53:24,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-10-11 19:53:24,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:53:25,056 INFO L124 PetriNetUnfolderBase]: 106/171 cut-off events. [2024-10-11 19:53:25,057 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-10-11 19:53:25,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 364 conditions, 171 events. 106/171 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 510 event pairs, 19 based on Foata normal form. 2/107 useless extension candidates. Maximal degree in co-relation 318. Up to 110 conditions per place. [2024-10-11 19:53:25,064 INFO L140 encePairwiseOnDemand]: 17/22 looper letters, 21 selfloop transitions, 3 changer transitions 1/28 dead transitions. [2024-10-11 19:53:25,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 28 transitions, 127 flow [2024-10-11 19:53:25,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:53:25,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:53:25,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 45 transitions. [2024-10-11 19:53:25,076 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6818181818181818 [2024-10-11 19:53:25,079 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 50 flow. Second operand 3 states and 45 transitions. [2024-10-11 19:53:25,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 28 transitions, 127 flow [2024-10-11 19:53:25,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 28 transitions, 113 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 19:53:25,084 INFO L231 Difference]: Finished difference. Result has 20 places, 19 transitions, 57 flow [2024-10-11 19:53:25,085 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=57, PETRI_PLACES=20, PETRI_TRANSITIONS=19} [2024-10-11 19:53:25,088 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, -3 predicate places. [2024-10-11 19:53:25,089 INFO L471 AbstractCegarLoop]: Abstraction has has 20 places, 19 transitions, 57 flow [2024-10-11 19:53:25,089 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) [2024-10-11 19:53:25,089 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:53:25,089 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:53:25,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 19:53:25,090 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)] === [2024-10-11 19:53:25,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:53:25,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1928839812, now seen corresponding path program 1 times [2024-10-11 19:53:25,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:53:25,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186391983] [2024-10-11 19:53:25,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:25,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:53:25,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:25,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:25,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:53:25,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186391983] [2024-10-11 19:53:25,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186391983] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:53:25,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:53:25,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:53:25,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037194515] [2024-10-11 19:53:25,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:53:25,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:53:25,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:53:25,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:53:25,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:53:25,212 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-10-11 19:53:25,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 19 transitions, 57 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) [2024-10-11 19:53:25,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:53:25,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-10-11 19:53:25,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:53:25,355 INFO L124 PetriNetUnfolderBase]: 145/242 cut-off events. [2024-10-11 19:53:25,355 INFO L125 PetriNetUnfolderBase]: For 52/56 co-relation queries the response was YES. [2024-10-11 19:53:25,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 579 conditions, 242 events. 145/242 cut-off events. For 52/56 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 807 event pairs, 12 based on Foata normal form. 7/220 useless extension candidates. Maximal degree in co-relation 172. Up to 96 conditions per place. [2024-10-11 19:53:25,359 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 37 selfloop transitions, 7 changer transitions 2/49 dead transitions. [2024-10-11 19:53:25,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 49 transitions, 236 flow [2024-10-11 19:53:25,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:53:25,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:53:25,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 71 transitions. [2024-10-11 19:53:25,362 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6454545454545455 [2024-10-11 19:53:25,362 INFO L175 Difference]: Start difference. First operand has 20 places, 19 transitions, 57 flow. Second operand 5 states and 71 transitions. [2024-10-11 19:53:25,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 49 transitions, 236 flow [2024-10-11 19:53:25,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 49 transitions, 229 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:53:25,365 INFO L231 Difference]: Finished difference. Result has 26 places, 25 transitions, 105 flow [2024-10-11 19:53:25,366 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=105, PETRI_PLACES=26, PETRI_TRANSITIONS=25} [2024-10-11 19:53:25,368 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 3 predicate places. [2024-10-11 19:53:25,368 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 25 transitions, 105 flow [2024-10-11 19:53:25,368 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) [2024-10-11 19:53:25,369 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:53:25,369 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:53:25,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 19:53:25,369 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)] === [2024-10-11 19:53:25,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:53:25,370 INFO L85 PathProgramCache]: Analyzing trace with hash -69603818, now seen corresponding path program 2 times [2024-10-11 19:53:25,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:53:25,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344941980] [2024-10-11 19:53:25,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:25,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:53:25,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:25,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:25,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:53:25,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344941980] [2024-10-11 19:53:25,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344941980] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:53:25,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:53:25,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:53:25,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551500437] [2024-10-11 19:53:25,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:53:25,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:53:25,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:53:25,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:53:25,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:53:25,474 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-10-11 19:53:25,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 25 transitions, 105 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) [2024-10-11 19:53:25,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:53:25,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-10-11 19:53:25,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:53:25,582 INFO L124 PetriNetUnfolderBase]: 146/238 cut-off events. [2024-10-11 19:53:25,582 INFO L125 PetriNetUnfolderBase]: For 196/196 co-relation queries the response was YES. [2024-10-11 19:53:25,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 747 conditions, 238 events. 146/238 cut-off events. For 196/196 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 804 event pairs, 14 based on Foata normal form. 4/239 useless extension candidates. Maximal degree in co-relation 306. Up to 103 conditions per place. [2024-10-11 19:53:25,585 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 31 selfloop transitions, 11 changer transitions 5/50 dead transitions. [2024-10-11 19:53:25,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 50 transitions, 299 flow [2024-10-11 19:53:25,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:53:25,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:53:25,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 67 transitions. [2024-10-11 19:53:25,587 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6090909090909091 [2024-10-11 19:53:25,587 INFO L175 Difference]: Start difference. First operand has 26 places, 25 transitions, 105 flow. Second operand 5 states and 67 transitions. [2024-10-11 19:53:25,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 50 transitions, 299 flow [2024-10-11 19:53:25,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 50 transitions, 299 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 19:53:25,592 INFO L231 Difference]: Finished difference. Result has 33 places, 29 transitions, 170 flow [2024-10-11 19:53:25,592 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=170, PETRI_PLACES=33, PETRI_TRANSITIONS=29} [2024-10-11 19:53:25,593 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 10 predicate places. [2024-10-11 19:53:25,593 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 29 transitions, 170 flow [2024-10-11 19:53:25,593 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) [2024-10-11 19:53:25,593 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:53:25,593 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:53:25,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 19:53:25,594 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)] === [2024-10-11 19:53:25,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:53:25,597 INFO L85 PathProgramCache]: Analyzing trace with hash -43776262, now seen corresponding path program 1 times [2024-10-11 19:53:25,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:53:25,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592341339] [2024-10-11 19:53:25,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:25,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:53:25,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:25,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:53:25,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:53:25,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592341339] [2024-10-11 19:53:25,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592341339] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:53:25,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416198919] [2024-10-11 19:53:25,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:25,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:53:25,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:53:25,688 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:53:25,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 19:53:25,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:25,760 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 19:53:25,765 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:53:25,916 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:53:25,917 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:53:25,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:53:25,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416198919] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:53:25,956 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:53:25,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-10-11 19:53:25,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710837032] [2024-10-11 19:53:25,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:53:25,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 19:53:25,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:53:25,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 19:53:25,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 19:53:25,958 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-10-11 19:53:25,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 170 flow. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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) [2024-10-11 19:53:25,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:53:25,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-10-11 19:53:25,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:53:26,061 INFO L124 PetriNetUnfolderBase]: 127/223 cut-off events. [2024-10-11 19:53:26,061 INFO L125 PetriNetUnfolderBase]: For 330/330 co-relation queries the response was YES. [2024-10-11 19:53:26,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 841 conditions, 223 events. 127/223 cut-off events. For 330/330 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 689 event pairs, 2 based on Foata normal form. 18/239 useless extension candidates. Maximal degree in co-relation 498. Up to 91 conditions per place. [2024-10-11 19:53:26,064 INFO L140 encePairwiseOnDemand]: 17/22 looper letters, 41 selfloop transitions, 9 changer transitions 3/56 dead transitions. [2024-10-11 19:53:26,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 56 transitions, 409 flow [2024-10-11 19:53:26,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:53:26,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:53:26,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 70 transitions. [2024-10-11 19:53:26,066 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6363636363636364 [2024-10-11 19:53:26,066 INFO L175 Difference]: Start difference. First operand has 33 places, 29 transitions, 170 flow. Second operand 5 states and 70 transitions. [2024-10-11 19:53:26,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 56 transitions, 409 flow [2024-10-11 19:53:26,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 56 transitions, 403 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-10-11 19:53:26,071 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 242 flow [2024-10-11 19:53:26,071 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=242, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2024-10-11 19:53:26,072 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 16 predicate places. [2024-10-11 19:53:26,072 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 242 flow [2024-10-11 19:53:26,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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) [2024-10-11 19:53:26,073 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:53:26,073 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:53:26,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-11 19:53:26,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:53:26,278 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)] === [2024-10-11 19:53:26,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:53:26,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1256820841, now seen corresponding path program 1 times [2024-10-11 19:53:26,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:53:26,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418659790] [2024-10-11 19:53:26,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:26,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:53:26,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:26,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:26,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:53:26,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418659790] [2024-10-11 19:53:26,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418659790] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:53:26,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751772332] [2024-10-11 19:53:26,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:26,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:53:26,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:53:26,602 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:53:26,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 19:53:26,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:26,679 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 19:53:26,680 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:53:26,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:26,939 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:53:27,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:27,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751772332] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:53:27,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:53:27,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2024-10-11 19:53:27,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894347762] [2024-10-11 19:53:27,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:53:27,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 19:53:27,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:53:27,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 19:53:27,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2024-10-11 19:53:27,115 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-10-11 19:53:27,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 242 flow. Second operand has 13 states, 13 states have (on average 8.76923076923077) internal successors, (114), 13 states have internal predecessors, (114), 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) [2024-10-11 19:53:27,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:53:27,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-10-11 19:53:27,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:53:27,462 INFO L124 PetriNetUnfolderBase]: 261/447 cut-off events. [2024-10-11 19:53:27,462 INFO L125 PetriNetUnfolderBase]: For 779/779 co-relation queries the response was YES. [2024-10-11 19:53:27,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1833 conditions, 447 events. 261/447 cut-off events. For 779/779 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1679 event pairs, 10 based on Foata normal form. 2/447 useless extension candidates. Maximal degree in co-relation 1002. Up to 188 conditions per place. [2024-10-11 19:53:27,472 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 74 selfloop transitions, 23 changer transitions 7/107 dead transitions. [2024-10-11 19:53:27,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 107 transitions, 903 flow [2024-10-11 19:53:27,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 19:53:27,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 19:53:27,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 128 transitions. [2024-10-11 19:53:27,475 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6464646464646465 [2024-10-11 19:53:27,475 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 242 flow. Second operand 9 states and 128 transitions. [2024-10-11 19:53:27,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 107 transitions, 903 flow [2024-10-11 19:53:27,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 107 transitions, 893 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-11 19:53:27,485 INFO L231 Difference]: Finished difference. Result has 50 places, 53 transitions, 485 flow [2024-10-11 19:53:27,486 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=485, PETRI_PLACES=50, PETRI_TRANSITIONS=53} [2024-10-11 19:53:27,486 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 27 predicate places. [2024-10-11 19:53:27,486 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 53 transitions, 485 flow [2024-10-11 19:53:27,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.76923076923077) internal successors, (114), 13 states have internal predecessors, (114), 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) [2024-10-11 19:53:27,487 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:53:27,487 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:53:27,504 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 19:53:27,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:53:27,692 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)] === [2024-10-11 19:53:27,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:53:27,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1202987982, now seen corresponding path program 2 times [2024-10-11 19:53:27,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:53:27,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728523272] [2024-10-11 19:53:27,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:27,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:53:27,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:27,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:53:27,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:53:27,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728523272] [2024-10-11 19:53:27,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728523272] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:53:27,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:53:27,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:53:27,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851986061] [2024-10-11 19:53:27,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:53:27,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:53:27,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:53:27,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:53:27,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:53:27,745 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-10-11 19:53:27,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 53 transitions, 485 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) [2024-10-11 19:53:27,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:53:27,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-10-11 19:53:27,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:53:27,856 INFO L124 PetriNetUnfolderBase]: 247/423 cut-off events. [2024-10-11 19:53:27,857 INFO L125 PetriNetUnfolderBase]: For 1324/1348 co-relation queries the response was YES. [2024-10-11 19:53:27,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1957 conditions, 423 events. 247/423 cut-off events. For 1324/1348 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1570 event pairs, 33 based on Foata normal form. 6/426 useless extension candidates. Maximal degree in co-relation 1826. Up to 185 conditions per place. [2024-10-11 19:53:27,862 INFO L140 encePairwiseOnDemand]: 17/22 looper letters, 57 selfloop transitions, 13 changer transitions 5/78 dead transitions. [2024-10-11 19:53:27,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 78 transitions, 791 flow [2024-10-11 19:53:27,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:53:27,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:53:27,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 64 transitions. [2024-10-11 19:53:27,863 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5818181818181818 [2024-10-11 19:53:27,864 INFO L175 Difference]: Start difference. First operand has 50 places, 53 transitions, 485 flow. Second operand 5 states and 64 transitions. [2024-10-11 19:53:27,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 78 transitions, 791 flow [2024-10-11 19:53:27,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 78 transitions, 742 flow, removed 23 selfloop flow, removed 1 redundant places. [2024-10-11 19:53:27,870 INFO L231 Difference]: Finished difference. Result has 56 places, 56 transitions, 518 flow [2024-10-11 19:53:27,871 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=518, PETRI_PLACES=56, PETRI_TRANSITIONS=56} [2024-10-11 19:53:27,871 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 33 predicate places. [2024-10-11 19:53:27,872 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 56 transitions, 518 flow [2024-10-11 19:53:27,872 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) [2024-10-11 19:53:27,872 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:53:27,872 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:53:27,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 19:53:27,873 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)] === [2024-10-11 19:53:27,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:53:27,873 INFO L85 PathProgramCache]: Analyzing trace with hash -818120537, now seen corresponding path program 2 times [2024-10-11 19:53:27,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:53:27,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767129918] [2024-10-11 19:53:27,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:27,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:53:27,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:28,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:28,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:53:28,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767129918] [2024-10-11 19:53:28,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767129918] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:53:28,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632888524] [2024-10-11 19:53:28,175 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 19:53:28,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:53:28,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:53:28,178 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:53:28,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 19:53:28,235 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 19:53:28,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:53:28,237 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 19:53:28,238 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:53:28,444 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:28,444 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:53:28,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:28,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632888524] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:53:28,581 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:53:28,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2024-10-11 19:53:28,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753519222] [2024-10-11 19:53:28,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:53:28,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 19:53:28,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:53:28,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 19:53:28,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2024-10-11 19:53:28,583 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-10-11 19:53:28,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 56 transitions, 518 flow. Second operand has 13 states, 13 states have (on average 8.692307692307692) internal successors, (113), 13 states have internal predecessors, (113), 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) [2024-10-11 19:53:28,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:53:28,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-10-11 19:53:28,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:53:29,298 INFO L124 PetriNetUnfolderBase]: 729/1242 cut-off events. [2024-10-11 19:53:29,298 INFO L125 PetriNetUnfolderBase]: For 4764/4764 co-relation queries the response was YES. [2024-10-11 19:53:29,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5856 conditions, 1242 events. 729/1242 cut-off events. For 4764/4764 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 6024 event pairs, 54 based on Foata normal form. 8/1249 useless extension candidates. Maximal degree in co-relation 5138. Up to 333 conditions per place. [2024-10-11 19:53:29,313 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 146 selfloop transitions, 96 changer transitions 12/257 dead transitions. [2024-10-11 19:53:29,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 257 transitions, 2619 flow [2024-10-11 19:53:29,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-11 19:53:29,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-11 19:53:29,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 249 transitions. [2024-10-11 19:53:29,316 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6657754010695187 [2024-10-11 19:53:29,316 INFO L175 Difference]: Start difference. First operand has 56 places, 56 transitions, 518 flow. Second operand 17 states and 249 transitions. [2024-10-11 19:53:29,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 257 transitions, 2619 flow [2024-10-11 19:53:29,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 257 transitions, 2513 flow, removed 41 selfloop flow, removed 1 redundant places. [2024-10-11 19:53:29,335 INFO L231 Difference]: Finished difference. Result has 82 places, 147 transitions, 1757 flow [2024-10-11 19:53:29,335 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1757, PETRI_PLACES=82, PETRI_TRANSITIONS=147} [2024-10-11 19:53:29,336 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 59 predicate places. [2024-10-11 19:53:29,336 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 147 transitions, 1757 flow [2024-10-11 19:53:29,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.692307692307692) internal successors, (113), 13 states have internal predecessors, (113), 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) [2024-10-11 19:53:29,337 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:53:29,337 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:53:29,354 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 19:53:29,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:53:29,538 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:53:29,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:53:29,538 INFO L85 PathProgramCache]: Analyzing trace with hash 10525621, now seen corresponding path program 3 times [2024-10-11 19:53:29,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:53:29,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201524558] [2024-10-11 19:53:29,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:29,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:53:29,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:29,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:29,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:53:29,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201524558] [2024-10-11 19:53:29,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201524558] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:53:29,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128842533] [2024-10-11 19:53:29,818 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 19:53:29,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:53:29,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:53:29,821 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:53:29,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 19:53:29,889 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-11 19:53:29,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:53:29,891 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 19:53:29,893 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:53:30,062 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:30,063 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:53:30,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:30,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128842533] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:53:30,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:53:30,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2024-10-11 19:53:30,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790378154] [2024-10-11 19:53:30,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:53:30,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 19:53:30,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:53:30,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 19:53:30,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2024-10-11 19:53:30,183 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-10-11 19:53:30,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 147 transitions, 1757 flow. Second operand has 13 states, 13 states have (on average 8.692307692307692) internal successors, (113), 13 states have internal predecessors, (113), 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) [2024-10-11 19:53:30,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:53:30,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-10-11 19:53:30,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:53:30,961 INFO L124 PetriNetUnfolderBase]: 1487/2540 cut-off events. [2024-10-11 19:53:30,962 INFO L125 PetriNetUnfolderBase]: For 13105/13105 co-relation queries the response was YES. [2024-10-11 19:53:30,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13881 conditions, 2540 events. 1487/2540 cut-off events. For 13105/13105 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 14237 event pairs, 122 based on Foata normal form. 7/2546 useless extension candidates. Maximal degree in co-relation 11819. Up to 658 conditions per place. [2024-10-11 19:53:31,043 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 189 selfloop transitions, 164 changer transitions 12/368 dead transitions. [2024-10-11 19:53:31,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 368 transitions, 4819 flow [2024-10-11 19:53:31,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 19:53:31,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 19:53:31,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 158 transitions. [2024-10-11 19:53:31,045 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6528925619834711 [2024-10-11 19:53:31,045 INFO L175 Difference]: Start difference. First operand has 82 places, 147 transitions, 1757 flow. Second operand 11 states and 158 transitions. [2024-10-11 19:53:31,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 368 transitions, 4819 flow [2024-10-11 19:53:31,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 368 transitions, 4462 flow, removed 175 selfloop flow, removed 2 redundant places. [2024-10-11 19:53:31,090 INFO L231 Difference]: Finished difference. Result has 95 places, 258 transitions, 3563 flow [2024-10-11 19:53:31,091 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1570, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3563, PETRI_PLACES=95, PETRI_TRANSITIONS=258} [2024-10-11 19:53:31,091 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 72 predicate places. [2024-10-11 19:53:31,092 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 258 transitions, 3563 flow [2024-10-11 19:53:31,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.692307692307692) internal successors, (113), 13 states have internal predecessors, (113), 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) [2024-10-11 19:53:31,092 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:53:31,092 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:53:31,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-11 19:53:31,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-11 19:53:31,293 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:53:31,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:53:31,294 INFO L85 PathProgramCache]: Analyzing trace with hash 316240485, now seen corresponding path program 1 times [2024-10-11 19:53:31,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:53:31,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105132720] [2024-10-11 19:53:31,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:31,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:53:31,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:31,662 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:31,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:53:31,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105132720] [2024-10-11 19:53:31,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105132720] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:53:31,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897995906] [2024-10-11 19:53:31,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:31,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:53:31,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:53:31,666 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:53:31,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 19:53:31,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:31,845 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 19:53:31,847 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:53:36,627 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:36,627 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:53:36,950 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:53:36,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897995906] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:53:36,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:53:36,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 5] total 16 [2024-10-11 19:53:36,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621973454] [2024-10-11 19:53:36,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:53:36,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-11 19:53:36,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:53:36,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-11 19:53:36,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=216, Unknown=1, NotChecked=0, Total=272 [2024-10-11 19:53:36,953 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-10-11 19:53:36,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 258 transitions, 3563 flow. Second operand has 17 states, 17 states have (on average 8.411764705882353) internal successors, (143), 17 states have internal predecessors, (143), 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) [2024-10-11 19:53:36,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:53:36,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-10-11 19:53:36,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:53:43,908 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-11 19:53:49,346 INFO L124 PetriNetUnfolderBase]: 2421/4128 cut-off events. [2024-10-11 19:53:49,346 INFO L125 PetriNetUnfolderBase]: For 28030/28030 co-relation queries the response was YES. [2024-10-11 19:53:49,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24570 conditions, 4128 events. 2421/4128 cut-off events. For 28030/28030 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 24153 event pairs, 186 based on Foata normal form. 20/4147 useless extension candidates. Maximal degree in co-relation 22037. Up to 2307 conditions per place. [2024-10-11 19:53:49,406 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 350 selfloop transitions, 208 changer transitions 8/569 dead transitions. [2024-10-11 19:53:49,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 569 transitions, 8271 flow [2024-10-11 19:53:49,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-11 19:53:49,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-10-11 19:53:49,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 277 transitions. [2024-10-11 19:53:49,409 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6295454545454545 [2024-10-11 19:53:49,409 INFO L175 Difference]: Start difference. First operand has 95 places, 258 transitions, 3563 flow. Second operand 20 states and 277 transitions. [2024-10-11 19:53:49,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 569 transitions, 8271 flow [2024-10-11 19:53:49,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 569 transitions, 8133 flow, removed 54 selfloop flow, removed 7 redundant places. [2024-10-11 19:53:49,505 INFO L231 Difference]: Finished difference. Result has 120 places, 418 transitions, 6611 flow [2024-10-11 19:53:49,506 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3475, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=6611, PETRI_PLACES=120, PETRI_TRANSITIONS=418} [2024-10-11 19:53:49,506 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 97 predicate places. [2024-10-11 19:53:49,507 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 418 transitions, 6611 flow [2024-10-11 19:53:49,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 8.411764705882353) internal successors, (143), 17 states have internal predecessors, (143), 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) [2024-10-11 19:53:49,507 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:53:49,507 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:53:49,525 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-11 19:53:49,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:53:49,711 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:53:49,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:53:49,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1401244425, now seen corresponding path program 2 times [2024-10-11 19:53:49,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:53:49,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311491684] [2024-10-11 19:53:49,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:49,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:53:49,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:50,030 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:53:50,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:53:50,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311491684] [2024-10-11 19:53:50,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311491684] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:53:50,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349423310] [2024-10-11 19:53:50,031 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 19:53:50,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:53:50,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:53:50,034 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:53:50,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 19:53:50,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 19:53:50,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:53:50,168 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 19:53:50,171 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:53:50,664 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:50,664 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:53:50,819 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 19:53:50,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349423310] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:53:50,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:53:50,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 14 [2024-10-11 19:53:50,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871586411] [2024-10-11 19:53:50,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:53:50,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 19:53:50,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:53:50,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 19:53:50,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-10-11 19:53:50,821 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-10-11 19:53:50,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 418 transitions, 6611 flow. Second operand has 15 states, 15 states have (on average 8.4) internal successors, (126), 15 states have internal predecessors, (126), 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) [2024-10-11 19:53:50,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:53:50,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-10-11 19:53:50,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:53:53,064 INFO L124 PetriNetUnfolderBase]: 3626/6238 cut-off events. [2024-10-11 19:53:53,064 INFO L125 PetriNetUnfolderBase]: For 58623/58623 co-relation queries the response was YES. [2024-10-11 19:53:53,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40689 conditions, 6238 events. 3626/6238 cut-off events. For 58623/58623 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 40510 event pairs, 353 based on Foata normal form. 7/6244 useless extension candidates. Maximal degree in co-relation 38557. Up to 3985 conditions per place. [2024-10-11 19:53:53,134 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 484 selfloop transitions, 278 changer transitions 8/773 dead transitions. [2024-10-11 19:53:53,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 773 transitions, 13045 flow [2024-10-11 19:53:53,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-11 19:53:53,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-11 19:53:53,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 264 transitions. [2024-10-11 19:53:53,137 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-11 19:53:53,137 INFO L175 Difference]: Start difference. First operand has 120 places, 418 transitions, 6611 flow. Second operand 18 states and 264 transitions. [2024-10-11 19:53:53,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 773 transitions, 13045 flow [2024-10-11 19:53:53,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 773 transitions, 12404 flow, removed 314 selfloop flow, removed 3 redundant places. [2024-10-11 19:53:53,358 INFO L231 Difference]: Finished difference. Result has 145 places, 643 transitions, 11020 flow [2024-10-11 19:53:53,358 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=6256, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=11020, PETRI_PLACES=145, PETRI_TRANSITIONS=643} [2024-10-11 19:53:53,359 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 122 predicate places. [2024-10-11 19:53:53,359 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 643 transitions, 11020 flow [2024-10-11 19:53:53,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.4) internal successors, (126), 15 states have internal predecessors, (126), 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) [2024-10-11 19:53:53,360 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:53:53,360 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:53:53,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-11 19:53:53,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-11 19:53:53,561 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:53:53,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:53:53,562 INFO L85 PathProgramCache]: Analyzing trace with hash -248438368, now seen corresponding path program 3 times [2024-10-11 19:53:53,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:53:53,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280721981] [2024-10-11 19:53:53,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:53,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:53:53,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:53,664 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:53:53,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:53:53,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280721981] [2024-10-11 19:53:53,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280721981] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:53:53,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409808086] [2024-10-11 19:53:53,665 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 19:53:53,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:53:53,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:53:53,667 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:53:53,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 19:53:53,721 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-11 19:53:53,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:53:53,723 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 19:53:53,724 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:53:53,805 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:53:53,805 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:53:53,846 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:53:53,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409808086] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:53:53,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:53:53,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-10-11 19:53:53,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71909213] [2024-10-11 19:53:53,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:53:53,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 19:53:53,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:53:53,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 19:53:53,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-10-11 19:53:53,848 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-10-11 19:53:53,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 643 transitions, 11020 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:53:53,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:53:53,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-10-11 19:53:53,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:53:56,158 INFO L124 PetriNetUnfolderBase]: 5014/8847 cut-off events. [2024-10-11 19:53:56,159 INFO L125 PetriNetUnfolderBase]: For 114962/114978 co-relation queries the response was YES. [2024-10-11 19:53:56,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60682 conditions, 8847 events. 5014/8847 cut-off events. For 114962/114978 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 64015 event pairs, 82 based on Foata normal form. 76/8921 useless extension candidates. Maximal degree in co-relation 57429. Up to 3015 conditions per place. [2024-10-11 19:53:56,253 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 880 selfloop transitions, 290 changer transitions 13/1186 dead transitions. [2024-10-11 19:53:56,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 1186 transitions, 21504 flow [2024-10-11 19:53:56,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 19:53:56,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-11 19:53:56,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-10-11 19:53:56,255 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5795454545454546 [2024-10-11 19:53:56,255 INFO L175 Difference]: Start difference. First operand has 145 places, 643 transitions, 11020 flow. Second operand 12 states and 153 transitions. [2024-10-11 19:53:56,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 1186 transitions, 21504 flow [2024-10-11 19:53:56,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 1186 transitions, 20592 flow, removed 435 selfloop flow, removed 4 redundant places. [2024-10-11 19:53:56,756 INFO L231 Difference]: Finished difference. Result has 160 places, 817 transitions, 14848 flow [2024-10-11 19:53:56,756 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=10494, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=641, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=14848, PETRI_PLACES=160, PETRI_TRANSITIONS=817} [2024-10-11 19:53:56,757 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 137 predicate places. [2024-10-11 19:53:56,757 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 817 transitions, 14848 flow [2024-10-11 19:53:56,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:53:56,757 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:53:56,758 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:53:56,770 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-11 19:53:56,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:53:56,959 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:53:56,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:53:56,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1669623216, now seen corresponding path program 4 times [2024-10-11 19:53:56,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:53:56,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586645028] [2024-10-11 19:53:56,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:56,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:53:56,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:57,022 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:53:57,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:53:57,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586645028] [2024-10-11 19:53:57,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586645028] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:53:57,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547789845] [2024-10-11 19:53:57,023 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 19:53:57,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:53:57,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:53:57,025 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:53:57,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 19:53:57,080 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 19:53:57,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:53:57,082 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 19:53:57,083 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:53:57,156 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:53:57,157 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:53:57,199 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:53:57,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547789845] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:53:57,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:53:57,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 8 [2024-10-11 19:53:57,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818758114] [2024-10-11 19:53:57,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:53:57,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 19:53:57,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:53:57,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 19:53:57,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-10-11 19:53:57,202 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-10-11 19:53:57,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 817 transitions, 14848 flow. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 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) [2024-10-11 19:53:57,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:53:57,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-10-11 19:53:57,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:54:00,035 INFO L124 PetriNetUnfolderBase]: 5672/10406 cut-off events. [2024-10-11 19:54:00,035 INFO L125 PetriNetUnfolderBase]: For 153321/153321 co-relation queries the response was YES. [2024-10-11 19:54:00,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76833 conditions, 10406 events. 5672/10406 cut-off events. For 153321/153321 co-relation queries the response was YES. Maximal size of possible extension queue 650. Compared 81239 event pairs, 455 based on Foata normal form. 44/10449 useless extension candidates. Maximal degree in co-relation 76581. Up to 4318 conditions per place. [2024-10-11 19:54:00,155 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 712 selfloop transitions, 593 changer transitions 5/1313 dead transitions. [2024-10-11 19:54:00,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 1313 transitions, 25556 flow [2024-10-11 19:54:00,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 19:54:00,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-11 19:54:00,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 173 transitions. [2024-10-11 19:54:00,157 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5616883116883117 [2024-10-11 19:54:00,157 INFO L175 Difference]: Start difference. First operand has 160 places, 817 transitions, 14848 flow. Second operand 14 states and 173 transitions. [2024-10-11 19:54:00,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 1313 transitions, 25556 flow [2024-10-11 19:54:01,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 1313 transitions, 24899 flow, removed 319 selfloop flow, removed 4 redundant places. [2024-10-11 19:54:01,178 INFO L231 Difference]: Finished difference. Result has 173 places, 1002 transitions, 19728 flow [2024-10-11 19:54:01,179 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=14299, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=817, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=416, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=19728, PETRI_PLACES=173, PETRI_TRANSITIONS=1002} [2024-10-11 19:54:01,179 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 150 predicate places. [2024-10-11 19:54:01,180 INFO L471 AbstractCegarLoop]: Abstraction has has 173 places, 1002 transitions, 19728 flow [2024-10-11 19:54:01,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 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) [2024-10-11 19:54:01,180 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:54:01,181 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:54:01,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-11 19:54:01,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-11 19:54:01,386 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:54:01,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:54:01,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1097335117, now seen corresponding path program 5 times [2024-10-11 19:54:01,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:54:01,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612064408] [2024-10-11 19:54:01,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:54:01,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:54:01,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:01,651 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:54:01,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:54:01,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612064408] [2024-10-11 19:54:01,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612064408] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:54:01,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250229854] [2024-10-11 19:54:01,652 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 19:54:01,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:54:01,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:54:01,654 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:54:01,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-11 19:54:01,731 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-10-11 19:54:01,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:54:01,732 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 19:54:01,733 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:54:02,015 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:02,016 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:54:02,116 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:54:02,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250229854] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:54:02,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:54:02,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 14 [2024-10-11 19:54:02,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708896587] [2024-10-11 19:54:02,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:54:02,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 19:54:02,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:54:02,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 19:54:02,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2024-10-11 19:54:02,118 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-10-11 19:54:02,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 1002 transitions, 19728 flow. Second operand has 15 states, 15 states have (on average 8.4) internal successors, (126), 15 states have internal predecessors, (126), 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) [2024-10-11 19:54:02,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:54:02,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-10-11 19:54:02,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:54:06,688 INFO L124 PetriNetUnfolderBase]: 6966/12837 cut-off events. [2024-10-11 19:54:06,688 INFO L125 PetriNetUnfolderBase]: For 222277/222277 co-relation queries the response was YES. [2024-10-11 19:54:06,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100474 conditions, 12837 events. 6966/12837 cut-off events. For 222277/222277 co-relation queries the response was YES. Maximal size of possible extension queue 790. Compared 103388 event pairs, 577 based on Foata normal form. 35/12871 useless extension candidates. Maximal degree in co-relation 95727. Up to 5661 conditions per place. [2024-10-11 19:54:06,935 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 571 selfloop transitions, 950 changer transitions 18/1542 dead transitions. [2024-10-11 19:54:06,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 1542 transitions, 33047 flow [2024-10-11 19:54:06,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-11 19:54:06,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-11 19:54:06,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 317 transitions. [2024-10-11 19:54:06,937 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6003787878787878 [2024-10-11 19:54:06,937 INFO L175 Difference]: Start difference. First operand has 173 places, 1002 transitions, 19728 flow. Second operand 24 states and 317 transitions. [2024-10-11 19:54:06,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 1542 transitions, 33047 flow [2024-10-11 19:54:08,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 1542 transitions, 32125 flow, removed 430 selfloop flow, removed 5 redundant places. [2024-10-11 19:54:08,361 INFO L231 Difference]: Finished difference. Result has 203 places, 1402 transitions, 31919 flow [2024-10-11 19:54:08,362 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=17587, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=928, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=544, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=31919, PETRI_PLACES=203, PETRI_TRANSITIONS=1402} [2024-10-11 19:54:08,363 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 180 predicate places. [2024-10-11 19:54:08,363 INFO L471 AbstractCegarLoop]: Abstraction has has 203 places, 1402 transitions, 31919 flow [2024-10-11 19:54:08,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.4) internal successors, (126), 15 states have internal predecessors, (126), 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) [2024-10-11 19:54:08,363 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:54:08,363 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:54:08,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-11 19:54:08,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:54:08,564 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:54:08,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:54:08,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1390427790, now seen corresponding path program 6 times [2024-10-11 19:54:08,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:54:08,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865057156] [2024-10-11 19:54:08,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:54:08,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:54:08,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:08,779 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:08,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:54:08,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865057156] [2024-10-11 19:54:08,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865057156] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:54:08,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985278416] [2024-10-11 19:54:08,780 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 19:54:08,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:54:08,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:54:08,782 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:54:08,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-11 19:54:08,841 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-10-11 19:54:08,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:54:08,842 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 19:54:08,843 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:54:08,945 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:08,945 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:54:08,978 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:08,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985278416] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:54:08,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:54:08,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-10-11 19:54:08,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336491216] [2024-10-11 19:54:08,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:54:08,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 19:54:08,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:54:08,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 19:54:08,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-10-11 19:54:08,980 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-10-11 19:54:08,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 1402 transitions, 31919 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:54:08,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:54:08,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-10-11 19:54:08,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:54:14,893 INFO L124 PetriNetUnfolderBase]: 8401/15265 cut-off events. [2024-10-11 19:54:14,893 INFO L125 PetriNetUnfolderBase]: For 300087/300087 co-relation queries the response was YES. [2024-10-11 19:54:14,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129215 conditions, 15265 events. 8401/15265 cut-off events. For 300087/300087 co-relation queries the response was YES. Maximal size of possible extension queue 994. Compared 125148 event pairs, 624 based on Foata normal form. 146/15410 useless extension candidates. Maximal degree in co-relation 122367. Up to 6776 conditions per place. [2024-10-11 19:54:15,069 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 1060 selfloop transitions, 1013 changer transitions 0/2076 dead transitions. [2024-10-11 19:54:15,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 2076 transitions, 49389 flow [2024-10-11 19:54:15,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 19:54:15,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-11 19:54:15,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 177 transitions. [2024-10-11 19:54:15,073 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5746753246753247 [2024-10-11 19:54:15,073 INFO L175 Difference]: Start difference. First operand has 203 places, 1402 transitions, 31919 flow. Second operand 14 states and 177 transitions. [2024-10-11 19:54:15,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 2076 transitions, 49389 flow [2024-10-11 19:54:18,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 2076 transitions, 47008 flow, removed 1165 selfloop flow, removed 8 redundant places. [2024-10-11 19:54:18,041 INFO L231 Difference]: Finished difference. Result has 216 places, 1721 transitions, 41733 flow [2024-10-11 19:54:18,042 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=30097, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=716, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=571, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=41733, PETRI_PLACES=216, PETRI_TRANSITIONS=1721} [2024-10-11 19:54:18,043 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 193 predicate places. [2024-10-11 19:54:18,043 INFO L471 AbstractCegarLoop]: Abstraction has has 216 places, 1721 transitions, 41733 flow [2024-10-11 19:54:18,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:54:18,043 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:54:18,043 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:54:18,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-11 19:54:18,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-11 19:54:18,244 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:54:18,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:54:18,245 INFO L85 PathProgramCache]: Analyzing trace with hash -491053936, now seen corresponding path program 7 times [2024-10-11 19:54:18,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:54:18,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644939614] [2024-10-11 19:54:18,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:54:18,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:54:18,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:18,309 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:54:18,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:54:18,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644939614] [2024-10-11 19:54:18,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644939614] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:54:18,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756743348] [2024-10-11 19:54:18,310 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 19:54:18,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:54:18,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:54:18,312 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:54:18,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-11 19:54:18,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:18,362 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 19:54:18,363 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:54:18,435 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:18,435 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:54:18,469 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:54:18,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756743348] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:54:18,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:54:18,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 8 [2024-10-11 19:54:18,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65301548] [2024-10-11 19:54:18,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:54:18,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 19:54:18,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:54:18,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 19:54:18,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-11 19:54:18,471 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-10-11 19:54:18,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 1721 transitions, 41733 flow. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:54:18,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:54:18,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-10-11 19:54:18,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:54:25,967 INFO L124 PetriNetUnfolderBase]: 8971/16289 cut-off events. [2024-10-11 19:54:25,968 INFO L125 PetriNetUnfolderBase]: For 387175/387187 co-relation queries the response was YES. [2024-10-11 19:54:26,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149810 conditions, 16289 events. 8971/16289 cut-off events. For 387175/387187 co-relation queries the response was YES. Maximal size of possible extension queue 1114. Compared 135901 event pairs, 65 based on Foata normal form. 83/16370 useless extension candidates. Maximal degree in co-relation 144245. Up to 5202 conditions per place. [2024-10-11 19:54:26,262 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 1577 selfloop transitions, 723 changer transitions 0/2303 dead transitions. [2024-10-11 19:54:26,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 2303 transitions, 56265 flow [2024-10-11 19:54:26,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 19:54:26,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-11 19:54:26,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 182 transitions. [2024-10-11 19:54:26,264 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5515151515151515 [2024-10-11 19:54:26,264 INFO L175 Difference]: Start difference. First operand has 216 places, 1721 transitions, 41733 flow. Second operand 15 states and 182 transitions. [2024-10-11 19:54:26,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 2303 transitions, 56265 flow [2024-10-11 19:54:30,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 2303 transitions, 55947 flow, removed 153 selfloop flow, removed 2 redundant places. [2024-10-11 19:54:30,586 INFO L231 Difference]: Finished difference. Result has 232 places, 1834 transitions, 46665 flow [2024-10-11 19:54:30,587 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=40923, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1700, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=604, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1086, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=46665, PETRI_PLACES=232, PETRI_TRANSITIONS=1834} [2024-10-11 19:54:30,588 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 209 predicate places. [2024-10-11 19:54:30,588 INFO L471 AbstractCegarLoop]: Abstraction has has 232 places, 1834 transitions, 46665 flow [2024-10-11 19:54:30,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:54:30,588 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:54:30,588 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:54:30,600 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-11 19:54:30,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-11 19:54:30,789 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:54:30,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:54:30,789 INFO L85 PathProgramCache]: Analyzing trace with hash -720767963, now seen corresponding path program 8 times [2024-10-11 19:54:30,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:54:30,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971199672] [2024-10-11 19:54:30,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:54:30,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:54:30,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:31,030 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:31,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:54:31,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971199672] [2024-10-11 19:54:31,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971199672] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:54:31,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385540734] [2024-10-11 19:54:31,031 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 19:54:31,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:54:31,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:54:31,033 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:54:31,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-11 19:54:31,246 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 19:54:31,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:54:31,247 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 19:54:31,248 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:54:31,515 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:31,515 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:54:31,632 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:31,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385540734] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:54:31,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:54:31,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 16 [2024-10-11 19:54:31,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147624278] [2024-10-11 19:54:31,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:54:31,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-11 19:54:31,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:54:31,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-11 19:54:31,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2024-10-11 19:54:31,634 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-10-11 19:54:31,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 1834 transitions, 46665 flow. Second operand has 17 states, 17 states have (on average 8.117647058823529) internal successors, (138), 17 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:54:31,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:54:31,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-10-11 19:54:31,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:54:43,927 INFO L124 PetriNetUnfolderBase]: 11803/21442 cut-off events. [2024-10-11 19:54:43,927 INFO L125 PetriNetUnfolderBase]: For 601583/601595 co-relation queries the response was YES. [2024-10-11 19:54:44,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211855 conditions, 21442 events. 11803/21442 cut-off events. For 601583/601595 co-relation queries the response was YES. Maximal size of possible extension queue 1462. Compared 184497 event pairs, 885 based on Foata normal form. 56/21496 useless extension candidates. Maximal degree in co-relation 203965. Up to 9700 conditions per place. [2024-10-11 19:54:44,313 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 929 selfloop transitions, 1889 changer transitions 49/2870 dead transitions. [2024-10-11 19:54:44,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 2870 transitions, 79508 flow [2024-10-11 19:54:44,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-10-11 19:54:44,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-10-11 19:54:44,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 425 transitions. [2024-10-11 19:54:44,316 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5681818181818182 [2024-10-11 19:54:44,316 INFO L175 Difference]: Start difference. First operand has 232 places, 1834 transitions, 46665 flow. Second operand 34 states and 425 transitions. [2024-10-11 19:54:44,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 2870 transitions, 79508 flow