./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/rfi000_tso.i --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/pthread-wmm/rfi000_tso.i -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 5128c539cd3051e20c09e1924eb0951d5be697be251e10d3c281464ed4c436cd --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 19:36:24,552 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:36:24,614 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 19:36:24,619 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:36:24,621 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:36:24,643 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:36:24,644 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:36:24,644 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:36:24,645 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:36:24,645 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:36:24,646 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:36:24,646 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:36:24,647 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:36:24,647 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:36:24,647 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:36:24,648 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:36:24,648 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:36:24,648 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:36:24,649 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:36:24,649 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:36:24,649 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:36:24,650 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:36:24,650 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:36:24,651 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:36:24,651 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:36:24,651 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:36:24,652 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:36:24,652 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:36:24,652 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:36:24,653 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:36:24,653 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:36:24,653 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:36:24,653 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:36:24,654 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:36:24,654 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:36:24,654 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:36:24,655 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 19:36:24,655 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 19:36:24,655 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:36:24,655 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:36:24,655 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:36:24,656 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:36:24,656 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5128c539cd3051e20c09e1924eb0951d5be697be251e10d3c281464ed4c436cd [2024-10-11 19:36:24,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:36:24,947 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:36:24,952 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:36:24,954 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:36:24,954 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:36:24,955 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/rfi000_tso.i [2024-10-11 19:36:26,433 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:36:26,672 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:36:26,672 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/rfi000_tso.i [2024-10-11 19:36:26,688 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/cfd0a37b4/dbb4a7a8617a4963a0b77029e9928b22/FLAG622e99c68 [2024-10-11 19:36:26,997 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/cfd0a37b4/dbb4a7a8617a4963a0b77029e9928b22 [2024-10-11 19:36:27,000 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:36:27,001 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:36:27,002 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:36:27,003 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:36:27,009 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:36:27,010 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:36:26" (1/1) ... [2024-10-11 19:36:27,012 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47ac1e80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:36:27, skipping insertion in model container [2024-10-11 19:36:27,013 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:36:26" (1/1) ... [2024-10-11 19:36:27,055 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:36:27,523 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:36:27,540 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 19:36:27,600 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:36:27,680 INFO L204 MainTranslator]: Completed translation [2024-10-11 19:36:27,681 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:36:27 WrapperNode [2024-10-11 19:36:27,684 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:36:27,685 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 19:36:27,685 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 19:36:27,685 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 19:36:27,692 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:36:27" (1/1) ... [2024-10-11 19:36:27,736 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:36:27" (1/1) ... [2024-10-11 19:36:27,784 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 171 [2024-10-11 19:36:27,787 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 19:36:27,788 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 19:36:27,789 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 19:36:27,789 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 19:36:27,800 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:36:27" (1/1) ... [2024-10-11 19:36:27,800 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:36:27" (1/1) ... [2024-10-11 19:36:27,805 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:36:27" (1/1) ... [2024-10-11 19:36:27,834 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 19:36:27,834 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:36:27" (1/1) ... [2024-10-11 19:36:27,834 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:36:27" (1/1) ... [2024-10-11 19:36:27,849 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:36:27" (1/1) ... [2024-10-11 19:36:27,851 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:36:27" (1/1) ... [2024-10-11 19:36:27,852 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:36:27" (1/1) ... [2024-10-11 19:36:27,858 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:36:27" (1/1) ... [2024-10-11 19:36:27,861 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 19:36:27,866 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 19:36:27,867 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 19:36:27,867 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 19:36:27,868 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:36:27" (1/1) ... [2024-10-11 19:36:27,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:36:27,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:36:27,903 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 19:36:27,909 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 19:36:27,953 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 19:36:27,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 19:36:27,954 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-10-11 19:36:27,954 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-10-11 19:36:27,954 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-10-11 19:36:27,954 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-10-11 19:36:27,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 19:36:27,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 19:36:27,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 19:36:27,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 19:36:27,956 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 19:36:28,099 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 19:36:28,101 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 19:36:28,454 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 19:36:28,454 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 19:36:28,707 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 19:36:28,708 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-11 19:36:28,708 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:36:28 BoogieIcfgContainer [2024-10-11 19:36:28,708 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 19:36:28,711 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 19:36:28,711 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 19:36:28,715 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 19:36:28,715 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 07:36:26" (1/3) ... [2024-10-11 19:36:28,716 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19337b24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:36:28, skipping insertion in model container [2024-10-11 19:36:28,716 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:36:27" (2/3) ... [2024-10-11 19:36:28,717 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19337b24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:36:28, skipping insertion in model container [2024-10-11 19:36:28,717 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:36:28" (3/3) ... [2024-10-11 19:36:28,719 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi000_tso.i [2024-10-11 19:36:28,735 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 19:36:28,735 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-10-11 19:36:28,735 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 19:36:28,784 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 19:36:28,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 37 transitions, 82 flow [2024-10-11 19:36:28,852 INFO L124 PetriNetUnfolderBase]: 2/35 cut-off events. [2024-10-11 19:36:28,852 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:36:28,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 35 events. 2/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 63 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2024-10-11 19:36:28,856 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 37 transitions, 82 flow [2024-10-11 19:36:28,860 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 35 transitions, 76 flow [2024-10-11 19:36:28,873 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:36:28,883 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;@5548812b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:36:28,883 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-10-11 19:36:28,889 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:36:28,891 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2024-10-11 19:36:28,891 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:36:28,891 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:36:28,892 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:36:28,893 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 3 more)] === [2024-10-11 19:36:28,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:36:28,899 INFO L85 PathProgramCache]: Analyzing trace with hash -571450363, now seen corresponding path program 1 times [2024-10-11 19:36:28,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:36:28,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418147326] [2024-10-11 19:36:28,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:36:28,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:36:29,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:36:29,384 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 19:36:29,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:36:29,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418147326] [2024-10-11 19:36:29,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418147326] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:36:29,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:36:29,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 19:36:29,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294238186] [2024-10-11 19:36:29,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:36:29,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:36:29,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:36:29,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:36:29,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:36:29,430 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 37 [2024-10-11 19:36:29,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 35 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:36:29,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:36:29,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 37 [2024-10-11 19:36:29,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:36:29,718 INFO L124 PetriNetUnfolderBase]: 230/451 cut-off events. [2024-10-11 19:36:29,718 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:36:29,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 862 conditions, 451 events. 230/451 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2401 event pairs, 20 based on Foata normal form. 36/480 useless extension candidates. Maximal degree in co-relation 852. Up to 346 conditions per place. [2024-10-11 19:36:29,726 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 25 selfloop transitions, 2 changer transitions 2/41 dead transitions. [2024-10-11 19:36:29,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 41 transitions, 146 flow [2024-10-11 19:36:29,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:36:29,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:36:29,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2024-10-11 19:36:29,737 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6846846846846847 [2024-10-11 19:36:29,739 INFO L175 Difference]: Start difference. First operand has 40 places, 35 transitions, 76 flow. Second operand 3 states and 76 transitions. [2024-10-11 19:36:29,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 41 transitions, 146 flow [2024-10-11 19:36:29,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 41 transitions, 144 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:36:29,744 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 68 flow [2024-10-11 19:36:29,745 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2024-10-11 19:36:29,750 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2024-10-11 19:36:29,750 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 68 flow [2024-10-11 19:36:29,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:36:29,751 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:36:29,751 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:36:29,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 19:36:29,751 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 3 more)] === [2024-10-11 19:36:29,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:36:29,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1138514497, now seen corresponding path program 1 times [2024-10-11 19:36:29,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:36:29,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496902201] [2024-10-11 19:36:29,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:36:29,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:36:29,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:36:29,840 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 19:36:29,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:36:29,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496902201] [2024-10-11 19:36:29,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496902201] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:36:29,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:36:29,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 19:36:29,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636366264] [2024-10-11 19:36:29,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:36:29,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:36:29,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:36:29,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:36:29,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:36:29,844 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 37 [2024-10-11 19:36:29,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 19:36:29,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:36:29,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 37 [2024-10-11 19:36:29,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:36:30,015 INFO L124 PetriNetUnfolderBase]: 203/439 cut-off events. [2024-10-11 19:36:30,016 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-10-11 19:36:30,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 829 conditions, 439 events. 203/439 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2431 event pairs, 203 based on Foata normal form. 18/444 useless extension candidates. Maximal degree in co-relation 819. Up to 354 conditions per place. [2024-10-11 19:36:30,024 INFO L140 encePairwiseOnDemand]: 35/37 looper letters, 16 selfloop transitions, 1 changer transitions 1/29 dead transitions. [2024-10-11 19:36:30,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 29 transitions, 102 flow [2024-10-11 19:36:30,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:36:30,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:36:30,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2024-10-11 19:36:30,028 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5225225225225225 [2024-10-11 19:36:30,028 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 68 flow. Second operand 3 states and 58 transitions. [2024-10-11 19:36:30,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 29 transitions, 102 flow [2024-10-11 19:36:30,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 29 transitions, 98 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:36:30,029 INFO L231 Difference]: Finished difference. Result has 36 places, 28 transitions, 62 flow [2024-10-11 19:36:30,030 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=36, PETRI_TRANSITIONS=28} [2024-10-11 19:36:30,032 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -4 predicate places. [2024-10-11 19:36:30,032 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 28 transitions, 62 flow [2024-10-11 19:36:30,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 19:36:30,033 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:36:30,033 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:36:30,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 19:36:30,035 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 3 more)] === [2024-10-11 19:36:30,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:36:30,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1138513064, now seen corresponding path program 1 times [2024-10-11 19:36:30,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:36:30,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443596375] [2024-10-11 19:36:30,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:36:30,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:36:30,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:36:30,373 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 19:36:30,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:36:30,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443596375] [2024-10-11 19:36:30,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443596375] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:36:30,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:36:30,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:36:30,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981835584] [2024-10-11 19:36:30,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:36:30,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:36:30,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:36:30,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:36:30,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:36:30,382 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-10-11 19:36:30,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 28 transitions, 62 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 19:36:30,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:36:30,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-10-11 19:36:30,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:36:30,595 INFO L124 PetriNetUnfolderBase]: 246/508 cut-off events. [2024-10-11 19:36:30,596 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:36:30,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 969 conditions, 508 events. 246/508 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2470 event pairs, 38 based on Foata normal form. 28/528 useless extension candidates. Maximal degree in co-relation 963. Up to 259 conditions per place. [2024-10-11 19:36:30,600 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 35 selfloop transitions, 4 changer transitions 1/48 dead transitions. [2024-10-11 19:36:30,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 48 transitions, 184 flow [2024-10-11 19:36:30,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:36:30,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:36:30,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 86 transitions. [2024-10-11 19:36:30,603 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.581081081081081 [2024-10-11 19:36:30,604 INFO L175 Difference]: Start difference. First operand has 36 places, 28 transitions, 62 flow. Second operand 4 states and 86 transitions. [2024-10-11 19:36:30,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 48 transitions, 184 flow [2024-10-11 19:36:30,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 48 transitions, 183 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:36:30,605 INFO L231 Difference]: Finished difference. Result has 39 places, 30 transitions, 87 flow [2024-10-11 19:36:30,606 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=87, PETRI_PLACES=39, PETRI_TRANSITIONS=30} [2024-10-11 19:36:30,607 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -1 predicate places. [2024-10-11 19:36:30,607 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 30 transitions, 87 flow [2024-10-11 19:36:30,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 19:36:30,608 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:36:30,608 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:36:30,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 19:36:30,608 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 3 more)] === [2024-10-11 19:36:30,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:36:30,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1897973871, now seen corresponding path program 1 times [2024-10-11 19:36:30,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:36:30,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308053423] [2024-10-11 19:36:30,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:36:30,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:36:30,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:36:30,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:36:30,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:36:30,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308053423] [2024-10-11 19:36:30,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308053423] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:36:30,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:36:30,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 19:36:30,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482263396] [2024-10-11 19:36:30,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:36:30,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 19:36:30,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:36:30,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 19:36:30,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 19:36:30,933 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-10-11 19:36:30,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 30 transitions, 87 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:36:30,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:36:30,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-10-11 19:36:30,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:36:31,092 INFO L124 PetriNetUnfolderBase]: 114/240 cut-off events. [2024-10-11 19:36:31,093 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2024-10-11 19:36:31,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 566 conditions, 240 events. 114/240 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 825 event pairs, 26 based on Foata normal form. 18/252 useless extension candidates. Maximal degree in co-relation 557. Up to 101 conditions per place. [2024-10-11 19:36:31,095 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 29 selfloop transitions, 6 changer transitions 1/44 dead transitions. [2024-10-11 19:36:31,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 44 transitions, 192 flow [2024-10-11 19:36:31,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:36:31,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:36:31,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 93 transitions. [2024-10-11 19:36:31,097 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5027027027027027 [2024-10-11 19:36:31,097 INFO L175 Difference]: Start difference. First operand has 39 places, 30 transitions, 87 flow. Second operand 5 states and 93 transitions. [2024-10-11 19:36:31,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 44 transitions, 192 flow [2024-10-11 19:36:31,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 44 transitions, 183 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-10-11 19:36:31,099 INFO L231 Difference]: Finished difference. Result has 43 places, 30 transitions, 103 flow [2024-10-11 19:36:31,099 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=103, PETRI_PLACES=43, PETRI_TRANSITIONS=30} [2024-10-11 19:36:31,102 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 3 predicate places. [2024-10-11 19:36:31,102 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 30 transitions, 103 flow [2024-10-11 19:36:31,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:36:31,103 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:36:31,104 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:36:31,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 19:36:31,104 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 3 more)] === [2024-10-11 19:36:31,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:36:31,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1859928724, now seen corresponding path program 1 times [2024-10-11 19:36:31,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:36:31,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973233331] [2024-10-11 19:36:31,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:36:31,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:36:31,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:36:34,954 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 19:36:34,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:36:34,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973233331] [2024-10-11 19:36:34,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973233331] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:36:34,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:36:34,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-11 19:36:34,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925903680] [2024-10-11 19:36:34,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:36:34,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 19:36:34,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:36:34,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 19:36:34,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-11 19:36:34,980 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 37 [2024-10-11 19:36:34,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 30 transitions, 103 flow. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 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 19:36:34,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:36:34,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 37 [2024-10-11 19:36:34,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:36:35,606 INFO L124 PetriNetUnfolderBase]: 123/303 cut-off events. [2024-10-11 19:36:35,606 INFO L125 PetriNetUnfolderBase]: For 95/95 co-relation queries the response was YES. [2024-10-11 19:36:35,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 669 conditions, 303 events. 123/303 cut-off events. For 95/95 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1234 event pairs, 37 based on Foata normal form. 4/296 useless extension candidates. Maximal degree in co-relation 658. Up to 116 conditions per place. [2024-10-11 19:36:35,612 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 22 selfloop transitions, 9 changer transitions 17/60 dead transitions. [2024-10-11 19:36:35,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 60 transitions, 265 flow [2024-10-11 19:36:35,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 19:36:35,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 19:36:35,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-10-11 19:36:35,614 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4984984984984985 [2024-10-11 19:36:35,614 INFO L175 Difference]: Start difference. First operand has 43 places, 30 transitions, 103 flow. Second operand 9 states and 166 transitions. [2024-10-11 19:36:35,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 60 transitions, 265 flow [2024-10-11 19:36:35,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 60 transitions, 231 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-10-11 19:36:35,619 INFO L231 Difference]: Finished difference. Result has 51 places, 37 transitions, 136 flow [2024-10-11 19:36:35,620 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=136, PETRI_PLACES=51, PETRI_TRANSITIONS=37} [2024-10-11 19:36:35,620 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 11 predicate places. [2024-10-11 19:36:35,620 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 37 transitions, 136 flow [2024-10-11 19:36:35,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 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 19:36:35,622 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:36:35,622 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:36:35,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 19:36:35,622 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 3 more)] === [2024-10-11 19:36:35,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:36:35,623 INFO L85 PathProgramCache]: Analyzing trace with hash -970632960, now seen corresponding path program 2 times [2024-10-11 19:36:35,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:36:35,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965261642] [2024-10-11 19:36:35,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:36:35,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:36:35,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:36:36,049 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 19:36:36,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:36:36,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965261642] [2024-10-11 19:36:36,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965261642] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:36:36,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:36:36,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 19:36:36,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898715423] [2024-10-11 19:36:36,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:36:36,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 19:36:36,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:36:36,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 19:36:36,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 19:36:36,061 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-10-11 19:36:36,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 37 transitions, 136 flow. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:36:36,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:36:36,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-10-11 19:36:36,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:36:36,264 INFO L124 PetriNetUnfolderBase]: 210/485 cut-off events. [2024-10-11 19:36:36,265 INFO L125 PetriNetUnfolderBase]: For 153/153 co-relation queries the response was YES. [2024-10-11 19:36:36,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1194 conditions, 485 events. 210/485 cut-off events. For 153/153 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2303 event pairs, 91 based on Foata normal form. 4/474 useless extension candidates. Maximal degree in co-relation 1181. Up to 201 conditions per place. [2024-10-11 19:36:36,267 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 20 selfloop transitions, 2 changer transitions 26/59 dead transitions. [2024-10-11 19:36:36,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 59 transitions, 301 flow [2024-10-11 19:36:36,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:36:36,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:36:36,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 99 transitions. [2024-10-11 19:36:36,268 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5351351351351351 [2024-10-11 19:36:36,269 INFO L175 Difference]: Start difference. First operand has 51 places, 37 transitions, 136 flow. Second operand 5 states and 99 transitions. [2024-10-11 19:36:36,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 59 transitions, 301 flow [2024-10-11 19:36:36,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 59 transitions, 289 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-10-11 19:36:36,272 INFO L231 Difference]: Finished difference. Result has 53 places, 30 transitions, 103 flow [2024-10-11 19:36:36,273 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=103, PETRI_PLACES=53, PETRI_TRANSITIONS=30} [2024-10-11 19:36:36,273 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 13 predicate places. [2024-10-11 19:36:36,274 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 30 transitions, 103 flow [2024-10-11 19:36:36,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:36:36,275 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:36:36,275 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:36:36,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 19:36:36,275 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 3 more)] === [2024-10-11 19:36:36,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:36:36,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1125913088, now seen corresponding path program 3 times [2024-10-11 19:36:36,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:36:36,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129546543] [2024-10-11 19:36:36,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:36:36,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:36:36,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:36:40,989 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 19:36:40,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:36:40,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129546543] [2024-10-11 19:36:40,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129546543] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:36:40,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:36:40,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-11 19:36:40,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80315018] [2024-10-11 19:36:40,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:36:40,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 19:36:40,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:36:40,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 19:36:40,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-10-11 19:36:41,008 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 37 [2024-10-11 19:36:41,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 30 transitions, 103 flow. Second operand has 12 states, 12 states have (on average 14.333333333333334) internal successors, (172), 12 states have internal predecessors, (172), 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 19:36:41,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:36:41,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 37 [2024-10-11 19:36:41,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:36:41,512 INFO L124 PetriNetUnfolderBase]: 35/99 cut-off events. [2024-10-11 19:36:41,512 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-10-11 19:36:41,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 99 events. 35/99 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 209 event pairs, 10 based on Foata normal form. 4/98 useless extension candidates. Maximal degree in co-relation 231. Up to 35 conditions per place. [2024-10-11 19:36:41,513 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 0 selfloop transitions, 0 changer transitions 38/38 dead transitions. [2024-10-11 19:36:41,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 38 transitions, 175 flow [2024-10-11 19:36:41,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 19:36:41,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 19:36:41,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-10-11 19:36:41,515 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43843843843843844 [2024-10-11 19:36:41,515 INFO L175 Difference]: Start difference. First operand has 53 places, 30 transitions, 103 flow. Second operand 9 states and 146 transitions. [2024-10-11 19:36:41,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 38 transitions, 175 flow [2024-10-11 19:36:41,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 38 transitions, 155 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-10-11 19:36:41,518 INFO L231 Difference]: Finished difference. Result has 46 places, 0 transitions, 0 flow [2024-10-11 19:36:41,519 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=46, PETRI_TRANSITIONS=0} [2024-10-11 19:36:41,520 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 6 predicate places. [2024-10-11 19:36:41,520 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 0 transitions, 0 flow [2024-10-11 19:36:41,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.333333333333334) internal successors, (172), 12 states have internal predecessors, (172), 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 19:36:41,523 INFO L782 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 6 remaining) [2024-10-11 19:36:41,524 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2024-10-11 19:36:41,524 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 6 remaining) [2024-10-11 19:36:41,525 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-10-11 19:36:41,525 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2024-10-11 19:36:41,525 INFO L782 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2024-10-11 19:36:41,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 19:36:41,525 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1] [2024-10-11 19:36:41,531 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-11 19:36:41,531 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-11 19:36:41,537 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 07:36:41 BasicIcfg [2024-10-11 19:36:41,538 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-11 19:36:41,538 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-11 19:36:41,538 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-11 19:36:41,539 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-11 19:36:41,539 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:36:28" (3/4) ... [2024-10-11 19:36:41,540 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-11 19:36:41,543 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2024-10-11 19:36:41,543 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2024-10-11 19:36:41,550 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 78 nodes and edges [2024-10-11 19:36:41,551 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2024-10-11 19:36:41,551 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-10-11 19:36:41,551 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-11 19:36:41,648 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-11 19:36:41,649 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-11 19:36:41,649 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-11 19:36:41,649 INFO L158 Benchmark]: Toolchain (without parser) took 14648.28ms. Allocated memory was 153.1MB in the beginning and 526.4MB in the end (delta: 373.3MB). Free memory was 84.6MB in the beginning and 241.6MB in the end (delta: -157.0MB). Peak memory consumption was 218.0MB. Max. memory is 16.1GB. [2024-10-11 19:36:41,650 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 113.2MB. Free memory is still 74.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 19:36:41,650 INFO L158 Benchmark]: CACSL2BoogieTranslator took 681.93ms. Allocated memory is still 153.1MB. Free memory was 84.6MB in the beginning and 119.3MB in the end (delta: -34.8MB). Peak memory consumption was 32.6MB. Max. memory is 16.1GB. [2024-10-11 19:36:41,650 INFO L158 Benchmark]: Boogie Procedure Inliner took 102.76ms. Allocated memory is still 153.1MB. Free memory was 119.3MB in the beginning and 115.9MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-11 19:36:41,650 INFO L158 Benchmark]: Boogie Preprocessor took 76.68ms. Allocated memory is still 153.1MB. Free memory was 115.9MB in the beginning and 111.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-11 19:36:41,651 INFO L158 Benchmark]: RCFGBuilder took 843.13ms. Allocated memory is still 153.1MB. Free memory was 111.7MB in the beginning and 115.2MB in the end (delta: -3.5MB). Peak memory consumption was 69.7MB. Max. memory is 16.1GB. [2024-10-11 19:36:41,651 INFO L158 Benchmark]: TraceAbstraction took 12826.52ms. Allocated memory was 153.1MB in the beginning and 526.4MB in the end (delta: 373.3MB). Free memory was 114.3MB in the beginning and 245.8MB in the end (delta: -131.5MB). Peak memory consumption was 241.6MB. Max. memory is 16.1GB. [2024-10-11 19:36:41,651 INFO L158 Benchmark]: Witness Printer took 110.63ms. Allocated memory is still 526.4MB. Free memory was 245.8MB in the beginning and 241.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-11 19:36:41,652 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 113.2MB. Free memory is still 74.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 681.93ms. Allocated memory is still 153.1MB. Free memory was 84.6MB in the beginning and 119.3MB in the end (delta: -34.8MB). Peak memory consumption was 32.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 102.76ms. Allocated memory is still 153.1MB. Free memory was 119.3MB in the beginning and 115.9MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 76.68ms. Allocated memory is still 153.1MB. Free memory was 115.9MB in the beginning and 111.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 843.13ms. Allocated memory is still 153.1MB. Free memory was 111.7MB in the beginning and 115.2MB in the end (delta: -3.5MB). Peak memory consumption was 69.7MB. Max. memory is 16.1GB. * TraceAbstraction took 12826.52ms. Allocated memory was 153.1MB in the beginning and 526.4MB in the end (delta: 373.3MB). Free memory was 114.3MB in the beginning and 245.8MB in the end (delta: -131.5MB). Peak memory consumption was 241.6MB. Max. memory is 16.1GB. * Witness Printer took 110.63ms. Allocated memory is still 526.4MB. Free memory was 245.8MB in the beginning and 241.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 824]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 17]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 55 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 12.7s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 213 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 198 mSDsluCounter, 99 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 93 mSDsCounter, 38 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 615 IncrementalHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 38 mSolverCounterUnsat, 6 mSDtfsCounter, 615 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=136occurred in iteration=5, InterpolantAutomatonStates: 38, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 9.3s InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 119 ConstructedInterpolants, 0 QuantifiedInterpolants, 1048 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-11 19:36:41,685 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE