./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-memsafety/fillarray1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-memsafety/fillarray1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0d955c319d131d508b8618ef571ba23da865842e29989ccda626762130a6dda2 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 18:24:48,650 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 18:24:48,755 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 18:24:48,759 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 18:24:48,761 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 18:24:48,782 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 18:24:48,783 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 18:24:48,783 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 18:24:48,784 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 18:24:48,784 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 18:24:48,785 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 18:24:48,785 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 18:24:48,786 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 18:24:48,787 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 18:24:48,788 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 18:24:48,789 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 18:24:48,789 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 18:24:48,793 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 18:24:48,793 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 18:24:48,794 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 18:24:48,794 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 18:24:48,794 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 18:24:48,794 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 18:24:48,795 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 18:24:48,795 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 18:24:48,795 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 18:24:48,795 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 18:24:48,796 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 18:24:48,796 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 18:24:48,796 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 18:24:48,796 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 18:24:48,796 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 18:24:48,797 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 18:24:48,797 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:24:48,797 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 18:24:48,797 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 18:24:48,797 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 18:24:48,798 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 18:24:48,798 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 18:24:48,798 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 18:24:48,798 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 18:24:48,799 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 18:24:48,800 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d955c319d131d508b8618ef571ba23da865842e29989ccda626762130a6dda2 [2024-11-10 18:24:49,075 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 18:24:49,095 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 18:24:49,099 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 18:24:49,100 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 18:24:49,101 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 18:24:49,102 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-memsafety/fillarray1.i [2024-11-10 18:24:50,624 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 18:24:50,905 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 18:24:50,908 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-memsafety/fillarray1.i [2024-11-10 18:24:50,934 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f1f0214e/d8dc73730639410682ab7a99b095424f/FLAG1acdba385 [2024-11-10 18:24:50,951 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f1f0214e/d8dc73730639410682ab7a99b095424f [2024-11-10 18:24:50,954 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 18:24:50,956 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 18:24:50,958 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 18:24:50,958 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 18:24:50,965 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 18:24:50,966 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:24:50" (1/1) ... [2024-11-10 18:24:50,967 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2870a741 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:50, skipping insertion in model container [2024-11-10 18:24:50,967 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:24:50" (1/1) ... [2024-11-10 18:24:51,019 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 18:24:51,616 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 18:24:51,630 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 18:24:51,636 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 18:24:51,644 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:24:51,654 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 18:24:51,718 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:24:51,777 INFO L204 MainTranslator]: Completed translation [2024-11-10 18:24:51,778 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:51 WrapperNode [2024-11-10 18:24:51,778 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 18:24:51,779 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 18:24:51,779 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 18:24:51,780 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 18:24:51,787 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:51" (1/1) ... [2024-11-10 18:24:51,807 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:51" (1/1) ... [2024-11-10 18:24:51,834 INFO L138 Inliner]: procedures = 261, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 43 [2024-11-10 18:24:51,837 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 18:24:51,838 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 18:24:51,838 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 18:24:51,838 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 18:24:51,850 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:51" (1/1) ... [2024-11-10 18:24:51,850 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:51" (1/1) ... [2024-11-10 18:24:51,854 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:51" (1/1) ... [2024-11-10 18:24:51,868 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 2 writes are split as follows [2]. [2024-11-10 18:24:51,868 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:51" (1/1) ... [2024-11-10 18:24:51,868 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:51" (1/1) ... [2024-11-10 18:24:51,873 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:51" (1/1) ... [2024-11-10 18:24:51,874 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:51" (1/1) ... [2024-11-10 18:24:51,875 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:51" (1/1) ... [2024-11-10 18:24:51,876 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:51" (1/1) ... [2024-11-10 18:24:51,879 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 18:24:51,880 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 18:24:51,880 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 18:24:51,880 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 18:24:51,881 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:51" (1/1) ... [2024-11-10 18:24:51,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:24:51,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:24:51,919 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-10 18:24:51,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-10 18:24:51,972 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-10 18:24:51,973 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-10 18:24:51,973 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-10 18:24:51,974 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-10 18:24:51,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-10 18:24:51,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 18:24:51,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 18:24:51,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 18:24:51,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 18:24:51,977 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 18:24:52,141 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 18:24:52,143 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 18:24:52,372 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 18:24:52,372 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 18:24:52,476 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 18:24:52,476 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 18:24:52,477 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:24:52 BoogieIcfgContainer [2024-11-10 18:24:52,477 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 18:24:52,479 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 18:24:52,479 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 18:24:52,486 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 18:24:52,486 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 06:24:50" (1/3) ... [2024-11-10 18:24:52,487 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77a543f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:24:52, skipping insertion in model container [2024-11-10 18:24:52,488 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:51" (2/3) ... [2024-11-10 18:24:52,488 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77a543f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:24:52, skipping insertion in model container [2024-11-10 18:24:52,489 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:24:52" (3/3) ... [2024-11-10 18:24:52,490 INFO L112 eAbstractionObserver]: Analyzing ICFG fillarray1.i [2024-11-10 18:24:52,521 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 18:24:52,521 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-10 18:24:52,521 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 18:24:52,591 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 18:24:52,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 44 transitions, 96 flow [2024-11-10 18:24:52,696 INFO L124 PetriNetUnfolderBase]: 8/45 cut-off events. [2024-11-10 18:24:52,696 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 18:24:52,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 45 events. 8/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 110 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 40. Up to 3 conditions per place. [2024-11-10 18:24:52,701 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 44 transitions, 96 flow [2024-11-10 18:24:52,707 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 42 transitions, 90 flow [2024-11-10 18:24:52,719 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 18:24:52,729 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;@3c5ed451, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 18:24:52,730 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-11-10 18:24:52,734 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 18:24:52,734 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-11-10 18:24:52,734 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 18:24:52,735 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:52,735 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 18:24:52,736 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 11 more)] === [2024-11-10 18:24:52,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:52,743 INFO L85 PathProgramCache]: Analyzing trace with hash 6357461, now seen corresponding path program 1 times [2024-11-10 18:24:52,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:52,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890662836] [2024-11-10 18:24:52,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:52,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:52,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:52,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:24:52,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:52,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890662836] [2024-11-10 18:24:52,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890662836] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:24:52,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:24:52,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 18:24:52,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977087958] [2024-11-10 18:24:52,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:24:52,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:24:52,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:53,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:24:53,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:24:53,042 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 44 [2024-11-10 18:24:53,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 42 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:24:53,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:24:53,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 44 [2024-11-10 18:24:53,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:24:53,203 INFO L124 PetriNetUnfolderBase]: 121/340 cut-off events. [2024-11-10 18:24:53,207 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 18:24:53,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 557 conditions, 340 events. 121/340 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2086 event pairs, 87 based on Foata normal form. 78/333 useless extension candidates. Maximal degree in co-relation 540. Up to 161 conditions per place. [2024-11-10 18:24:53,217 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 18 selfloop transitions, 3 changer transitions 2/45 dead transitions. [2024-11-10 18:24:53,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 45 transitions, 142 flow [2024-11-10 18:24:53,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:24:53,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:24:53,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2024-11-10 18:24:53,233 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7878787878787878 [2024-11-10 18:24:53,235 INFO L175 Difference]: Start difference. First operand has 40 places, 42 transitions, 90 flow. Second operand 3 states and 104 transitions. [2024-11-10 18:24:53,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 45 transitions, 142 flow [2024-11-10 18:24:53,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 45 transitions, 140 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 18:24:53,244 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 89 flow [2024-11-10 18:24:53,246 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=89, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2024-11-10 18:24:53,252 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2024-11-10 18:24:53,252 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 89 flow [2024-11-10 18:24:53,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:24:53,253 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:53,255 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:24:53,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 18:24:53,255 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 11 more)] === [2024-11-10 18:24:53,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:53,256 INFO L85 PathProgramCache]: Analyzing trace with hash 502518562, now seen corresponding path program 1 times [2024-11-10 18:24:53,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:53,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945838530] [2024-11-10 18:24:53,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:53,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:53,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:53,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:24:53,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:53,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945838530] [2024-11-10 18:24:53,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945838530] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:24:53,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:24:53,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:24:53,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924920692] [2024-11-10 18:24:53,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:24:53,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:24:53,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:53,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:24:53,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:24:53,364 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 44 [2024-11-10 18:24:53,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:24:53,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:24:53,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 44 [2024-11-10 18:24:53,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:24:53,466 INFO L124 PetriNetUnfolderBase]: 121/321 cut-off events. [2024-11-10 18:24:53,466 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-11-10 18:24:53,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 571 conditions, 321 events. 121/321 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1893 event pairs, 87 based on Foata normal form. 0/260 useless extension candidates. Maximal degree in co-relation 556. Up to 160 conditions per place. [2024-11-10 18:24:53,473 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 19 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2024-11-10 18:24:53,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 42 transitions, 141 flow [2024-11-10 18:24:53,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:24:53,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:24:53,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2024-11-10 18:24:53,475 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6893939393939394 [2024-11-10 18:24:53,475 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 89 flow. Second operand 3 states and 91 transitions. [2024-11-10 18:24:53,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 42 transitions, 141 flow [2024-11-10 18:24:53,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 42 transitions, 130 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-10 18:24:53,481 INFO L231 Difference]: Finished difference. Result has 39 places, 36 transitions, 80 flow [2024-11-10 18:24:53,481 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=39, PETRI_TRANSITIONS=36} [2024-11-10 18:24:53,482 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -1 predicate places. [2024-11-10 18:24:53,482 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 36 transitions, 80 flow [2024-11-10 18:24:53,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:24:53,482 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:53,483 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:24:53,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 18:24:53,483 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 11 more)] === [2024-11-10 18:24:53,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:53,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1601793614, now seen corresponding path program 1 times [2024-11-10 18:24:53,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:53,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968507786] [2024-11-10 18:24:53,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:53,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:53,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:53,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:24:53,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:53,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968507786] [2024-11-10 18:24:53,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968507786] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:24:53,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:24:53,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:24:53,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556053267] [2024-11-10 18:24:53,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:24:53,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:24:53,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:53,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:24:53,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:24:53,567 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 44 [2024-11-10 18:24:53,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:24:53,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:24:53,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 44 [2024-11-10 18:24:53,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:24:53,646 INFO L124 PetriNetUnfolderBase]: 121/305 cut-off events. [2024-11-10 18:24:53,646 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-10 18:24:53,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 536 conditions, 305 events. 121/305 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1753 event pairs, 87 based on Foata normal form. 0/261 useless extension candidates. Maximal degree in co-relation 524. Up to 160 conditions per place. [2024-11-10 18:24:53,651 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 19 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2024-11-10 18:24:53,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 41 transitions, 132 flow [2024-11-10 18:24:53,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:24:53,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:24:53,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2024-11-10 18:24:53,653 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6893939393939394 [2024-11-10 18:24:53,653 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 80 flow. Second operand 3 states and 91 transitions. [2024-11-10 18:24:53,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 41 transitions, 132 flow [2024-11-10 18:24:53,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 41 transitions, 128 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 18:24:53,655 INFO L231 Difference]: Finished difference. Result has 38 places, 35 transitions, 78 flow [2024-11-10 18:24:53,655 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=38, PETRI_TRANSITIONS=35} [2024-11-10 18:24:53,658 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2024-11-10 18:24:53,658 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 35 transitions, 78 flow [2024-11-10 18:24:53,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:24:53,659 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:53,660 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:24:53,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 18:24:53,660 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 11 more)] === [2024-11-10 18:24:53,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:53,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1946110165, now seen corresponding path program 1 times [2024-11-10 18:24:53,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:53,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196006614] [2024-11-10 18:24:53,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:53,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:53,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 18:24:53,713 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 18:24:53,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 18:24:53,764 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 18:24:53,765 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 18:24:53,766 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 14 remaining) [2024-11-10 18:24:53,768 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (12 of 14 remaining) [2024-11-10 18:24:53,769 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE (11 of 14 remaining) [2024-11-10 18:24:53,769 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (10 of 14 remaining) [2024-11-10 18:24:53,770 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE (9 of 14 remaining) [2024-11-10 18:24:53,772 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 14 remaining) [2024-11-10 18:24:53,772 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 14 remaining) [2024-11-10 18:24:53,772 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 14 remaining) [2024-11-10 18:24:53,772 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 14 remaining) [2024-11-10 18:24:53,772 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 14 remaining) [2024-11-10 18:24:53,773 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 14 remaining) [2024-11-10 18:24:53,773 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 14 remaining) [2024-11-10 18:24:53,773 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 14 remaining) [2024-11-10 18:24:53,773 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 14 remaining) [2024-11-10 18:24:53,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 18:24:53,777 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-10 18:24:53,815 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-10 18:24:53,815 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-10 18:24:53,821 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 06:24:53 BasicIcfg [2024-11-10 18:24:53,822 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-10 18:24:53,823 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-10 18:24:53,823 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-10 18:24:53,824 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-10 18:24:53,824 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:24:52" (3/4) ... [2024-11-10 18:24:53,825 INFO L137 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-10 18:24:53,884 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-10 18:24:53,885 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-10 18:24:53,886 INFO L158 Benchmark]: Toolchain (without parser) took 2929.41ms. Allocated memory was 165.7MB in the beginning and 203.4MB in the end (delta: 37.7MB). Free memory was 96.4MB in the beginning and 82.9MB in the end (delta: 13.4MB). Peak memory consumption was 52.2MB. Max. memory is 16.1GB. [2024-11-10 18:24:53,886 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 96.5MB. Free memory was 51.0MB in the beginning and 50.9MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 18:24:53,886 INFO L158 Benchmark]: CACSL2BoogieTranslator took 820.06ms. Allocated memory is still 165.7MB. Free memory was 96.4MB in the beginning and 117.3MB in the end (delta: -21.0MB). Peak memory consumption was 11.5MB. Max. memory is 16.1GB. [2024-11-10 18:24:53,887 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.07ms. Allocated memory is still 165.7MB. Free memory was 117.3MB in the beginning and 115.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 18:24:53,887 INFO L158 Benchmark]: Boogie Preprocessor took 41.20ms. Allocated memory is still 165.7MB. Free memory was 115.2MB in the beginning and 113.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 18:24:53,887 INFO L158 Benchmark]: IcfgBuilder took 597.16ms. Allocated memory is still 165.7MB. Free memory was 113.2MB in the beginning and 90.1MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-11-10 18:24:53,888 INFO L158 Benchmark]: TraceAbstraction took 1343.86ms. Allocated memory was 165.7MB in the beginning and 203.4MB in the end (delta: 37.7MB). Free memory was 89.5MB in the beginning and 86.1MB in the end (delta: 3.5MB). Peak memory consumption was 42.3MB. Max. memory is 16.1GB. [2024-11-10 18:24:53,888 INFO L158 Benchmark]: Witness Printer took 61.58ms. Allocated memory is still 203.4MB. Free memory was 86.1MB in the beginning and 82.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-10 18:24:53,892 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 96.5MB. Free memory was 51.0MB in the beginning and 50.9MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 820.06ms. Allocated memory is still 165.7MB. Free memory was 96.4MB in the beginning and 117.3MB in the end (delta: -21.0MB). Peak memory consumption was 11.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.07ms. Allocated memory is still 165.7MB. Free memory was 117.3MB in the beginning and 115.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.20ms. Allocated memory is still 165.7MB. Free memory was 115.2MB in the beginning and 113.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 597.16ms. Allocated memory is still 165.7MB. Free memory was 113.2MB in the beginning and 90.1MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 1343.86ms. Allocated memory was 165.7MB in the beginning and 203.4MB in the end (delta: 37.7MB). Free memory was 89.5MB in the beginning and 86.1MB in the end (delta: 3.5MB). Peak memory consumption was 42.3MB. Max. memory is 16.1GB. * Witness Printer took 61.58ms. Allocated memory is still 203.4MB. Free memory was 86.1MB in the beginning and 82.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L1037] 0 int size; [L1038] 0 int ind; [L1039] 0 int j = 2, i = 1; [L1040] 0 int x, y, z; [L1068] 0 size = __VERIFIER_nondet_int() [L1069] COND FALSE 0 !(size < 1 || size > 20) [L1072] 0 int *a = (int *)malloc(size); [L1073] 0 pthread_t id1, id2; [L1074] 0 ind = 0 [L1075] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, a) VAL [\old(arg)={-2:0}, \old(argc)=6, \old(argv)={4:5}, a={-2:0}, argc=6, i=1, id1=-1, ind=0, j=2, size=2, x=0, y=0, z=0] [L1042] 1 x = 1 [L1043] 1 y = 1 [L1044] 1 int *a = (int *)arg; VAL [\old(arg)={-2:0}, a={-2:0}, arg={-2:0}, i=1, ind=0, j=2, size=2, x=1, y=1, z=0] [L1045] COND FALSE 1 !(y == 1 && z) VAL [\old(arg)={-2:0}, a={-2:0}, arg={-2:0}, i=1, ind=0, j=2, size=2, x=1, y=1, z=0] [L1047] COND TRUE 1 ind < size - 1 [L1048] 1 ++ind VAL [\old(arg)={-2:0}, a={-2:0}, arg={-2:0}, i=1, ind=1, j=2, size=2, x=1, y=1, z=0] [L1049] 1 a[ind] = i - UnprovableResult [Line: 1067]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1077]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1077]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1077]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1075]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1076]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 58 locations, 14 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: 1.2s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 44 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 28 mSDsluCounter, 4 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 93 IncrementalHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 4 mSDtfsCounter, 93 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred in iteration=0, InterpolantAutomatonStates: 9, 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, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 44 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 RESULT: Ultimate proved your program to be incorrect! [2024-11-10 18:24:53,923 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)