./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-memsafety/fillarray.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/fillarray.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 042c5199cb977bee0e9fb33f98d35f27e793036e412b430f7152f110aa730c52 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 18:24:47,042 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 18:24:47,112 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 18:24:47,118 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 18:24:47,122 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 18:24:47,158 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 18:24:47,159 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 18:24:47,160 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 18:24:47,161 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 18:24:47,162 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 18:24:47,162 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 18:24:47,163 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 18:24:47,164 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 18:24:47,164 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 18:24:47,166 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 18:24:47,166 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 18:24:47,167 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 18:24:47,167 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 18:24:47,167 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 18:24:47,169 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 18:24:47,169 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 18:24:47,170 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 18:24:47,170 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 18:24:47,170 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 18:24:47,173 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 18:24:47,173 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 18:24:47,174 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 18:24:47,174 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 18:24:47,174 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 18:24:47,174 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 18:24:47,175 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 18:24:47,176 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 18:24:47,176 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 18:24:47,176 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:24:47,176 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 18:24:47,177 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 18:24:47,177 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 18:24:47,177 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 18:24:47,178 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 18:24:47,178 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 18:24:47,178 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 18:24:47,178 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 18:24:47,179 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 042c5199cb977bee0e9fb33f98d35f27e793036e412b430f7152f110aa730c52 [2024-11-10 18:24:47,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 18:24:47,486 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 18:24:47,490 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 18:24:47,491 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 18:24:47,492 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 18:24:47,493 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-memsafety/fillarray.i [2024-11-10 18:24:49,087 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 18:24:49,361 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 18:24:49,362 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-memsafety/fillarray.i [2024-11-10 18:24:49,377 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f1009f3a/ab6e565eae7d499d87e56d0806fa4d08/FLAG331cfd67b [2024-11-10 18:24:49,396 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f1009f3a/ab6e565eae7d499d87e56d0806fa4d08 [2024-11-10 18:24:49,399 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 18:24:49,401 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 18:24:49,402 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 18:24:49,402 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 18:24:49,407 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 18:24:49,408 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:24:49" (1/1) ... [2024-11-10 18:24:49,409 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e1d4119 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:49, skipping insertion in model container [2024-11-10 18:24:49,409 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:24:49" (1/1) ... [2024-11-10 18:24:49,486 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 18:24:49,821 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 18:24:49,831 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 18:24:49,836 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 18:24:49,843 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:24:49,853 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 18:24:49,888 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:24:49,937 INFO L204 MainTranslator]: Completed translation [2024-11-10 18:24:49,937 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:49 WrapperNode [2024-11-10 18:24:49,938 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 18:24:49,939 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 18:24:49,939 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 18:24:49,939 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 18:24:49,946 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:49" (1/1) ... [2024-11-10 18:24:49,970 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:49" (1/1) ... [2024-11-10 18:24:50,000 INFO L138 Inliner]: procedures = 261, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 40 [2024-11-10 18:24:50,001 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 18:24:50,002 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 18:24:50,002 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 18:24:50,003 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 18:24:50,012 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:49" (1/1) ... [2024-11-10 18:24:50,013 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:49" (1/1) ... [2024-11-10 18:24:50,020 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:49" (1/1) ... [2024-11-10 18:24:50,048 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 18:24:50,049 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:49" (1/1) ... [2024-11-10 18:24:50,050 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:49" (1/1) ... [2024-11-10 18:24:50,059 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:49" (1/1) ... [2024-11-10 18:24:50,061 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:49" (1/1) ... [2024-11-10 18:24:50,063 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:49" (1/1) ... [2024-11-10 18:24:50,064 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:49" (1/1) ... [2024-11-10 18:24:50,070 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 18:24:50,071 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 18:24:50,072 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 18:24:50,072 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 18:24:50,073 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:49" (1/1) ... [2024-11-10 18:24:50,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:24:50,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:24:50,128 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 18:24:50,134 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 18:24:50,189 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-10 18:24:50,190 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-10 18:24:50,190 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-10 18:24:50,190 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-10 18:24:50,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-10 18:24:50,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 18:24:50,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 18:24:50,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 18:24:50,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 18:24:50,192 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 18:24:50,351 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 18:24:50,353 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 18:24:50,570 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 18:24:50,573 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 18:24:50,673 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 18:24:50,673 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 18:24:50,674 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:24:50 BoogieIcfgContainer [2024-11-10 18:24:50,674 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 18:24:50,676 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 18:24:50,676 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 18:24:50,680 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 18:24:50,680 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 06:24:49" (1/3) ... [2024-11-10 18:24:50,681 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@197bf8d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:24:50, skipping insertion in model container [2024-11-10 18:24:50,681 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:49" (2/3) ... [2024-11-10 18:24:50,681 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@197bf8d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:24:50, skipping insertion in model container [2024-11-10 18:24:50,681 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:24:50" (3/3) ... [2024-11-10 18:24:50,683 INFO L112 eAbstractionObserver]: Analyzing ICFG fillarray.i [2024-11-10 18:24:50,699 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 18:24:50,699 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-10 18:24:50,699 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 18:24:50,747 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 18:24:50,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 36 transitions, 80 flow [2024-11-10 18:24:50,828 INFO L124 PetriNetUnfolderBase]: 4/37 cut-off events. [2024-11-10 18:24:50,828 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 18:24:50,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 37 events. 4/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 88 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2024-11-10 18:24:50,833 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 36 transitions, 80 flow [2024-11-10 18:24:50,839 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 34 transitions, 74 flow [2024-11-10 18:24:50,850 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 18:24:50,860 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;@43c5c39, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 18:24:50,860 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-11-10 18:24:50,869 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 18:24:50,871 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-11-10 18:24:50,871 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 18:24:50,871 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:50,872 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 18:24:50,872 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 18:24:50,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:50,878 INFO L85 PathProgramCache]: Analyzing trace with hash 5338892, now seen corresponding path program 1 times [2024-11-10 18:24:50,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:50,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309323793] [2024-11-10 18:24:50,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:50,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:51,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:51,120 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 18:24:51,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:51,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309323793] [2024-11-10 18:24:51,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309323793] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:24:51,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:24:51,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 18:24:51,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808237287] [2024-11-10 18:24:51,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:24:51,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:24:51,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:51,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:24:51,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:24:51,214 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 36 [2024-11-10 18:24:51,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 34 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 18:24:51,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:24:51,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 36 [2024-11-10 18:24:51,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:24:51,374 INFO L124 PetriNetUnfolderBase]: 128/313 cut-off events. [2024-11-10 18:24:51,374 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 18:24:51,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 530 conditions, 313 events. 128/313 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1680 event pairs, 87 based on Foata normal form. 42/289 useless extension candidates. Maximal degree in co-relation 513. Up to 161 conditions per place. [2024-11-10 18:24:51,381 INFO L140 encePairwiseOnDemand]: 30/36 looper letters, 18 selfloop transitions, 3 changer transitions 2/39 dead transitions. [2024-11-10 18:24:51,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 39 transitions, 130 flow [2024-11-10 18:24:51,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:24:51,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:24:51,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2024-11-10 18:24:51,397 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7592592592592593 [2024-11-10 18:24:51,399 INFO L175 Difference]: Start difference. First operand has 36 places, 34 transitions, 74 flow. Second operand 3 states and 82 transitions. [2024-11-10 18:24:51,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 39 transitions, 130 flow [2024-11-10 18:24:51,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 39 transitions, 128 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 18:24:51,407 INFO L231 Difference]: Finished difference. Result has 37 places, 31 transitions, 77 flow [2024-11-10 18:24:51,409 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=77, PETRI_PLACES=37, PETRI_TRANSITIONS=31} [2024-11-10 18:24:51,415 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 1 predicate places. [2024-11-10 18:24:51,416 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 31 transitions, 77 flow [2024-11-10 18:24:51,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 18:24:51,417 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:51,417 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:24:51,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 18:24:51,418 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 11 more)] === [2024-11-10 18:24:51,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:51,419 INFO L85 PathProgramCache]: Analyzing trace with hash 151990541, now seen corresponding path program 1 times [2024-11-10 18:24:51,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:51,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258820452] [2024-11-10 18:24:51,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:51,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:51,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:51,569 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 18:24:51,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:51,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258820452] [2024-11-10 18:24:51,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258820452] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:24:51,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:24:51,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 18:24:51,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165924793] [2024-11-10 18:24:51,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:24:51,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 18:24:51,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:51,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 18:24:51,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 18:24:51,606 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 36 [2024-11-10 18:24:51,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 31 transitions, 77 flow. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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 18:24:51,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:24:51,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 36 [2024-11-10 18:24:51,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:24:51,757 INFO L124 PetriNetUnfolderBase]: 147/351 cut-off events. [2024-11-10 18:24:51,758 INFO L125 PetriNetUnfolderBase]: For 104/112 co-relation queries the response was YES. [2024-11-10 18:24:51,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 667 conditions, 351 events. 147/351 cut-off events. For 104/112 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1807 event pairs, 7 based on Foata normal form. 0/335 useless extension candidates. Maximal degree in co-relation 652. Up to 100 conditions per place. [2024-11-10 18:24:51,763 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 31 selfloop transitions, 6 changer transitions 0/51 dead transitions. [2024-11-10 18:24:51,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 51 transitions, 196 flow [2024-11-10 18:24:51,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 18:24:51,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 18:24:51,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-11-10 18:24:51,766 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6342592592592593 [2024-11-10 18:24:51,766 INFO L175 Difference]: Start difference. First operand has 37 places, 31 transitions, 77 flow. Second operand 6 states and 137 transitions. [2024-11-10 18:24:51,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 51 transitions, 196 flow [2024-11-10 18:24:51,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 51 transitions, 182 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-10 18:24:51,770 INFO L231 Difference]: Finished difference. Result has 42 places, 33 transitions, 100 flow [2024-11-10 18:24:51,770 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=100, PETRI_PLACES=42, PETRI_TRANSITIONS=33} [2024-11-10 18:24:51,771 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 6 predicate places. [2024-11-10 18:24:51,771 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 33 transitions, 100 flow [2024-11-10 18:24:51,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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 18:24:51,771 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:51,772 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:24:51,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 18:24:51,772 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 11 more)] === [2024-11-10 18:24:51,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:51,777 INFO L85 PathProgramCache]: Analyzing trace with hash 151990542, now seen corresponding path program 1 times [2024-11-10 18:24:51,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:51,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811958220] [2024-11-10 18:24:51,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:51,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:51,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 18:24:51,818 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 18:24:51,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 18:24:51,860 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 18:24:51,862 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 18:24:51,864 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 14 remaining) [2024-11-10 18:24:51,866 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (12 of 14 remaining) [2024-11-10 18:24:51,866 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE (11 of 14 remaining) [2024-11-10 18:24:51,867 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (10 of 14 remaining) [2024-11-10 18:24:51,867 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE (9 of 14 remaining) [2024-11-10 18:24:51,867 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 14 remaining) [2024-11-10 18:24:51,867 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 14 remaining) [2024-11-10 18:24:51,867 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 14 remaining) [2024-11-10 18:24:51,868 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 14 remaining) [2024-11-10 18:24:51,868 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 14 remaining) [2024-11-10 18:24:51,868 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 14 remaining) [2024-11-10 18:24:51,868 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 14 remaining) [2024-11-10 18:24:51,869 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 14 remaining) [2024-11-10 18:24:51,869 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 14 remaining) [2024-11-10 18:24:51,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 18:24:51,869 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-10 18:24:51,892 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-10 18:24:51,892 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-10 18:24:51,898 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 06:24:51 BasicIcfg [2024-11-10 18:24:51,898 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-10 18:24:51,899 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-10 18:24:51,899 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-10 18:24:51,899 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-10 18:24:51,900 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:24:50" (3/4) ... [2024-11-10 18:24:51,901 INFO L137 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-10 18:24:51,938 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-10 18:24:51,938 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-10 18:24:51,939 INFO L158 Benchmark]: Toolchain (without parser) took 2538.42ms. Allocated memory was 132.1MB in the beginning and 205.5MB in the end (delta: 73.4MB). Free memory was 59.0MB in the beginning and 112.8MB in the end (delta: -53.8MB). Peak memory consumption was 19.8MB. Max. memory is 16.1GB. [2024-11-10 18:24:51,939 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 132.1MB. Free memory is still 84.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 18:24:51,940 INFO L158 Benchmark]: CACSL2BoogieTranslator took 536.48ms. Allocated memory was 132.1MB in the beginning and 205.5MB in the end (delta: 73.4MB). Free memory was 58.8MB in the beginning and 150.5MB in the end (delta: -91.7MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. [2024-11-10 18:24:51,940 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.36ms. Allocated memory is still 205.5MB. Free memory was 150.5MB in the beginning and 148.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 18:24:51,941 INFO L158 Benchmark]: Boogie Preprocessor took 68.80ms. Allocated memory is still 205.5MB. Free memory was 148.4MB in the beginning and 146.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 18:24:51,941 INFO L158 Benchmark]: IcfgBuilder took 602.75ms. Allocated memory is still 205.5MB. Free memory was 146.3MB in the beginning and 125.3MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-10 18:24:51,941 INFO L158 Benchmark]: TraceAbstraction took 1221.98ms. Allocated memory is still 205.5MB. Free memory was 124.3MB in the beginning and 114.9MB in the end (delta: 9.4MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. [2024-11-10 18:24:51,942 INFO L158 Benchmark]: Witness Printer took 39.68ms. Allocated memory is still 205.5MB. Free memory was 114.9MB in the beginning and 112.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 18:24:51,943 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 132.1MB. Free memory is still 84.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 536.48ms. Allocated memory was 132.1MB in the beginning and 205.5MB in the end (delta: 73.4MB). Free memory was 58.8MB in the beginning and 150.5MB in the end (delta: -91.7MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.36ms. Allocated memory is still 205.5MB. Free memory was 150.5MB in the beginning and 148.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 68.80ms. Allocated memory is still 205.5MB. Free memory was 148.4MB in the beginning and 146.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 602.75ms. Allocated memory is still 205.5MB. Free memory was 146.3MB in the beginning and 125.3MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 1221.98ms. Allocated memory is still 205.5MB. Free memory was 124.3MB in the beginning and 114.9MB in the end (delta: 9.4MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. * Witness Printer took 39.68ms. Allocated memory is still 205.5MB. Free memory was 114.9MB in the beginning and 112.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. 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; [L1057] 0 size = __VERIFIER_nondet_int() [L1058] COND FALSE 0 !(size < 1 || size > 20) [L1061] 0 int *a = (int *)malloc(size); [L1062] 0 pthread_t id1, id2; [L1063] 0 ind = 0 [L1064] 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] [L1041] 1 int *a = (int *)arg; VAL [\old(arg)={-2:0}, a={-2:0}, arg={-2:0}, i=1, ind=0, j=2, size=2] [L1042] COND TRUE 1 ind < size - 1 [L1043] 1 ++ind VAL [\old(arg)={-2:0}, a={-2:0}, arg={-2:0}, i=1, ind=1, j=2, size=2] [L1044] 1 a[ind] = i - UnprovableResult [Line: 1056]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1065]: 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: 1064]: 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, 50 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: 1.1s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 89 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 66 mSDsluCounter, 13 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 152 IncrementalHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 7 mSDtfsCounter, 152 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=100occurred in iteration=2, 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, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 35 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 18:24:51,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, 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)