/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.pointer.base.address.is.valid.at.dereference ASSERTandASSUME --cacsl2boogietranslator.pointer.to.allocated.memory.at.dereference ASSERTandASSUME --cacsl2boogietranslator.check.array.bounds.for.arrays.that.are.off.heap ASSERTandASSUME --cacsl2boogietranslator.check.if.freed.pointer.was.valid true --cacsl2boogietranslator.adapt.memory.model.on.pointer.casts.if.necessary true -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_19-publish-precision_unknown_2_pos.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 18:38:49,824 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 18:38:49,892 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 18:38:49,900 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 18:38:49,900 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 18:38:49,925 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 18:38:49,925 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 18:38:49,926 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 18:38:49,926 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 18:38:49,926 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 18:38:49,927 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 18:38:49,927 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 18:38:49,927 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 18:38:49,928 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 18:38:49,928 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 18:38:49,928 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 18:38:49,929 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 18:38:49,929 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 18:38:49,929 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 18:38:49,930 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 18:38:49,930 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 18:38:49,934 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 18:38:49,934 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 18:38:49,934 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 18:38:49,937 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 18:38:49,937 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 18:38:49,937 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 18:38:49,938 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 18:38:49,938 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 18:38:49,938 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 18:38:49,939 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 18:38:49,939 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 18:38:49,939 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 18:38:49,940 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 18:38:49,940 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 18:38:49,940 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-08-26 18:38:50,231 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 18:38:50,251 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 18:38:50,253 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 18:38:50,254 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 18:38:50,255 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 18:38:50,256 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_19-publish-precision_unknown_2_pos.i [2023-08-26 18:38:51,477 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 18:38:51,748 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 18:38:51,749 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_19-publish-precision_unknown_2_pos.i [2023-08-26 18:38:51,762 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f035bf94/2cefcff62a174417be0e3902fd35efe6/FLAG47b66068e [2023-08-26 18:38:51,787 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f035bf94/2cefcff62a174417be0e3902fd35efe6 [2023-08-26 18:38:51,789 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 18:38:51,790 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 18:38:51,791 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 18:38:51,791 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 18:38:51,793 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 18:38:51,794 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:38:51" (1/1) ... [2023-08-26 18:38:51,795 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55b1d7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:38:51, skipping insertion in model container [2023-08-26 18:38:51,795 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:38:51" (1/1) ... [2023-08-26 18:38:51,839 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 18:38:52,152 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 18:38:52,167 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 18:38:52,193 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [231] [2023-08-26 18:38:52,194 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-26 18:38:52,215 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 18:38:52,253 INFO L206 MainTranslator]: Completed translation [2023-08-26 18:38:52,253 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:38:52 WrapperNode [2023-08-26 18:38:52,253 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 18:38:52,254 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 18:38:52,254 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 18:38:52,255 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 18:38:52,260 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:38:52" (1/1) ... [2023-08-26 18:38:52,290 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:38:52" (1/1) ... [2023-08-26 18:38:52,313 INFO L138 Inliner]: procedures = 162, calls = 30, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 52 [2023-08-26 18:38:52,314 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 18:38:52,315 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 18:38:52,315 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 18:38:52,315 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 18:38:52,322 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:38:52" (1/1) ... [2023-08-26 18:38:52,322 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:38:52" (1/1) ... [2023-08-26 18:38:52,328 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:38:52" (1/1) ... [2023-08-26 18:38:52,329 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:38:52" (1/1) ... [2023-08-26 18:38:52,341 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:38:52" (1/1) ... [2023-08-26 18:38:52,343 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:38:52" (1/1) ... [2023-08-26 18:38:52,344 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:38:52" (1/1) ... [2023-08-26 18:38:52,345 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:38:52" (1/1) ... [2023-08-26 18:38:52,346 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 18:38:52,347 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 18:38:52,347 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 18:38:52,347 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 18:38:52,348 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:38:52" (1/1) ... [2023-08-26 18:38:52,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 18:38:52,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 18:38:52,378 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-26 18:38:52,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-26 18:38:52,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 18:38:52,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 18:38:52,411 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 18:38:52,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 18:38:52,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 18:38:52,411 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 18:38:52,411 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 18:38:52,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 18:38:52,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 18:38:52,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 18:38:52,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 18:38:52,413 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 18:38:52,528 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 18:38:52,530 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 18:38:52,671 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 18:38:52,676 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 18:38:52,677 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-26 18:38:52,679 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:38:52 BoogieIcfgContainer [2023-08-26 18:38:52,679 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 18:38:52,681 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 18:38:52,681 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 18:38:52,683 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 18:38:52,684 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 06:38:51" (1/3) ... [2023-08-26 18:38:52,684 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3117ca06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:38:52, skipping insertion in model container [2023-08-26 18:38:52,684 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:38:52" (2/3) ... [2023-08-26 18:38:52,685 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3117ca06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:38:52, skipping insertion in model container [2023-08-26 18:38:52,686 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:38:52" (3/3) ... [2023-08-26 18:38:52,687 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_19-publish-precision_unknown_2_pos.i [2023-08-26 18:38:52,703 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 18:38:52,704 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-08-26 18:38:52,704 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 18:38:52,763 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-26 18:38:52,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 73 transitions, 154 flow [2023-08-26 18:38:52,834 INFO L124 PetriNetUnfolderBase]: 2/72 cut-off events. [2023-08-26 18:38:52,834 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 18:38:52,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 72 events. 2/72 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 65 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2023-08-26 18:38:52,838 INFO L82 GeneralOperation]: Start removeDead. Operand has 75 places, 73 transitions, 154 flow [2023-08-26 18:38:52,841 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 64 transitions, 131 flow [2023-08-26 18:38:52,845 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 18:38:52,853 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 64 transitions, 131 flow [2023-08-26 18:38:52,855 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 64 transitions, 131 flow [2023-08-26 18:38:52,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 64 transitions, 131 flow [2023-08-26 18:38:52,873 INFO L124 PetriNetUnfolderBase]: 2/64 cut-off events. [2023-08-26 18:38:52,874 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 18:38:52,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 64 events. 2/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 57 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2023-08-26 18:38:52,875 INFO L119 LiptonReduction]: Number of co-enabled transitions 532 [2023-08-26 18:38:55,145 INFO L134 LiptonReduction]: Checked pairs total: 1556 [2023-08-26 18:38:55,145 INFO L136 LiptonReduction]: Total number of compositions: 60 [2023-08-26 18:38:55,169 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 18:38:55,178 INFO L357 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, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@127570da, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 18:38:55,178 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-26 18:38:55,179 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 18:38:55,179 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 18:38:55,179 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 18:38:55,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 18:38:55,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 18:38:55,181 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-08-26 18:38:55,188 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 18:38:55,189 INFO L85 PathProgramCache]: Analyzing trace with hash 260, now seen corresponding path program 1 times [2023-08-26 18:38:55,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 18:38:55,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83137064] [2023-08-26 18:38:55,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 18:38:55,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 18:38:55,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 18:38:55,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 18:38:55,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 18:38:55,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83137064] [2023-08-26 18:38:55,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83137064] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 18:38:55,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 18:38:55,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 18:38:55,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145114474] [2023-08-26 18:38:55,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 18:38:55,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 18:38:55,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 18:38:55,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 18:38:55,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 18:38:55,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 133 [2023-08-26 18:38:55,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 20 transitions, 43 flow. Second operand has 2 states, 2 states have (on average 68.5) internal successors, (137), 2 states have internal predecessors, (137), 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) [2023-08-26 18:38:55,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 18:38:55,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 133 [2023-08-26 18:38:55,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 18:38:55,394 INFO L124 PetriNetUnfolderBase]: 16/68 cut-off events. [2023-08-26 18:38:55,394 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 18:38:55,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 68 events. 16/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 202 event pairs, 16 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 106. Up to 43 conditions per place. [2023-08-26 18:38:55,396 INFO L140 encePairwiseOnDemand]: 130/133 looper letters, 10 selfloop transitions, 0 changer transitions 0/16 dead transitions. [2023-08-26 18:38:55,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 16 transitions, 55 flow [2023-08-26 18:38:55,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 18:38:55,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 18:38:55,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 149 transitions. [2023-08-26 18:38:55,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5601503759398496 [2023-08-26 18:38:55,407 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 149 transitions. [2023-08-26 18:38:55,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 149 transitions. [2023-08-26 18:38:55,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 18:38:55,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 149 transitions. [2023-08-26 18:38:55,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 74.5) internal successors, (149), 2 states have internal predecessors, (149), 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) [2023-08-26 18:38:55,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 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) [2023-08-26 18:38:55,415 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 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) [2023-08-26 18:38:55,416 INFO L175 Difference]: Start difference. First operand has 23 places, 20 transitions, 43 flow. Second operand 2 states and 149 transitions. [2023-08-26 18:38:55,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 16 transitions, 55 flow [2023-08-26 18:38:55,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 16 transitions, 54 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 18:38:55,420 INFO L231 Difference]: Finished difference. Result has 20 places, 16 transitions, 34 flow [2023-08-26 18:38:55,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=34, PETRI_PLACES=20, PETRI_TRANSITIONS=16} [2023-08-26 18:38:55,425 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, -3 predicate places. [2023-08-26 18:38:55,425 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 16 transitions, 34 flow [2023-08-26 18:38:55,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 68.5) internal successors, (137), 2 states have internal predecessors, (137), 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) [2023-08-26 18:38:55,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 18:38:55,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 18:38:55,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 18:38:55,426 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-08-26 18:38:55,428 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 18:38:55,428 INFO L85 PathProgramCache]: Analyzing trace with hash 7945678, now seen corresponding path program 1 times [2023-08-26 18:38:55,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 18:38:55,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370645001] [2023-08-26 18:38:55,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 18:38:55,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 18:38:55,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 18:38:55,476 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 18:38:55,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 18:38:55,516 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 18:38:55,516 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 18:38:55,517 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (5 of 6 remaining) [2023-08-26 18:38:55,518 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 6 remaining) [2023-08-26 18:38:55,519 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 6 remaining) [2023-08-26 18:38:55,519 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 6 remaining) [2023-08-26 18:38:55,519 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 6 remaining) [2023-08-26 18:38:55,519 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2023-08-26 18:38:55,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 18:38:55,520 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-26 18:38:55,525 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 18:38:55,525 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 18:38:55,540 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 06:38:55 BasicIcfg [2023-08-26 18:38:55,540 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 18:38:55,541 INFO L158 Benchmark]: Toolchain (without parser) took 3750.53ms. Allocated memory was 369.1MB in the beginning and 463.5MB in the end (delta: 94.4MB). Free memory was 344.1MB in the beginning and 377.6MB in the end (delta: -33.5MB). Peak memory consumption was 61.6MB. Max. memory is 16.0GB. [2023-08-26 18:38:55,541 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 369.1MB. Free memory is still 345.5MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 18:38:55,543 INFO L158 Benchmark]: CACSL2BoogieTranslator took 462.33ms. Allocated memory is still 369.1MB. Free memory was 344.1MB in the beginning and 325.1MB in the end (delta: 19.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-26 18:38:55,544 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.43ms. Allocated memory is still 369.1MB. Free memory was 325.1MB in the beginning and 323.1MB in the end (delta: 2.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-26 18:38:55,548 INFO L158 Benchmark]: Boogie Preprocessor took 31.82ms. Allocated memory is still 369.1MB. Free memory was 323.1MB in the beginning and 321.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 18:38:55,549 INFO L158 Benchmark]: RCFGBuilder took 331.59ms. Allocated memory is still 369.1MB. Free memory was 321.7MB in the beginning and 307.7MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-26 18:38:55,549 INFO L158 Benchmark]: TraceAbstraction took 2859.85ms. Allocated memory was 369.1MB in the beginning and 463.5MB in the end (delta: 94.4MB). Free memory was 307.1MB in the beginning and 377.6MB in the end (delta: -70.5MB). Peak memory consumption was 25.9MB. Max. memory is 16.0GB. [2023-08-26 18:38:55,551 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 369.1MB. Free memory is still 345.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 462.33ms. Allocated memory is still 369.1MB. Free memory was 344.1MB in the beginning and 325.1MB in the end (delta: 19.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 59.43ms. Allocated memory is still 369.1MB. Free memory was 325.1MB in the beginning and 323.1MB in the end (delta: 2.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 31.82ms. Allocated memory is still 369.1MB. Free memory was 323.1MB in the beginning and 321.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 331.59ms. Allocated memory is still 369.1MB. Free memory was 321.7MB in the beginning and 307.7MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 2859.85ms. Allocated memory was 369.1MB in the beginning and 463.5MB in the end (delta: 94.4MB). Free memory was 307.1MB in the beginning and 377.6MB in the end (delta: -70.5MB). Peak memory consumption was 25.9MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 231]: Unsoundness Warning unspecified type, defaulting to int C: short [231] - GenericResultAtLocation [Line: 232]: Unsoundness Warning unspecified type, defaulting to int C: short [232] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.3s, 66 PlacesBefore, 23 PlacesAfterwards, 64 TransitionsBefore, 20 TransitionsAfterwards, 532 CoEnabledTransitionPairs, 6 FixpointIterations, 35 TrivialSequentialCompositions, 20 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 60 TotalNumberOfCompositions, 1556 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 809, independent: 679, independent conditional: 0, independent unconditional: 679, dependent: 130, dependent conditional: 0, dependent unconditional: 130, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 310, independent: 280, independent conditional: 0, independent unconditional: 280, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 809, independent: 399, independent conditional: 0, independent unconditional: 399, dependent: 100, dependent conditional: 0, dependent unconditional: 100, unknown: 310, unknown conditional: 0, unknown unconditional: 310] , Statistics on independence cache: Total cache size (in pairs): 47, Positive cache size: 35, Positive conditional cache size: 0, Positive unconditional cache size: 35, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 18]: assertion can be violated assertion can be violated We found a FailurePath: [L681] 0 int glob1 = 0; [L682] 0 pthread_mutex_t mutex1 = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L683] 0 pthread_mutex_t mutex2 = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L696] 0 pthread_t id; [L697] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [arg={0:0}, glob1=0, id={6:0}, mutex1={3:0}, mutex2={4:0}, pthread_create(&id, ((void *)0), t_fun, ((void *)0))=-1] [L699] CALL 0 __VERIFIER_assert(glob1 == 5) [L19] COND TRUE 0 !(cond) [L19] CALL 0 reach_error() [L18] COND FALSE 0 !(0) [L18] 0 __assert_fail ("0", "13-privatized_19-publish-precision_unknown_2_pos.c", 3, __extension__ __PRETTY_FUNCTION__) VAL [arg={0:0}, glob1=0, mutex1={3:0}, mutex2={4:0}] - 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. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 697]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 88 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10 IncrementalHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 10 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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! [2023-08-26 18:38:55,569 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...