/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_18-first-reads_unknown_1_pos.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 18:38:15,709 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 18:38:15,785 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 18:38:15,791 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 18:38:15,792 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 18:38:15,816 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 18:38:15,817 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 18:38:15,818 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 18:38:15,818 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 18:38:15,822 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 18:38:15,822 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 18:38:15,822 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 18:38:15,822 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 18:38:15,824 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 18:38:15,824 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 18:38:15,824 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 18:38:15,824 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 18:38:15,825 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 18:38:15,825 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 18:38:15,825 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 18:38:15,825 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 18:38:15,826 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 18:38:15,826 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 18:38:15,827 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 18:38:15,827 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 18:38:15,827 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 18:38:15,828 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 18:38:15,828 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 18:38:15,828 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 18:38:15,828 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 18:38:15,829 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 18:38:15,829 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 18:38:15,829 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 18:38:15,830 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 18:38:15,830 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 18:38:15,830 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-08-26 18:38:16,128 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 18:38:16,143 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 18:38:16,145 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 18:38:16,146 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 18:38:16,146 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 18:38:16,147 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_18-first-reads_unknown_1_pos.i [2023-08-26 18:38:17,207 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 18:38:17,452 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 18:38:17,452 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_18-first-reads_unknown_1_pos.i [2023-08-26 18:38:17,464 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce49ea014/064ea84cd6c24110846f97f4720b0483/FLAGab4895f69 [2023-08-26 18:38:17,479 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce49ea014/064ea84cd6c24110846f97f4720b0483 [2023-08-26 18:38:17,482 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 18:38:17,483 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 18:38:17,486 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 18:38:17,486 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 18:38:17,489 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 18:38:17,490 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:38:17" (1/1) ... [2023-08-26 18:38:17,490 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cbb7b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:38:17, skipping insertion in model container [2023-08-26 18:38:17,491 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:38:17" (1/1) ... [2023-08-26 18:38:17,538 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 18:38:17,849 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 18:38:17,861 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 18:38:17,889 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-26 18:38:17,890 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [233] [2023-08-26 18:38:17,912 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 18:38:17,952 INFO L206 MainTranslator]: Completed translation [2023-08-26 18:38:17,953 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:38:17 WrapperNode [2023-08-26 18:38:17,953 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 18:38:17,954 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 18:38:17,954 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 18:38:17,954 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 18:38:17,960 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:38:17" (1/1) ... [2023-08-26 18:38:17,988 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:38:17" (1/1) ... [2023-08-26 18:38:18,010 INFO L138 Inliner]: procedures = 163, calls = 22, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 59 [2023-08-26 18:38:18,011 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 18:38:18,012 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 18:38:18,012 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 18:38:18,012 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 18:38:18,019 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:38:17" (1/1) ... [2023-08-26 18:38:18,019 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:38:17" (1/1) ... [2023-08-26 18:38:18,025 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:38:17" (1/1) ... [2023-08-26 18:38:18,025 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:38:17" (1/1) ... [2023-08-26 18:38:18,037 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:38:17" (1/1) ... [2023-08-26 18:38:18,038 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:38:17" (1/1) ... [2023-08-26 18:38:18,039 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:38:17" (1/1) ... [2023-08-26 18:38:18,040 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:38:17" (1/1) ... [2023-08-26 18:38:18,042 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 18:38:18,042 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 18:38:18,043 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 18:38:18,043 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 18:38:18,043 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:38:17" (1/1) ... [2023-08-26 18:38:18,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 18:38:18,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 18:38:18,077 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 18:38:18,105 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 18:38:18,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 18:38:18,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 18:38:18,118 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 18:38:18,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 18:38:18,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 18:38:18,118 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 18:38:18,119 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 18:38:18,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 18:38:18,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 18:38:18,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 18:38:18,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 18:38:18,120 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 18:38:18,249 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 18:38:18,250 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 18:38:18,410 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 18:38:18,415 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 18:38:18,415 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-26 18:38:18,417 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:38:18 BoogieIcfgContainer [2023-08-26 18:38:18,417 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 18:38:18,418 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 18:38:18,418 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 18:38:18,421 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 18:38:18,421 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 06:38:17" (1/3) ... [2023-08-26 18:38:18,421 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1efe4da6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:38:18, skipping insertion in model container [2023-08-26 18:38:18,421 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:38:17" (2/3) ... [2023-08-26 18:38:18,422 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1efe4da6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:38:18, skipping insertion in model container [2023-08-26 18:38:18,422 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:38:18" (3/3) ... [2023-08-26 18:38:18,423 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_18-first-reads_unknown_1_pos.i [2023-08-26 18:38:18,439 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 18:38:18,439 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-08-26 18:38:18,439 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 18:38:18,503 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-26 18:38:18,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 67 transitions, 142 flow [2023-08-26 18:38:18,583 INFO L124 PetriNetUnfolderBase]: 3/66 cut-off events. [2023-08-26 18:38:18,584 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 18:38:18,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 66 events. 3/66 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 41 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2023-08-26 18:38:18,588 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 67 transitions, 142 flow [2023-08-26 18:38:18,594 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 59 transitions, 121 flow [2023-08-26 18:38:18,598 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 18:38:18,609 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 59 transitions, 121 flow [2023-08-26 18:38:18,616 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 60 places, 59 transitions, 121 flow [2023-08-26 18:38:18,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 59 transitions, 121 flow [2023-08-26 18:38:18,643 INFO L124 PetriNetUnfolderBase]: 3/59 cut-off events. [2023-08-26 18:38:18,643 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 18:38:18,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 59 events. 3/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 41 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2023-08-26 18:38:18,644 INFO L119 LiptonReduction]: Number of co-enabled transitions 432 [2023-08-26 18:38:21,101 INFO L134 LiptonReduction]: Checked pairs total: 658 [2023-08-26 18:38:21,102 INFO L136 LiptonReduction]: Total number of compositions: 67 [2023-08-26 18:38:21,112 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 18:38:21,118 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;@3cb9b927, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 18:38:21,118 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-26 18:38:21,120 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 18:38:21,120 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-08-26 18:38:21,120 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 18:38:21,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 18:38:21,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 18:38:21,121 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-08-26 18:38:21,125 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 18:38:21,125 INFO L85 PathProgramCache]: Analyzing trace with hash 273, now seen corresponding path program 1 times [2023-08-26 18:38:21,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 18:38:21,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387432067] [2023-08-26 18:38:21,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 18:38:21,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 18:38:21,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 18:38:21,218 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 18:38:21,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 18:38:21,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387432067] [2023-08-26 18:38:21,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387432067] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 18:38:21,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 18:38:21,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 18:38:21,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734818080] [2023-08-26 18:38:21,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 18:38:21,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 18:38:21,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 18:38:21,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 18:38:21,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 18:38:21,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 134 [2023-08-26 18:38:21,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 11 transitions, 25 flow. Second operand has 2 states, 2 states have (on average 62.5) internal successors, (125), 2 states have internal predecessors, (125), 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 18:38:21,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 18:38:21,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 134 [2023-08-26 18:38:21,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 18:38:21,288 INFO L124 PetriNetUnfolderBase]: 12/33 cut-off events. [2023-08-26 18:38:21,288 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 18:38:21,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 33 events. 12/33 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 82 event pairs, 12 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 62. Up to 34 conditions per place. [2023-08-26 18:38:21,291 INFO L140 encePairwiseOnDemand]: 132/134 looper letters, 9 selfloop transitions, 0 changer transitions 0/9 dead transitions. [2023-08-26 18:38:21,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 14 places, 9 transitions, 39 flow [2023-08-26 18:38:21,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 18:38:21,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 18:38:21,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 135 transitions. [2023-08-26 18:38:21,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.503731343283582 [2023-08-26 18:38:21,304 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 135 transitions. [2023-08-26 18:38:21,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 135 transitions. [2023-08-26 18:38:21,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 18:38:21,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 135 transitions. [2023-08-26 18:38:21,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 67.5) internal successors, (135), 2 states have internal predecessors, (135), 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 18:38:21,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 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 18:38:21,319 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 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 18:38:21,320 INFO L175 Difference]: Start difference. First operand has 15 places, 11 transitions, 25 flow. Second operand 2 states and 135 transitions. [2023-08-26 18:38:21,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 14 places, 9 transitions, 39 flow [2023-08-26 18:38:21,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 13 places, 9 transitions, 38 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 18:38:21,323 INFO L231 Difference]: Finished difference. Result has 13 places, 9 transitions, 20 flow [2023-08-26 18:38:21,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=20, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=20, PETRI_PLACES=13, PETRI_TRANSITIONS=9} [2023-08-26 18:38:21,328 INFO L281 CegarLoopForPetriNet]: 15 programPoint places, -2 predicate places. [2023-08-26 18:38:21,328 INFO L495 AbstractCegarLoop]: Abstraction has has 13 places, 9 transitions, 20 flow [2023-08-26 18:38:21,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 62.5) internal successors, (125), 2 states have internal predecessors, (125), 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 18:38:21,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 18:38:21,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-26 18:38:21,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 18:38:21,330 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-08-26 18:38:21,330 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 18:38:21,330 INFO L85 PathProgramCache]: Analyzing trace with hash 267057, now seen corresponding path program 1 times [2023-08-26 18:38:21,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 18:38:21,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270896497] [2023-08-26 18:38:21,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 18:38:21,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 18:38:21,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 18:38:21,372 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 18:38:21,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 18:38:21,402 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 18:38:21,403 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 18:38:21,404 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr0ASSERT_VIOLATIONASSERT (6 of 7 remaining) [2023-08-26 18:38:21,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2023-08-26 18:38:21,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2023-08-26 18:38:21,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 7 remaining) [2023-08-26 18:38:21,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 7 remaining) [2023-08-26 18:38:21,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2023-08-26 18:38:21,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONASSERT (0 of 7 remaining) [2023-08-26 18:38:21,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 18:38:21,407 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-26 18:38:21,412 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 18:38:21,412 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 18:38:21,426 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 06:38:21 BasicIcfg [2023-08-26 18:38:21,426 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 18:38:21,426 INFO L158 Benchmark]: Toolchain (without parser) took 3943.17ms. Allocated memory was 354.4MB in the beginning and 476.1MB in the end (delta: 121.6MB). Free memory was 329.5MB in the beginning and 403.5MB in the end (delta: -74.0MB). Peak memory consumption was 48.2MB. Max. memory is 16.0GB. [2023-08-26 18:38:21,427 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 354.4MB. Free memory is still 331.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 18:38:21,427 INFO L158 Benchmark]: CACSL2BoogieTranslator took 466.90ms. Allocated memory is still 354.4MB. Free memory was 329.0MB in the beginning and 310.6MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-26 18:38:21,428 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.84ms. Allocated memory is still 354.4MB. Free memory was 310.1MB in the beginning and 308.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 18:38:21,428 INFO L158 Benchmark]: Boogie Preprocessor took 30.13ms. Allocated memory is still 354.4MB. Free memory was 308.5MB in the beginning and 306.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 18:38:21,429 INFO L158 Benchmark]: RCFGBuilder took 374.30ms. Allocated memory is still 354.4MB. Free memory was 306.9MB in the beginning and 293.8MB in the end (delta: 13.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-26 18:38:21,429 INFO L158 Benchmark]: TraceAbstraction took 3007.63ms. Allocated memory was 354.4MB in the beginning and 476.1MB in the end (delta: 121.6MB). Free memory was 293.2MB in the beginning and 403.5MB in the end (delta: -110.2MB). Peak memory consumption was 12.5MB. Max. memory is 16.0GB. [2023-08-26 18:38:21,430 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 354.4MB. Free memory is still 331.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 466.90ms. Allocated memory is still 354.4MB. Free memory was 329.0MB in the beginning and 310.6MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 56.84ms. Allocated memory is still 354.4MB. Free memory was 310.1MB in the beginning and 308.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 30.13ms. Allocated memory is still 354.4MB. Free memory was 308.5MB in the beginning and 306.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 374.30ms. Allocated memory is still 354.4MB. Free memory was 306.9MB in the beginning and 293.8MB in the end (delta: 13.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 3007.63ms. Allocated memory was 354.4MB in the beginning and 476.1MB in the end (delta: 121.6MB). Free memory was 293.2MB in the beginning and 403.5MB in the end (delta: -110.2MB). Peak memory consumption was 12.5MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 232]: Unsoundness Warning unspecified type, defaulting to int C: short [232] - GenericResultAtLocation [Line: 233]: Unsoundness Warning unspecified type, defaulting to int C: short [233] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.5s, 60 PlacesBefore, 15 PlacesAfterwards, 59 TransitionsBefore, 11 TransitionsAfterwards, 432 CoEnabledTransitionPairs, 6 FixpointIterations, 24 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 3 ChoiceCompositions, 67 TotalNumberOfCompositions, 658 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 457, independent: 409, independent conditional: 0, independent unconditional: 409, dependent: 48, dependent conditional: 0, dependent unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 260, independent: 241, independent conditional: 0, independent unconditional: 241, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 457, independent: 168, independent conditional: 0, independent unconditional: 168, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 260, unknown conditional: 0, unknown unconditional: 260] , Statistics on independence cache: Total cache size (in pairs): 5, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, 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: [L682] 0 int glob1 = 0; [L683] 0 pthread_mutex_t mutex1 = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L697] 0 pthread_t id; [L698] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [glob1=0, id={5:0}, mutex1={3:0}, pthread_create(&id, ((void *)0), t_fun, ((void *)0))=-1] [L685] 1 int t = __VERIFIER_nondet_int(); [L687] COND TRUE 1 t == 42 [L688] 1 glob1 = 1 [L690] 1 t = glob1 [L691] CALL 1 __VERIFIER_assert(t == 0) [L19] COND TRUE 1 !(cond) [L19] CALL 1 reach_error() [L18] COND FALSE 1 !(0) [L18] 1 __assert_fail ("0", "13-privatized_18-first-reads_unknown_1_pos.c", 3, __extension__ __PRETTY_FUNCTION__) VAL [glob1=1, mutex1={3:0}] - 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: 698]: 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, 91 locations, 7 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: 2.9s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, 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, 9 IncrementalHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 9 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=25occurred 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, 4 NumberOfCodeBlocks, 4 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 18:38:21,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...