/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 INSUFFICIENT_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_2_neg.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 15:32:26,156 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 15:32:26,204 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 15:32:26,208 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 15:32:26,208 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 15:32:26,228 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 15:32:26,229 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 15:32:26,229 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 15:32:26,230 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 15:32:26,230 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 15:32:26,230 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 15:32:26,231 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 15:32:26,231 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 15:32:26,231 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 15:32:26,232 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 15:32:26,232 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 15:32:26,232 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 15:32:26,233 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 15:32:26,233 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 15:32:26,233 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 15:32:26,234 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 15:32:26,234 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 15:32:26,234 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 15:32:26,235 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 15:32:26,235 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 15:32:26,235 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 15:32:26,235 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 15:32:26,236 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 15:32:26,236 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 15:32:26,236 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 15:32:26,237 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 15:32:26,237 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 15:32:26,237 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 15:32:26,237 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 15:32:26,237 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 15:32:26,238 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-08-26 15:32:26,556 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 15:32:26,587 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 15:32:26,590 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 15:32:26,591 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 15:32:26,592 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 15:32:26,594 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_18-first-reads_unknown_2_neg.i [2023-08-26 15:32:27,721 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 15:32:28,053 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 15:32:28,054 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_18-first-reads_unknown_2_neg.i [2023-08-26 15:32:28,075 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c71590003/5f66ed85fb17442cb3d50aa34f8ff746/FLAG200066aa4 [2023-08-26 15:32:28,087 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c71590003/5f66ed85fb17442cb3d50aa34f8ff746 [2023-08-26 15:32:28,089 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 15:32:28,091 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 15:32:28,092 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 15:32:28,092 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 15:32:28,094 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 15:32:28,095 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:32:28" (1/1) ... [2023-08-26 15:32:28,096 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ad5446c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:32:28, skipping insertion in model container [2023-08-26 15:32:28,096 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:32:28" (1/1) ... [2023-08-26 15:32:28,134 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 15:32:28,473 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 15:32:28,488 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 15:32:28,516 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-26 15:32:28,518 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [233] [2023-08-26 15:32:28,537 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 15:32:28,579 INFO L206 MainTranslator]: Completed translation [2023-08-26 15:32:28,581 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:32:28 WrapperNode [2023-08-26 15:32:28,581 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 15:32:28,582 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 15:32:28,582 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 15:32:28,582 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 15:32:28,588 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:32:28" (1/1) ... [2023-08-26 15:32:28,617 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:32:28" (1/1) ... [2023-08-26 15:32:28,641 INFO L138 Inliner]: procedures = 163, calls = 22, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 59 [2023-08-26 15:32:28,642 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 15:32:28,643 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 15:32:28,643 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 15:32:28,643 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 15:32:28,650 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:32:28" (1/1) ... [2023-08-26 15:32:28,651 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:32:28" (1/1) ... [2023-08-26 15:32:28,657 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:32:28" (1/1) ... [2023-08-26 15:32:28,658 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:32:28" (1/1) ... [2023-08-26 15:32:28,677 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:32:28" (1/1) ... [2023-08-26 15:32:28,679 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:32:28" (1/1) ... [2023-08-26 15:32:28,684 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:32:28" (1/1) ... [2023-08-26 15:32:28,685 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:32:28" (1/1) ... [2023-08-26 15:32:28,687 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 15:32:28,688 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 15:32:28,688 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 15:32:28,688 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 15:32:28,688 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:32:28" (1/1) ... [2023-08-26 15:32:28,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 15:32:28,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 15:32:28,730 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 15:32:28,754 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 15:32:28,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 15:32:28,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 15:32:28,767 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 15:32:28,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 15:32:28,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 15:32:28,768 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 15:32:28,768 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 15:32:28,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 15:32:28,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 15:32:28,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 15:32:28,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 15:32:28,770 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 15:32:28,904 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 15:32:28,906 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 15:32:29,101 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 15:32:29,109 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 15:32:29,109 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-26 15:32:29,112 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:32:29 BoogieIcfgContainer [2023-08-26 15:32:29,112 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 15:32:29,115 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 15:32:29,115 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 15:32:29,117 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 15:32:29,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 03:32:28" (1/3) ... [2023-08-26 15:32:29,118 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e49d838 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:32:29, skipping insertion in model container [2023-08-26 15:32:29,119 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:32:28" (2/3) ... [2023-08-26 15:32:29,119 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e49d838 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:32:29, skipping insertion in model container [2023-08-26 15:32:29,119 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:32:29" (3/3) ... [2023-08-26 15:32:29,120 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_18-first-reads_unknown_2_neg.i [2023-08-26 15:32:29,134 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 15:32:29,134 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-08-26 15:32:29,134 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 15:32:29,178 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-26 15:32:29,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 67 transitions, 142 flow [2023-08-26 15:32:29,243 INFO L124 PetriNetUnfolderBase]: 3/66 cut-off events. [2023-08-26 15:32:29,243 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 15:32:29,247 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 15:32:29,247 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 67 transitions, 142 flow [2023-08-26 15:32:29,250 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 59 transitions, 121 flow [2023-08-26 15:32:29,253 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:32:29,262 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 59 transitions, 121 flow [2023-08-26 15:32:29,264 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 60 places, 59 transitions, 121 flow [2023-08-26 15:32:29,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 59 transitions, 121 flow [2023-08-26 15:32:29,278 INFO L124 PetriNetUnfolderBase]: 3/59 cut-off events. [2023-08-26 15:32:29,278 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 15:32:29,279 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 15:32:29,279 INFO L119 LiptonReduction]: Number of co-enabled transitions 432 [2023-08-26 15:32:31,599 INFO L134 LiptonReduction]: Checked pairs total: 658 [2023-08-26 15:32:31,599 INFO L136 LiptonReduction]: Total number of compositions: 67 [2023-08-26 15:32:31,611 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 15:32:31,617 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;@18e28efa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:32:31,617 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-26 15:32:31,619 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:32:31,620 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-08-26 15:32:31,620 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 15:32:31,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:32:31,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 15:32:31,621 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 15:32:31,625 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:32:31,625 INFO L85 PathProgramCache]: Analyzing trace with hash 273, now seen corresponding path program 1 times [2023-08-26 15:32:31,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:32:31,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270705361] [2023-08-26 15:32:31,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:32:31,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:32:31,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:32:31,740 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 15:32:31,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:32:31,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270705361] [2023-08-26 15:32:31,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270705361] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:32:31,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:32:31,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 15:32:31,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433942129] [2023-08-26 15:32:31,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:32:31,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 15:32:31,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:32:31,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 15:32:31,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 15:32:31,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 134 [2023-08-26 15:32:31,784 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 15:32:31,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:32:31,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 134 [2023-08-26 15:32:31,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:32:31,818 INFO L124 PetriNetUnfolderBase]: 12/33 cut-off events. [2023-08-26 15:32:31,818 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 15:32:31,818 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 15:32:31,820 INFO L140 encePairwiseOnDemand]: 132/134 looper letters, 9 selfloop transitions, 0 changer transitions 0/9 dead transitions. [2023-08-26 15:32:31,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 14 places, 9 transitions, 39 flow [2023-08-26 15:32:31,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 15:32:31,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 15:32:31,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 135 transitions. [2023-08-26 15:32:31,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.503731343283582 [2023-08-26 15:32:31,832 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 135 transitions. [2023-08-26 15:32:31,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 135 transitions. [2023-08-26 15:32:31,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:32:31,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 135 transitions. [2023-08-26 15:32:31,837 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 15:32:31,843 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 15:32:31,844 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 15:32:31,845 INFO L175 Difference]: Start difference. First operand has 15 places, 11 transitions, 25 flow. Second operand 2 states and 135 transitions. [2023-08-26 15:32:31,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 14 places, 9 transitions, 39 flow [2023-08-26 15:32:31,848 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 15:32:31,849 INFO L231 Difference]: Finished difference. Result has 13 places, 9 transitions, 20 flow [2023-08-26 15:32:31,851 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 15:32:31,855 INFO L281 CegarLoopForPetriNet]: 15 programPoint places, -2 predicate places. [2023-08-26 15:32:31,856 INFO L495 AbstractCegarLoop]: Abstraction has has 13 places, 9 transitions, 20 flow [2023-08-26 15:32:31,856 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 15:32:31,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:32:31,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-26 15:32:31,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 15:32:31,857 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 15:32:31,858 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:32:31,858 INFO L85 PathProgramCache]: Analyzing trace with hash 267057, now seen corresponding path program 1 times [2023-08-26 15:32:31,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:32:31,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783260145] [2023-08-26 15:32:31,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:32:31,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:32:31,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:32:31,927 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:32:31,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:32:31,964 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:32:31,964 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:32:31,965 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr0ASSERT_VIOLATIONASSERT (6 of 7 remaining) [2023-08-26 15:32:31,967 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2023-08-26 15:32:31,967 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2023-08-26 15:32:31,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 7 remaining) [2023-08-26 15:32:31,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 7 remaining) [2023-08-26 15:32:31,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2023-08-26 15:32:31,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONASSERT (0 of 7 remaining) [2023-08-26 15:32:31,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 15:32:31,969 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-26 15:32:31,978 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 15:32:31,978 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 15:32:32,002 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 03:32:32 BasicIcfg [2023-08-26 15:32:32,002 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 15:32:32,002 INFO L158 Benchmark]: Toolchain (without parser) took 3911.84ms. Allocated memory is still 348.1MB. Free memory was 323.1MB in the beginning and 153.4MB in the end (delta: 169.7MB). Peak memory consumption was 169.2MB. Max. memory is 16.0GB. [2023-08-26 15:32:32,003 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 348.1MB. Free memory is still 324.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 15:32:32,003 INFO L158 Benchmark]: CACSL2BoogieTranslator took 489.72ms. Allocated memory is still 348.1MB. Free memory was 322.6MB in the beginning and 303.8MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-26 15:32:32,004 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.93ms. Allocated memory is still 348.1MB. Free memory was 303.8MB in the beginning and 302.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 15:32:32,004 INFO L158 Benchmark]: Boogie Preprocessor took 44.33ms. Allocated memory is still 348.1MB. Free memory was 302.1MB in the beginning and 300.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 15:32:32,004 INFO L158 Benchmark]: RCFGBuilder took 424.43ms. Allocated memory is still 348.1MB. Free memory was 300.6MB in the beginning and 287.5MB in the end (delta: 13.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-26 15:32:32,005 INFO L158 Benchmark]: TraceAbstraction took 2887.32ms. Allocated memory is still 348.1MB. Free memory was 287.0MB in the beginning and 153.4MB in the end (delta: 133.5MB). Peak memory consumption was 133.5MB. Max. memory is 16.0GB. [2023-08-26 15:32:32,007 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 348.1MB. Free memory is still 324.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 489.72ms. Allocated memory is still 348.1MB. Free memory was 322.6MB in the beginning and 303.8MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 59.93ms. Allocated memory is still 348.1MB. Free memory was 303.8MB in the beginning and 302.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 44.33ms. Allocated memory is still 348.1MB. Free memory was 302.1MB in the beginning and 300.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 424.43ms. Allocated memory is still 348.1MB. Free memory was 300.6MB in the beginning and 287.5MB in the end (delta: 13.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 2887.32ms. Allocated memory is still 348.1MB. Free memory was 287.0MB in the beginning and 153.4MB in the end (delta: 133.5MB). Peak memory consumption was 133.5MB. 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: 2.3s, 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 == 1)) [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_2_neg.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: 2.8s, 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, 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, 0.1s 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 15:32:32,025 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...