/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/05-lval_ls_02-idx_nr.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 18:34:09,039 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 18:34:09,106 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 18:34:09,115 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 18:34:09,115 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 18:34:09,149 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 18:34:09,150 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 18:34:09,150 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 18:34:09,151 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 18:34:09,155 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 18:34:09,155 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 18:34:09,155 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 18:34:09,155 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 18:34:09,157 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 18:34:09,157 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 18:34:09,157 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 18:34:09,157 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 18:34:09,157 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 18:34:09,158 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 18:34:09,158 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 18:34:09,158 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 18:34:09,159 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 18:34:09,159 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 18:34:09,159 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 18:34:09,160 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 18:34:09,160 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 18:34:09,160 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 18:34:09,160 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 18:34:09,160 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 18:34:09,161 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 18:34:09,162 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 18:34:09,162 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 18:34:09,162 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 18:34:09,162 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 18:34:09,162 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 18:34:09,163 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-08-26 18:34:09,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 18:34:09,511 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 18:34:09,513 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 18:34:09,514 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 18:34:09,516 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 18:34:09,517 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/05-lval_ls_02-idx_nr.i [2023-08-26 18:34:10,666 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 18:34:10,907 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 18:34:10,908 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/05-lval_ls_02-idx_nr.i [2023-08-26 18:34:10,922 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91ea8a500/9aff0dc3cd1c42cbbed20b22ee93ade5/FLAGbe1183ee9 [2023-08-26 18:34:10,935 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91ea8a500/9aff0dc3cd1c42cbbed20b22ee93ade5 [2023-08-26 18:34:10,937 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 18:34:10,938 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 18:34:10,939 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 18:34:10,940 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 18:34:10,941 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 18:34:10,942 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:34:10" (1/1) ... [2023-08-26 18:34:10,942 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@337ede87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:34:10, skipping insertion in model container [2023-08-26 18:34:10,943 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:34:10" (1/1) ... [2023-08-26 18:34:10,991 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 18:34:11,278 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 18:34:11,304 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 18:34:11,331 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 18:34:11,333 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 18:34:11,352 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 18:34:11,391 INFO L206 MainTranslator]: Completed translation [2023-08-26 18:34:11,391 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:34:11 WrapperNode [2023-08-26 18:34:11,391 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 18:34:11,392 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 18:34:11,393 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 18:34:11,393 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 18:34:11,399 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:34:11" (1/1) ... [2023-08-26 18:34:11,431 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:34:11" (1/1) ... [2023-08-26 18:34:11,451 INFO L138 Inliner]: procedures = 161, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 38 [2023-08-26 18:34:11,452 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 18:34:11,452 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 18:34:11,453 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 18:34:11,453 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 18:34:11,461 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:34:11" (1/1) ... [2023-08-26 18:34:11,461 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:34:11" (1/1) ... [2023-08-26 18:34:11,468 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:34:11" (1/1) ... [2023-08-26 18:34:11,469 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:34:11" (1/1) ... [2023-08-26 18:34:11,485 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:34:11" (1/1) ... [2023-08-26 18:34:11,487 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:34:11" (1/1) ... [2023-08-26 18:34:11,488 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:34:11" (1/1) ... [2023-08-26 18:34:11,489 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:34:11" (1/1) ... [2023-08-26 18:34:11,491 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 18:34:11,492 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 18:34:11,492 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 18:34:11,492 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 18:34:11,492 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:34:11" (1/1) ... [2023-08-26 18:34:11,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 18:34:11,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 18:34:11,527 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 18:34:11,544 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 18:34:11,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 18:34:11,564 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 18:34:11,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 18:34:11,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 18:34:11,564 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 18:34:11,565 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 18:34:11,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 18:34:11,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 18:34:11,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 18:34:11,566 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 18:34:11,702 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 18:34:11,703 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 18:34:11,864 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 18:34:11,870 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 18:34:11,870 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-26 18:34:11,871 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:34:11 BoogieIcfgContainer [2023-08-26 18:34:11,872 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 18:34:11,873 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 18:34:11,873 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 18:34:11,876 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 18:34:11,876 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 06:34:10" (1/3) ... [2023-08-26 18:34:11,877 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7157d959 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:34:11, skipping insertion in model container [2023-08-26 18:34:11,877 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:34:11" (2/3) ... [2023-08-26 18:34:11,877 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7157d959 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:34:11, skipping insertion in model container [2023-08-26 18:34:11,877 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:34:11" (3/3) ... [2023-08-26 18:34:11,878 INFO L112 eAbstractionObserver]: Analyzing ICFG 05-lval_ls_02-idx_nr.i [2023-08-26 18:34:11,893 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 18:34:11,894 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-26 18:34:11,894 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 18:34:11,938 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 18:34:11,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 48 transitions, 101 flow [2023-08-26 18:34:12,003 INFO L124 PetriNetUnfolderBase]: 2/47 cut-off events. [2023-08-26 18:34:12,003 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 18:34:12,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 47 events. 2/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 33 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2023-08-26 18:34:12,008 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 48 transitions, 101 flow [2023-08-26 18:34:12,011 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 22 places, 23 transitions, 46 flow [2023-08-26 18:34:12,014 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 18:34:12,025 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 22 places, 23 transitions, 46 flow [2023-08-26 18:34:12,033 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 22 places, 23 transitions, 46 flow [2023-08-26 18:34:12,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 22 places, 23 transitions, 46 flow [2023-08-26 18:34:12,050 INFO L124 PetriNetUnfolderBase]: 2/23 cut-off events. [2023-08-26 18:34:12,050 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 18:34:12,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24 conditions, 23 events. 2/23 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 10 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-08-26 18:34:12,051 INFO L119 LiptonReduction]: Number of co-enabled transitions 0 [2023-08-26 18:34:12,576 INFO L134 LiptonReduction]: Checked pairs total: 0 [2023-08-26 18:34:12,576 INFO L136 LiptonReduction]: Total number of compositions: 23 [2023-08-26 18:34:12,596 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 18:34:12,603 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;@64835b81, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 18:34:12,603 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-26 18:34:12,607 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 18:34:12,607 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-26 18:34:12,607 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 18:34:12,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 18:34:12,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-26 18:34:12,608 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 18:34:12,612 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 18:34:12,612 INFO L85 PathProgramCache]: Analyzing trace with hash 5374, now seen corresponding path program 1 times [2023-08-26 18:34:12,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 18:34:12,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167428439] [2023-08-26 18:34:12,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 18:34:12,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 18:34:12,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 18:34:12,761 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 18:34:12,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 18:34:12,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167428439] [2023-08-26 18:34:12,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167428439] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 18:34:12,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 18:34:12,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 18:34:12,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041268164] [2023-08-26 18:34:12,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 18:34:12,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 18:34:12,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 18:34:12,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 18:34:12,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 18:34:12,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 71 [2023-08-26 18:34:12,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 4 places, 4 transitions, 8 flow. Second operand has 2 states, 2 states have (on average 47.0) internal successors, (94), 2 states have internal predecessors, (94), 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 18:34:12,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 18:34:12,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 71 [2023-08-26 18:34:12,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 18:34:12,808 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-26 18:34:12,808 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 18:34:12,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6 conditions, 2 events. 1/2 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 0/2 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2023-08-26 18:34:12,809 INFO L140 encePairwiseOnDemand]: 69/71 looper letters, 0 selfloop transitions, 0 changer transitions 2/2 dead transitions. [2023-08-26 18:34:12,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 3 places, 2 transitions, 8 flow [2023-08-26 18:34:12,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 18:34:12,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 18:34:12,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 96 transitions. [2023-08-26 18:34:12,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.676056338028169 [2023-08-26 18:34:12,824 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 96 transitions. [2023-08-26 18:34:12,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 96 transitions. [2023-08-26 18:34:12,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 18:34:12,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 96 transitions. [2023-08-26 18:34:12,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 48.0) internal successors, (96), 2 states have internal predecessors, (96), 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 18:34:12,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 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 18:34:12,837 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 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 18:34:12,839 INFO L175 Difference]: Start difference. First operand has 4 places, 4 transitions, 8 flow. Second operand 2 states and 96 transitions. [2023-08-26 18:34:12,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 3 places, 2 transitions, 8 flow [2023-08-26 18:34:12,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 3 places, 2 transitions, 8 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 18:34:12,842 INFO L231 Difference]: Finished difference. Result has 3 places, 0 transitions, 0 flow [2023-08-26 18:34:12,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=4, PETRI_DIFFERENCE_MINUEND_PLACES=2, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=0, PETRI_PLACES=3, PETRI_TRANSITIONS=0} [2023-08-26 18:34:12,847 INFO L281 CegarLoopForPetriNet]: 4 programPoint places, -1 predicate places. [2023-08-26 18:34:12,848 INFO L495 AbstractCegarLoop]: Abstraction has has 3 places, 0 transitions, 0 flow [2023-08-26 18:34:12,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 47.0) internal successors, (94), 2 states have internal predecessors, (94), 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 18:34:12,850 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 3 remaining) [2023-08-26 18:34:12,850 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 3 remaining) [2023-08-26 18:34:12,851 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-26 18:34:12,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 18:34:12,853 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 18:34:12,863 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 18:34:12,863 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 18:34:12,866 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 06:34:12 BasicIcfg [2023-08-26 18:34:12,866 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 18:34:12,867 INFO L158 Benchmark]: Toolchain (without parser) took 1928.15ms. Allocated memory is still 339.7MB. Free memory was 315.5MB in the beginning and 280.9MB in the end (delta: 34.7MB). Peak memory consumption was 36.9MB. Max. memory is 16.0GB. [2023-08-26 18:34:12,867 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 339.7MB. Free memory is still 316.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 18:34:12,867 INFO L158 Benchmark]: CACSL2BoogieTranslator took 452.18ms. Allocated memory is still 339.7MB. Free memory was 315.1MB in the beginning and 296.2MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-26 18:34:12,868 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.24ms. Allocated memory is still 339.7MB. Free memory was 296.2MB in the beginning and 294.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 18:34:12,868 INFO L158 Benchmark]: Boogie Preprocessor took 38.58ms. Allocated memory is still 339.7MB. Free memory was 294.6MB in the beginning and 293.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 18:34:12,869 INFO L158 Benchmark]: RCFGBuilder took 380.06ms. Allocated memory is still 339.7MB. Free memory was 293.1MB in the beginning and 281.0MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-26 18:34:12,869 INFO L158 Benchmark]: TraceAbstraction took 992.81ms. Allocated memory is still 339.7MB. Free memory was 280.6MB in the beginning and 280.9MB in the end (delta: -303.6kB). Peak memory consumption was 1.2MB. Max. memory is 16.0GB. [2023-08-26 18:34:12,871 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 339.7MB. Free memory is still 316.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 452.18ms. Allocated memory is still 339.7MB. Free memory was 315.1MB in the beginning and 296.2MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 59.24ms. Allocated memory is still 339.7MB. Free memory was 296.2MB in the beginning and 294.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 38.58ms. Allocated memory is still 339.7MB. Free memory was 294.6MB in the beginning and 293.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 380.06ms. Allocated memory is still 339.7MB. Free memory was 293.1MB in the beginning and 281.0MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 992.81ms. Allocated memory is still 339.7MB. Free memory was 280.6MB in the beginning and 280.9MB in the end (delta: -303.6kB). Peak memory consumption was 1.2MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.5s, 22 PlacesBefore, 4 PlacesAfterwards, 23 TransitionsBefore, 4 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 4 FixpointIterations, 20 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 23 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 58 locations, 3 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: 0.9s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.6s, 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, 2 IncrementalHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 2 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred 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, 2 NumberOfCodeBlocks, 2 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 1 ConstructedInterpolants, 0 QuantifiedInterpolants, 1 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-26 18:34:12,892 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...