/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.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/goblint-regression/36-apron_16-traces-unprot2_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 12:07:38,902 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 12:07:38,940 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 [2023-08-27 12:07:38,943 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 12:07:38,943 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 12:07:38,959 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 12:07:38,959 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 12:07:38,960 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 12:07:38,960 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 12:07:38,960 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 12:07:38,961 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 12:07:38,961 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 12:07:38,961 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 12:07:38,961 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 12:07:38,962 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 12:07:38,962 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 12:07:38,962 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 12:07:38,963 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 12:07:38,963 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 12:07:38,963 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 12:07:38,963 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 12:07:38,963 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 12:07:38,964 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 12:07:38,964 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 12:07:38,964 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 12:07:38,964 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 12:07:38,964 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 12:07:38,965 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 12:07:38,965 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 12:07:38,965 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 12:07:38,965 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 12:07:38,965 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 12:07:38,965 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 12:07:38,966 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 12:07:38,966 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 12:07:38,966 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 12:07:39,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 12:07:39,220 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 12:07:39,222 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 12:07:39,222 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 12:07:39,223 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 12:07:39,224 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/36-apron_16-traces-unprot2_true.i [2023-08-27 12:07:40,370 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 12:07:40,632 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 12:07:40,633 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_16-traces-unprot2_true.i [2023-08-27 12:07:40,645 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/241afaa8c/db362d6f43ac42dc9ca5277ddf3453ed/FLAG78de4ec94 [2023-08-27 12:07:40,662 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/241afaa8c/db362d6f43ac42dc9ca5277ddf3453ed [2023-08-27 12:07:40,666 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 12:07:40,668 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 12:07:40,671 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 12:07:40,671 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 12:07:40,673 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 12:07:40,673 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 12:07:40" (1/1) ... [2023-08-27 12:07:40,674 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19a374a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:07:40, skipping insertion in model container [2023-08-27 12:07:40,674 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 12:07:40" (1/1) ... [2023-08-27 12:07:40,712 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 12:07:40,974 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 12:07:40,982 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 12:07:41,008 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-27 12:07:41,010 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [233] [2023-08-27 12:07:41,031 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 12:07:41,057 INFO L206 MainTranslator]: Completed translation [2023-08-27 12:07:41,057 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:07:41 WrapperNode [2023-08-27 12:07:41,057 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 12:07:41,058 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 12:07:41,058 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 12:07:41,058 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 12:07:41,063 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:07:41" (1/1) ... [2023-08-27 12:07:41,070 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:07:41" (1/1) ... [2023-08-27 12:07:41,086 INFO L138 Inliner]: procedures = 162, calls = 13, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 47 [2023-08-27 12:07:41,086 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 12:07:41,087 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 12:07:41,087 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 12:07:41,087 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 12:07:41,092 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:07:41" (1/1) ... [2023-08-27 12:07:41,092 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:07:41" (1/1) ... [2023-08-27 12:07:41,104 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:07:41" (1/1) ... [2023-08-27 12:07:41,104 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:07:41" (1/1) ... [2023-08-27 12:07:41,107 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:07:41" (1/1) ... [2023-08-27 12:07:41,108 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:07:41" (1/1) ... [2023-08-27 12:07:41,109 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:07:41" (1/1) ... [2023-08-27 12:07:41,109 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:07:41" (1/1) ... [2023-08-27 12:07:41,111 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 12:07:41,111 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 12:07:41,111 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 12:07:41,111 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 12:07:41,112 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:07:41" (1/1) ... [2023-08-27 12:07:41,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 12:07:41,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 12:07:41,141 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) [2023-08-27 12:07:41,157 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 [2023-08-27 12:07:41,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 12:07:41,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 12:07:41,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 12:07:41,166 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-27 12:07:41,166 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-27 12:07:41,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 12:07:41,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 12:07:41,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 12:07:41,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 12:07:41,167 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 12:07:41,290 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 12:07:41,292 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 12:07:41,404 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 12:07:41,408 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 12:07:41,408 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-27 12:07:41,410 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 12:07:41 BoogieIcfgContainer [2023-08-27 12:07:41,410 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 12:07:41,411 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 12:07:41,411 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 12:07:41,413 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 12:07:41,413 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 12:07:40" (1/3) ... [2023-08-27 12:07:41,414 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66959c18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 12:07:41, skipping insertion in model container [2023-08-27 12:07:41,414 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:07:41" (2/3) ... [2023-08-27 12:07:41,414 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66959c18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 12:07:41, skipping insertion in model container [2023-08-27 12:07:41,414 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 12:07:41" (3/3) ... [2023-08-27 12:07:41,415 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_16-traces-unprot2_true.i [2023-08-27 12:07:41,429 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 12:07:41,429 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-27 12:07:41,429 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 12:07:41,471 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 12:07:41,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 53 transitions, 111 flow [2023-08-27 12:07:41,529 INFO L124 PetriNetUnfolderBase]: 2/52 cut-off events. [2023-08-27 12:07:41,530 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 12:07:41,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 52 events. 2/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 25. Up to 2 conditions per place. [2023-08-27 12:07:41,533 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 53 transitions, 111 flow [2023-08-27 12:07:41,536 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 42 transitions, 87 flow [2023-08-27 12:07:41,539 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 12:07:41,548 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 46 places, 42 transitions, 87 flow [2023-08-27 12:07:41,552 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 46 places, 42 transitions, 87 flow [2023-08-27 12:07:41,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 42 transitions, 87 flow [2023-08-27 12:07:41,573 INFO L124 PetriNetUnfolderBase]: 0/42 cut-off events. [2023-08-27 12:07:41,573 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 12:07:41,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 42 events. 0/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-08-27 12:07:41,574 INFO L119 LiptonReduction]: Number of co-enabled transitions 72 [2023-08-27 12:07:42,829 INFO L134 LiptonReduction]: Checked pairs total: 43 [2023-08-27 12:07:42,830 INFO L136 LiptonReduction]: Total number of compositions: 38 [2023-08-27 12:07:42,843 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 12:07:42,847 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;@77dcfc3f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 12:07:42,847 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-27 12:07:42,850 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 12:07:42,850 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-08-27 12:07:42,850 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 12:07:42,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:07:42,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 12:07:42,851 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 12:07:42,854 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:07:42,855 INFO L85 PathProgramCache]: Analyzing trace with hash 184511, now seen corresponding path program 1 times [2023-08-27 12:07:42,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:07:42,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973477012] [2023-08-27 12:07:42,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:07:42,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:07:42,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:07:42,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 12:07:42,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:07:42,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973477012] [2023-08-27 12:07:42,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973477012] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:07:42,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 12:07:42,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 12:07:42,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061403987] [2023-08-27 12:07:42,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:07:42,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-27 12:07:42,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:07:43,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-27 12:07:43,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-27 12:07:43,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 91 [2023-08-27 12:07:43,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 8 places, 4 transitions, 11 flow. Second operand has 2 states, 2 states have (on average 50.5) internal successors, (101), 2 states have internal predecessors, (101), 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) [2023-08-27 12:07:43,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:07:43,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 91 [2023-08-27 12:07:43,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:07:43,022 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-08-27 12:07:43,023 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 12:07:43,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11 conditions, 3 events. 0/3 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 2/5 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2023-08-27 12:07:43,024 INFO L140 encePairwiseOnDemand]: 90/91 looper letters, 0 selfloop transitions, 0 changer transitions 3/3 dead transitions. [2023-08-27 12:07:43,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 8 places, 3 transitions, 15 flow [2023-08-27 12:07:43,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-27 12:07:43,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-27 12:07:43,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 102 transitions. [2023-08-27 12:07:43,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5604395604395604 [2023-08-27 12:07:43,033 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 102 transitions. [2023-08-27 12:07:43,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 102 transitions. [2023-08-27 12:07:43,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:07:43,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 102 transitions. [2023-08-27 12:07:43,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 51.0) internal successors, (102), 2 states have internal predecessors, (102), 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) [2023-08-27 12:07:43,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 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) [2023-08-27 12:07:43,039 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 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) [2023-08-27 12:07:43,040 INFO L175 Difference]: Start difference. First operand has 8 places, 4 transitions, 11 flow. Second operand 2 states and 102 transitions. [2023-08-27 12:07:43,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 8 places, 3 transitions, 15 flow [2023-08-27 12:07:43,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 7 places, 3 transitions, 14 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 12:07:43,043 INFO L231 Difference]: Finished difference. Result has 7 places, 0 transitions, 0 flow [2023-08-27 12:07:43,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=8, PETRI_DIFFERENCE_MINUEND_PLACES=6, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=0, PETRI_PLACES=7, PETRI_TRANSITIONS=0} [2023-08-27 12:07:43,046 INFO L281 CegarLoopForPetriNet]: 8 programPoint places, -1 predicate places. [2023-08-27 12:07:43,046 INFO L495 AbstractCegarLoop]: Abstraction has has 7 places, 0 transitions, 0 flow [2023-08-27 12:07:43,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 50.5) internal successors, (101), 2 states have internal predecessors, (101), 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) [2023-08-27 12:07:43,048 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (1 of 2 remaining) [2023-08-27 12:07:43,048 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-27 12:07:43,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 12:07:43,049 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 12:07:43,051 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 12:07:43,051 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 12:07:43,054 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 12:07:43 BasicIcfg [2023-08-27 12:07:43,054 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 12:07:43,055 INFO L158 Benchmark]: Toolchain (without parser) took 2386.31ms. Allocated memory was 364.9MB in the beginning and 442.5MB in the end (delta: 77.6MB). Free memory was 339.8MB in the beginning and 394.4MB in the end (delta: -54.6MB). Peak memory consumption was 24.6MB. Max. memory is 16.0GB. [2023-08-27 12:07:43,055 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 364.9MB. Free memory is still 342.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 12:07:43,055 INFO L158 Benchmark]: CACSL2BoogieTranslator took 386.88ms. Allocated memory is still 364.9MB. Free memory was 339.8MB in the beginning and 321.5MB in the end (delta: 18.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-27 12:07:43,055 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.18ms. Allocated memory is still 364.9MB. Free memory was 321.0MB in the beginning and 319.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 12:07:43,056 INFO L158 Benchmark]: Boogie Preprocessor took 23.84ms. Allocated memory is still 364.9MB. Free memory was 319.4MB in the beginning and 317.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 12:07:43,056 INFO L158 Benchmark]: RCFGBuilder took 298.67ms. Allocated memory is still 364.9MB. Free memory was 317.9MB in the beginning and 306.8MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-27 12:07:43,056 INFO L158 Benchmark]: TraceAbstraction took 1642.70ms. Allocated memory was 364.9MB in the beginning and 442.5MB in the end (delta: 77.6MB). Free memory was 305.8MB in the beginning and 394.4MB in the end (delta: -88.6MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 12:07:43,058 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 364.9MB. Free memory is still 342.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 386.88ms. Allocated memory is still 364.9MB. Free memory was 339.8MB in the beginning and 321.5MB in the end (delta: 18.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 28.18ms. Allocated memory is still 364.9MB. Free memory was 321.0MB in the beginning and 319.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 23.84ms. Allocated memory is still 364.9MB. Free memory was 319.4MB in the beginning and 317.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 298.67ms. Allocated memory is still 364.9MB. Free memory was 317.9MB in the beginning and 306.8MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * TraceAbstraction took 1642.70ms. Allocated memory was 364.9MB in the beginning and 442.5MB in the end (delta: 77.6MB). Free memory was 305.8MB in the beginning and 394.4MB in the end (delta: -88.6MB). There was no memory consumed. 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: 1.3s, 46 PlacesBefore, 8 PlacesAfterwards, 42 TransitionsBefore, 4 TransitionsAfterwards, 72 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 13 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 38 TotalNumberOfCompositions, 43 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 43, independent: 43, independent conditional: 0, independent unconditional: 43, 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: 35, independent: 35, independent conditional: 0, independent unconditional: 35, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 43, independent: 8, independent conditional: 0, independent unconditional: 8, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 35, unknown conditional: 0, unknown unconditional: 35] , 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: 18]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 57 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.6s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, 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, 3 IncrementalHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 3 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=11occurred 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, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 2 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-27 12:07:43,089 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...