/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 -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/36-apron_11-traces-max-simple_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 12:49:36,384 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 12:49:36,474 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 12:49:36,479 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 12:49:36,479 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 12:49:36,511 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 12:49:36,512 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 12:49:36,517 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 12:49:36,518 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 12:49:36,521 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 12:49:36,521 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 12:49:36,522 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 12:49:36,522 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 12:49:36,523 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 12:49:36,523 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 12:49:36,524 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 12:49:36,524 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 12:49:36,524 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 12:49:36,524 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 12:49:36,524 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 12:49:36,525 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 12:49:36,525 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 12:49:36,525 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 12:49:36,526 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 12:49:36,526 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 12:49:36,526 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 12:49:36,526 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 12:49:36,527 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 12:49:36,527 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 12:49:36,527 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 12:49:36,528 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 12:49:36,528 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 12:49:36,529 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 12:49:36,529 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 12:49:36,529 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 12:49:36,529 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-08-26 12:49:36,854 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 12:49:36,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 12:49:36,881 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 12:49:36,882 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 12:49:36,883 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 12:49:36,884 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/36-apron_11-traces-max-simple_true.i [2023-08-26 12:49:38,208 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 12:49:38,517 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 12:49:38,517 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_11-traces-max-simple_true.i [2023-08-26 12:49:38,534 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa236cc34/65e0bd4601b24585be3f35a2139174fb/FLAG9a7735b8f [2023-08-26 12:49:38,549 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa236cc34/65e0bd4601b24585be3f35a2139174fb [2023-08-26 12:49:38,554 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 12:49:38,555 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 12:49:38,557 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 12:49:38,557 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 12:49:38,560 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 12:49:38,561 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:49:38" (1/1) ... [2023-08-26 12:49:38,562 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a3a48b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:49:38, skipping insertion in model container [2023-08-26 12:49:38,562 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:49:38" (1/1) ... [2023-08-26 12:49:38,605 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 12:49:38,912 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 12:49:38,926 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 12:49:38,951 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [231] [2023-08-26 12:49:38,953 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-26 12:49:38,969 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 12:49:39,002 INFO L206 MainTranslator]: Completed translation [2023-08-26 12:49:39,003 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:49:39 WrapperNode [2023-08-26 12:49:39,003 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 12:49:39,004 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 12:49:39,004 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 12:49:39,004 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 12:49:39,010 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:49:39" (1/1) ... [2023-08-26 12:49:39,021 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:49:39" (1/1) ... [2023-08-26 12:49:39,037 INFO L138 Inliner]: procedures = 162, calls = 22, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 62 [2023-08-26 12:49:39,037 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 12:49:39,038 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 12:49:39,038 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 12:49:39,038 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 12:49:39,045 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:49:39" (1/1) ... [2023-08-26 12:49:39,045 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:49:39" (1/1) ... [2023-08-26 12:49:39,047 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:49:39" (1/1) ... [2023-08-26 12:49:39,048 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:49:39" (1/1) ... [2023-08-26 12:49:39,051 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:49:39" (1/1) ... [2023-08-26 12:49:39,053 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:49:39" (1/1) ... [2023-08-26 12:49:39,054 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:49:39" (1/1) ... [2023-08-26 12:49:39,055 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:49:39" (1/1) ... [2023-08-26 12:49:39,057 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 12:49:39,058 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 12:49:39,058 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 12:49:39,058 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 12:49:39,059 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:49:39" (1/1) ... [2023-08-26 12:49:39,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 12:49:39,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 12:49:39,086 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 12:49:39,114 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 12:49:39,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 12:49:39,126 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 12:49:39,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 12:49:39,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 12:49:39,128 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 12:49:39,128 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 12:49:39,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 12:49:39,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 12:49:39,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 12:49:39,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 12:49:39,130 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 12:49:39,230 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 12:49:39,231 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 12:49:39,338 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 12:49:39,343 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 12:49:39,343 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-26 12:49:39,345 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:49:39 BoogieIcfgContainer [2023-08-26 12:49:39,345 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 12:49:39,347 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 12:49:39,347 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 12:49:39,350 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 12:49:39,350 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 12:49:38" (1/3) ... [2023-08-26 12:49:39,351 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31c00a90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:49:39, skipping insertion in model container [2023-08-26 12:49:39,351 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:49:39" (2/3) ... [2023-08-26 12:49:39,351 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31c00a90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:49:39, skipping insertion in model container [2023-08-26 12:49:39,351 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:49:39" (3/3) ... [2023-08-26 12:49:39,352 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_11-traces-max-simple_true.i [2023-08-26 12:49:39,367 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 12:49:39,368 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-26 12:49:39,368 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 12:49:39,406 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 12:49:39,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 70 transitions, 145 flow [2023-08-26 12:49:39,472 INFO L124 PetriNetUnfolderBase]: 4/69 cut-off events. [2023-08-26 12:49:39,475 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:49:39,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 69 events. 4/69 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 79 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2023-08-26 12:49:39,481 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 70 transitions, 145 flow [2023-08-26 12:49:39,487 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 69 transitions, 141 flow [2023-08-26 12:49:39,491 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 12:49:39,506 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 69 transitions, 141 flow [2023-08-26 12:49:39,514 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 69 transitions, 141 flow [2023-08-26 12:49:39,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 69 transitions, 141 flow [2023-08-26 12:49:39,546 INFO L124 PetriNetUnfolderBase]: 4/69 cut-off events. [2023-08-26 12:49:39,547 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:49:39,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 69 events. 4/69 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 79 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2023-08-26 12:49:39,553 INFO L119 LiptonReduction]: Number of co-enabled transitions 912 [2023-08-26 12:49:41,510 INFO L134 LiptonReduction]: Checked pairs total: 1600 [2023-08-26 12:49:41,511 INFO L136 LiptonReduction]: Total number of compositions: 80 [2023-08-26 12:49:41,523 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 12:49:41,529 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;@6aeca51, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 12:49:41,529 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-26 12:49:41,530 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 12:49:41,531 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 12:49:41,531 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:49:41,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:49:41,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 12:49:41,532 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 3 more)] === [2023-08-26 12:49:41,536 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:49:41,536 INFO L85 PathProgramCache]: Analyzing trace with hash 287, now seen corresponding path program 1 times [2023-08-26 12:49:41,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:49:41,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362797545] [2023-08-26 12:49:41,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:49:41,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:49:41,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:49:41,638 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 12:49:41,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:49:41,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362797545] [2023-08-26 12:49:41,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362797545] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:49:41,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:49:41,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 12:49:41,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42463644] [2023-08-26 12:49:41,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:49:41,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 12:49:41,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:49:41,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 12:49:41,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 12:49:41,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 150 [2023-08-26 12:49:41,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 17 transitions, 37 flow. Second operand has 2 states, 2 states have (on average 63.5) internal successors, (127), 2 states have internal predecessors, (127), 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 12:49:41,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:49:41,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 150 [2023-08-26 12:49:41,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:49:41,705 INFO L124 PetriNetUnfolderBase]: 12/34 cut-off events. [2023-08-26 12:49:41,705 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:49:41,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 34 events. 12/34 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 86 event pairs, 12 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 63. Up to 34 conditions per place. [2023-08-26 12:49:41,707 INFO L140 encePairwiseOnDemand]: 145/150 looper letters, 7 selfloop transitions, 0 changer transitions 2/10 dead transitions. [2023-08-26 12:49:41,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 15 places, 10 transitions, 41 flow [2023-08-26 12:49:41,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 12:49:41,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 12:49:41,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 140 transitions. [2023-08-26 12:49:41,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2023-08-26 12:49:41,718 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 140 transitions. [2023-08-26 12:49:41,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 140 transitions. [2023-08-26 12:49:41,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:49:41,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 140 transitions. [2023-08-26 12:49:41,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 70.0) internal successors, (140), 2 states have internal predecessors, (140), 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 12:49:41,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 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 12:49:41,728 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 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 12:49:41,729 INFO L175 Difference]: Start difference. First operand has 19 places, 17 transitions, 37 flow. Second operand 2 states and 140 transitions. [2023-08-26 12:49:41,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 15 places, 10 transitions, 41 flow [2023-08-26 12:49:41,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 10 transitions, 40 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 12:49:41,733 INFO L231 Difference]: Finished difference. Result has 14 places, 8 transitions, 18 flow [2023-08-26 12:49:41,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=22, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=18, PETRI_PLACES=14, PETRI_TRANSITIONS=8} [2023-08-26 12:49:41,737 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, -5 predicate places. [2023-08-26 12:49:41,737 INFO L495 AbstractCegarLoop]: Abstraction has has 14 places, 8 transitions, 18 flow [2023-08-26 12:49:41,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 63.5) internal successors, (127), 2 states have internal predecessors, (127), 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 12:49:41,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:49:41,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 12:49:41,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 12:49:41,738 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 3 more)] === [2023-08-26 12:49:41,739 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:49:41,739 INFO L85 PathProgramCache]: Analyzing trace with hash 271497064, now seen corresponding path program 1 times [2023-08-26 12:49:41,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:49:41,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172080641] [2023-08-26 12:49:41,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:49:41,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:49:41,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:49:41,965 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 12:49:41,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:49:41,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172080641] [2023-08-26 12:49:41,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172080641] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:49:41,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:49:41,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 12:49:41,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968218747] [2023-08-26 12:49:41,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:49:41,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:49:41,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:49:41,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:49:41,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:49:41,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 150 [2023-08-26 12:49:41,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 8 transitions, 18 flow. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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 12:49:41,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:49:41,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 150 [2023-08-26 12:49:41,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:49:41,993 INFO L124 PetriNetUnfolderBase]: 6/23 cut-off events. [2023-08-26 12:49:41,994 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:49:41,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 23 events. 6/23 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 36 event pairs, 4 based on Foata normal form. 4/27 useless extension candidates. Maximal degree in co-relation 48. Up to 18 conditions per place. [2023-08-26 12:49:41,994 INFO L140 encePairwiseOnDemand]: 147/150 looper letters, 7 selfloop transitions, 2 changer transitions 2/11 dead transitions. [2023-08-26 12:49:41,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 14 places, 11 transitions, 46 flow [2023-08-26 12:49:41,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:49:41,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:49:41,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 177 transitions. [2023-08-26 12:49:41,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3933333333333333 [2023-08-26 12:49:41,997 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 177 transitions. [2023-08-26 12:49:41,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 177 transitions. [2023-08-26 12:49:41,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:49:41,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 177 transitions. [2023-08-26 12:49:41,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 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 12:49:42,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 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 12:49:42,001 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 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 12:49:42,001 INFO L175 Difference]: Start difference. First operand has 14 places, 8 transitions, 18 flow. Second operand 3 states and 177 transitions. [2023-08-26 12:49:42,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 14 places, 11 transitions, 46 flow [2023-08-26 12:49:42,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 11 transitions, 46 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 12:49:42,002 INFO L231 Difference]: Finished difference. Result has 15 places, 8 transitions, 26 flow [2023-08-26 12:49:42,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=18, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=26, PETRI_PLACES=15, PETRI_TRANSITIONS=8} [2023-08-26 12:49:42,003 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, -4 predicate places. [2023-08-26 12:49:42,003 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 8 transitions, 26 flow [2023-08-26 12:49:42,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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 12:49:42,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:49:42,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:49:42,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 12:49:42,004 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 3 more)] === [2023-08-26 12:49:42,004 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:49:42,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1083124812, now seen corresponding path program 1 times [2023-08-26 12:49:42,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:49:42,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046912758] [2023-08-26 12:49:42,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:49:42,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:49:42,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:49:42,092 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 12:49:42,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:49:42,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046912758] [2023-08-26 12:49:42,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046912758] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:49:42,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:49:42,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 12:49:42,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106069096] [2023-08-26 12:49:42,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:49:42,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:49:42,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:49:42,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:49:42,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:49:42,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 150 [2023-08-26 12:49:42,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 8 transitions, 26 flow. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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 12:49:42,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:49:42,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 150 [2023-08-26 12:49:42,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:49:42,106 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-08-26 12:49:42,106 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 12:49:42,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17 conditions, 5 events. 0/5 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 2 event pairs, 0 based on Foata normal form. 2/7 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2023-08-26 12:49:42,106 INFO L140 encePairwiseOnDemand]: 148/150 looper letters, 0 selfloop transitions, 0 changer transitions 5/5 dead transitions. [2023-08-26 12:49:42,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 14 places, 5 transitions, 23 flow [2023-08-26 12:49:42,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:49:42,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:49:42,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 165 transitions. [2023-08-26 12:49:42,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2023-08-26 12:49:42,108 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 165 transitions. [2023-08-26 12:49:42,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 165 transitions. [2023-08-26 12:49:42,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:49:42,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 165 transitions. [2023-08-26 12:49:42,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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 12:49:42,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 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 12:49:42,111 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 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 12:49:42,111 INFO L175 Difference]: Start difference. First operand has 15 places, 8 transitions, 26 flow. Second operand 3 states and 165 transitions. [2023-08-26 12:49:42,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 14 places, 5 transitions, 23 flow [2023-08-26 12:49:42,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 12 places, 5 transitions, 21 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 12:49:42,112 INFO L231 Difference]: Finished difference. Result has 12 places, 0 transitions, 0 flow [2023-08-26 12:49:42,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=13, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=12, PETRI_TRANSITIONS=0} [2023-08-26 12:49:42,113 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, -7 predicate places. [2023-08-26 12:49:42,113 INFO L495 AbstractCegarLoop]: Abstraction has has 12 places, 0 transitions, 0 flow [2023-08-26 12:49:42,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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 12:49:42,115 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 6 remaining) [2023-08-26 12:49:42,116 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 6 remaining) [2023-08-26 12:49:42,116 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (3 of 6 remaining) [2023-08-26 12:49:42,116 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-08-26 12:49:42,117 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONASSERT (1 of 6 remaining) [2023-08-26 12:49:42,117 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONASSERT (0 of 6 remaining) [2023-08-26 12:49:42,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 12:49:42,117 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-26 12:49:42,121 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 12:49:42,121 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 12:49:42,125 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 12:49:42 BasicIcfg [2023-08-26 12:49:42,125 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 12:49:42,126 INFO L158 Benchmark]: Toolchain (without parser) took 3570.44ms. Allocated memory was 385.9MB in the beginning and 476.1MB in the end (delta: 90.2MB). Free memory was 360.8MB in the beginning and 366.9MB in the end (delta: -6.1MB). Peak memory consumption was 84.5MB. Max. memory is 16.0GB. [2023-08-26 12:49:42,126 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 385.9MB. Free memory is still 361.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 12:49:42,126 INFO L158 Benchmark]: CACSL2BoogieTranslator took 445.90ms. Allocated memory is still 385.9MB. Free memory was 360.8MB in the beginning and 341.8MB in the end (delta: 19.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-26 12:49:42,127 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.60ms. Allocated memory is still 385.9MB. Free memory was 341.8MB in the beginning and 339.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 12:49:42,127 INFO L158 Benchmark]: Boogie Preprocessor took 19.27ms. Allocated memory is still 385.9MB. Free memory was 339.9MB in the beginning and 338.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 12:49:42,128 INFO L158 Benchmark]: RCFGBuilder took 287.64ms. Allocated memory is still 385.9MB. Free memory was 338.3MB in the beginning and 326.2MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-26 12:49:42,128 INFO L158 Benchmark]: TraceAbstraction took 2777.63ms. Allocated memory was 385.9MB in the beginning and 476.1MB in the end (delta: 90.2MB). Free memory was 325.2MB in the beginning and 366.9MB in the end (delta: -41.8MB). Peak memory consumption was 48.9MB. Max. memory is 16.0GB. [2023-08-26 12:49:42,130 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 385.9MB. Free memory is still 361.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 445.90ms. Allocated memory is still 385.9MB. Free memory was 360.8MB in the beginning and 341.8MB in the end (delta: 19.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 33.60ms. Allocated memory is still 385.9MB. Free memory was 341.8MB in the beginning and 339.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 19.27ms. Allocated memory is still 385.9MB. Free memory was 339.9MB in the beginning and 338.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 287.64ms. Allocated memory is still 385.9MB. Free memory was 338.3MB in the beginning and 326.2MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 2777.63ms. Allocated memory was 385.9MB in the beginning and 476.1MB in the end (delta: 90.2MB). Free memory was 325.2MB in the beginning and 366.9MB in the end (delta: -41.8MB). Peak memory consumption was 48.9MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 231]: Unsoundness Warning unspecified type, defaulting to int C: short [231] - GenericResultAtLocation [Line: 232]: Unsoundness Warning unspecified type, defaulting to int C: short [232] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.0s, 69 PlacesBefore, 19 PlacesAfterwards, 69 TransitionsBefore, 17 TransitionsAfterwards, 912 CoEnabledTransitionPairs, 6 FixpointIterations, 28 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 2 ChoiceCompositions, 80 TotalNumberOfCompositions, 1600 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1037, independent: 933, independent conditional: 0, independent unconditional: 933, dependent: 104, dependent conditional: 0, dependent unconditional: 104, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 540, independent: 516, independent conditional: 0, independent unconditional: 516, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1037, independent: 417, independent conditional: 0, independent unconditional: 417, dependent: 80, dependent conditional: 0, dependent unconditional: 80, unknown: 540, unknown conditional: 0, unknown unconditional: 540] , Statistics on independence cache: Total cache size (in pairs): 21, Positive cache size: 10, Positive conditional cache size: 0, Positive unconditional cache size: 10, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, 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 - PositiveResult [Line: 18]: assertion always holds For all program executions holds that assertion always holds at this location - 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, 86 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.7s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 33 IncrementalHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 1 mSDtfsCounter, 33 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, InterpolantAutomatonStates: 8, 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, 0.3s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 18 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-26 12:49:42,147 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...