/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/13-privatized_42-traces-ex-mini_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 12:27:58,012 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 12:27:58,056 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 12:27:58,060 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 12:27:58,061 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 12:27:58,081 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 12:27:58,081 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 12:27:58,082 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 12:27:58,082 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 12:27:58,085 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 12:27:58,085 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 12:27:58,085 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 12:27:58,086 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 12:27:58,086 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 12:27:58,087 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 12:27:58,087 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 12:27:58,087 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 12:27:58,087 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 12:27:58,087 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 12:27:58,087 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 12:27:58,088 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 12:27:58,088 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 12:27:58,088 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 12:27:58,089 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 12:27:58,089 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 12:27:58,089 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 12:27:58,089 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 12:27:58,089 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 12:27:58,090 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 12:27:58,090 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 12:27:58,090 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 12:27:58,091 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 12:27:58,091 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 12:27:58,091 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 12:27:58,091 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 12:27:58,091 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-08-26 12:27:58,359 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 12:27:58,377 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 12:27:58,380 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 12:27:58,380 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 12:27:58,381 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 12:27:58,382 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_42-traces-ex-mini_true.i [2023-08-26 12:27:59,384 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 12:27:59,622 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 12:27:59,622 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_42-traces-ex-mini_true.i [2023-08-26 12:27:59,636 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ae96b0e3/9866343e3cd048fe9ccd409a7768e53c/FLAG1b176776e [2023-08-26 12:27:59,647 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ae96b0e3/9866343e3cd048fe9ccd409a7768e53c [2023-08-26 12:27:59,650 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 12:27:59,653 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 12:27:59,655 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 12:27:59,655 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 12:27:59,657 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 12:27:59,658 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:27:59" (1/1) ... [2023-08-26 12:27:59,658 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c0ed351 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:27:59, skipping insertion in model container [2023-08-26 12:27:59,659 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:27:59" (1/1) ... [2023-08-26 12:27:59,692 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 12:27:59,921 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 12:27:59,932 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 12:27:59,954 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [231] [2023-08-26 12:27:59,955 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-26 12:27:59,968 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 12:27:59,997 INFO L206 MainTranslator]: Completed translation [2023-08-26 12:27:59,998 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:27:59 WrapperNode [2023-08-26 12:27:59,998 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 12:27:59,999 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 12:27:59,999 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 12:27:59,999 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 12:28:00,003 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:27:59" (1/1) ... [2023-08-26 12:28:00,027 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:27:59" (1/1) ... [2023-08-26 12:28:00,040 INFO L138 Inliner]: procedures = 162, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 62 [2023-08-26 12:28:00,040 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 12:28:00,041 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 12:28:00,041 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 12:28:00,041 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 12:28:00,046 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:27:59" (1/1) ... [2023-08-26 12:28:00,046 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:27:59" (1/1) ... [2023-08-26 12:28:00,049 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:27:59" (1/1) ... [2023-08-26 12:28:00,049 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:27:59" (1/1) ... [2023-08-26 12:28:00,055 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:27:59" (1/1) ... [2023-08-26 12:28:00,056 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:27:59" (1/1) ... [2023-08-26 12:28:00,057 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:27:59" (1/1) ... [2023-08-26 12:28:00,057 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:27:59" (1/1) ... [2023-08-26 12:28:00,059 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 12:28:00,059 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 12:28:00,059 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 12:28:00,059 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 12:28:00,060 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:27:59" (1/1) ... [2023-08-26 12:28:00,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 12:28:00,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 12:28:00,080 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 12:28:00,089 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 12:28:00,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 12:28:00,104 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 12:28:00,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 12:28:00,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 12:28:00,105 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 12:28:00,105 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 12:28:00,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 12:28:00,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 12:28:00,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 12:28:00,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 12:28:00,106 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 12:28:00,181 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 12:28:00,182 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 12:28:00,305 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 12:28:00,309 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 12:28:00,309 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-26 12:28:00,310 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:28:00 BoogieIcfgContainer [2023-08-26 12:28:00,311 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 12:28:00,312 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 12:28:00,312 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 12:28:00,314 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 12:28:00,314 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 12:27:59" (1/3) ... [2023-08-26 12:28:00,314 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24b27dd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:28:00, skipping insertion in model container [2023-08-26 12:28:00,315 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:27:59" (2/3) ... [2023-08-26 12:28:00,315 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24b27dd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:28:00, skipping insertion in model container [2023-08-26 12:28:00,315 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:28:00" (3/3) ... [2023-08-26 12:28:00,316 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_42-traces-ex-mini_true.i [2023-08-26 12:28:00,326 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 12:28:00,326 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-08-26 12:28:00,326 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 12:28:00,354 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 12:28:00,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 78 transitions, 161 flow [2023-08-26 12:28:00,404 INFO L124 PetriNetUnfolderBase]: 2/77 cut-off events. [2023-08-26 12:28:00,405 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:28:00,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 77 events. 2/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 40 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2023-08-26 12:28:00,407 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 78 transitions, 161 flow [2023-08-26 12:28:00,410 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 64 transitions, 131 flow [2023-08-26 12:28:00,412 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 12:28:00,417 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 64 transitions, 131 flow [2023-08-26 12:28:00,419 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 64 transitions, 131 flow [2023-08-26 12:28:00,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 64 transitions, 131 flow [2023-08-26 12:28:00,431 INFO L124 PetriNetUnfolderBase]: 0/64 cut-off events. [2023-08-26 12:28:00,431 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:28:00,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 64 events. 0/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 26 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-08-26 12:28:00,432 INFO L119 LiptonReduction]: Number of co-enabled transitions 330 [2023-08-26 12:28:02,735 INFO L134 LiptonReduction]: Checked pairs total: 766 [2023-08-26 12:28:02,735 INFO L136 LiptonReduction]: Total number of compositions: 58 [2023-08-26 12:28:02,744 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 12:28:02,748 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;@5e862532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 12:28:02,748 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-26 12:28:02,749 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 12:28:02,749 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-08-26 12:28:02,749 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:28:02,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:28:02,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 12:28:02,750 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 1 more)] === [2023-08-26 12:28:02,753 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:28:02,753 INFO L85 PathProgramCache]: Analyzing trace with hash 264, now seen corresponding path program 1 times [2023-08-26 12:28:02,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:28:02,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708547484] [2023-08-26 12:28:02,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:28:02,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:28:02,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:28:02,822 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 12:28:02,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:28:02,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708547484] [2023-08-26 12:28:02,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708547484] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:28:02,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:28:02,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 12:28:02,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868041158] [2023-08-26 12:28:02,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:28:02,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 12:28:02,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:28:02,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 12:28:02,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 12:28:02,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 136 [2023-08-26 12:28:02,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 14 transitions, 31 flow. Second operand has 2 states, 2 states have (on average 74.5) internal successors, (149), 2 states have internal predecessors, (149), 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 12:28:02,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:28:02,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 136 [2023-08-26 12:28:02,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:28:02,873 INFO L124 PetriNetUnfolderBase]: 12/36 cut-off events. [2023-08-26 12:28:02,873 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:28:02,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 36 events. 12/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 88 event pairs, 12 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 65. Up to 34 conditions per place. [2023-08-26 12:28:02,874 INFO L140 encePairwiseOnDemand]: 134/136 looper letters, 9 selfloop transitions, 0 changer transitions 0/12 dead transitions. [2023-08-26 12:28:02,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 12 transitions, 45 flow [2023-08-26 12:28:02,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 12:28:02,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 12:28:02,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 159 transitions. [2023-08-26 12:28:02,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5845588235294118 [2023-08-26 12:28:02,883 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 159 transitions. [2023-08-26 12:28:02,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 159 transitions. [2023-08-26 12:28:02,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:28:02,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 159 transitions. [2023-08-26 12:28:02,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 79.5) internal successors, (159), 2 states have internal predecessors, (159), 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 12:28:02,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 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 12:28:02,889 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 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 12:28:02,890 INFO L175 Difference]: Start difference. First operand has 18 places, 14 transitions, 31 flow. Second operand 2 states and 159 transitions. [2023-08-26 12:28:02,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 12 transitions, 45 flow [2023-08-26 12:28:02,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 12 transitions, 44 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 12:28:02,892 INFO L231 Difference]: Finished difference. Result has 16 places, 12 transitions, 26 flow [2023-08-26 12:28:02,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=26, PETRI_PLACES=16, PETRI_TRANSITIONS=12} [2023-08-26 12:28:02,895 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, -2 predicate places. [2023-08-26 12:28:02,895 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 12 transitions, 26 flow [2023-08-26 12:28:02,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 74.5) internal successors, (149), 2 states have internal predecessors, (149), 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 12:28:02,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:28:02,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 12:28:02,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 12:28:02,896 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 1 more)] === [2023-08-26 12:28:02,896 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:28:02,896 INFO L85 PathProgramCache]: Analyzing trace with hash -833362958, now seen corresponding path program 1 times [2023-08-26 12:28:02,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:28:02,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008655449] [2023-08-26 12:28:02,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:28:02,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:28:02,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:28:03,066 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 12:28:03,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:28:03,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008655449] [2023-08-26 12:28:03,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008655449] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:28:03,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:28:03,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 12:28:03,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44633690] [2023-08-26 12:28:03,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:28:03,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:28:03,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:28:03,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:28:03,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:28:03,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 136 [2023-08-26 12:28:03,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 12 transitions, 26 flow. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 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 12:28:03,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:28:03,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 136 [2023-08-26 12:28:03,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:28:03,092 INFO L124 PetriNetUnfolderBase]: 12/41 cut-off events. [2023-08-26 12:28:03,092 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:28:03,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 41 events. 12/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 90 event pairs, 9 based on Foata normal form. 4/44 useless extension candidates. Maximal degree in co-relation 79. Up to 28 conditions per place. [2023-08-26 12:28:03,092 INFO L140 encePairwiseOnDemand]: 132/136 looper letters, 10 selfloop transitions, 3 changer transitions 0/15 dead transitions. [2023-08-26 12:28:03,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 15 transitions, 58 flow [2023-08-26 12:28:03,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:28:03,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:28:03,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2023-08-26 12:28:03,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5490196078431373 [2023-08-26 12:28:03,095 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 224 transitions. [2023-08-26 12:28:03,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 224 transitions. [2023-08-26 12:28:03,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:28:03,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 224 transitions. [2023-08-26 12:28:03,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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 12:28:03,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 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 12:28:03,098 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 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 12:28:03,098 INFO L175 Difference]: Start difference. First operand has 16 places, 12 transitions, 26 flow. Second operand 3 states and 224 transitions. [2023-08-26 12:28:03,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 15 transitions, 58 flow [2023-08-26 12:28:03,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 15 transitions, 58 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 12:28:03,098 INFO L231 Difference]: Finished difference. Result has 19 places, 12 transitions, 37 flow [2023-08-26 12:28:03,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=37, PETRI_PLACES=19, PETRI_TRANSITIONS=12} [2023-08-26 12:28:03,099 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 1 predicate places. [2023-08-26 12:28:03,099 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 12 transitions, 37 flow [2023-08-26 12:28:03,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 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 12:28:03,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:28:03,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:28:03,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 12:28:03,100 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 1 more)] === [2023-08-26 12:28:03,100 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:28:03,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1380222885, now seen corresponding path program 1 times [2023-08-26 12:28:03,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:28:03,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961972600] [2023-08-26 12:28:03,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:28:03,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:28:03,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:28:03,195 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 12:28:03,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:28:03,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961972600] [2023-08-26 12:28:03,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961972600] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:28:03,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:28:03,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 12:28:03,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214982814] [2023-08-26 12:28:03,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:28:03,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:28:03,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:28:03,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:28:03,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:28:03,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 136 [2023-08-26 12:28:03,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 12 transitions, 37 flow. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 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 12:28:03,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:28:03,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 136 [2023-08-26 12:28:03,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:28:03,227 INFO L124 PetriNetUnfolderBase]: 11/40 cut-off events. [2023-08-26 12:28:03,227 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-26 12:28:03,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 40 events. 11/40 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 79 event pairs, 6 based on Foata normal form. 3/42 useless extension candidates. Maximal degree in co-relation 90. Up to 22 conditions per place. [2023-08-26 12:28:03,227 INFO L140 encePairwiseOnDemand]: 132/136 looper letters, 9 selfloop transitions, 4 changer transitions 2/16 dead transitions. [2023-08-26 12:28:03,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 16 transitions, 75 flow [2023-08-26 12:28:03,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:28:03,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:28:03,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 191 transitions. [2023-08-26 12:28:03,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4681372549019608 [2023-08-26 12:28:03,233 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 191 transitions. [2023-08-26 12:28:03,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 191 transitions. [2023-08-26 12:28:03,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:28:03,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 191 transitions. [2023-08-26 12:28:03,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 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 12:28:03,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 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 12:28:03,235 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 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 12:28:03,236 INFO L175 Difference]: Start difference. First operand has 19 places, 12 transitions, 37 flow. Second operand 3 states and 191 transitions. [2023-08-26 12:28:03,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 16 transitions, 75 flow [2023-08-26 12:28:03,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 16 transitions, 69 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 12:28:03,236 INFO L231 Difference]: Finished difference. Result has 19 places, 12 transitions, 39 flow [2023-08-26 12:28:03,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=31, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=39, PETRI_PLACES=19, PETRI_TRANSITIONS=12} [2023-08-26 12:28:03,237 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 1 predicate places. [2023-08-26 12:28:03,237 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 12 transitions, 39 flow [2023-08-26 12:28:03,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 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 12:28:03,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:28:03,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:28:03,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 12:28:03,238 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 1 more)] === [2023-08-26 12:28:03,238 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:28:03,238 INFO L85 PathProgramCache]: Analyzing trace with hash -416193554, now seen corresponding path program 1 times [2023-08-26 12:28:03,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:28:03,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255649024] [2023-08-26 12:28:03,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:28:03,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:28:03,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:28:03,403 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 12:28:03,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:28:03,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255649024] [2023-08-26 12:28:03,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255649024] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:28:03,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:28:03,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 12:28:03,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309050715] [2023-08-26 12:28:03,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:28:03,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 12:28:03,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:28:03,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 12:28:03,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-26 12:28:03,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 136 [2023-08-26 12:28:03,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 12 transitions, 39 flow. Second operand has 5 states, 5 states have (on average 54.0) internal successors, (270), 5 states have internal predecessors, (270), 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 12:28:03,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:28:03,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 136 [2023-08-26 12:28:03,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:28:03,431 INFO L124 PetriNetUnfolderBase]: 9/30 cut-off events. [2023-08-26 12:28:03,432 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 12:28:03,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 30 events. 9/30 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 56 event pairs, 2 based on Foata normal form. 1/31 useless extension candidates. Maximal degree in co-relation 70. Up to 18 conditions per place. [2023-08-26 12:28:03,432 INFO L140 encePairwiseOnDemand]: 133/136 looper letters, 0 selfloop transitions, 0 changer transitions 13/13 dead transitions. [2023-08-26 12:28:03,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 13 transitions, 61 flow [2023-08-26 12:28:03,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 12:28:03,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 12:28:03,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 221 transitions. [2023-08-26 12:28:03,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2023-08-26 12:28:03,434 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 221 transitions. [2023-08-26 12:28:03,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 221 transitions. [2023-08-26 12:28:03,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:28:03,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 221 transitions. [2023-08-26 12:28:03,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 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 12:28:03,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 136.0) internal successors, (680), 5 states have internal predecessors, (680), 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 12:28:03,438 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 136.0) internal successors, (680), 5 states have internal predecessors, (680), 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 12:28:03,438 INFO L175 Difference]: Start difference. First operand has 19 places, 12 transitions, 39 flow. Second operand 4 states and 221 transitions. [2023-08-26 12:28:03,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 13 transitions, 61 flow [2023-08-26 12:28:03,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 13 transitions, 55 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 12:28:03,439 INFO L231 Difference]: Finished difference. Result has 18 places, 0 transitions, 0 flow [2023-08-26 12:28:03,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=25, PETRI_DIFFERENCE_MINUEND_PLACES=15, 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=4, PETRI_FLOW=0, PETRI_PLACES=18, PETRI_TRANSITIONS=0} [2023-08-26 12:28:03,440 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 0 predicate places. [2023-08-26 12:28:03,440 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 0 transitions, 0 flow [2023-08-26 12:28:03,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 54.0) internal successors, (270), 5 states have internal predecessors, (270), 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 12:28:03,442 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 4 remaining) [2023-08-26 12:28:03,442 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 4 remaining) [2023-08-26 12:28:03,442 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (1 of 4 remaining) [2023-08-26 12:28:03,443 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-26 12:28:03,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 12:28:03,443 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-26 12:28:03,447 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 12:28:03,447 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 12:28:03,452 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 12:28:03 BasicIcfg [2023-08-26 12:28:03,452 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 12:28:03,453 INFO L158 Benchmark]: Toolchain (without parser) took 3799.87ms. Allocated memory was 337.6MB in the beginning and 461.4MB in the end (delta: 123.7MB). Free memory was 312.1MB in the beginning and 422.4MB in the end (delta: -110.3MB). Peak memory consumption was 14.2MB. Max. memory is 16.0GB. [2023-08-26 12:28:03,453 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 337.6MB. Free memory was 315.4MB in the beginning and 315.2MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 12:28:03,453 INFO L158 Benchmark]: CACSL2BoogieTranslator took 343.54ms. Allocated memory is still 337.6MB. Free memory was 312.1MB in the beginning and 293.2MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-26 12:28:03,454 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.42ms. Allocated memory is still 337.6MB. Free memory was 293.2MB in the beginning and 291.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 12:28:03,455 INFO L158 Benchmark]: Boogie Preprocessor took 17.82ms. Allocated memory is still 337.6MB. Free memory was 291.1MB in the beginning and 289.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 12:28:03,456 INFO L158 Benchmark]: RCFGBuilder took 251.51ms. Allocated memory is still 337.6MB. Free memory was 289.7MB in the beginning and 276.4MB in the end (delta: 13.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-26 12:28:03,458 INFO L158 Benchmark]: TraceAbstraction took 3140.20ms. Allocated memory was 337.6MB in the beginning and 461.4MB in the end (delta: 123.7MB). Free memory was 275.7MB in the beginning and 422.4MB in the end (delta: -146.7MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 12:28:03,460 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 337.6MB. Free memory was 315.4MB in the beginning and 315.2MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 343.54ms. Allocated memory is still 337.6MB. Free memory was 312.1MB in the beginning and 293.2MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 41.42ms. Allocated memory is still 337.6MB. Free memory was 293.2MB in the beginning and 291.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 17.82ms. Allocated memory is still 337.6MB. Free memory was 291.1MB in the beginning and 289.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 251.51ms. Allocated memory is still 337.6MB. Free memory was 289.7MB in the beginning and 276.4MB in the end (delta: 13.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 3140.20ms. Allocated memory was 337.6MB in the beginning and 461.4MB in the end (delta: 123.7MB). Free memory was 275.7MB in the beginning and 422.4MB in the end (delta: -146.7MB). There was no memory consumed. 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: 2.3s, 68 PlacesBefore, 18 PlacesAfterwards, 64 TransitionsBefore, 14 TransitionsAfterwards, 330 CoEnabledTransitionPairs, 6 FixpointIterations, 42 TrivialSequentialCompositions, 16 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 58 TotalNumberOfCompositions, 766 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 392, independent: 291, independent conditional: 0, independent unconditional: 291, dependent: 101, dependent conditional: 0, dependent unconditional: 101, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 168, independent: 152, independent conditional: 0, independent unconditional: 152, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 392, independent: 139, independent conditional: 0, independent unconditional: 139, dependent: 85, dependent conditional: 0, dependent unconditional: 85, unknown: 168, unknown conditional: 0, unknown unconditional: 168] , Statistics on independence cache: Total cache size (in pairs): 16, Positive cache size: 9, Positive conditional cache size: 0, Positive unconditional cache size: 9, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, 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 - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 90 locations, 4 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: 3.1s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 62 IncrementalHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 2 mSDtfsCounter, 62 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=3, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 89 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-26 12:28:03,478 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...