/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_37-traces-ex-4_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 12:27:45,875 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 12:27:45,960 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 12:27:45,964 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 12:27:45,965 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 12:27:45,995 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 12:27:45,996 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 12:27:46,001 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 12:27:46,002 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 12:27:46,006 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 12:27:46,006 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 12:27:46,006 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 12:27:46,006 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 12:27:46,008 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 12:27:46,008 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 12:27:46,008 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 12:27:46,008 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 12:27:46,008 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 12:27:46,009 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 12:27:46,009 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 12:27:46,009 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 12:27:46,009 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 12:27:46,010 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 12:27:46,010 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 12:27:46,011 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 12:27:46,011 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 12:27:46,011 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 12:27:46,011 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 12:27:46,011 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 12:27:46,012 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 12:27:46,013 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 12:27:46,013 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 12:27:46,013 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 12:27:46,013 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 12:27:46,013 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 12:27:46,014 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-08-26 12:27:46,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 12:27:46,351 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 12:27:46,353 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 12:27:46,354 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 12:27:46,354 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 12:27:46,356 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_37-traces-ex-4_true.i [2023-08-26 12:27:47,485 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 12:27:47,720 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 12:27:47,720 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_37-traces-ex-4_true.i [2023-08-26 12:27:47,738 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fcab1eeb/ab471d594b2d4ed98daa1ef094001f95/FLAG9674be3ab [2023-08-26 12:27:47,753 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fcab1eeb/ab471d594b2d4ed98daa1ef094001f95 [2023-08-26 12:27:47,757 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 12:27:47,758 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 12:27:47,759 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 12:27:47,759 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 12:27:47,762 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 12:27:47,762 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:27:47" (1/1) ... [2023-08-26 12:27:47,763 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6abc576a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:27:47, skipping insertion in model container [2023-08-26 12:27:47,763 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:27:47" (1/1) ... [2023-08-26 12:27:47,802 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 12:27:48,120 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 12:27:48,135 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 12:27:48,159 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [231] [2023-08-26 12:27:48,161 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-26 12:27:48,172 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 12:27:48,215 INFO L206 MainTranslator]: Completed translation [2023-08-26 12:27:48,216 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:27:48 WrapperNode [2023-08-26 12:27:48,216 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 12:27:48,217 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 12:27:48,217 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 12:27:48,217 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 12:27:48,224 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:27:48" (1/1) ... [2023-08-26 12:27:48,244 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:27:48" (1/1) ... [2023-08-26 12:27:48,266 INFO L138 Inliner]: procedures = 162, calls = 30, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 52 [2023-08-26 12:27:48,267 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 12:27:48,268 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 12:27:48,268 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 12:27:48,269 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 12:27:48,275 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:27:48" (1/1) ... [2023-08-26 12:27:48,276 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:27:48" (1/1) ... [2023-08-26 12:27:48,285 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:27:48" (1/1) ... [2023-08-26 12:27:48,286 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:27:48" (1/1) ... [2023-08-26 12:27:48,294 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:27:48" (1/1) ... [2023-08-26 12:27:48,296 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:27:48" (1/1) ... [2023-08-26 12:27:48,297 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:27:48" (1/1) ... [2023-08-26 12:27:48,298 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:27:48" (1/1) ... [2023-08-26 12:27:48,300 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 12:27:48,301 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 12:27:48,301 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 12:27:48,301 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 12:27:48,302 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:27:48" (1/1) ... [2023-08-26 12:27:48,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 12:27:48,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 12:27:48,335 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 12:27:48,353 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 12:27:48,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 12:27:48,383 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 12:27:48,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 12:27:48,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 12:27:48,384 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 12:27:48,385 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 12:27:48,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 12:27:48,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 12:27:48,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 12:27:48,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 12:27:48,386 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 12:27:48,525 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 12:27:48,526 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 12:27:48,648 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 12:27:48,654 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 12:27:48,654 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-26 12:27:48,656 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:27:48 BoogieIcfgContainer [2023-08-26 12:27:48,656 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 12:27:48,658 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 12:27:48,658 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 12:27:48,661 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 12:27:48,661 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 12:27:47" (1/3) ... [2023-08-26 12:27:48,662 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24fab2ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:27:48, skipping insertion in model container [2023-08-26 12:27:48,662 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:27:48" (2/3) ... [2023-08-26 12:27:48,662 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24fab2ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:27:48, skipping insertion in model container [2023-08-26 12:27:48,662 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:27:48" (3/3) ... [2023-08-26 12:27:48,663 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_37-traces-ex-4_true.i [2023-08-26 12:27:48,679 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 12:27:48,679 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-08-26 12:27:48,679 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 12:27:48,745 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 12:27:48,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 71 transitions, 147 flow [2023-08-26 12:27:48,832 INFO L124 PetriNetUnfolderBase]: 2/70 cut-off events. [2023-08-26 12:27:48,833 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:27:48,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 70 events. 2/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 60 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2023-08-26 12:27:48,839 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 71 transitions, 147 flow [2023-08-26 12:27:48,843 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 58 transitions, 119 flow [2023-08-26 12:27:48,847 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 12:27:48,864 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 58 transitions, 119 flow [2023-08-26 12:27:48,868 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 62 places, 58 transitions, 119 flow [2023-08-26 12:27:48,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 58 transitions, 119 flow [2023-08-26 12:27:48,916 INFO L124 PetriNetUnfolderBase]: 0/58 cut-off events. [2023-08-26 12:27:48,917 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:27:48,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 58 events. 0/58 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 30 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-08-26 12:27:48,918 INFO L119 LiptonReduction]: Number of co-enabled transitions 364 [2023-08-26 12:27:51,350 INFO L134 LiptonReduction]: Checked pairs total: 874 [2023-08-26 12:27:51,350 INFO L136 LiptonReduction]: Total number of compositions: 49 [2023-08-26 12:27:51,361 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 12:27:51,366 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;@50d86794, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 12:27:51,367 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-26 12:27:51,368 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 12:27:51,368 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 12:27:51,368 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:27:51,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:27:51,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 12:27:51,369 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 12:27:51,373 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:27:51,373 INFO L85 PathProgramCache]: Analyzing trace with hash 245, now seen corresponding path program 1 times [2023-08-26 12:27:51,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:27:51,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256339831] [2023-08-26 12:27:51,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:27:51,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:27:51,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:27:51,457 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 12:27:51,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:27:51,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256339831] [2023-08-26 12:27:51,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256339831] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:27:51,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:27:51,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 12:27:51,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888412860] [2023-08-26 12:27:51,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:27:51,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 12:27:51,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:27:51,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 12:27:51,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 12:27:51,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 120 [2023-08-26 12:27:51,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 15 transitions, 33 flow. Second operand has 2 states, 2 states have (on average 67.5) internal successors, (135), 2 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:27:51,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:27:51,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 120 [2023-08-26 12:27:51,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:27:51,521 INFO L124 PetriNetUnfolderBase]: 12/41 cut-off events. [2023-08-26 12:27:51,521 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:27:51,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 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 82 event pairs, 12 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 70. Up to 34 conditions per place. [2023-08-26 12:27:51,523 INFO L140 encePairwiseOnDemand]: 118/120 looper letters, 9 selfloop transitions, 0 changer transitions 0/13 dead transitions. [2023-08-26 12:27:51,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 13 transitions, 47 flow [2023-08-26 12:27:51,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 12:27:51,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 12:27:51,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 145 transitions. [2023-08-26 12:27:51,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2023-08-26 12:27:51,535 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 145 transitions. [2023-08-26 12:27:51,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 145 transitions. [2023-08-26 12:27:51,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:27:51,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 145 transitions. [2023-08-26 12:27:51,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 72.5) internal successors, (145), 2 states have internal predecessors, (145), 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 12:27:51,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 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 12:27:51,544 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 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 12:27:51,545 INFO L175 Difference]: Start difference. First operand has 19 places, 15 transitions, 33 flow. Second operand 2 states and 145 transitions. [2023-08-26 12:27:51,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 13 transitions, 47 flow [2023-08-26 12:27:51,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 13 transitions, 46 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 12:27:51,548 INFO L231 Difference]: Finished difference. Result has 17 places, 13 transitions, 28 flow [2023-08-26 12:27:51,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=28, PETRI_PLACES=17, PETRI_TRANSITIONS=13} [2023-08-26 12:27:51,552 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, -2 predicate places. [2023-08-26 12:27:51,553 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 13 transitions, 28 flow [2023-08-26 12:27:51,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 67.5) internal successors, (135), 2 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:27:51,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:27:51,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 12:27:51,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 12:27:51,554 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 12:27:51,554 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:27:51,554 INFO L85 PathProgramCache]: Analyzing trace with hash 230481426, now seen corresponding path program 1 times [2023-08-26 12:27:51,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:27:51,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222723593] [2023-08-26 12:27:51,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:27:51,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:27:51,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:27:51,786 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 12:27:51,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:27:51,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222723593] [2023-08-26 12:27:51,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222723593] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:27:51,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:27:51,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 12:27:51,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293238308] [2023-08-26 12:27:51,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:27:51,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:27:51,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:27:51,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:27:51,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:27:51,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 120 [2023-08-26 12:27:51,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 13 transitions, 28 flow. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 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 12:27:51,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:27:51,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 120 [2023-08-26 12:27:51,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:27:51,825 INFO L124 PetriNetUnfolderBase]: 13/46 cut-off events. [2023-08-26 12:27:51,826 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:27:51,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 46 events. 13/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 87 event pairs, 9 based on Foata normal form. 5/51 useless extension candidates. Maximal degree in co-relation 87. Up to 26 conditions per place. [2023-08-26 12:27:51,827 INFO L140 encePairwiseOnDemand]: 116/120 looper letters, 10 selfloop transitions, 3 changer transitions 0/15 dead transitions. [2023-08-26 12:27:51,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 15 transitions, 58 flow [2023-08-26 12:27:51,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:27:51,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:27:51,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 203 transitions. [2023-08-26 12:27:51,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5638888888888889 [2023-08-26 12:27:51,834 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 203 transitions. [2023-08-26 12:27:51,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 203 transitions. [2023-08-26 12:27:51,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:27:51,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 203 transitions. [2023-08-26 12:27:51,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 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 12:27:51,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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 12:27:51,844 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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 12:27:51,844 INFO L175 Difference]: Start difference. First operand has 17 places, 13 transitions, 28 flow. Second operand 3 states and 203 transitions. [2023-08-26 12:27:51,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 15 transitions, 58 flow [2023-08-26 12:27:51,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 15 transitions, 58 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 12:27:51,845 INFO L231 Difference]: Finished difference. Result has 20 places, 13 transitions, 39 flow [2023-08-26 12:27:51,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=39, PETRI_PLACES=20, PETRI_TRANSITIONS=13} [2023-08-26 12:27:51,846 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 1 predicate places. [2023-08-26 12:27:51,846 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 13 transitions, 39 flow [2023-08-26 12:27:51,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 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 12:27:51,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:27:51,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:27:51,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 12:27:51,851 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 12:27:51,853 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:27:51,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1992185042, now seen corresponding path program 1 times [2023-08-26 12:27:51,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:27:51,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597150577] [2023-08-26 12:27:51,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:27:51,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:27:51,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:27:51,991 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 12:27:51,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:27:51,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597150577] [2023-08-26 12:27:51,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597150577] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:27:51,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:27:51,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 12:27:51,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743715696] [2023-08-26 12:27:51,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:27:51,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:27:51,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:27:51,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:27:51,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:27:51,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 120 [2023-08-26 12:27:51,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 13 transitions, 39 flow. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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 12:27:51,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:27:51,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 120 [2023-08-26 12:27:51,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:27:52,034 INFO L124 PetriNetUnfolderBase]: 7/36 cut-off events. [2023-08-26 12:27:52,034 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 12:27:52,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 36 events. 7/36 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 70 event pairs, 0 based on Foata normal form. 4/40 useless extension candidates. Maximal degree in co-relation 78. Up to 17 conditions per place. [2023-08-26 12:27:52,035 INFO L140 encePairwiseOnDemand]: 115/120 looper letters, 8 selfloop transitions, 4 changer transitions 3/17 dead transitions. [2023-08-26 12:27:52,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 17 transitions, 77 flow [2023-08-26 12:27:52,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:27:52,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:27:52,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 170 transitions. [2023-08-26 12:27:52,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2023-08-26 12:27:52,038 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 170 transitions. [2023-08-26 12:27:52,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 170 transitions. [2023-08-26 12:27:52,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:27:52,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 170 transitions. [2023-08-26 12:27:52,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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 12:27:52,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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 12:27:52,042 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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 12:27:52,042 INFO L175 Difference]: Start difference. First operand has 20 places, 13 transitions, 39 flow. Second operand 3 states and 170 transitions. [2023-08-26 12:27:52,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 17 transitions, 77 flow [2023-08-26 12:27:52,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 17 transitions, 71 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 12:27:52,043 INFO L231 Difference]: Finished difference. Result has 21 places, 13 transitions, 47 flow [2023-08-26 12:27:52,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=33, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=47, PETRI_PLACES=21, PETRI_TRANSITIONS=13} [2023-08-26 12:27:52,045 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 2 predicate places. [2023-08-26 12:27:52,048 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 13 transitions, 47 flow [2023-08-26 12:27:52,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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 12:27:52,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:27:52,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:27:52,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 12:27:52,049 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 12:27:52,050 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:27:52,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1834754111, now seen corresponding path program 1 times [2023-08-26 12:27:52,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:27:52,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135536064] [2023-08-26 12:27:52,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:27:52,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:27:52,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:27:52,222 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 12:27:52,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:27:52,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135536064] [2023-08-26 12:27:52,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135536064] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:27:52,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:27:52,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 12:27:52,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464302880] [2023-08-26 12:27:52,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:27:52,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 12:27:52,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:27:52,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 12:27:52,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 12:27:52,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 120 [2023-08-26 12:27:52,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 13 transitions, 47 flow. Second operand has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 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 12:27:52,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:27:52,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 120 [2023-08-26 12:27:52,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:27:52,249 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-08-26 12:27:52,249 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 12:27:52,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 10 events. 0/10 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 2/12 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2023-08-26 12:27:52,249 INFO L140 encePairwiseOnDemand]: 117/120 looper letters, 0 selfloop transitions, 0 changer transitions 10/10 dead transitions. [2023-08-26 12:27:52,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 10 transitions, 50 flow [2023-08-26 12:27:52,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 12:27:52,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 12:27:52,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 189 transitions. [2023-08-26 12:27:52,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2023-08-26 12:27:52,251 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 189 transitions. [2023-08-26 12:27:52,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 189 transitions. [2023-08-26 12:27:52,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:27:52,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 189 transitions. [2023-08-26 12:27:52,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 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 12:27:52,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 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 12:27:52,254 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 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 12:27:52,254 INFO L175 Difference]: Start difference. First operand has 21 places, 13 transitions, 47 flow. Second operand 4 states and 189 transitions. [2023-08-26 12:27:52,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 10 transitions, 50 flow [2023-08-26 12:27:52,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 10 transitions, 41 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-26 12:27:52,255 INFO L231 Difference]: Finished difference. Result has 18 places, 0 transitions, 0 flow [2023-08-26 12:27:52,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, 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 12:27:52,256 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, -1 predicate places. [2023-08-26 12:27:52,256 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 0 transitions, 0 flow [2023-08-26 12:27:52,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 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 12:27:52,260 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 4 remaining) [2023-08-26 12:27:52,260 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 4 remaining) [2023-08-26 12:27:52,260 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (1 of 4 remaining) [2023-08-26 12:27:52,260 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-26 12:27:52,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 12:27:52,261 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-26 12:27:52,264 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 12:27:52,264 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 12:27:52,270 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 12:27:52 BasicIcfg [2023-08-26 12:27:52,270 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 12:27:52,272 INFO L158 Benchmark]: Toolchain (without parser) took 4512.17ms. Allocated memory was 383.8MB in the beginning and 497.0MB in the end (delta: 113.2MB). Free memory was 358.7MB in the beginning and 391.5MB in the end (delta: -32.8MB). Peak memory consumption was 79.9MB. Max. memory is 16.0GB. [2023-08-26 12:27:52,273 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 383.8MB. Free memory is still 360.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 12:27:52,273 INFO L158 Benchmark]: CACSL2BoogieTranslator took 456.98ms. Allocated memory is still 383.8MB. Free memory was 358.7MB in the beginning and 339.9MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-26 12:27:52,273 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.77ms. Allocated memory is still 383.8MB. Free memory was 339.9MB in the beginning and 337.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 12:27:52,273 INFO L158 Benchmark]: Boogie Preprocessor took 32.38ms. Allocated memory is still 383.8MB. Free memory was 337.8MB in the beginning and 336.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 12:27:52,274 INFO L158 Benchmark]: RCFGBuilder took 355.06ms. Allocated memory is still 383.8MB. Free memory was 336.2MB in the beginning and 322.9MB in the end (delta: 13.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-26 12:27:52,278 INFO L158 Benchmark]: TraceAbstraction took 3612.05ms. Allocated memory was 383.8MB in the beginning and 497.0MB in the end (delta: 113.2MB). Free memory was 322.4MB in the beginning and 391.5MB in the end (delta: -69.2MB). Peak memory consumption was 44.3MB. Max. memory is 16.0GB. [2023-08-26 12:27:52,279 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 383.8MB. Free memory is still 360.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 456.98ms. Allocated memory is still 383.8MB. Free memory was 358.7MB in the beginning and 339.9MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 49.77ms. Allocated memory is still 383.8MB. Free memory was 339.9MB in the beginning and 337.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 32.38ms. Allocated memory is still 383.8MB. Free memory was 337.8MB in the beginning and 336.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 355.06ms. Allocated memory is still 383.8MB. Free memory was 336.2MB in the beginning and 322.9MB in the end (delta: 13.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 3612.05ms. Allocated memory was 383.8MB in the beginning and 497.0MB in the end (delta: 113.2MB). Free memory was 322.4MB in the beginning and 391.5MB in the end (delta: -69.2MB). Peak memory consumption was 44.3MB. 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: 2.5s, 62 PlacesBefore, 19 PlacesAfterwards, 58 TransitionsBefore, 15 TransitionsAfterwards, 364 CoEnabledTransitionPairs, 6 FixpointIterations, 33 TrivialSequentialCompositions, 16 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 49 TotalNumberOfCompositions, 874 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 452, independent: 334, independent conditional: 0, independent unconditional: 334, dependent: 118, dependent conditional: 0, dependent unconditional: 118, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 193, independent: 171, independent conditional: 0, independent unconditional: 171, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 452, independent: 163, independent conditional: 0, independent unconditional: 163, dependent: 96, dependent conditional: 0, dependent unconditional: 96, unknown: 193, unknown conditional: 0, unknown unconditional: 193] , Statistics on independence cache: Total cache size (in pairs): 14, Positive cache size: 5, Positive conditional cache size: 0, Positive unconditional cache size: 5, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, 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, 86 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: 3.5s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 54 IncrementalHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 2 mSDtfsCounter, 54 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 109 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 12:27:52,302 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...