/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true --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/weaver/test-hard1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-30 05:40:59,171 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-30 05:40:59,257 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-NoLbe.epf [2023-11-30 05:40:59,288 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-30 05:40:59,289 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-30 05:40:59,290 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-30 05:40:59,290 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-30 05:40:59,291 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-30 05:40:59,291 INFO L153 SettingsManager]: * Use SBE=true [2023-11-30 05:40:59,294 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-30 05:40:59,295 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-30 05:40:59,295 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-30 05:40:59,296 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-30 05:40:59,297 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-30 05:40:59,297 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-30 05:40:59,297 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-30 05:40:59,297 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-30 05:40:59,298 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-30 05:40:59,298 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-30 05:40:59,298 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-30 05:40:59,298 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-30 05:40:59,299 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-30 05:40:59,299 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-30 05:40:59,299 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-30 05:40:59,299 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-30 05:40:59,300 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 05:40:59,300 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-30 05:40:59,300 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-30 05:40:59,300 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-30 05:40:59,301 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-30 05:40:59,302 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-30 05:40:59,302 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-30 05:40:59,302 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-30 05:40:59,302 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-11-30 05:40:59,549 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-30 05:40:59,570 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-30 05:40:59,572 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-30 05:40:59,573 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-30 05:40:59,574 INFO L274 PluginConnector]: CDTParser initialized [2023-11-30 05:40:59,575 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-hard1.wvr.c [2023-11-30 05:41:00,654 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-30 05:41:00,850 INFO L384 CDTParser]: Found 1 translation units. [2023-11-30 05:41:00,851 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-hard1.wvr.c [2023-11-30 05:41:00,858 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ada84b0bb/e901a4bcaeb640ab901f10439864c0f2/FLAGf49997118 [2023-11-30 05:41:00,877 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ada84b0bb/e901a4bcaeb640ab901f10439864c0f2 [2023-11-30 05:41:00,879 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-30 05:41:00,880 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-30 05:41:00,883 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-30 05:41:00,883 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-30 05:41:00,887 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-30 05:41:00,888 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 05:41:00" (1/1) ... [2023-11-30 05:41:00,889 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ab3110f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:41:00, skipping insertion in model container [2023-11-30 05:41:00,890 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 05:41:00" (1/1) ... [2023-11-30 05:41:00,919 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-30 05:41:01,114 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 05:41:01,123 INFO L202 MainTranslator]: Completed pre-run [2023-11-30 05:41:01,145 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 05:41:01,151 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-30 05:41:01,151 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-30 05:41:01,157 INFO L206 MainTranslator]: Completed translation [2023-11-30 05:41:01,157 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:41:01 WrapperNode [2023-11-30 05:41:01,157 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-30 05:41:01,158 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-30 05:41:01,158 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-30 05:41:01,158 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-30 05:41:01,163 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:41:01" (1/1) ... [2023-11-30 05:41:01,170 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:41:01" (1/1) ... [2023-11-30 05:41:01,186 INFO L138 Inliner]: procedures = 24, calls = 57, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 99 [2023-11-30 05:41:01,186 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-30 05:41:01,187 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-30 05:41:01,187 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-30 05:41:01,187 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-30 05:41:01,199 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:41:01" (1/1) ... [2023-11-30 05:41:01,199 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:41:01" (1/1) ... [2023-11-30 05:41:01,202 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:41:01" (1/1) ... [2023-11-30 05:41:01,202 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:41:01" (1/1) ... [2023-11-30 05:41:01,210 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:41:01" (1/1) ... [2023-11-30 05:41:01,213 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:41:01" (1/1) ... [2023-11-30 05:41:01,215 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:41:01" (1/1) ... [2023-11-30 05:41:01,216 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:41:01" (1/1) ... [2023-11-30 05:41:01,218 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-30 05:41:01,219 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-30 05:41:01,219 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-30 05:41:01,219 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-30 05:41:01,220 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:41:01" (1/1) ... [2023-11-30 05:41:01,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 05:41:01,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 05:41:01,253 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) [2023-11-30 05:41:01,259 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 [2023-11-30 05:41:01,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-30 05:41:01,276 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-30 05:41:01,276 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-30 05:41:01,276 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-30 05:41:01,276 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-30 05:41:01,276 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-30 05:41:01,277 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-30 05:41:01,277 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-30 05:41:01,277 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-30 05:41:01,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-30 05:41:01,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-30 05:41:01,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-30 05:41:01,277 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-30 05:41:01,277 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-30 05:41:01,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-30 05:41:01,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-30 05:41:01,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-30 05:41:01,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-30 05:41:01,279 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-30 05:41:01,362 INFO L241 CfgBuilder]: Building ICFG [2023-11-30 05:41:01,364 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-30 05:41:01,656 INFO L282 CfgBuilder]: Performing block encoding [2023-11-30 05:41:01,713 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-30 05:41:01,713 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-30 05:41:01,714 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 05:41:01 BoogieIcfgContainer [2023-11-30 05:41:01,715 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-30 05:41:01,717 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-30 05:41:01,717 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-30 05:41:01,719 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-30 05:41:01,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 05:41:00" (1/3) ... [2023-11-30 05:41:01,720 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@325289d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 05:41:01, skipping insertion in model container [2023-11-30 05:41:01,724 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:41:01" (2/3) ... [2023-11-30 05:41:01,724 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@325289d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 05:41:01, skipping insertion in model container [2023-11-30 05:41:01,724 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 05:41:01" (3/3) ... [2023-11-30 05:41:01,725 INFO L112 eAbstractionObserver]: Analyzing ICFG test-hard1.wvr.c [2023-11-30 05:41:01,738 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-30 05:41:01,738 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-30 05:41:01,738 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-30 05:41:01,871 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-30 05:41:01,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 158 transitions, 344 flow [2023-11-30 05:41:01,987 INFO L124 PetriNetUnfolderBase]: 10/154 cut-off events. [2023-11-30 05:41:01,987 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-30 05:41:01,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 154 events. 10/154 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 132 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 104. Up to 2 conditions per place. [2023-11-30 05:41:01,994 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 158 transitions, 344 flow [2023-11-30 05:41:01,998 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 128 transitions, 277 flow [2023-11-30 05:41:02,006 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 05:41:02,014 INFO L362 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@58c84236, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 05:41:02,014 INFO L363 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-11-30 05:41:02,024 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 05:41:02,024 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2023-11-30 05:41:02,024 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 05:41:02,024 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:41:02,025 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 05:41:02,025 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-30 05:41:02,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:41:02,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1942363257, now seen corresponding path program 1 times [2023-11-30 05:41:02,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:41:02,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852981741] [2023-11-30 05:41:02,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:41:02,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:41:02,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:41:02,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:41:02,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:41:02,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852981741] [2023-11-30 05:41:02,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852981741] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:41:02,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:41:02,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 05:41:02,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908663489] [2023-11-30 05:41:02,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:41:02,645 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 05:41:02,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:41:02,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 05:41:02,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 05:41:02,681 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 158 [2023-11-30 05:41:02,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 128 transitions, 277 flow. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 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) [2023-11-30 05:41:02,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:41:02,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 158 [2023-11-30 05:41:02,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:41:02,943 INFO L124 PetriNetUnfolderBase]: 358/774 cut-off events. [2023-11-30 05:41:02,944 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2023-11-30 05:41:02,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1323 conditions, 774 events. 358/774 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3401 event pairs, 183 based on Foata normal form. 345/1034 useless extension candidates. Maximal degree in co-relation 928. Up to 481 conditions per place. [2023-11-30 05:41:02,961 INFO L140 encePairwiseOnDemand]: 150/158 looper letters, 34 selfloop transitions, 1 changer transitions 1/121 dead transitions. [2023-11-30 05:41:02,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 121 transitions, 333 flow [2023-11-30 05:41:02,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 05:41:02,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 05:41:02,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 363 transitions. [2023-11-30 05:41:02,977 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7658227848101266 [2023-11-30 05:41:02,978 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 363 transitions. [2023-11-30 05:41:02,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 363 transitions. [2023-11-30 05:41:02,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:41:02,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 363 transitions. [2023-11-30 05:41:02,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 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) [2023-11-30 05:41:02,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 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) [2023-11-30 05:41:02,991 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 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) [2023-11-30 05:41:02,995 INFO L307 CegarLoopForPetriNet]: 132 programPoint places, 0 predicate places. [2023-11-30 05:41:02,996 INFO L500 AbstractCegarLoop]: Abstraction has has 132 places, 121 transitions, 333 flow [2023-11-30 05:41:02,996 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 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) [2023-11-30 05:41:02,997 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:41:02,997 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 05:41:02,997 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-30 05:41:02,998 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-30 05:41:02,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:41:02,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1942363256, now seen corresponding path program 1 times [2023-11-30 05:41:02,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:41:02,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746927027] [2023-11-30 05:41:02,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:41:02,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:41:03,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:41:03,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:41:03,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:41:03,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746927027] [2023-11-30 05:41:03,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746927027] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:41:03,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:41:03,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 05:41:03,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866603705] [2023-11-30 05:41:03,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:41:03,365 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 05:41:03,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:41:03,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 05:41:03,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-30 05:41:03,367 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 158 [2023-11-30 05:41:03,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 121 transitions, 333 flow. Second operand has 4 states, 4 states have (on average 103.25) internal successors, (413), 4 states have internal predecessors, (413), 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) [2023-11-30 05:41:03,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:41:03,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 158 [2023-11-30 05:41:03,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:41:03,537 INFO L124 PetriNetUnfolderBase]: 363/804 cut-off events. [2023-11-30 05:41:03,538 INFO L125 PetriNetUnfolderBase]: For 158/178 co-relation queries the response was YES. [2023-11-30 05:41:03,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1843 conditions, 804 events. 363/804 cut-off events. For 158/178 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3707 event pairs, 185 based on Foata normal form. 0/726 useless extension candidates. Maximal degree in co-relation 1207. Up to 497 conditions per place. [2023-11-30 05:41:03,548 INFO L140 encePairwiseOnDemand]: 155/158 looper letters, 38 selfloop transitions, 1 changer transitions 1/119 dead transitions. [2023-11-30 05:41:03,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 119 transitions, 403 flow [2023-11-30 05:41:03,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 05:41:03,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 05:41:03,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 344 transitions. [2023-11-30 05:41:03,550 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7257383966244726 [2023-11-30 05:41:03,550 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 344 transitions. [2023-11-30 05:41:03,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 344 transitions. [2023-11-30 05:41:03,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:41:03,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 344 transitions. [2023-11-30 05:41:03,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 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) [2023-11-30 05:41:03,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 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) [2023-11-30 05:41:03,555 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 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) [2023-11-30 05:41:03,556 INFO L307 CegarLoopForPetriNet]: 132 programPoint places, 0 predicate places. [2023-11-30 05:41:03,557 INFO L500 AbstractCegarLoop]: Abstraction has has 132 places, 119 transitions, 403 flow [2023-11-30 05:41:03,557 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.25) internal successors, (413), 4 states have internal predecessors, (413), 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) [2023-11-30 05:41:03,557 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:41:03,557 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 05:41:03,557 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-30 05:41:03,557 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-30 05:41:03,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:41:03,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1338963983, now seen corresponding path program 1 times [2023-11-30 05:41:03,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:41:03,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502162091] [2023-11-30 05:41:03,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:41:03,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:41:03,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:41:03,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:41:03,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:41:03,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502162091] [2023-11-30 05:41:03,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502162091] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:41:03,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:41:03,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 05:41:03,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262543101] [2023-11-30 05:41:03,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:41:03,743 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 05:41:03,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:41:03,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 05:41:03,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-30 05:41:03,746 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 158 [2023-11-30 05:41:03,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 119 transitions, 403 flow. Second operand has 4 states, 4 states have (on average 103.75) internal successors, (415), 4 states have internal predecessors, (415), 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) [2023-11-30 05:41:03,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:41:03,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 158 [2023-11-30 05:41:03,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:41:03,923 INFO L124 PetriNetUnfolderBase]: 319/730 cut-off events. [2023-11-30 05:41:03,924 INFO L125 PetriNetUnfolderBase]: For 313/359 co-relation queries the response was YES. [2023-11-30 05:41:03,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2089 conditions, 730 events. 319/730 cut-off events. For 313/359 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3331 event pairs, 159 based on Foata normal form. 9/674 useless extension candidates. Maximal degree in co-relation 1480. Up to 433 conditions per place. [2023-11-30 05:41:03,933 INFO L140 encePairwiseOnDemand]: 153/158 looper letters, 34 selfloop transitions, 1 changer transitions 1/115 dead transitions. [2023-11-30 05:41:03,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 115 transitions, 453 flow [2023-11-30 05:41:03,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 05:41:03,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 05:41:03,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 342 transitions. [2023-11-30 05:41:03,935 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7215189873417721 [2023-11-30 05:41:03,935 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 342 transitions. [2023-11-30 05:41:03,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 342 transitions. [2023-11-30 05:41:03,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:41:03,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 342 transitions. [2023-11-30 05:41:03,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 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) [2023-11-30 05:41:03,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 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) [2023-11-30 05:41:03,937 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 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) [2023-11-30 05:41:03,939 INFO L307 CegarLoopForPetriNet]: 132 programPoint places, -2 predicate places. [2023-11-30 05:41:03,939 INFO L500 AbstractCegarLoop]: Abstraction has has 130 places, 115 transitions, 453 flow [2023-11-30 05:41:03,939 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.75) internal successors, (415), 4 states have internal predecessors, (415), 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) [2023-11-30 05:41:03,939 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:41:03,940 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 05:41:03,940 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-30 05:41:03,940 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-30 05:41:03,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:41:03,941 INFO L85 PathProgramCache]: Analyzing trace with hash -667978044, now seen corresponding path program 1 times [2023-11-30 05:41:03,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:41:03,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309415048] [2023-11-30 05:41:03,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:41:03,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:41:03,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:41:04,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:41:04,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:41:04,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309415048] [2023-11-30 05:41:04,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309415048] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:41:04,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:41:04,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 05:41:04,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558572355] [2023-11-30 05:41:04,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:41:04,052 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 05:41:04,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:41:04,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 05:41:04,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 05:41:04,058 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 158 [2023-11-30 05:41:04,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 115 transitions, 453 flow. Second operand has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 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) [2023-11-30 05:41:04,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:41:04,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 158 [2023-11-30 05:41:04,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:41:04,203 INFO L124 PetriNetUnfolderBase]: 305/698 cut-off events. [2023-11-30 05:41:04,203 INFO L125 PetriNetUnfolderBase]: For 564/632 co-relation queries the response was YES. [2023-11-30 05:41:04,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2397 conditions, 698 events. 305/698 cut-off events. For 564/632 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3127 event pairs, 151 based on Foata normal form. 0/643 useless extension candidates. Maximal degree in co-relation 1707. Up to 411 conditions per place. [2023-11-30 05:41:04,215 INFO L140 encePairwiseOnDemand]: 155/158 looper letters, 30 selfloop transitions, 1 changer transitions 1/113 dead transitions. [2023-11-30 05:41:04,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 113 transitions, 499 flow [2023-11-30 05:41:04,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 05:41:04,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 05:41:04,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 354 transitions. [2023-11-30 05:41:04,217 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7468354430379747 [2023-11-30 05:41:04,217 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 354 transitions. [2023-11-30 05:41:04,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 354 transitions. [2023-11-30 05:41:04,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:41:04,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 354 transitions. [2023-11-30 05:41:04,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 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) [2023-11-30 05:41:04,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 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) [2023-11-30 05:41:04,220 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 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) [2023-11-30 05:41:04,220 INFO L307 CegarLoopForPetriNet]: 132 programPoint places, -2 predicate places. [2023-11-30 05:41:04,220 INFO L500 AbstractCegarLoop]: Abstraction has has 130 places, 113 transitions, 499 flow [2023-11-30 05:41:04,221 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 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) [2023-11-30 05:41:04,221 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:41:04,221 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 05:41:04,221 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-30 05:41:04,221 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-30 05:41:04,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:41:04,222 INFO L85 PathProgramCache]: Analyzing trace with hash -667978043, now seen corresponding path program 1 times [2023-11-30 05:41:04,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:41:04,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370326508] [2023-11-30 05:41:04,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:41:04,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:41:04,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:41:04,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:41:04,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:41:04,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370326508] [2023-11-30 05:41:04,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370326508] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:41:04,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:41:04,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 05:41:04,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380443305] [2023-11-30 05:41:04,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:41:04,385 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 05:41:04,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:41:04,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 05:41:04,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 05:41:04,387 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 158 [2023-11-30 05:41:04,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 113 transitions, 499 flow. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 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) [2023-11-30 05:41:04,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:41:04,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 158 [2023-11-30 05:41:04,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:41:04,522 INFO L124 PetriNetUnfolderBase]: 291/666 cut-off events. [2023-11-30 05:41:04,522 INFO L125 PetriNetUnfolderBase]: For 919/1011 co-relation queries the response was YES. [2023-11-30 05:41:04,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2668 conditions, 666 events. 291/666 cut-off events. For 919/1011 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2912 event pairs, 143 based on Foata normal form. 6/631 useless extension candidates. Maximal degree in co-relation 1914. Up to 389 conditions per place. [2023-11-30 05:41:04,532 INFO L140 encePairwiseOnDemand]: 155/158 looper letters, 27 selfloop transitions, 1 changer transitions 1/111 dead transitions. [2023-11-30 05:41:04,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 111 transitions, 539 flow [2023-11-30 05:41:04,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 05:41:04,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 05:41:04,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 363 transitions. [2023-11-30 05:41:04,534 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7658227848101266 [2023-11-30 05:41:04,534 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 363 transitions. [2023-11-30 05:41:04,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 363 transitions. [2023-11-30 05:41:04,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:41:04,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 363 transitions. [2023-11-30 05:41:04,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 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) [2023-11-30 05:41:04,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 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) [2023-11-30 05:41:04,537 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 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) [2023-11-30 05:41:04,539 INFO L307 CegarLoopForPetriNet]: 132 programPoint places, -2 predicate places. [2023-11-30 05:41:04,539 INFO L500 AbstractCegarLoop]: Abstraction has has 130 places, 111 transitions, 539 flow [2023-11-30 05:41:04,540 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 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) [2023-11-30 05:41:04,540 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:41:04,541 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 05:41:04,544 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-30 05:41:04,544 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-30 05:41:04,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:41:04,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1177019927, now seen corresponding path program 1 times [2023-11-30 05:41:04,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:41:04,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689499198] [2023-11-30 05:41:04,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:41:04,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:41:04,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:41:04,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:41:04,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:41:04,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689499198] [2023-11-30 05:41:04,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689499198] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:41:04,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:41:04,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 05:41:04,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389481202] [2023-11-30 05:41:04,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:41:04,665 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 05:41:04,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:41:04,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 05:41:04,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 05:41:04,668 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 158 [2023-11-30 05:41:04,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 111 transitions, 539 flow. Second operand has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 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) [2023-11-30 05:41:04,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:41:04,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 158 [2023-11-30 05:41:04,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:41:04,804 INFO L124 PetriNetUnfolderBase]: 266/611 cut-off events. [2023-11-30 05:41:04,804 INFO L125 PetriNetUnfolderBase]: For 1179/1279 co-relation queries the response was YES. [2023-11-30 05:41:04,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2816 conditions, 611 events. 266/611 cut-off events. For 1179/1279 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2535 event pairs, 130 based on Foata normal form. 10/584 useless extension candidates. Maximal degree in co-relation 1967. Up to 354 conditions per place. [2023-11-30 05:41:04,815 INFO L140 encePairwiseOnDemand]: 155/158 looper letters, 27 selfloop transitions, 1 changer transitions 1/109 dead transitions. [2023-11-30 05:41:04,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 109 transitions, 579 flow [2023-11-30 05:41:04,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 05:41:04,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 05:41:04,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 363 transitions. [2023-11-30 05:41:04,817 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7658227848101266 [2023-11-30 05:41:04,817 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 363 transitions. [2023-11-30 05:41:04,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 363 transitions. [2023-11-30 05:41:04,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:41:04,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 363 transitions. [2023-11-30 05:41:04,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 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) [2023-11-30 05:41:04,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 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) [2023-11-30 05:41:04,821 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 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) [2023-11-30 05:41:04,823 INFO L307 CegarLoopForPetriNet]: 132 programPoint places, -2 predicate places. [2023-11-30 05:41:04,824 INFO L500 AbstractCegarLoop]: Abstraction has has 130 places, 109 transitions, 579 flow [2023-11-30 05:41:04,824 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 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) [2023-11-30 05:41:04,824 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:41:04,824 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 05:41:04,824 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-30 05:41:04,824 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-30 05:41:04,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:41:04,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1177019926, now seen corresponding path program 1 times [2023-11-30 05:41:04,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:41:04,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839609359] [2023-11-30 05:41:04,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:41:04,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:41:04,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:41:04,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:41:04,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:41:04,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839609359] [2023-11-30 05:41:04,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839609359] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:41:04,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:41:04,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 05:41:04,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164860830] [2023-11-30 05:41:04,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:41:04,899 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 05:41:04,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:41:04,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 05:41:04,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 05:41:04,901 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 158 [2023-11-30 05:41:04,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 109 transitions, 579 flow. Second operand has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 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) [2023-11-30 05:41:04,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:41:04,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 158 [2023-11-30 05:41:04,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:41:05,015 INFO L124 PetriNetUnfolderBase]: 241/556 cut-off events. [2023-11-30 05:41:05,016 INFO L125 PetriNetUnfolderBase]: For 1490/1610 co-relation queries the response was YES. [2023-11-30 05:41:05,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2885 conditions, 556 events. 241/556 cut-off events. For 1490/1610 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2163 event pairs, 117 based on Foata normal form. 10/533 useless extension candidates. Maximal degree in co-relation 1948. Up to 319 conditions per place. [2023-11-30 05:41:05,021 INFO L140 encePairwiseOnDemand]: 155/158 looper letters, 0 selfloop transitions, 0 changer transitions 107/107 dead transitions. [2023-11-30 05:41:05,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 107 transitions, 609 flow [2023-11-30 05:41:05,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 05:41:05,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 05:41:05,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 350 transitions. [2023-11-30 05:41:05,023 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7383966244725738 [2023-11-30 05:41:05,023 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 350 transitions. [2023-11-30 05:41:05,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 350 transitions. [2023-11-30 05:41:05,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:41:05,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 350 transitions. [2023-11-30 05:41:05,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 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) [2023-11-30 05:41:05,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 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) [2023-11-30 05:41:05,025 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 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) [2023-11-30 05:41:05,027 INFO L307 CegarLoopForPetriNet]: 132 programPoint places, -2 predicate places. [2023-11-30 05:41:05,027 INFO L500 AbstractCegarLoop]: Abstraction has has 130 places, 107 transitions, 609 flow [2023-11-30 05:41:05,028 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 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) [2023-11-30 05:41:05,035 INFO L143 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/test-hard1.wvr.c_BEv2_AllErrorsAtOnce [2023-11-30 05:41:05,072 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 20 remaining) [2023-11-30 05:41:05,073 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 20 remaining) [2023-11-30 05:41:05,073 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 20 remaining) [2023-11-30 05:41:05,073 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 20 remaining) [2023-11-30 05:41:05,073 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 20 remaining) [2023-11-30 05:41:05,073 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 20 remaining) [2023-11-30 05:41:05,073 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 20 remaining) [2023-11-30 05:41:05,073 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 20 remaining) [2023-11-30 05:41:05,074 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 20 remaining) [2023-11-30 05:41:05,074 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 20 remaining) [2023-11-30 05:41:05,074 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 20 remaining) [2023-11-30 05:41:05,074 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 20 remaining) [2023-11-30 05:41:05,074 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 20 remaining) [2023-11-30 05:41:05,074 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 20 remaining) [2023-11-30 05:41:05,074 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 20 remaining) [2023-11-30 05:41:05,074 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 20 remaining) [2023-11-30 05:41:05,074 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 20 remaining) [2023-11-30 05:41:05,075 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 20 remaining) [2023-11-30 05:41:05,075 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 20 remaining) [2023-11-30 05:41:05,075 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 20 remaining) [2023-11-30 05:41:05,075 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-30 05:41:05,076 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-11-30 05:41:05,081 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-30 05:41:05,082 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-11-30 05:41:05,092 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 05:41:05 BasicIcfg [2023-11-30 05:41:05,092 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-30 05:41:05,093 INFO L158 Benchmark]: Toolchain (without parser) took 4212.38ms. Allocated memory is still 490.7MB. Free memory was 440.6MB in the beginning and 239.5MB in the end (delta: 201.2MB). Peak memory consumption was 202.2MB. Max. memory is 16.0GB. [2023-11-30 05:41:05,093 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 358.6MB. Free memory is still 309.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-11-30 05:41:05,093 INFO L158 Benchmark]: CACSL2BoogieTranslator took 274.01ms. Allocated memory is still 490.7MB. Free memory was 440.3MB in the beginning and 428.4MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-11-30 05:41:05,093 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.02ms. Allocated memory is still 490.7MB. Free memory was 428.4MB in the beginning and 426.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-30 05:41:05,093 INFO L158 Benchmark]: Boogie Preprocessor took 31.57ms. Allocated memory is still 490.7MB. Free memory was 426.7MB in the beginning and 425.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.0GB. [2023-11-30 05:41:05,094 INFO L158 Benchmark]: RCFGBuilder took 495.87ms. Allocated memory is still 490.7MB. Free memory was 425.0MB in the beginning and 400.5MB in the end (delta: 24.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-11-30 05:41:05,094 INFO L158 Benchmark]: TraceAbstraction took 3375.85ms. Allocated memory is still 490.7MB. Free memory was 399.8MB in the beginning and 239.5MB in the end (delta: 160.3MB). Peak memory consumption was 162.4MB. Max. memory is 16.0GB. [2023-11-30 05:41:05,095 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 358.6MB. Free memory is still 309.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 274.01ms. Allocated memory is still 490.7MB. Free memory was 440.3MB in the beginning and 428.4MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 28.02ms. Allocated memory is still 490.7MB. Free memory was 428.4MB in the beginning and 426.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 31.57ms. Allocated memory is still 490.7MB. Free memory was 426.7MB in the beginning and 425.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 495.87ms. Allocated memory is still 490.7MB. Free memory was 425.0MB in the beginning and 400.5MB in the end (delta: 24.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * TraceAbstraction took 3375.85ms. Allocated memory is still 490.7MB. Free memory was 399.8MB in the beginning and 239.5MB in the end (delta: 160.3MB). Peak memory consumption was 162.4MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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: -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: -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: -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: -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: -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: -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: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 185 locations, 20 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: 3.2s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 180 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 180 mSDsluCounter, 46 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 219 IncrementalHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 44 mSDtfsCounter, 219 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=609occurred in iteration=7, InterpolantAutomatonStates: 21, 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, 1.3s InterpolantComputationTime, 367 NumberOfCodeBlocks, 367 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 360 ConstructedInterpolants, 0 QuantifiedInterpolants, 1991 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 16 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-30 05:41:05,132 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...