/root/.sdkman/candidates/java/current/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --traceabstraction.prune.known.deadend.states.from.previous.iterations false -s ../../../trunk/examples/settings/gemcutter/NewStatesSleep.epf --traceabstraction.cegar.restart.behaviour ONE_CEGAR_PER_ERROR_LOCATION -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_79-equ_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.dynamic-abstractions-e23131f-m [2024-05-03 07:20:22,046 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-03 07:20:22,112 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleep.epf [2024-05-03 07:20:22,116 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-03 07:20:22,117 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-03 07:20:22,140 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-03 07:20:22,141 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-03 07:20:22,141 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-03 07:20:22,141 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-03 07:20:22,142 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-03 07:20:22,142 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-03 07:20:22,142 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-03 07:20:22,142 INFO L153 SettingsManager]: * Use SBE=true [2024-05-03 07:20:22,143 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-03 07:20:22,143 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-03 07:20:22,143 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-03 07:20:22,143 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-03 07:20:22,144 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-03 07:20:22,144 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-03 07:20:22,144 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-03 07:20:22,144 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-03 07:20:22,148 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-03 07:20:22,148 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-03 07:20:22,149 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-03 07:20:22,151 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-03 07:20:22,152 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-03 07:20:22,152 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-03 07:20:22,152 INFO L153 SettingsManager]: * To the following directory=./dump/ [2024-05-03 07:20:22,152 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-03 07:20:22,152 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-05-03 07:20:22,153 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-03 07:20:22,153 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-03 07:20:22,153 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-03 07:20:22,153 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-03 07:20:22,153 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2024-05-03 07:20:22,154 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-03 07:20:22,154 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-03 07:20:22,154 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-05-03 07:20:22,154 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-03 07:20:22,154 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/UGemCutter-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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Prune known deadend states from previous iterations -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: CEGAR restart behaviour -> ONE_CEGAR_PER_ERROR_LOCATION [2024-05-03 07:20:22,363 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-03 07:20:22,392 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-03 07:20:22,394 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-03 07:20:22,395 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-03 07:20:22,397 INFO L274 PluginConnector]: CDTParser initialized [2024-05-03 07:20:22,399 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_79-equ_racefree.i [2024-05-03 07:20:23,480 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-03 07:20:23,665 INFO L384 CDTParser]: Found 1 translation units. [2024-05-03 07:20:23,666 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_79-equ_racefree.i [2024-05-03 07:20:23,679 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/317ad8ccf/f4bac963ea944c6f8988870431723a03/FLAG2811954a2 [2024-05-03 07:20:23,690 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/317ad8ccf/f4bac963ea944c6f8988870431723a03 [2024-05-03 07:20:23,692 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-03 07:20:23,693 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-03 07:20:23,694 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-03 07:20:23,694 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-03 07:20:23,698 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-03 07:20:23,701 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.05 07:20:23" (1/1) ... [2024-05-03 07:20:23,703 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57205fc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 07:20:23, skipping insertion in model container [2024-05-03 07:20:23,703 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.05 07:20:23" (1/1) ... [2024-05-03 07:20:23,741 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-03 07:20:24,061 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_79-equ_racefree.i[47038,47051] [2024-05-03 07:20:24,097 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-05-03 07:20:24,114 INFO L202 MainTranslator]: Completed pre-run [2024-05-03 07:20:24,149 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_79-equ_racefree.i[47038,47051] [2024-05-03 07:20:24,159 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-05-03 07:20:24,208 INFO L206 MainTranslator]: Completed translation [2024-05-03 07:20:24,209 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 07:20:24 WrapperNode [2024-05-03 07:20:24,209 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-03 07:20:24,210 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-03 07:20:24,210 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-03 07:20:24,210 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-03 07:20:24,216 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 07:20:24" (1/1) ... [2024-05-03 07:20:24,244 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 07:20:24" (1/1) ... [2024-05-03 07:20:24,265 INFO L138 Inliner]: procedures = 272, calls = 64, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 226 [2024-05-03 07:20:24,266 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-03 07:20:24,266 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-03 07:20:24,266 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-03 07:20:24,266 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-03 07:20:24,283 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 07:20:24" (1/1) ... [2024-05-03 07:20:24,283 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 07:20:24" (1/1) ... [2024-05-03 07:20:24,294 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 07:20:24" (1/1) ... [2024-05-03 07:20:24,294 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 07:20:24" (1/1) ... [2024-05-03 07:20:24,300 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 07:20:24" (1/1) ... [2024-05-03 07:20:24,303 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 07:20:24" (1/1) ... [2024-05-03 07:20:24,316 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 07:20:24" (1/1) ... [2024-05-03 07:20:24,317 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 07:20:24" (1/1) ... [2024-05-03 07:20:24,319 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-03 07:20:24,320 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-03 07:20:24,320 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-03 07:20:24,320 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-03 07:20:24,321 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 07:20:24" (1/1) ... [2024-05-03 07:20:24,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-05-03 07:20:24,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-05-03 07:20:24,358 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-05-03 07:20:24,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-05-03 07:20:24,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-03 07:20:24,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-03 07:20:24,397 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-05-03 07:20:24,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-05-03 07:20:24,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-05-03 07:20:24,398 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-05-03 07:20:24,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-03 07:20:24,398 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-05-03 07:20:24,398 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-05-03 07:20:24,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-05-03 07:20:24,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-03 07:20:24,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-03 07:20:24,401 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-05-03 07:20:24,522 INFO L241 CfgBuilder]: Building ICFG [2024-05-03 07:20:24,524 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-03 07:20:24,843 INFO L282 CfgBuilder]: Performing block encoding [2024-05-03 07:20:24,883 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-03 07:20:24,883 INFO L309 CfgBuilder]: Removed 22 assume(true) statements. [2024-05-03 07:20:24,884 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.05 07:20:24 BoogieIcfgContainer [2024-05-03 07:20:24,884 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-03 07:20:24,885 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-03 07:20:24,885 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-03 07:20:24,888 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-03 07:20:24,888 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.05 07:20:23" (1/3) ... [2024-05-03 07:20:24,889 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bbfb8cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.05 07:20:24, skipping insertion in model container [2024-05-03 07:20:24,889 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 07:20:24" (2/3) ... [2024-05-03 07:20:24,889 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bbfb8cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.05 07:20:24, skipping insertion in model container [2024-05-03 07:20:24,889 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.05 07:20:24" (3/3) ... [2024-05-03 07:20:24,890 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_79-equ_racefree.i [2024-05-03 07:20:24,901 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-05-03 07:20:24,909 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-03 07:20:24,910 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-05-03 07:20:24,910 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-03 07:20:24,977 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-05-03 07:20:25,018 INFO L103 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-03 07:20:25,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-05-03 07:20:25,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-05-03 07:20:25,022 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-05-03 07:20:25,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2024-05-03 07:20:25,053 INFO L166 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-05-03 07:20:25,059 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION ======== [2024-05-03 07:20:25,064 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=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, 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;@6a873c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-03 07:20:25,064 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-05-03 07:20:25,312 INFO L78 Accepts]: Start accepts. Automaton has currently 934 states, but on-demand construction may add more states Word has length 190 [2024-05-03 07:20:25,313 INFO L84 Accepts]: Finished accepts. word is accepted. [2024-05-03 07:20:25,314 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-05-03 07:20:25,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-03 07:20:25,320 INFO L85 PathProgramCache]: Analyzing trace with hash 358536603, now seen corresponding path program 1 times [2024-05-03 07:20:25,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-03 07:20:25,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003580082] [2024-05-03 07:20:25,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-03 07:20:25,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-03 07:20:25,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-03 07:20:25,777 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-05-03 07:20:25,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-03 07:20:25,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003580082] [2024-05-03 07:20:25,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003580082] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-03 07:20:25,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-03 07:20:25,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-03 07:20:25,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353765051] [2024-05-03 07:20:25,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-03 07:20:25,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-05-03 07:20:25,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-03 07:20:25,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-05-03 07:20:25,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-05-03 07:20:25,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-05-03 07:20:25,817 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-05-03 07:20:25,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 61.0) internal successors, (122), 2 states have internal predecessors, (122), 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) [2024-05-03 07:20:25,818 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-05-03 07:20:26,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-05-03 07:20:26,004 INFO L78 Accepts]: Start accepts. Automaton has currently 1529 states, but on-demand construction may add more states Word has length 78 [2024-05-03 07:20:26,006 INFO L84 Accepts]: Finished accepts. word is accepted. [2024-05-03 07:20:26,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-03 07:20:26,006 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-05-03 07:20:26,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-03 07:20:26,008 INFO L85 PathProgramCache]: Analyzing trace with hash -450141620, now seen corresponding path program 1 times [2024-05-03 07:20:26,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-03 07:20:26,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579663815] [2024-05-03 07:20:26,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-03 07:20:26,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-03 07:20:26,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-03 07:20:26,225 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-03 07:20:26,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-03 07:20:26,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579663815] [2024-05-03 07:20:26,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579663815] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-03 07:20:26,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597726929] [2024-05-03 07:20:26,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-03 07:20:26,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-03 07:20:26,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-05-03 07:20:26,267 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-03 07:20:26,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-05-03 07:20:26,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-03 07:20:26,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 4 conjunts are in the unsatisfiable core [2024-05-03 07:20:26,383 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-03 07:20:26,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-03 07:20:26,455 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-03 07:20:26,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-03 07:20:26,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597726929] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-03 07:20:26,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-03 07:20:26,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-05-03 07:20:26,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176882992] [2024-05-03 07:20:26,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-03 07:20:26,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-03 07:20:26,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-03 07:20:26,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-03 07:20:26,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-05-03 07:20:26,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-05-03 07:20:26,493 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-05-03 07:20:26,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 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) [2024-05-03 07:20:26,493 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-05-03 07:20:26,493 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-05-03 07:20:26,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-05-03 07:20:26,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-03 07:20:26,640 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-05-03 07:20:26,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-05-03 07:20:26,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-05-03 07:20:26,853 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2024-05-03 07:20:26,854 INFO L308 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION was SAFE (1/4) [2024-05-03 07:20:26,858 INFO L103 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-03 07:20:26,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-05-03 07:20:26,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-05-03 07:20:26,862 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-05-03 07:20:26,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (4)] Waiting until timeout for monitored process [2024-05-03 07:20:26,865 INFO L166 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-05-03 07:20:26,865 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2024-05-03 07:20:26,866 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=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, 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;@6a873c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-03 07:20:26,866 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-05-03 07:20:26,869 INFO L78 Accepts]: Start accepts. Automaton has currently 79 states, but on-demand construction may add more states Word has length 67 [2024-05-03 07:20:26,869 INFO L84 Accepts]: Finished accepts. word is accepted. [2024-05-03 07:20:26,870 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-05-03 07:20:26,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-03 07:20:26,870 INFO L85 PathProgramCache]: Analyzing trace with hash -87235226, now seen corresponding path program 1 times [2024-05-03 07:20:26,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-03 07:20:26,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884841561] [2024-05-03 07:20:26,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-03 07:20:26,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-03 07:20:26,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-05-03 07:20:26,911 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-05-03 07:20:26,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-05-03 07:20:26,958 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-05-03 07:20:26,958 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-05-03 07:20:26,959 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2024-05-03 07:20:26,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-03 07:20:26,960 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2024-05-03 07:20:26,960 INFO L308 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was UNSAFE (2/4) [2024-05-03 07:20:26,961 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-05-03 07:20:26,961 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-05-03 07:20:26,996 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-05-03 07:20:27,003 INFO L103 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-03 07:20:27,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-05-03 07:20:27,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-05-03 07:20:27,007 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-05-03 07:20:27,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (5)] Waiting until timeout for monitored process [2024-05-03 07:20:27,012 INFO L166 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-05-03 07:20:27,013 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION ======== [2024-05-03 07:20:27,013 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=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, 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;@6a873c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-03 07:20:27,014 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-05-03 07:20:28,779 INFO L78 Accepts]: Start accepts. Automaton has currently 27832 states, but on-demand construction may add more states Word has length 206 [2024-05-03 07:20:28,781 INFO L84 Accepts]: Finished accepts. word is accepted. [2024-05-03 07:20:28,783 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-05-03 07:20:28,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-03 07:20:28,784 INFO L85 PathProgramCache]: Analyzing trace with hash -886348415, now seen corresponding path program 1 times [2024-05-03 07:20:28,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-03 07:20:28,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095411184] [2024-05-03 07:20:28,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-03 07:20:28,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-03 07:20:28,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-03 07:20:28,883 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2024-05-03 07:20:28,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-03 07:20:28,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095411184] [2024-05-03 07:20:28,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095411184] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-03 07:20:28,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-03 07:20:28,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-03 07:20:28,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830001226] [2024-05-03 07:20:28,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-03 07:20:28,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-05-03 07:20:28,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-03 07:20:28,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-05-03 07:20:28,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-05-03 07:20:28,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-05-03 07:20:28,889 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-05-03 07:20:28,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 65.5) internal successors, (131), 2 states have internal predecessors, (131), 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) [2024-05-03 07:20:28,889 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-05-03 07:20:32,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-05-03 07:20:32,562 INFO L78 Accepts]: Start accepts. Automaton has currently 72965 states, but on-demand construction may add more states Word has length 86 [2024-05-03 07:20:32,563 INFO L84 Accepts]: Finished accepts. word is accepted. [2024-05-03 07:20:32,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-03 07:20:32,563 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-05-03 07:20:32,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-03 07:20:32,564 INFO L85 PathProgramCache]: Analyzing trace with hash 129446507, now seen corresponding path program 1 times [2024-05-03 07:20:32,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-03 07:20:32,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063965855] [2024-05-03 07:20:32,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-03 07:20:32,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-03 07:20:32,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-03 07:20:32,859 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-03 07:20:32,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-03 07:20:32,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063965855] [2024-05-03 07:20:32,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063965855] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-03 07:20:32,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467033703] [2024-05-03 07:20:32,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-03 07:20:32,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-03 07:20:32,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-05-03 07:20:32,876 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-03 07:20:32,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-05-03 07:20:32,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-03 07:20:32,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 6 conjunts are in the unsatisfiable core [2024-05-03 07:20:32,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-03 07:20:33,015 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-03 07:20:33,015 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-03 07:20:33,077 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-03 07:20:33,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467033703] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-03 07:20:33,078 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-03 07:20:33,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-05-03 07:20:33,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104341591] [2024-05-03 07:20:33,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-03 07:20:33,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-05-03 07:20:33,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-03 07:20:33,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-05-03 07:20:33,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-05-03 07:20:33,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-05-03 07:20:33,080 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-05-03 07:20:33,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.0) internal successors, (112), 14 states have internal predecessors, (112), 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) [2024-05-03 07:20:33,080 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-05-03 07:20:33,080 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-05-03 07:20:34,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-05-03 07:20:34,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-03 07:20:34,103 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-05-03 07:20:34,119 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-05-03 07:20:34,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-03 07:20:34,311 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2024-05-03 07:20:34,312 INFO L308 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION was SAFE (1/5) [2024-05-03 07:20:34,315 INFO L103 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-03 07:20:34,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-05-03 07:20:34,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-05-03 07:20:34,316 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-05-03 07:20:34,322 INFO L166 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-05-03 07:20:34,322 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2024-05-03 07:20:34,323 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=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, 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;@6a873c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-03 07:20:34,323 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-05-03 07:20:34,325 INFO L78 Accepts]: Start accepts. Automaton has currently 104 states, but on-demand construction may add more states Word has length 75 [2024-05-03 07:20:34,325 INFO L84 Accepts]: Finished accepts. word is accepted. [2024-05-03 07:20:34,325 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-05-03 07:20:34,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-03 07:20:34,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1394011205, now seen corresponding path program 1 times [2024-05-03 07:20:34,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-03 07:20:34,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732034128] [2024-05-03 07:20:34,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-03 07:20:34,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-03 07:20:34,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (7)] Waiting until timeout for monitored process [2024-05-03 07:20:34,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-05-03 07:20:34,350 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-05-03 07:20:34,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-05-03 07:20:34,377 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-05-03 07:20:34,378 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-05-03 07:20:34,378 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2024-05-03 07:20:34,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-03 07:20:34,380 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2024-05-03 07:20:34,380 INFO L308 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was UNSAFE (2/5) [2024-05-03 07:20:34,380 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-05-03 07:20:34,380 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-05-03 07:20:34,412 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-05-03 07:20:34,414 INFO L103 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-03 07:20:34,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-05-03 07:20:34,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-05-03 07:20:34,417 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-05-03 07:20:34,420 INFO L166 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-05-03 07:20:34,420 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION ======== [2024-05-03 07:20:34,421 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=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, 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;@6a873c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-03 07:20:34,421 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-05-03 07:20:34,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (8)] Waiting until timeout for monitored process [2024-05-03 07:24:05,296 INFO L78 Accepts]: Start accepts. Automaton has currently 1464468 states, but on-demand construction may add more states Word has length 222 [2024-05-03 07:24:05,296 INFO L84 Accepts]: Finished accepts. word is accepted. [2024-05-03 07:24:05,297 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-05-03 07:24:05,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-03 07:24:05,297 INFO L85 PathProgramCache]: Analyzing trace with hash 319094664, now seen corresponding path program 1 times [2024-05-03 07:24:05,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-03 07:24:05,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715127422] [2024-05-03 07:24:05,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-03 07:24:05,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-03 07:24:05,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-03 07:24:05,347 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2024-05-03 07:24:05,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-03 07:24:05,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715127422] [2024-05-03 07:24:05,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715127422] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-03 07:24:05,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-03 07:24:05,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-03 07:24:05,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506899502] [2024-05-03 07:24:05,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-03 07:24:05,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-05-03 07:24:05,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-03 07:24:05,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-05-03 07:24:05,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-05-03 07:24:05,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-05-03 07:24:05,353 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-05-03 07:24:05,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 70.0) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-03 07:24:05,353 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.