/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/DynamicStratifiedAbstractions.epf --traceabstraction.cegar.restart.behaviour ONE_CEGAR_PER_ERROR_LOCATION -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-array-sum-alt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.dynamic-abstractions-a4a1cd3-m [2024-05-30 16:31:42,027 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-30 16:31:42,090 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/gemcutter/DynamicStratifiedAbstractions.epf [2024-05-30 16:31:42,093 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-30 16:31:42,093 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-30 16:31:42,093 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2024-05-30 16:31:42,106 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-30 16:31:42,106 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-30 16:31:42,107 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-30 16:31:42,107 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-30 16:31:42,107 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-30 16:31:42,108 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-30 16:31:42,108 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-30 16:31:42,108 INFO L153 SettingsManager]: * Use SBE=true [2024-05-30 16:31:42,108 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-30 16:31:42,108 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-30 16:31:42,109 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-30 16:31:42,109 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-30 16:31:42,109 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-30 16:31:42,109 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-30 16:31:42,109 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-30 16:31:42,112 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-30 16:31:42,113 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-30 16:31:42,113 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-30 16:31:42,113 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-30 16:31:42,113 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-30 16:31:42,113 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-30 16:31:42,113 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-30 16:31:42,113 INFO L153 SettingsManager]: * To the following directory=./dump/ [2024-05-30 16:31:42,114 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-30 16:31:42,114 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-05-30 16:31:42,114 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-30 16:31:42,114 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-30 16:31:42,114 INFO L153 SettingsManager]: * Abstraction for dynamic stratified reduction=VARIABLES_GLOBAL [2024-05-30 16:31:42,114 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-30 16:31:42,115 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-30 16:31:42,115 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=DYNAMIC_ABSTRACTIONS [2024-05-30 16:31:42,115 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2024-05-30 16:31:42,115 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-30 16:31:42,115 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-05-30 16:31:42,115 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-30 16:31:42,116 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Prune known deadend states from previous iterations -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: CEGAR restart behaviour -> ONE_CEGAR_PER_ERROR_LOCATION [2024-05-30 16:31:42,320 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-30 16:31:42,337 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-30 16:31:42,339 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-30 16:31:42,340 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-30 16:31:42,340 INFO L274 PluginConnector]: CDTParser initialized [2024-05-30 16:31:42,341 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/weaver/popl20-more-array-sum-alt.wvr.c [2024-05-30 16:31:43,383 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-30 16:31:43,548 INFO L384 CDTParser]: Found 1 translation units. [2024-05-30 16:31:43,549 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum-alt.wvr.c [2024-05-30 16:31:43,559 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/4d4b2417b/22b79c088124473ba4a0ea84bedb3246/FLAG881fa5bdd [2024-05-30 16:31:43,576 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/4d4b2417b/22b79c088124473ba4a0ea84bedb3246 [2024-05-30 16:31:43,578 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-30 16:31:43,579 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-30 16:31:43,582 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-30 16:31:43,582 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-30 16:31:43,585 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-30 16:31:43,586 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.05 04:31:43" (1/1) ... [2024-05-30 16:31:43,587 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@329398b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.05 04:31:43, skipping insertion in model container [2024-05-30 16:31:43,587 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.05 04:31:43" (1/1) ... [2024-05-30 16:31:43,614 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-30 16:31:43,743 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum-alt.wvr.c[2761,2774] [2024-05-30 16:31:43,751 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-05-30 16:31:43,758 INFO L202 MainTranslator]: Completed pre-run [2024-05-30 16:31:43,773 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum-alt.wvr.c[2761,2774] [2024-05-30 16:31:43,776 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-05-30 16:31:43,787 INFO L206 MainTranslator]: Completed translation [2024-05-30 16:31:43,787 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.05 04:31:43 WrapperNode [2024-05-30 16:31:43,787 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-30 16:31:43,788 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-30 16:31:43,788 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-30 16:31:43,788 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-30 16:31:43,794 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.05 04:31:43" (1/1) ... [2024-05-30 16:31:43,801 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.05 04:31:43" (1/1) ... [2024-05-30 16:31:43,822 INFO L138 Inliner]: procedures = 25, calls = 51, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 206 [2024-05-30 16:31:43,822 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-30 16:31:43,823 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-30 16:31:43,823 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-30 16:31:43,823 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-30 16:31:43,830 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.05 04:31:43" (1/1) ... [2024-05-30 16:31:43,830 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.05 04:31:43" (1/1) ... [2024-05-30 16:31:43,833 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.05 04:31:43" (1/1) ... [2024-05-30 16:31:43,833 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.05 04:31:43" (1/1) ... [2024-05-30 16:31:43,838 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.05 04:31:43" (1/1) ... [2024-05-30 16:31:43,841 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.05 04:31:43" (1/1) ... [2024-05-30 16:31:43,843 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.05 04:31:43" (1/1) ... [2024-05-30 16:31:43,844 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.05 04:31:43" (1/1) ... [2024-05-30 16:31:43,846 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-30 16:31:43,846 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-30 16:31:43,846 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-30 16:31:43,846 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-30 16:31:43,847 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.05 04:31:43" (1/1) ... [2024-05-30 16:31:43,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-05-30 16:31:43,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-05-30 16:31:43,888 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) [2024-05-30 16:31:43,889 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 [2024-05-30 16:31:43,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-30 16:31:43,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-30 16:31:43,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-05-30 16:31:43,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-05-30 16:31:43,925 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-05-30 16:31:43,925 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-05-30 16:31:43,925 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-05-30 16:31:43,925 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-05-30 16:31:43,925 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-05-30 16:31:43,926 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-05-30 16:31:43,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-05-30 16:31:43,926 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-05-30 16:31:43,926 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-05-30 16:31:43,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-05-30 16:31:43,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-30 16:31:43,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-30 16:31:43,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-30 16:31:43,927 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-05-30 16:31:44,026 INFO L241 CfgBuilder]: Building ICFG [2024-05-30 16:31:44,027 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-30 16:31:44,250 INFO L282 CfgBuilder]: Performing block encoding [2024-05-30 16:31:44,402 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-30 16:31:44,402 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2024-05-30 16:31:44,403 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.05 04:31:44 BoogieIcfgContainer [2024-05-30 16:31:44,403 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-30 16:31:44,405 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-30 16:31:44,405 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-30 16:31:44,407 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-30 16:31:44,408 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.05 04:31:43" (1/3) ... [2024-05-30 16:31:44,408 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@329a00db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.05 04:31:44, skipping insertion in model container [2024-05-30 16:31:44,408 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.05 04:31:43" (2/3) ... [2024-05-30 16:31:44,409 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@329a00db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.05 04:31:44, skipping insertion in model container [2024-05-30 16:31:44,410 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.05 04:31:44" (3/3) ... [2024-05-30 16:31:44,411 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum-alt.wvr.c [2024-05-30 16:31:44,418 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-05-30 16:31:44,425 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-30 16:31:44,425 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-05-30 16:31:44,425 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-30 16:31:44,489 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-05-30 16:31:44,528 INFO L103 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-30 16:31:44,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-05-30 16:31:44,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-05-30 16:31:44,531 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) [2024-05-30 16:31:44,540 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 [2024-05-30 16:31:44,590 INFO L166 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-05-30 16:31:44,597 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION ======== [2024-05-30 16:31:44,603 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=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1555437d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-30 16:31:44,604 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-05-30 16:31:44,611 INFO L199 cStratifiedReduction]: Start building reduction automaton [2024-05-30 16:31:44,757 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:44,757 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:44,757 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:44,783 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:44,783 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:44,783 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:44,825 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:44,825 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:44,826 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:44,916 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:44,916 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:44,916 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:44,936 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:44,936 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:44,936 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:44,962 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:44,963 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:44,963 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:44,984 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:44,984 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:44,984 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:45,025 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:45,025 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:45,025 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:45,096 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:45,096 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:45,096 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:45,117 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:45,118 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:45,118 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:45,125 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:45,125 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:45,125 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:45,175 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:45,175 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:45,175 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:45,199 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:45,200 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:45,200 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:45,226 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:45,227 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:45,227 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:45,245 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:45,245 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:45,246 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:45,254 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:45,254 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:45,254 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:45,284 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:45,285 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:45,285 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:45,292 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:45,292 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:45,292 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:45,304 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:45,304 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:45,304 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:45,312 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:45,313 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:45,313 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:45,329 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:45,329 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:45,329 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:45,362 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:45,363 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:45,363 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:45,370 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:45,370 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:45,370 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:45,372 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:45,373 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:45,374 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:45,380 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:45,380 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:45,380 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:45,389 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:45,389 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:45,389 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:45,401 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:45,401 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:45,401 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:45,409 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:45,409 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:45,409 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:45,418 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:45,418 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:45,419 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:45,439 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:45,440 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:45,440 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:45,446 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:45,447 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:45,447 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:45,459 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:45,459 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:45,459 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:45,469 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:45,470 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:45,470 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:45,481 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:45,482 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:45,482 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:45,513 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:45,514 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:45,514 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:45,521 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:45,522 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:45,522 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:45,527 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:45,528 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:45,528 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:45,539 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:45,540 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:45,540 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:45,547 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:45,548 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:45,548 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:45,560 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:45,561 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:45,561 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:45,573 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:45,573 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:45,574 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:45,582 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:45,583 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:45,583 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:45,637 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:45,638 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:45,638 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:45,644 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:45,645 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:45,645 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:45,654 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:45,655 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:45,655 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:45,661 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:45,661 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:45,661 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:45,672 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:45,672 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:45,672 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:45,701 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:45,702 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:45,702 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:45,707 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:45,708 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:45,708 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:45,711 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:45,711 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:45,711 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:45,716 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:45,717 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:45,717 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:45,725 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:45,725 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:45,726 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:45,765 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:45,766 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:45,766 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:45,793 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:45,793 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:45,793 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:45,817 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:45,817 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:45,817 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:45,897 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:45,897 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:45,897 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:45,955 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:45,956 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:45,956 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:45,987 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:45,987 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:45,987 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:46,020 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:46,020 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:46,020 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:46,056 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:46,057 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:46,057 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:46,121 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:46,121 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:46,121 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:46,161 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:46,161 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:46,161 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:46,174 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:46,174 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:46,174 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:46,201 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:46,201 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:46,201 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:46,225 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:46,225 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:46,225 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:46,230 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:46,231 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:46,231 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:46,235 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:46,235 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:46,235 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:46,239 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:46,240 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:46,240 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:46,251 INFO L211 cStratifiedReduction]: Finished building reduction automaton with 924 states. [2024-05-30 16:31:46,251 INFO L212 cStratifiedReduction]: Copied states 96 times. [2024-05-30 16:31:46,254 INFO L78 Accepts]: Start accepts. Automaton has currently 953 states, but on-demand construction may add more states Word has length 129 [2024-05-30 16:31:46,257 INFO L84 Accepts]: Finished accepts. word is accepted. [2024-05-30 16:31:46,257 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-05-30 16:31:46,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-30 16:31:46,263 INFO L85 PathProgramCache]: Analyzing trace with hash 53306258, now seen corresponding path program 1 times [2024-05-30 16:31:46,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-30 16:31:46,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057715959] [2024-05-30 16:31:46,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-30 16:31:46,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-30 16:31:46,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-30 16:31:46,557 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-05-30 16:31:46,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-30 16:31:46,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057715959] [2024-05-30 16:31:46,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057715959] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-30 16:31:46,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-30 16:31:46,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-30 16:31:46,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976696251] [2024-05-30 16:31:46,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-30 16:31:46,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-05-30 16:31:46,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-30 16:31:46,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-05-30 16:31:46,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-05-30 16:31:46,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-05-30 16:31:46,588 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-05-30 16:31:46,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 61.5) internal successors, (123), 2 states have internal predecessors, (123), 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) [2024-05-30 16:31:46,589 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-05-30 16:31:46,590 INFO L199 cStratifiedReduction]: Start building reduction automaton [2024-05-30 16:31:46,631 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:46,631 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:46,632 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:46,638 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:46,638 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:46,639 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:46,644 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:46,644 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:46,645 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:46,660 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:46,660 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:46,660 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:46,664 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:46,664 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:46,664 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:46,670 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:46,670 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:46,670 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:46,675 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:46,675 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:46,675 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:46,682 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:46,683 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:46,683 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:46,706 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:46,706 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:46,706 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:46,710 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:46,711 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:46,711 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:46,712 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:46,712 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:46,712 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:46,716 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:46,716 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:46,716 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:46,722 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:46,722 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:46,722 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:46,730 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:46,730 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:46,730 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:46,736 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:46,736 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:46,736 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:46,742 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:46,742 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:46,742 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:46,759 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:46,759 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:46,759 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:46,764 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:46,764 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:46,764 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:46,771 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:46,771 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:46,771 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:46,776 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:46,777 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:46,777 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:46,785 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:46,786 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:46,786 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:46,806 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:46,806 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:46,806 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:46,812 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:46,813 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:46,813 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:46,815 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:46,815 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:46,816 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:46,821 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:46,821 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:46,821 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:46,827 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:46,827 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:46,827 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:46,835 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:46,835 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:46,835 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:46,841 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:46,841 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:46,841 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:46,847 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:46,847 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:46,847 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:46,865 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:46,865 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:46,865 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:46,870 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:46,870 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:46,870 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:46,877 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:46,877 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:46,877 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:46,882 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:46,882 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:46,882 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:46,890 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:46,890 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:46,891 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:46,913 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:46,913 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:46,914 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:46,918 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:46,919 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:46,919 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:46,920 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:46,920 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:46,920 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:46,925 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:46,925 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:46,925 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:46,930 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:46,930 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:46,931 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:46,938 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:46,938 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:46,938 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:46,944 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:46,944 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:46,944 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:46,949 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:46,949 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:46,949 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:46,963 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:46,964 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:46,964 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:46,968 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:46,968 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:46,968 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:46,974 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:46,975 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:46,975 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:46,979 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:46,980 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:46,980 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:46,988 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:46,988 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:46,988 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:47,077 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:47,078 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:47,078 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:47,083 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:47,083 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:47,083 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:47,085 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:47,087 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:47,088 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:47,092 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:47,092 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:47,093 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:47,099 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:47,099 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:47,099 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:47,158 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:47,159 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:47,159 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:47,176 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:47,176 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:47,176 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:47,193 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:47,193 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:47,193 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:47,239 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:47,240 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:47,240 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:47,256 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:47,256 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:47,256 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:47,274 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:47,274 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:47,274 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:47,290 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:47,290 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:47,290 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:47,309 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:47,309 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:47,309 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:47,343 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:47,343 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:47,343 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:47,363 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:47,363 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:47,363 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:47,369 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:47,369 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:47,369 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:47,384 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:47,384 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:47,384 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:47,442 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:47,442 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:47,442 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:47,447 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:47,447 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:47,448 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:47,450 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:47,450 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:47,451 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:47,453 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:47,453 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:47,453 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:47,464 INFO L211 cStratifiedReduction]: Finished building reduction automaton with 1003 states. [2024-05-30 16:31:47,464 INFO L212 cStratifiedReduction]: Copied states 91 times. [2024-05-30 16:31:47,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-05-30 16:31:47,465 INFO L78 Accepts]: Start accepts. Automaton has currently 1072 states, but on-demand construction may add more states Word has length 125 [2024-05-30 16:31:47,465 INFO L84 Accepts]: Finished accepts. word is accepted. [2024-05-30 16:31:47,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-30 16:31:47,466 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-05-30 16:31:47,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-30 16:31:47,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1626378678, now seen corresponding path program 1 times [2024-05-30 16:31:47,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-30 16:31:47,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786423917] [2024-05-30 16:31:47,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-30 16:31:47,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-30 16:31:47,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-30 16:31:47,815 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-05-30 16:31:47,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-30 16:31:47,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786423917] [2024-05-30 16:31:47,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786423917] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-30 16:31:47,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-30 16:31:47,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-30 16:31:47,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562759838] [2024-05-30 16:31:47,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-30 16:31:47,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-30 16:31:47,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-30 16:31:47,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-30 16:31:47,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-05-30 16:31:47,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-05-30 16:31:47,820 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-05-30 16:31:47,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 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) [2024-05-30 16:31:47,820 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-05-30 16:31:47,820 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-05-30 16:31:47,821 INFO L199 cStratifiedReduction]: Start building reduction automaton [2024-05-30 16:31:47,970 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:47,970 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:47,970 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:47,975 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:47,975 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:47,975 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:47,981 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:47,981 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:47,981 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:47,995 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:47,995 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:47,995 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:47,999 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:47,999 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:47,999 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,005 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,005 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,005 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,009 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,009 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,009 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,016 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,016 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,016 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,032 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,032 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,032 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,036 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,036 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,036 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,037 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,037 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,037 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,041 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,041 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,041 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,045 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,045 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,045 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,052 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,052 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,052 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,058 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,058 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,058 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,063 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,063 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,063 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,077 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,077 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,077 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,081 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,081 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,081 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,087 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,087 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,087 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,092 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,092 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,092 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,100 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,100 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,100 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,117 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,118 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,118 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,122 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,122 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,122 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,124 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,124 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,124 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,128 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,128 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,128 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,133 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,133 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,133 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,140 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,140 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,140 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,145 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,145 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,145 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,150 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,150 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,150 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,163 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,163 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,163 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,167 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,168 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,168 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,173 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,173 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,173 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,217 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,217 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,217 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,227 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,227 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,227 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,249 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,249 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,249 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,254 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,254 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,255 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,256 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,256 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,256 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,261 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,261 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,261 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,267 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,268 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,268 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,276 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,276 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,276 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,282 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,282 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,282 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,289 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,289 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,289 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,305 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,305 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,305 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,310 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,310 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,311 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,317 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,318 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,318 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,323 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,323 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,323 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,332 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,333 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,333 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,354 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,354 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,354 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,359 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,359 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,360 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,361 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,361 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,361 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,366 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,366 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,366 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,372 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,372 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,372 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,403 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,404 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,404 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,425 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,425 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,425 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,445 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,445 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,445 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,505 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,506 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,506 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,525 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,525 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,526 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,547 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,548 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,548 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,567 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,567 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,567 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,596 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,597 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,597 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,639 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,640 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,640 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,669 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,669 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,669 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,674 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,674 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,674 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,689 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,689 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,689 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,707 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,707 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,707 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,715 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,715 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,715 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,718 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,718 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,718 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,720 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:48,720 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:48,720 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:48,733 INFO L211 cStratifiedReduction]: Finished building reduction automaton with 1011 states. [2024-05-30 16:31:48,733 INFO L212 cStratifiedReduction]: Copied states 91 times. [2024-05-30 16:31:48,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-05-30 16:31:48,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-30 16:31:48,733 INFO L78 Accepts]: Start accepts. Automaton has currently 1080 states, but on-demand construction may add more states Word has length 133 [2024-05-30 16:31:48,737 INFO L84 Accepts]: Finished accepts. word is accepted. [2024-05-30 16:31:48,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-30 16:31:48,737 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-05-30 16:31:48,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-30 16:31:48,737 INFO L85 PathProgramCache]: Analyzing trace with hash -880960989, now seen corresponding path program 1 times [2024-05-30 16:31:48,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-30 16:31:48,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236389283] [2024-05-30 16:31:48,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-30 16:31:48,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-30 16:31:48,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-30 16:31:48,910 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-05-30 16:31:48,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-30 16:31:48,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236389283] [2024-05-30 16:31:48,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236389283] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-30 16:31:48,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030826765] [2024-05-30 16:31:48,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-30 16:31:48,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-30 16:31:48,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-05-30 16:31:48,958 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) [2024-05-30 16:31:48,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-05-30 16:31:49,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-30 16:31:49,098 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 6 conjunts are in the unsatisfiable core [2024-05-30 16:31:49,148 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-30 16:31:49,242 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-05-30 16:31:49,242 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-30 16:31:49,372 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-05-30 16:31:49,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030826765] provided 1 perfect and 1 imperfect interpolant sequences [2024-05-30 16:31:49,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-05-30 16:31:49,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2024-05-30 16:31:49,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126518456] [2024-05-30 16:31:49,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-30 16:31:49,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-30 16:31:49,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-30 16:31:49,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-30 16:31:49,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2024-05-30 16:31:49,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-05-30 16:31:49,375 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-05-30 16:31:49,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-30 16:31:49,375 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-05-30 16:31:49,375 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-05-30 16:31:49,375 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-05-30 16:31:49,375 INFO L199 cStratifiedReduction]: Start building reduction automaton [2024-05-30 16:31:49,449 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:49,449 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:49,449 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:49,452 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:49,452 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:49,452 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:49,455 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:49,455 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:49,455 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:49,463 INFO L211 cStratifiedReduction]: Finished building reduction automaton with 270 states. [2024-05-30 16:31:49,463 INFO L212 cStratifiedReduction]: Copied states 6 times. [2024-05-30 16:31:49,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-05-30 16:31:49,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-30 16:31:49,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-30 16:31:49,464 INFO L78 Accepts]: Start accepts. Automaton has currently 271 states, but on-demand construction may add more states Word has length 139 [2024-05-30 16:31:49,465 INFO L84 Accepts]: Finished accepts. word is accepted. [2024-05-30 16:31:49,472 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-05-30 16:31:49,670 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,SelfDestructingSolverStorable2 [2024-05-30 16:31:49,672 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-05-30 16:31:49,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-30 16:31:49,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1222851581, now seen corresponding path program 1 times [2024-05-30 16:31:49,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-30 16:31:49,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406224716] [2024-05-30 16:31:49,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-30 16:31:49,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-30 16:31:49,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-30 16:31:49,891 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-05-30 16:31:49,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-30 16:31:49,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406224716] [2024-05-30 16:31:49,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406224716] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-30 16:31:49,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513878097] [2024-05-30 16:31:49,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-30 16:31:49,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-30 16:31:49,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-05-30 16:31:49,892 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-30 16:31:49,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-05-30 16:31:50,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-30 16:31:50,004 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 10 conjunts are in the unsatisfiable core [2024-05-30 16:31:50,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-30 16:31:50,154 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-05-30 16:31:50,154 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-30 16:31:50,336 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-05-30 16:31:50,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513878097] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-30 16:31:50,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-30 16:31:50,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2024-05-30 16:31:50,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360267731] [2024-05-30 16:31:50,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-30 16:31:50,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-05-30 16:31:50,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-30 16:31:50,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-05-30 16:31:50,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=489, Unknown=0, NotChecked=0, Total=600 [2024-05-30 16:31:50,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-05-30 16:31:50,338 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-05-30 16:31:50,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 7.36) internal successors, (184), 25 states have internal predecessors, (184), 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) [2024-05-30 16:31:50,338 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-05-30 16:31:50,338 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-05-30 16:31:50,338 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-05-30 16:31:50,339 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-05-30 16:31:50,339 INFO L199 cStratifiedReduction]: Start building reduction automaton [2024-05-30 16:31:50,559 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:50,559 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:50,559 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:50,563 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:50,563 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:50,563 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:50,567 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:50,567 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:50,567 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:50,582 INFO L211 cStratifiedReduction]: Finished building reduction automaton with 279 states. [2024-05-30 16:31:50,582 INFO L212 cStratifiedReduction]: Copied states 6 times. [2024-05-30 16:31:50,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-05-30 16:31:50,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-30 16:31:50,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-30 16:31:50,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-05-30 16:31:50,583 INFO L78 Accepts]: Start accepts. Automaton has currently 280 states, but on-demand construction may add more states Word has length 147 [2024-05-30 16:31:50,583 INFO L84 Accepts]: Finished accepts. word is accepted. [2024-05-30 16:31:50,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-05-30 16:31:50,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-30 16:31:50,789 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-05-30 16:31:50,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-30 16:31:50,789 INFO L85 PathProgramCache]: Analyzing trace with hash -697400918, now seen corresponding path program 2 times [2024-05-30 16:31:50,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-30 16:31:50,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324705553] [2024-05-30 16:31:50,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-30 16:31:50,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-30 16:31:50,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-30 16:31:50,987 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-05-30 16:31:50,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-30 16:31:50,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324705553] [2024-05-30 16:31:50,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324705553] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-30 16:31:50,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945754939] [2024-05-30 16:31:50,988 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-05-30 16:31:50,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-30 16:31:50,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-05-30 16:31:50,989 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-30 16:31:51,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-05-30 16:31:51,115 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-05-30 16:31:51,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-05-30 16:31:51,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 8 conjunts are in the unsatisfiable core [2024-05-30 16:31:51,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-30 16:31:51,198 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-05-30 16:31:51,199 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-30 16:31:51,268 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-05-30 16:31:51,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945754939] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-30 16:31:51,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-30 16:31:51,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 21 [2024-05-30 16:31:51,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779990045] [2024-05-30 16:31:51,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-30 16:31:51,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-05-30 16:31:51,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-30 16:31:51,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-05-30 16:31:51,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2024-05-30 16:31:51,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-05-30 16:31:51,271 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-05-30 16:31:51,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 10.761904761904763) internal successors, (226), 21 states have internal predecessors, (226), 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) [2024-05-30 16:31:51,271 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-05-30 16:31:51,271 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-05-30 16:31:51,271 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-05-30 16:31:51,271 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2024-05-30 16:31:51,271 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-05-30 16:31:51,271 INFO L199 cStratifiedReduction]: Start building reduction automaton [2024-05-30 16:31:51,609 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:51,610 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:51,610 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:51,616 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:51,616 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:51,616 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:51,622 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:51,623 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:51,623 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:51,637 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:51,637 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:51,637 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:51,691 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:51,691 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:51,691 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:51,697 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:51,697 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:51,697 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:51,705 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:51,705 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:51,705 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:51,719 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:51,719 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:51,719 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:51,745 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:51,745 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:51,745 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:51,749 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:51,749 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:51,749 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:51,751 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:51,751 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:51,751 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:51,754 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:51,754 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:51,754 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:51,761 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:51,762 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:51,762 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:51,773 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:51,773 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:51,774 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:51,778 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:51,778 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:51,778 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:51,782 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:51,782 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:51,782 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:51,794 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:51,794 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:51,794 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:51,798 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:51,798 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:51,798 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:51,803 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:51,803 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:51,803 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:51,807 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:51,807 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:51,807 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:51,813 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:51,813 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:51,814 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:51,829 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:51,829 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:51,829 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:51,832 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:51,832 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:51,833 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:51,834 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:51,834 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:51,834 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:51,837 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:51,837 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:51,837 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:51,841 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:51,841 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:51,841 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:51,847 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:51,847 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:51,847 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:51,852 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:51,852 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:51,852 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:51,856 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:51,856 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:51,856 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:51,867 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:51,867 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:51,867 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:51,871 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:51,871 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:51,871 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:51,875 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:51,876 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:51,876 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:51,879 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:51,879 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:51,879 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:51,886 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:51,886 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:51,886 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:51,901 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:51,901 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:51,902 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:51,905 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:51,905 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:51,905 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:51,906 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:51,906 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:51,907 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:51,910 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:51,910 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:51,910 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:51,914 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:51,914 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:51,914 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:51,947 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:51,947 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:51,948 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:51,963 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:51,964 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:51,964 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:51,979 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:51,979 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:51,979 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:52,021 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:52,022 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:52,022 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:52,036 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:52,036 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:52,037 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:52,052 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:52,053 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:52,053 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:52,068 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:52,068 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:52,068 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:52,085 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:52,085 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:52,085 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:52,117 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:52,117 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:52,117 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:52,135 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:52,135 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:52,135 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:52,140 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:52,140 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:52,140 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:52,153 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:52,154 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:52,154 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:52,169 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:52,169 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:52,169 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:52,236 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:52,236 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:52,236 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:52,239 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:52,239 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:52,239 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:52,242 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:52,242 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:52,242 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:52,264 INFO L211 cStratifiedReduction]: Finished building reduction automaton with 906 states. [2024-05-30 16:31:52,264 INFO L212 cStratifiedReduction]: Copied states 74 times. [2024-05-30 16:31:52,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-05-30 16:31:52,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-30 16:31:52,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-30 16:31:52,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-05-30 16:31:52,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-05-30 16:31:52,265 INFO L78 Accepts]: Start accepts. Automaton has currently 989 states, but on-demand construction may add more states Word has length 153 [2024-05-30 16:31:52,266 INFO L84 Accepts]: Finished accepts. word is accepted. [2024-05-30 16:31:52,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-05-30 16:31:52,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-30 16:31:52,471 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-05-30 16:31:52,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-30 16:31:52,472 INFO L85 PathProgramCache]: Analyzing trace with hash 78914116, now seen corresponding path program 3 times [2024-05-30 16:31:52,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-30 16:31:52,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480689711] [2024-05-30 16:31:52,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-30 16:31:52,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-30 16:31:52,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-30 16:31:52,701 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 8 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-05-30 16:31:52,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-30 16:31:52,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480689711] [2024-05-30 16:31:52,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480689711] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-30 16:31:52,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340508822] [2024-05-30 16:31:52,702 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-05-30 16:31:52,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-30 16:31:52,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-05-30 16:31:52,718 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) [2024-05-30 16:31:52,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-05-30 16:31:52,929 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-05-30 16:31:52,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-05-30 16:31:52,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 12 conjunts are in the unsatisfiable core [2024-05-30 16:31:52,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-30 16:31:53,084 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-05-30 16:31:53,084 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-30 16:31:53,222 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-05-30 16:31:53,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340508822] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-30 16:31:53,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-30 16:31:53,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 29 [2024-05-30 16:31:53,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367522709] [2024-05-30 16:31:53,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-30 16:31:53,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-05-30 16:31:53,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-30 16:31:53,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-05-30 16:31:53,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=722, Unknown=0, NotChecked=0, Total=812 [2024-05-30 16:31:53,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-05-30 16:31:53,225 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-05-30 16:31:53,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 8.344827586206897) internal successors, (242), 29 states have internal predecessors, (242), 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) [2024-05-30 16:31:53,225 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-05-30 16:31:53,225 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-05-30 16:31:53,225 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-05-30 16:31:53,225 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2024-05-30 16:31:53,225 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2024-05-30 16:31:53,225 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-05-30 16:31:53,225 INFO L199 cStratifiedReduction]: Start building reduction automaton [2024-05-30 16:31:53,637 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:53,637 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:53,637 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:53,644 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:53,644 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:53,644 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:53,655 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:53,655 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:53,655 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:53,671 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:53,671 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:53,671 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:53,675 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:53,675 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:53,675 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:53,680 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:53,680 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:53,680 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:53,697 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:53,697 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:53,697 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:53,712 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:53,713 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:53,713 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:53,733 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:53,733 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:53,733 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:53,737 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:53,737 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:53,737 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:53,739 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:53,739 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:53,739 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:53,747 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:53,747 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:53,747 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:53,753 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:53,754 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:53,754 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:53,761 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:53,761 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:53,761 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:53,766 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:53,766 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:53,766 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:53,770 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:53,770 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:53,770 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:53,782 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:53,782 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:53,783 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:53,786 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:53,786 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:53,786 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:53,791 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:53,791 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:53,791 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:53,801 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:53,802 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:53,802 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:53,808 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:53,808 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:53,808 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:53,823 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:53,824 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:53,824 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:53,827 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:53,827 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:53,827 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:53,829 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:53,829 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:53,829 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:53,832 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:53,832 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:53,832 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:53,838 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:53,838 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:53,838 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:53,845 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:53,845 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:53,845 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:53,850 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:53,850 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:53,850 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:53,854 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:53,854 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:53,854 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:53,866 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:53,866 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:53,866 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:53,870 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:53,870 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:53,870 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:53,875 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:53,875 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:53,875 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:53,879 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:53,879 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:53,879 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:53,885 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:53,885 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:53,885 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:53,950 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:53,951 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:53,951 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:53,955 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:53,955 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:53,955 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:53,959 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:53,959 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:53,959 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:53,963 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:53,963 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:53,963 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:53,968 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:53,968 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:53,968 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:54,004 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:54,004 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:54,004 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:54,023 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:54,024 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:54,024 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:54,043 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:54,043 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:54,043 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:54,103 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:54,103 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:54,103 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:54,123 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:54,123 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:54,123 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:54,143 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:54,143 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:54,143 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:54,163 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:54,163 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:54,163 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:54,186 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:54,186 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:54,186 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:54,226 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:54,227 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:54,227 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:54,249 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:54,249 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:54,249 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:54,256 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:54,257 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:54,257 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:54,274 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:54,274 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:54,275 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:54,295 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:54,295 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:54,295 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:54,305 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:54,306 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:54,306 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:54,309 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:54,309 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:54,309 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:54,312 INFO L393 cStratifiedReduction]: Backtracking a loop entry edge [2024-05-30 16:31:54,312 INFO L394 cStratifiedReduction]: Guessed abstraction level: [] [2024-05-30 16:31:54,313 INFO L395 cStratifiedReduction]: Actual level: [] [2024-05-30 16:31:54,332 INFO L211 cStratifiedReduction]: Finished building reduction automaton with 934 states. [2024-05-30 16:31:54,332 INFO L212 cStratifiedReduction]: Copied states 74 times. [2024-05-30 16:31:54,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-05-30 16:31:54,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-30 16:31:54,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-30 16:31:54,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-05-30 16:31:54,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-05-30 16:31:54,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-05-30 16:31:54,333 INFO L78 Accepts]: Start accepts. Automaton has currently 1026 states, but on-demand construction may add more states Word has length 167 [2024-05-30 16:31:54,333 INFO L84 Accepts]: Finished accepts. word is accepted. [2024-05-30 16:31:54,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-05-30 16:31:54,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-05-30 16:31:54,544 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-05-30 16:31:54,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-30 16:31:54,545 INFO L85 PathProgramCache]: Analyzing trace with hash 2052461707, now seen corresponding path program 4 times [2024-05-30 16:31:54,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-30 16:31:54,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976023030] [2024-05-30 16:31:54,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-30 16:31:54,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-30 16:31:54,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-05-30 16:31:54,611 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-05-30 16:31:54,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-05-30 16:31:54,736 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-05-30 16:31:54,736 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-05-30 16:31:54,737 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-05-30 16:31:54,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-05-30 16:31:54,749 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1] [2024-05-30 16:31:54,750 INFO L308 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION was UNSAFE (1/4) [2024-05-30 16:31:54,753 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-05-30 16:31:54,753 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-05-30 16:31:54,817 WARN L1574 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2024-05-30 16:31:54,820 WARN L1574 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2024-05-30 16:31:54,822 WARN L1574 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2024-05-30 16:31:54,822 WARN L1574 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2024-05-30 16:31:54,832 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.05 04:31:54 BasicIcfg [2024-05-30 16:31:54,832 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-05-30 16:31:54,832 INFO L158 Benchmark]: Toolchain (without parser) took 11252.80ms. Allocated memory was 289.4MB in the beginning and 1.1GB in the end (delta: 822.1MB). Free memory was 218.8MB in the beginning and 714.5MB in the end (delta: -495.7MB). Peak memory consumption was 327.7MB. Max. memory is 8.0GB. [2024-05-30 16:31:54,832 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 289.4MB. Free memory was 256.0MB in the beginning and 255.8MB in the end (delta: 216.7kB). There was no memory consumed. Max. memory is 8.0GB. [2024-05-30 16:31:54,832 INFO L158 Benchmark]: CACSL2BoogieTranslator took 205.90ms. Allocated memory is still 289.4MB. Free memory was 218.5MB in the beginning and 206.4MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2024-05-30 16:31:54,833 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.34ms. Allocated memory is still 289.4MB. Free memory was 206.2MB in the beginning and 204.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2024-05-30 16:31:54,833 INFO L158 Benchmark]: Boogie Preprocessor took 22.82ms. Allocated memory is still 289.4MB. Free memory was 204.1MB in the beginning and 202.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2024-05-30 16:31:54,833 INFO L158 Benchmark]: RCFGBuilder took 557.04ms. Allocated memory is still 289.4MB. Free memory was 202.3MB in the beginning and 229.0MB in the end (delta: -26.7MB). Peak memory consumption was 17.3MB. Max. memory is 8.0GB. [2024-05-30 16:31:54,833 INFO L158 Benchmark]: TraceAbstraction took 10426.81ms. Allocated memory was 289.4MB in the beginning and 1.1GB in the end (delta: 822.1MB). Free memory was 227.9MB in the beginning and 714.5MB in the end (delta: -486.6MB). Peak memory consumption was 335.5MB. Max. memory is 8.0GB. [2024-05-30 16:31:54,834 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 289.4MB. Free memory was 256.0MB in the beginning and 255.8MB in the end (delta: 216.7kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 205.90ms. Allocated memory is still 289.4MB. Free memory was 218.5MB in the beginning and 206.4MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 34.34ms. Allocated memory is still 289.4MB. Free memory was 206.2MB in the beginning and 204.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 22.82ms. Allocated memory is still 289.4MB. Free memory was 204.1MB in the beginning and 202.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 557.04ms. Allocated memory is still 289.4MB. Free memory was 202.3MB in the beginning and 229.0MB in the end (delta: -26.7MB). Peak memory consumption was 17.3MB. Max. memory is 8.0GB. * TraceAbstraction took 10426.81ms. Allocated memory was 289.4MB in the beginning and 1.1GB in the end (delta: 822.1MB). Free memory was 227.9MB in the beginning and 714.5MB in the end (delta: -486.6MB). Peak memory consumption was 335.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation #1 benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 8400, independent: 7776, independent conditional: 7776, independent unconditional: 0, dependent: 624, dependent conditional: 624, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 7859, independent: 7776, independent conditional: 7776, independent unconditional: 0, dependent: 83, dependent conditional: 83, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 7859, independent: 7776, independent conditional: 7776, independent unconditional: 0, dependent: 83, dependent conditional: 83, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 8078, independent: 7776, independent conditional: 0, independent unconditional: 7776, dependent: 302, dependent conditional: 219, dependent unconditional: 83, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 8078, independent: 7776, independent conditional: 0, independent unconditional: 7776, dependent: 302, dependent conditional: 0, dependent unconditional: 302, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 8078, independent: 7776, independent conditional: 0, independent unconditional: 7776, dependent: 302, dependent conditional: 0, dependent unconditional: 302, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 7859, independent: 7776, independent conditional: 0, independent unconditional: 7776, dependent: 83, dependent conditional: 0, dependent unconditional: 83, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 7859, independent: 7776, independent conditional: 0, independent unconditional: 7776, dependent: 83, dependent conditional: 0, dependent unconditional: 83, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 83, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 83, dependent conditional: 0, dependent unconditional: 83, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 83, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 83, dependent conditional: 0, dependent unconditional: 83, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 83, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 83, dependent conditional: 0, dependent unconditional: 83, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 149, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 149, dependent conditional: 0, dependent unconditional: 149, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Protected Queries: 0 ], Cache Queries: [ total: 8078, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 219, dependent conditional: 0, dependent unconditional: 219, unknown: 7859, unknown conditional: 0, unknown unconditional: 7859] , Statistics on independence cache: Total cache size (in pairs): 7859, Positive cache size: 7776, Positive conditional cache size: 0, Positive unconditional cache size: 7776, Negative cache size: 83, Negative conditional cache size: 0, Negative unconditional cache size: 83, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 219, Maximal queried relation: 6, Independence queries for same thread: 541 - StatisticsResult: Reduction benchmarks 26.9ms Time before loop, 1613.3ms Time in loop, 1.6s Time in total, Has Loop: 1, wrong guesses: 0, overall guesses: 74, Reduction States: 924, Duplicate States: 96, Protected Variables: 0 - StatisticsResult: Reduction benchmarks 11.1ms Time before loop, 862.8ms Time in loop, 0.9s Time in total, Has Loop: 1, wrong guesses: 0, overall guesses: 74, Reduction States: 1003, Duplicate States: 91, Protected Variables: 0 - StatisticsResult: Reduction benchmarks 79.0ms Time before loop, 832.9ms Time in loop, 0.9s Time in total, Has Loop: 1, wrong guesses: 0, overall guesses: 74, Reduction States: 1011, Duplicate States: 91, Protected Variables: 0 - StatisticsResult: Reduction benchmarks 45.8ms Time before loop, 42.0ms Time in loop, 0.1s Time in total, Has Loop: 1, wrong guesses: 0, overall guesses: 9, Reduction States: 270, Duplicate States: 6, Protected Variables: 0 - StatisticsResult: Reduction benchmarks 154.5ms Time before loop, 88.7ms Time in loop, 0.2s Time in total, Has Loop: 1, wrong guesses: 0, overall guesses: 9, Reduction States: 279, Duplicate States: 6, Protected Variables: 0 - StatisticsResult: Reduction benchmarks 164.0ms Time before loop, 828.7ms Time in loop, 1.0s Time in total, Has Loop: 1, wrong guesses: 0, overall guesses: 61, Reduction States: 906, Duplicate States: 74, Protected Variables: 0 - StatisticsResult: Reduction benchmarks 239.2ms Time before loop, 867.0ms Time in loop, 1.1s Time in total, Has Loop: 1, wrong guesses: 0, overall guesses: 61, Reduction States: 934, Duplicate States: 74, Protected Variables: 0 - StatisticsResult: Visitor Statistics States: 867, Transitions: 1113, Traversal time: 1.6s - StatisticsResult: Visitor Statistics States: 862, Transitions: 1107, Traversal time: 0.9s - StatisticsResult: Visitor Statistics States: 869, Transitions: 1114, Traversal time: 0.9s - StatisticsResult: Visitor Statistics States: 185, Transitions: 200, Traversal time: 0.1s - StatisticsResult: Visitor Statistics States: 193, Transitions: 208, Traversal time: 0.2s - StatisticsResult: Visitor Statistics States: 751, Transitions: 950, Traversal time: 1.0s - StatisticsResult: Visitor Statistics States: 765, Transitions: 964, Traversal time: 1.1s - StatisticsResult: Proof manager benchmarks IrresponsibleProofs: 15, RedundantProofs: 5, ProvenStates: 294, Times there's more than one choice: 217, Avg number of choices: 3.3095238095238093 - CounterExampleResult [Line: 104]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L40] 0 int* A; VAL [A={0:0}] [L41] 0 int res1, res2, M, N; VAL [A={0:0}, M=0, N=0, res1=0, res2=0] [L86] 0 pthread_t t1, t2, t3; VAL [A={0:0}, M=0, N=0, res1=0, res2=0, t1={6:0}, t2={7:0}, t3={5:0}] [L89] 0 M = __VERIFIER_nondet_int() VAL [A={0:0}, M=2, N=0, res1=0, res2=0, t1={6:0}, t2={7:0}, t3={5:0}] [L90] 0 N = __VERIFIER_nondet_int() VAL [A={0:0}, M=2, N=3, res1=0, res2=0, t1={6:0}, t2={7:0}, t3={5:0}] [L91] CALL, EXPR 0 create_fresh_int_array(N) [L110] CALL 0 assume_abort_if_not(size >= 0) [L37] COND FALSE 0 !(!cond) VAL [A={0:0}, M=2, N=3, \old(cond)=1, cond=1, res1=0, res2=0] [L110] RET 0 assume_abort_if_not(size >= 0) [L111] CALL 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L37] COND FALSE 0 !(!cond) VAL [A={0:0}, M=2, N=3, \old(cond)=1, cond=1, res1=0, res2=0] [L111] RET 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L113] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); VAL [A={0:0}, M=2, N=3, \old(size)=3, arr={3:0}, res1=0, res2=0, size=3] [L114] 0 int i = 0; VAL [A={0:0}, M=2, N=3, \old(size)=3, arr={3:0}, i=0, res1=0, res2=0, size=3] [L114] COND TRUE 0 i < size VAL [A={0:0}, M=2, N=3, \old(size)=3, arr={3:0}, i=0, res1=0, res2=0, size=3] [L115] 0 arr[i] = __VERIFIER_nondet_int() VAL [A={0:0}, M=2, N=3, \old(size)=3, arr={3:0}, i=0, res1=0, res2=0, size=3] [L114] 0 i++ VAL [A={0:0}, M=2, N=3, \old(size)=3, arr={3:0}, i=1, res1=0, res2=0, size=3] [L114] COND TRUE 0 i < size VAL [A={0:0}, M=2, N=3, \old(size)=3, arr={3:0}, i=1, res1=0, res2=0, size=3] [L115] 0 arr[i] = __VERIFIER_nondet_int() VAL [A={0:0}, M=2, N=3, \old(size)=3, arr={3:0}, i=1, res1=0, res2=0, size=3] [L114] 0 i++ VAL [A={0:0}, M=2, N=3, \old(size)=3, arr={3:0}, i=2, res1=0, res2=0, size=3] [L114] COND TRUE 0 i < size VAL [A={0:0}, M=2, N=3, \old(size)=3, arr={3:0}, i=2, res1=0, res2=0, size=3] [L115] 0 arr[i] = __VERIFIER_nondet_int() VAL [A={0:0}, M=2, N=3, \old(size)=3, arr={3:0}, i=2, res1=0, res2=0, size=3] [L114] 0 i++ VAL [A={0:0}, M=2, N=3, \old(size)=3, arr={3:0}, i=3, res1=0, res2=0, size=3] [L114] COND FALSE 0 !(i < size) VAL [A={0:0}, M=2, N=3, \old(size)=3, arr={3:0}, i=3, res1=0, res2=0, size=3] [L117] 0 return arr; VAL [A={0:0}, M=2, N=3, \old(size)=3, \result={3:0}, arr={3:0}, res1=0, res2=0, size=3] [L91] RET, EXPR 0 create_fresh_int_array(N) [L91] 0 A = create_fresh_int_array(N) VAL [A={3:0}, M=2, N=3, res1=0, res2=0, t1={6:0}, t2={7:0}, t3={5:0}] [L93] CALL 0 assume_abort_if_not(M >= 0 && M <= N) [L37] COND FALSE 0 !(!cond) VAL [A={3:0}, M=2, N=3, \old(cond)=1, cond=1, res1=0, res2=0] [L93] RET 0 assume_abort_if_not(M >= 0 && M <= N) [L96] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [A={3:0}, M=2, N=3, res1=0, res2=0, t1={6:0}, t2={7:0}, t3={5:0}] [L97] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [A={3:0}, M=2, N=3, res1=0, res2=0, t1={6:0}, t2={7:0}, t3={5:0}] [L98] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) VAL [A={3:0}, M=2, N=3, res1=0, res2=0, t1={6:0}, t2={7:0}, t3={5:0}] [L99] 0 \read(t1) VAL [A={3:0}, M=2, N=3, res1=0, res2=0, t1={6:0}, t2={7:0}, t3={5:0}] [L47] 1 int i=0; VAL [A={3:0}, M=2, N=3, i=0, res1=0, res2=0] [L47] COND TRUE 1 i= 0 || a >= -2147483648 - b) [L37] COND FALSE 1 !(!cond) [L121] RET 1 assume_abort_if_not(b >= 0 || a >= -2147483648 - b) [L122] CALL 1 assume_abort_if_not(b <= 0 || a <= 2147483647 - b) [L37] COND FALSE 1 !(!cond) [L122] RET 1 assume_abort_if_not(b <= 0 || a <= 2147483647 - b) [L123] 1 return a + b; [L49] RET, EXPR 1 plus(res1, A[i]) [L49] 1 int tmp = plus(res1, A[i]); [L52] 1 res1 = tmp VAL [A={3:0}, M=2, N=3, i=0, res1=9, res2=0, tmp=9] [L47] 1 i++ VAL [A={3:0}, M=2, N=3, i=1, res1=9, res2=0, tmp=9] [L47] COND TRUE 1 i= 0 || a >= -2147483648 - b) [L37] COND FALSE 1 !(!cond) [L121] RET 1 assume_abort_if_not(b >= 0 || a >= -2147483648 - b) [L122] CALL 1 assume_abort_if_not(b <= 0 || a <= 2147483647 - b) [L37] COND FALSE 1 !(!cond) [L122] RET 1 assume_abort_if_not(b <= 0 || a <= 2147483647 - b) [L123] 1 return a + b; [L49] RET, EXPR 1 plus(res1, A[i]) [L49] 1 int tmp = plus(res1, A[i]); [L52] 1 res1 = tmp VAL [A={3:0}, M=2, N=3, i=1, res1=1, res2=0, tmp=1] [L47] 1 i++ VAL [A={3:0}, M=2, N=3, i=2, res1=1, res2=0, tmp=1] [L47] COND TRUE 1 i= 0 || a >= -2147483648 - b) [L37] COND FALSE 1 !(!cond) [L121] RET 1 assume_abort_if_not(b >= 0 || a >= -2147483648 - b) [L122] CALL 1 assume_abort_if_not(b <= 0 || a <= 2147483647 - b) [L37] COND FALSE 1 !(!cond) [L122] RET 1 assume_abort_if_not(b <= 0 || a <= 2147483647 - b) [L123] 1 return a + b; [L49] RET, EXPR 1 plus(res1, A[i]) [L49] 1 int tmp = plus(res1, A[i]); [L52] 1 res1 = tmp VAL [A={3:0}, M=2, N=3, i=2, res1=1, res2=0, tmp=1] [L47] 1 i++ VAL [A={3:0}, M=2, N=3, i=3, res1=1, res2=0, tmp=1] [L47] COND FALSE 1 !(i= 0 || a >= -2147483648 - b) [L37] COND FALSE 2 !(!cond) [L121] RET 2 assume_abort_if_not(b >= 0 || a >= -2147483648 - b) [L122] CALL 2 assume_abort_if_not(b <= 0 || a <= 2147483647 - b) [L37] COND FALSE 2 !(!cond) [L122] RET 2 assume_abort_if_not(b <= 0 || a <= 2147483647 - b) [L123] 2 return a + b; [L62] RET, EXPR 2 plus(res2, A[i]) [L62] 2 int tmp = plus(res2, A[i]); [L73] 3 int i=M; VAL [A={3:0}, M=2, N=3, i=2, res1=1, res2=0] [L73] COND TRUE 3 i= 0 || a >= -2147483648 - b) [L37] COND FALSE 3 !(!cond) [L121] RET 3 assume_abort_if_not(b >= 0 || a >= -2147483648 - b) [L122] CALL 3 assume_abort_if_not(b <= 0 || a <= 2147483647 - b) [L37] COND FALSE 3 !(!cond) [L122] RET 3 assume_abort_if_not(b <= 0 || a <= 2147483647 - b) [L123] 3 return a + b; [L75] RET, EXPR 3 plus(res2, A[i]) [L75] 3 int tmp = plus(res2, A[i]); [L65] 2 res2 = tmp VAL [A={3:0}, M=2, N=3, i=0, res1=1, res2=9, tmp=9] [L60] 2 i++ VAL [A={3:0}, M=2, N=3, i=1, res1=1, res2=9, tmp=9] [L60] COND TRUE 2 i= 0 || a >= -2147483648 - b) [L37] COND FALSE 2 !(!cond) [L121] RET 2 assume_abort_if_not(b >= 0 || a >= -2147483648 - b) [L122] CALL 2 assume_abort_if_not(b <= 0 || a <= 2147483647 - b) [L37] COND FALSE 2 !(!cond) [L122] RET 2 assume_abort_if_not(b <= 0 || a <= 2147483647 - b) [L123] 2 return a + b; [L62] RET, EXPR 2 plus(res2, A[i]) [L62] 2 int tmp = plus(res2, A[i]); [L65] 2 res2 = tmp VAL [A={3:0}, M=2, N=3, i=1, res1=1, res2=-8, tmp=-8] [L60] 2 i++ VAL [A={3:0}, M=2, N=3, i=2, res1=1, res2=-8, tmp=-8] [L60] COND FALSE 2 !(i