/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/array-patterns/array7_pattern.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 17:18:48,730 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 17:18:48,800 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 17:18:48,805 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 17:18:48,805 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 17:18:48,826 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 17:18:48,826 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 17:18:48,826 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 17:18:48,827 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 17:18:48,829 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 17:18:48,830 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 17:18:48,830 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 17:18:48,830 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 17:18:48,831 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 17:18:48,831 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 17:18:48,831 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 17:18:48,831 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 17:18:48,831 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 17:18:48,832 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 17:18:48,832 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 17:18:48,833 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 17:18:48,833 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 17:18:48,833 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 17:18:48,833 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 17:18:48,833 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 17:18:48,833 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 17:18:48,833 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 17:18:48,834 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 17:18:48,834 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 17:18:48,834 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 17:18:48,835 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 17:18:48,835 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 17:18:48,835 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 17:18:48,835 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 17:18:48,835 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 17:18:48,835 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 17:18:48,835 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 17:18:48,836 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 17:18:48,836 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 17:18:48,836 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 17:18:48,836 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 17:18:48,836 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 17:18:48,836 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 17:18:48,837 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 17:18:49,036 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 17:18:49,055 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 17:18:49,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 17:18:49,058 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 17:18:49,058 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 17:18:49,059 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-patterns/array7_pattern.c [2023-12-15 17:18:50,021 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 17:18:50,144 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 17:18:50,144 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array7_pattern.c [2023-12-15 17:18:50,149 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/885b494da/6950c01295254f65b96eb5b95955c3bf/FLAG7ac37adbf [2023-12-15 17:18:50,158 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/885b494da/6950c01295254f65b96eb5b95955c3bf [2023-12-15 17:18:50,160 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 17:18:50,160 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 17:18:50,161 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 17:18:50,161 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 17:18:50,166 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 17:18:50,167 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:18:50" (1/1) ... [2023-12-15 17:18:50,168 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55b4c701 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:18:50, skipping insertion in model container [2023-12-15 17:18:50,168 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:18:50" (1/1) ... [2023-12-15 17:18:50,184 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 17:18:50,313 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array7_pattern.c[1375,1388] [2023-12-15 17:18:50,335 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 17:18:50,341 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 17:18:50,350 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array7_pattern.c[1375,1388] [2023-12-15 17:18:50,360 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 17:18:50,369 INFO L206 MainTranslator]: Completed translation [2023-12-15 17:18:50,370 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:18:50 WrapperNode [2023-12-15 17:18:50,370 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 17:18:50,371 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 17:18:50,371 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 17:18:50,371 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 17:18:50,375 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:18:50" (1/1) ... [2023-12-15 17:18:50,381 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:18:50" (1/1) ... [2023-12-15 17:18:50,394 INFO L138 Inliner]: procedures = 16, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 92 [2023-12-15 17:18:50,395 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 17:18:50,395 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 17:18:50,395 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 17:18:50,395 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 17:18:50,406 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:18:50" (1/1) ... [2023-12-15 17:18:50,406 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:18:50" (1/1) ... [2023-12-15 17:18:50,408 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:18:50" (1/1) ... [2023-12-15 17:18:50,415 INFO L175 MemorySlicer]: Split 12 memory accesses to 3 slices as follows [2, 5, 5]. 42 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 4 writes are split as follows [0, 2, 2]. [2023-12-15 17:18:50,415 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:18:50" (1/1) ... [2023-12-15 17:18:50,416 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:18:50" (1/1) ... [2023-12-15 17:18:50,419 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:18:50" (1/1) ... [2023-12-15 17:18:50,422 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:18:50" (1/1) ... [2023-12-15 17:18:50,422 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:18:50" (1/1) ... [2023-12-15 17:18:50,423 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:18:50" (1/1) ... [2023-12-15 17:18:50,425 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 17:18:50,425 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 17:18:50,425 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 17:18:50,425 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 17:18:50,426 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:18:50" (1/1) ... [2023-12-15 17:18:50,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 17:18:50,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:18:50,459 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 17:18:50,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 17:18:50,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 17:18:50,486 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 17:18:50,487 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 17:18:50,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 17:18:50,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-15 17:18:50,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-15 17:18:50,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-15 17:18:50,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-15 17:18:50,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-15 17:18:50,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-15 17:18:50,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 17:18:50,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 17:18:50,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-15 17:18:50,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-15 17:18:50,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-15 17:18:50,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-15 17:18:50,541 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 17:18:50,542 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 17:18:50,669 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 17:18:50,686 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 17:18:50,686 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-15 17:18:50,686 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:18:50 BoogieIcfgContainer [2023-12-15 17:18:50,686 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 17:18:50,688 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 17:18:50,688 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 17:18:50,690 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 17:18:50,690 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 05:18:50" (1/3) ... [2023-12-15 17:18:50,691 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c2e84a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 05:18:50, skipping insertion in model container [2023-12-15 17:18:50,691 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:18:50" (2/3) ... [2023-12-15 17:18:50,691 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c2e84a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 05:18:50, skipping insertion in model container [2023-12-15 17:18:50,691 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:18:50" (3/3) ... [2023-12-15 17:18:50,692 INFO L112 eAbstractionObserver]: Analyzing ICFG array7_pattern.c [2023-12-15 17:18:50,703 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 17:18:50,703 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 17:18:50,731 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 17:18:50,735 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=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7fe40df2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 17:18:50,736 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 17:18:50,738 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-15 17:18:50,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-15 17:18:50,743 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:18:50,743 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:18:50,744 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:18:50,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:18:50,747 INFO L85 PathProgramCache]: Analyzing trace with hash -7457711, now seen corresponding path program 1 times [2023-12-15 17:18:50,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:18:50,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687077304] [2023-12-15 17:18:50,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:18:50,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:18:50,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:18:50,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 17:18:50,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:18:50,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:18:50,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:18:50,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687077304] [2023-12-15 17:18:50,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687077304] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:18:50,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:18:50,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 17:18:50,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834283414] [2023-12-15 17:18:50,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:18:50,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 17:18:50,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:18:50,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 17:18:50,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 17:18:50,942 INFO L87 Difference]: Start difference. First operand has 21 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-15 17:18:50,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:18:50,967 INFO L93 Difference]: Finished difference Result 40 states and 62 transitions. [2023-12-15 17:18:50,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 17:18:50,969 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2023-12-15 17:18:50,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:18:50,973 INFO L225 Difference]: With dead ends: 40 [2023-12-15 17:18:50,973 INFO L226 Difference]: Without dead ends: 19 [2023-12-15 17:18:50,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 17:18:50,977 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:18:50,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:18:50,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-12-15 17:18:50,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-12-15 17:18:50,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-15 17:18:50,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2023-12-15 17:18:50,999 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 14 [2023-12-15 17:18:50,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:18:50,999 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2023-12-15 17:18:50,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-15 17:18:50,999 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2023-12-15 17:18:51,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-15 17:18:51,000 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:18:51,000 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:18:51,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 17:18:51,001 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:18:51,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:18:51,001 INFO L85 PathProgramCache]: Analyzing trace with hash -856934570, now seen corresponding path program 1 times [2023-12-15 17:18:51,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:18:51,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590460886] [2023-12-15 17:18:51,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:18:51,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:18:51,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:18:51,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 17:18:51,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:18:51,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 17:18:51,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:18:51,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 17:18:51,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:18:51,257 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-15 17:18:51,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:18:51,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590460886] [2023-12-15 17:18:51,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590460886] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:18:51,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:18:51,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 17:18:51,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885454904] [2023-12-15 17:18:51,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:18:51,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 17:18:51,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:18:51,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 17:18:51,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 17:18:51,260 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-15 17:18:51,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:18:51,288 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2023-12-15 17:18:51,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 17:18:51,290 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2023-12-15 17:18:51,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:18:51,291 INFO L225 Difference]: With dead ends: 24 [2023-12-15 17:18:51,291 INFO L226 Difference]: Without dead ends: 20 [2023-12-15 17:18:51,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 17:18:51,293 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 3 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:18:51,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 47 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:18:51,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-12-15 17:18:51,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-12-15 17:18:51,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-15 17:18:51,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2023-12-15 17:18:51,301 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 26 [2023-12-15 17:18:51,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:18:51,302 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2023-12-15 17:18:51,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-15 17:18:51,302 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2023-12-15 17:18:51,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-15 17:18:51,303 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:18:51,303 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:18:51,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 17:18:51,304 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:18:51,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:18:51,304 INFO L85 PathProgramCache]: Analyzing trace with hash -765856431, now seen corresponding path program 1 times [2023-12-15 17:18:51,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:18:51,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729031570] [2023-12-15 17:18:51,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:18:51,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:18:51,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:18:51,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 17:18:51,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:18:51,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 17:18:51,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:18:51,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 17:18:51,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:18:51,412 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-15 17:18:51,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:18:51,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729031570] [2023-12-15 17:18:51,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729031570] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:18:51,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:18:51,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 17:18:51,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480643006] [2023-12-15 17:18:51,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:18:51,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 17:18:51,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:18:51,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 17:18:51,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 17:18:51,414 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-15 17:18:51,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:18:51,442 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2023-12-15 17:18:51,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 17:18:51,443 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2023-12-15 17:18:51,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:18:51,444 INFO L225 Difference]: With dead ends: 37 [2023-12-15 17:18:51,445 INFO L226 Difference]: Without dead ends: 21 [2023-12-15 17:18:51,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 17:18:51,449 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 13 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:18:51,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 53 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:18:51,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-12-15 17:18:51,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-12-15 17:18:51,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-15 17:18:51,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2023-12-15 17:18:51,452 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 27 [2023-12-15 17:18:51,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:18:51,453 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2023-12-15 17:18:51,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-15 17:18:51,453 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2023-12-15 17:18:51,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-15 17:18:51,453 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:18:51,453 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:18:51,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 17:18:51,454 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:18:51,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:18:51,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1693469014, now seen corresponding path program 1 times [2023-12-15 17:18:51,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:18:51,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401090084] [2023-12-15 17:18:51,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:18:51,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:18:51,465 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 17:18:51,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [897410862] [2023-12-15 17:18:51,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:18:51,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:18:51,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:18:51,482 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 17:18:51,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 17:18:51,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:18:51,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-15 17:18:51,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:18:51,687 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-15 17:18:51,687 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 17:18:51,905 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-15 17:18:51,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:18:51,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401090084] [2023-12-15 17:18:51,906 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 17:18:51,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897410862] [2023-12-15 17:18:51,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897410862] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 17:18:51,920 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 17:18:51,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 15 [2023-12-15 17:18:51,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508098632] [2023-12-15 17:18:51,920 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 17:18:51,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-15 17:18:51,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:18:51,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-15 17:18:51,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2023-12-15 17:18:51,924 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 15 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-15 17:18:52,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:18:52,103 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2023-12-15 17:18:52,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-15 17:18:52,104 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 28 [2023-12-15 17:18:52,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:18:52,105 INFO L225 Difference]: With dead ends: 63 [2023-12-15 17:18:52,106 INFO L226 Difference]: Without dead ends: 33 [2023-12-15 17:18:52,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=357, Unknown=0, NotChecked=0, Total=462 [2023-12-15 17:18:52,112 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 23 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 17:18:52,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 116 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 17:18:52,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-12-15 17:18:52,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 23. [2023-12-15 17:18:52,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-15 17:18:52,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2023-12-15 17:18:52,121 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 28 [2023-12-15 17:18:52,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:18:52,121 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2023-12-15 17:18:52,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-15 17:18:52,122 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2023-12-15 17:18:52,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-15 17:18:52,123 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:18:52,123 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:18:52,128 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-15 17:18:52,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:18:52,328 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:18:52,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:18:52,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1532817290, now seen corresponding path program 2 times [2023-12-15 17:18:52,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:18:52,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530574190] [2023-12-15 17:18:52,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:18:52,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:18:52,342 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 17:18:52,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1252855158] [2023-12-15 17:18:52,342 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-15 17:18:52,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:18:52,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:18:52,347 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 17:18:52,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 17:18:52,412 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-15 17:18:52,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-15 17:18:52,413 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 17:18:52,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:18:52,463 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-15 17:18:52,463 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 17:18:52,512 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-15 17:18:52,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:18:52,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530574190] [2023-12-15 17:18:52,513 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 17:18:52,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252855158] [2023-12-15 17:18:52,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252855158] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 17:18:52,513 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 17:18:52,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2023-12-15 17:18:52,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412175201] [2023-12-15 17:18:52,514 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 17:18:52,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-15 17:18:52,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:18:52,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-15 17:18:52,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-15 17:18:52,516 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-15 17:18:52,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:18:52,589 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2023-12-15 17:18:52,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 17:18:52,592 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 30 [2023-12-15 17:18:52,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:18:52,596 INFO L225 Difference]: With dead ends: 33 [2023-12-15 17:18:52,596 INFO L226 Difference]: Without dead ends: 29 [2023-12-15 17:18:52,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2023-12-15 17:18:52,597 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 25 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:18:52,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 87 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:18:52,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-12-15 17:18:52,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-12-15 17:18:52,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-15 17:18:52,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2023-12-15 17:18:52,600 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 30 [2023-12-15 17:18:52,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:18:52,601 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2023-12-15 17:18:52,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-15 17:18:52,601 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2023-12-15 17:18:52,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-15 17:18:52,601 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:18:52,601 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:18:52,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 17:18:52,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:18:52,813 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:18:52,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:18:52,813 INFO L85 PathProgramCache]: Analyzing trace with hash 801599978, now seen corresponding path program 3 times [2023-12-15 17:18:52,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:18:52,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534508303] [2023-12-15 17:18:52,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:18:52,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:18:52,822 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 17:18:52,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1496704148] [2023-12-15 17:18:52,822 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-15 17:18:52,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:18:52,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:18:52,823 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 17:18:52,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 17:18:52,971 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-15 17:18:52,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-15 17:18:52,973 WARN L260 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 77 conjunts are in the unsatisfiable core [2023-12-15 17:18:52,978 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:18:53,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-15 17:18:53,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-15 17:18:53,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-12-15 17:18:53,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-12-15 17:18:53,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 20 [2023-12-15 17:18:53,130 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 17:18:53,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-12-15 17:18:54,171 INFO L349 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2023-12-15 17:18:54,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 259 treesize of output 240 [2023-12-15 17:18:54,382 INFO L349 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2023-12-15 17:18:54,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 269 treesize of output 246 [2023-12-15 17:18:54,532 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-15 17:18:54,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-15 17:18:54,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-15 17:18:54,536 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-15 17:18:54,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-15 17:18:54,538 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 50 [2023-12-15 17:18:54,592 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-15 17:18:54,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-15 17:18:54,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-15 17:18:54,595 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-15 17:18:54,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-15 17:18:54,597 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-15 17:18:54,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 51 [2023-12-15 17:18:54,718 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-15 17:18:54,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-15 17:18:54,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-15 17:18:54,722 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-15 17:18:54,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-15 17:18:54,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 50 [2023-12-15 17:18:54,782 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-15 17:18:54,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-15 17:18:54,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-15 17:18:54,784 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-15 17:18:54,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-15 17:18:54,786 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-15 17:18:54,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 51 [2023-12-15 17:19:02,967 INFO L349 Elim1Store]: treesize reduction 341, result has 43.3 percent of original size [2023-12-15 17:19:02,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 3 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 367 treesize of output 546 [2023-12-15 17:19:04,229 INFO L349 Elim1Store]: treesize reduction 161, result has 60.2 percent of original size [2023-12-15 17:19:04,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 3 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 360 treesize of output 507 Received shutdown request... [2023-12-15 17:20:02,798 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 17:20:02,798 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 17:20:02,830 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 17:20:02,837 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-15 17:20:03,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:20:03,036 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 33 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-14-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-40-2-4-2-3-3-4-3-5-2-5-3-4-3-3-3-2-3-1 context. [2023-12-15 17:20:03,039 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2023-12-15 17:20:03,041 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 17:20:03,042 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 05:20:03 BoogieIcfgContainer [2023-12-15 17:20:03,043 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 17:20:03,043 INFO L158 Benchmark]: Toolchain (without parser) took 72882.60ms. Allocated memory was 252.7MB in the beginning and 759.2MB in the end (delta: 506.5MB). Free memory was 201.0MB in the beginning and 566.6MB in the end (delta: -365.6MB). Peak memory consumption was 447.2MB. Max. memory is 8.0GB. [2023-12-15 17:20:03,043 INFO L158 Benchmark]: CDTParser took 0.50ms. Allocated memory is still 205.5MB. Free memory is still 155.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 17:20:03,043 INFO L158 Benchmark]: CACSL2BoogieTranslator took 208.94ms. Allocated memory is still 252.7MB. Free memory was 200.7MB in the beginning and 189.1MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-15 17:20:03,044 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.28ms. Allocated memory is still 252.7MB. Free memory was 189.1MB in the beginning and 187.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-15 17:20:03,044 INFO L158 Benchmark]: Boogie Preprocessor took 29.40ms. Allocated memory is still 252.7MB. Free memory was 187.3MB in the beginning and 185.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-15 17:20:03,044 INFO L158 Benchmark]: RCFGBuilder took 261.36ms. Allocated memory is still 252.7MB. Free memory was 185.2MB in the beginning and 171.6MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-15 17:20:03,044 INFO L158 Benchmark]: TraceAbstraction took 72354.80ms. Allocated memory was 252.7MB in the beginning and 759.2MB in the end (delta: 506.5MB). Free memory was 170.9MB in the beginning and 566.6MB in the end (delta: -395.7MB). Peak memory consumption was 417.9MB. Max. memory is 8.0GB. [2023-12-15 17:20:03,045 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50ms. Allocated memory is still 205.5MB. Free memory is still 155.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 208.94ms. Allocated memory is still 252.7MB. Free memory was 200.7MB in the beginning and 189.1MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 24.28ms. Allocated memory is still 252.7MB. Free memory was 189.1MB in the beginning and 187.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.40ms. Allocated memory is still 252.7MB. Free memory was 187.3MB in the beginning and 185.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 261.36ms. Allocated memory is still 252.7MB. Free memory was 185.2MB in the beginning and 171.6MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 72354.80ms. Allocated memory was 252.7MB in the beginning and 759.2MB in the end (delta: 506.5MB). Free memory was 170.9MB in the beginning and 566.6MB in the end (delta: -395.7MB). Peak memory consumption was 417.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 34]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 34). Cancelled while NwaCegarLoop was analyzing trace of length 33 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-14-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-40-2-4-2-3-3-4-3-5-2-5-3-4-3-3-3-2-3-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 72.3s, OverallIterations: 6, TraceHistogramMax: 3, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 66 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 64 mSDsluCounter, 324 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 229 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 228 IncrementalHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 95 mSDtfsCounter, 228 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 151 GetRequests, 107 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=5, InterpolantAutomatonStates: 38, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 10 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 125 NumberOfCodeBlocks, 125 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 176 ConstructedInterpolants, 0 QuantifiedInterpolants, 402 SizeOfPredicates, 12 NumberOfNonLiveVariables, 264 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 81/91 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown