/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 [2023-12-18 20:25:04,828 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-18 20:25:04,894 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-18 20:25:04,899 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-18 20:25:04,899 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-18 20:25:04,922 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-18 20:25:04,923 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-18 20:25:04,923 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-18 20:25:04,924 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-18 20:25:04,926 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-18 20:25:04,926 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-18 20:25:04,927 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-18 20:25:04,927 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-18 20:25:04,928 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-18 20:25:04,928 INFO L153 SettingsManager]: * Use SBE=true [2023-12-18 20:25:04,928 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-18 20:25:04,928 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-18 20:25:04,929 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-18 20:25:04,929 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-18 20:25:04,930 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-18 20:25:04,930 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-18 20:25:04,930 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-18 20:25:04,930 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-18 20:25:04,931 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-18 20:25:04,931 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-18 20:25:04,931 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-18 20:25:04,931 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-18 20:25:04,931 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-18 20:25:04,932 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-18 20:25:04,932 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-18 20:25:04,932 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-18 20:25:04,933 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-18 20:25:04,933 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 20:25:04,933 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-18 20:25:04,933 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-18 20:25:04,933 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-18 20:25:04,933 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-18 20:25:04,933 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-18 20:25:04,933 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-18 20:25:04,934 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-18 20:25:04,934 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-18 20:25:04,934 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-18 20:25:04,934 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-18 20:25:04,934 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-18 20:25:05,109 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-18 20:25:05,121 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-18 20:25:05,124 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-18 20:25:05,125 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-18 20:25:05,125 INFO L274 PluginConnector]: CDTParser initialized [2023-12-18 20:25:05,126 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-patterns/array7_pattern.c [2023-12-18 20:25:06,071 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-18 20:25:06,189 INFO L384 CDTParser]: Found 1 translation units. [2023-12-18 20:25:06,190 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array7_pattern.c [2023-12-18 20:25:06,196 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12eff4487/36e96f61484d4e4ba829191bddcdfa1d/FLAGf9a3f2d5f [2023-12-18 20:25:06,209 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12eff4487/36e96f61484d4e4ba829191bddcdfa1d [2023-12-18 20:25:06,210 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-18 20:25:06,211 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-18 20:25:06,213 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-18 20:25:06,213 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-18 20:25:06,216 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-18 20:25:06,217 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 08:25:06" (1/1) ... [2023-12-18 20:25:06,217 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57b9d085 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:25:06, skipping insertion in model container [2023-12-18 20:25:06,217 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 08:25:06" (1/1) ... [2023-12-18 20:25:06,234 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-18 20:25:06,344 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] [2023-12-18 20:25:06,359 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 20:25:06,365 INFO L202 MainTranslator]: Completed pre-run [2023-12-18 20:25:06,376 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] [2023-12-18 20:25:06,385 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 20:25:06,394 INFO L206 MainTranslator]: Completed translation [2023-12-18 20:25:06,395 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:25:06 WrapperNode [2023-12-18 20:25:06,395 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-18 20:25:06,395 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-18 20:25:06,396 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-18 20:25:06,396 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-18 20:25:06,400 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:25:06" (1/1) ... [2023-12-18 20:25:06,408 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:25:06" (1/1) ... [2023-12-18 20:25:06,421 INFO L138 Inliner]: procedures = 16, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 92 [2023-12-18 20:25:06,421 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-18 20:25:06,421 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-18 20:25:06,422 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-18 20:25:06,422 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-18 20:25:06,428 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:25:06" (1/1) ... [2023-12-18 20:25:06,428 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:25:06" (1/1) ... [2023-12-18 20:25:06,430 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:25:06" (1/1) ... [2023-12-18 20:25:06,438 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]. [2023-12-18 20:25:06,438 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:25:06" (1/1) ... [2023-12-18 20:25:06,438 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:25:06" (1/1) ... [2023-12-18 20:25:06,442 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:25:06" (1/1) ... [2023-12-18 20:25:06,444 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:25:06" (1/1) ... [2023-12-18 20:25:06,445 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:25:06" (1/1) ... [2023-12-18 20:25:06,445 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:25:06" (1/1) ... [2023-12-18 20:25:06,447 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-18 20:25:06,447 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-18 20:25:06,447 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-18 20:25:06,447 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-18 20:25:06,448 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:25:06" (1/1) ... [2023-12-18 20:25:06,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 20:25:06,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:25:06,472 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) [2023-12-18 20:25:06,491 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 [2023-12-18 20:25:06,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-18 20:25:06,497 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-18 20:25:06,497 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-18 20:25:06,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-18 20:25:06,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-18 20:25:06,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-18 20:25:06,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-18 20:25:06,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-18 20:25:06,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-18 20:25:06,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-18 20:25:06,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-18 20:25:06,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-18 20:25:06,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-18 20:25:06,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-18 20:25:06,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-18 20:25:06,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-18 20:25:06,571 INFO L241 CfgBuilder]: Building ICFG [2023-12-18 20:25:06,575 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-18 20:25:06,780 INFO L282 CfgBuilder]: Performing block encoding [2023-12-18 20:25:06,810 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-18 20:25:06,810 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-18 20:25:06,811 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 08:25:06 BoogieIcfgContainer [2023-12-18 20:25:06,811 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-18 20:25:06,812 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-18 20:25:06,812 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-18 20:25:06,815 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-18 20:25:06,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 08:25:06" (1/3) ... [2023-12-18 20:25:06,815 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20854789 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 08:25:06, skipping insertion in model container [2023-12-18 20:25:06,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:25:06" (2/3) ... [2023-12-18 20:25:06,816 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20854789 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 08:25:06, skipping insertion in model container [2023-12-18 20:25:06,820 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 08:25:06" (3/3) ... [2023-12-18 20:25:06,821 INFO L112 eAbstractionObserver]: Analyzing ICFG array7_pattern.c [2023-12-18 20:25:06,834 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-18 20:25:06,834 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-18 20:25:06,877 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-18 20:25:06,883 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;@699a06a2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-18 20:25:06,883 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-18 20:25:06,886 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) [2023-12-18 20:25:06,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-18 20:25:06,893 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:25:06,893 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:25:06,894 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:25:06,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:25:06,900 INFO L85 PathProgramCache]: Analyzing trace with hash -7457711, now seen corresponding path program 1 times [2023-12-18 20:25:06,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:25:06,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121388722] [2023-12-18 20:25:06,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:25:06,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:25:06,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:25:07,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:25:07,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:25:07,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 20:25:07,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:25:07,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121388722] [2023-12-18 20:25:07,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121388722] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 20:25:07,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 20:25:07,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-18 20:25:07,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428569507] [2023-12-18 20:25:07,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 20:25:07,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-18 20:25:07,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:25:07,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-18 20:25:07,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-18 20:25:07,077 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) [2023-12-18 20:25:07,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:25:07,104 INFO L93 Difference]: Finished difference Result 40 states and 62 transitions. [2023-12-18 20:25:07,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-18 20:25:07,107 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 [2023-12-18 20:25:07,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:25:07,111 INFO L225 Difference]: With dead ends: 40 [2023-12-18 20:25:07,111 INFO L226 Difference]: Without dead ends: 19 [2023-12-18 20:25:07,113 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 [2023-12-18 20:25:07,115 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 [2023-12-18 20:25:07,115 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] [2023-12-18 20:25:07,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-12-18 20:25:07,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-12-18 20:25:07,139 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) [2023-12-18 20:25:07,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2023-12-18 20:25:07,141 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 14 [2023-12-18 20:25:07,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:25:07,142 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2023-12-18 20:25:07,142 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) [2023-12-18 20:25:07,142 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2023-12-18 20:25:07,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-18 20:25:07,144 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:25:07,144 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] [2023-12-18 20:25:07,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-18 20:25:07,145 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:25:07,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:25:07,146 INFO L85 PathProgramCache]: Analyzing trace with hash -856934570, now seen corresponding path program 1 times [2023-12-18 20:25:07,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:25:07,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873996030] [2023-12-18 20:25:07,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:25:07,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:25:07,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:25:07,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:25:07,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:25:07,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-18 20:25:07,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:25:07,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:25:07,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:25:07,395 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-18 20:25:07,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:25:07,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873996030] [2023-12-18 20:25:07,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873996030] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 20:25:07,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 20:25:07,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-18 20:25:07,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244178670] [2023-12-18 20:25:07,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 20:25:07,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-18 20:25:07,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:25:07,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-18 20:25:07,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-18 20:25:07,399 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) [2023-12-18 20:25:07,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:25:07,426 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2023-12-18 20:25:07,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-18 20:25:07,427 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 [2023-12-18 20:25:07,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:25:07,456 INFO L225 Difference]: With dead ends: 24 [2023-12-18 20:25:07,456 INFO L226 Difference]: Without dead ends: 20 [2023-12-18 20:25:07,456 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 [2023-12-18 20:25:07,457 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 [2023-12-18 20:25:07,457 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] [2023-12-18 20:25:07,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-12-18 20:25:07,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-12-18 20:25:07,461 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) [2023-12-18 20:25:07,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2023-12-18 20:25:07,462 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 26 [2023-12-18 20:25:07,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:25:07,463 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2023-12-18 20:25:07,464 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) [2023-12-18 20:25:07,464 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2023-12-18 20:25:07,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-18 20:25:07,467 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:25:07,468 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] [2023-12-18 20:25:07,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-18 20:25:07,468 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:25:07,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:25:07,469 INFO L85 PathProgramCache]: Analyzing trace with hash -765856431, now seen corresponding path program 1 times [2023-12-18 20:25:07,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:25:07,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50463989] [2023-12-18 20:25:07,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:25:07,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:25:07,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:25:07,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:25:07,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:25:07,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-18 20:25:07,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:25:07,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:25:07,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:25:07,619 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-18 20:25:07,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:25:07,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50463989] [2023-12-18 20:25:07,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50463989] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 20:25:07,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 20:25:07,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-18 20:25:07,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076223484] [2023-12-18 20:25:07,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 20:25:07,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-18 20:25:07,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:25:07,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-18 20:25:07,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-18 20:25:07,624 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) [2023-12-18 20:25:07,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:25:07,657 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2023-12-18 20:25:07,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-18 20:25:07,658 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 [2023-12-18 20:25:07,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:25:07,660 INFO L225 Difference]: With dead ends: 37 [2023-12-18 20:25:07,660 INFO L226 Difference]: Without dead ends: 21 [2023-12-18 20:25:07,660 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 [2023-12-18 20:25:07,663 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 [2023-12-18 20:25:07,664 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] [2023-12-18 20:25:07,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-12-18 20:25:07,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-12-18 20:25:07,671 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) [2023-12-18 20:25:07,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2023-12-18 20:25:07,673 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 27 [2023-12-18 20:25:07,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:25:07,673 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2023-12-18 20:25:07,673 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) [2023-12-18 20:25:07,673 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2023-12-18 20:25:07,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-18 20:25:07,674 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:25:07,674 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] [2023-12-18 20:25:07,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-18 20:25:07,675 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:25:07,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:25:07,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1693469014, now seen corresponding path program 1 times [2023-12-18 20:25:07,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:25:07,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532419182] [2023-12-18 20:25:07,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:25:07,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:25:07,694 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-18 20:25:07,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1300056043] [2023-12-18 20:25:07,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:25:07,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:25:07,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:25:07,709 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) [2023-12-18 20:25:07,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-18 20:25:07,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:25:07,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-18 20:25:07,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:25:07,852 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-18 20:25:07,852 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:25:08,080 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-18 20:25:08,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:25:08,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532419182] [2023-12-18 20:25:08,081 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-18 20:25:08,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300056043] [2023-12-18 20:25:08,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300056043] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 20:25:08,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-18 20:25:08,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 15 [2023-12-18 20:25:08,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601822169] [2023-12-18 20:25:08,085 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-18 20:25:08,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-18 20:25:08,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:25:08,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-18 20:25:08,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2023-12-18 20:25:08,087 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) [2023-12-18 20:25:08,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:25:08,250 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2023-12-18 20:25:08,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-18 20:25:08,251 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 [2023-12-18 20:25:08,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:25:08,251 INFO L225 Difference]: With dead ends: 63 [2023-12-18 20:25:08,251 INFO L226 Difference]: Without dead ends: 33 [2023-12-18 20:25:08,252 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 [2023-12-18 20:25:08,253 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 [2023-12-18 20:25:08,253 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] [2023-12-18 20:25:08,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-12-18 20:25:08,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 23. [2023-12-18 20:25:08,255 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) [2023-12-18 20:25:08,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2023-12-18 20:25:08,256 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 28 [2023-12-18 20:25:08,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:25:08,256 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2023-12-18 20:25:08,256 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) [2023-12-18 20:25:08,256 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2023-12-18 20:25:08,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-18 20:25:08,257 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:25:08,257 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] [2023-12-18 20:25:08,274 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-18 20:25:08,462 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 [2023-12-18 20:25:08,462 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:25:08,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:25:08,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1532817290, now seen corresponding path program 2 times [2023-12-18 20:25:08,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:25:08,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174767640] [2023-12-18 20:25:08,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:25:08,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:25:08,487 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-18 20:25:08,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1907282648] [2023-12-18 20:25:08,488 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-18 20:25:08,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:25:08,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:25:08,496 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) [2023-12-18 20:25:08,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-18 20:25:08,560 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-18 20:25:08,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 20:25:08,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-18 20:25:08,563 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:25:08,613 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-18 20:25:08,613 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:25:08,658 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-18 20:25:08,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:25:08,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174767640] [2023-12-18 20:25:08,658 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-18 20:25:08,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907282648] [2023-12-18 20:25:08,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907282648] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 20:25:08,658 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-18 20:25:08,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2023-12-18 20:25:08,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222181197] [2023-12-18 20:25:08,659 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-18 20:25:08,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-18 20:25:08,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:25:08,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-18 20:25:08,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-18 20:25:08,660 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) [2023-12-18 20:25:08,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:25:08,756 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2023-12-18 20:25:08,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-18 20:25:08,759 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 [2023-12-18 20:25:08,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:25:08,763 INFO L225 Difference]: With dead ends: 33 [2023-12-18 20:25:08,763 INFO L226 Difference]: Without dead ends: 29 [2023-12-18 20:25:08,763 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 [2023-12-18 20:25:08,764 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 25 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 20:25:08,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 87 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 20:25:08,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-12-18 20:25:08,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-12-18 20:25:08,771 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) [2023-12-18 20:25:08,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2023-12-18 20:25:08,772 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 30 [2023-12-18 20:25:08,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:25:08,772 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2023-12-18 20:25:08,772 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) [2023-12-18 20:25:08,772 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2023-12-18 20:25:08,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-18 20:25:08,774 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:25:08,774 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] [2023-12-18 20:25:08,782 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-18 20:25:08,982 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 [2023-12-18 20:25:08,983 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:25:08,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:25:08,984 INFO L85 PathProgramCache]: Analyzing trace with hash 801599978, now seen corresponding path program 3 times [2023-12-18 20:25:08,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:25:08,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929587981] [2023-12-18 20:25:08,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:25:08,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:25:08,999 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-18 20:25:08,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [487434647] [2023-12-18 20:25:08,999 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-18 20:25:08,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:25:08,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:25:09,000 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) [2023-12-18 20:25:09,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-18 20:25:09,168 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-18 20:25:09,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 20:25:09,170 WARN L260 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 77 conjunts are in the unsatisfiable core [2023-12-18 20:25:09,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:25:09,223 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 [2023-12-18 20:25:09,236 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 [2023-12-18 20:25:09,275 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 [2023-12-18 20:25:09,281 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 [2023-12-18 20:25:09,326 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 [2023-12-18 20:25:09,340 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 20:25:09,340 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 [2023-12-18 20:25:10,355 INFO L349 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2023-12-18 20:25:10,356 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 [2023-12-18 20:25:10,565 INFO L349 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2023-12-18 20:25:10,566 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 [2023-12-18 20:25:10,709 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-18 20:25:10,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 20:25:10,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 20:25:10,712 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-18 20:25:10,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 20:25:10,715 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 [2023-12-18 20:25:10,768 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-18 20:25:10,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 20:25:10,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 20:25:10,772 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-18 20:25:10,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 20:25:10,774 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-18 20:25:10,775 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 [2023-12-18 20:25:10,890 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-18 20:25:10,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 20:25:10,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 20:25:10,895 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-18 20:25:10,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 20:25:10,898 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 [2023-12-18 20:25:10,956 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-18 20:25:10,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 20:25:10,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 20:25:10,959 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-18 20:25:10,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 20:25:10,961 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-18 20:25:10,962 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 [2023-12-18 20:25:19,228 INFO L349 Elim1Store]: treesize reduction 341, result has 43.3 percent of original size [2023-12-18 20:25:19,229 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 [2023-12-18 20:25:20,387 INFO L349 Elim1Store]: treesize reduction 161, result has 60.2 percent of original size [2023-12-18 20:25:20,387 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 [2023-12-18 20:33:01,402 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 101 [2023-12-18 20:33:01,402 WARN L249 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2023-12-18 20:33:01,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:33:01,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929587981] [2023-12-18 20:33:01,403 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-18 20:33:01,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487434647] [2023-12-18 20:33:01,403 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2023-12-18 20:33:01,409 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-18 20:33:01,607 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 [2023-12-18 20:33:01,608 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:281) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.checkRedundancy(SimplifyDDA2.java:268) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:410) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:394) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:500) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:252) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:324) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:731) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.pushInner(QuantifierPusher.java:275) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:194) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:338) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:338) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:298) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:110) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 81 more [2023-12-18 20:33:01,612 INFO L158 Benchmark]: Toolchain (without parser) took 475400.45ms. Allocated memory was 182.5MB in the beginning and 940.6MB in the end (delta: 758.1MB). Free memory was 144.1MB in the beginning and 888.5MB in the end (delta: -744.4MB). Peak memory consumption was 564.9MB. Max. memory is 8.0GB. [2023-12-18 20:33:01,612 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 182.5MB. Free memory is still 140.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-18 20:33:01,612 INFO L158 Benchmark]: CACSL2BoogieTranslator took 182.08ms. Allocated memory is still 182.5MB. Free memory was 143.9MB in the beginning and 132.4MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-18 20:33:01,612 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.54ms. Allocated memory is still 182.5MB. Free memory was 132.4MB in the beginning and 130.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-18 20:33:01,612 INFO L158 Benchmark]: Boogie Preprocessor took 25.35ms. Allocated memory is still 182.5MB. Free memory was 130.4MB in the beginning and 128.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-18 20:33:01,613 INFO L158 Benchmark]: RCFGBuilder took 363.44ms. Allocated memory is still 182.5MB. Free memory was 128.3MB in the beginning and 114.7MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-18 20:33:01,613 INFO L158 Benchmark]: TraceAbstraction took 474798.98ms. Allocated memory was 182.5MB in the beginning and 940.6MB in the end (delta: 758.1MB). Free memory was 113.7MB in the beginning and 888.5MB in the end (delta: -774.8MB). Peak memory consumption was 534.5MB. Max. memory is 8.0GB. [2023-12-18 20:33:01,614 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 182.5MB. Free memory is still 140.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 182.08ms. Allocated memory is still 182.5MB. Free memory was 143.9MB in the beginning and 132.4MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 25.54ms. Allocated memory is still 182.5MB. Free memory was 132.4MB in the beginning and 130.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.35ms. Allocated memory is still 182.5MB. Free memory was 130.4MB in the beginning and 128.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 363.44ms. Allocated memory is still 182.5MB. Free memory was 128.3MB in the beginning and 114.7MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 474798.98ms. Allocated memory was 182.5MB in the beginning and 940.6MB in the end (delta: 758.1MB). Free memory was 113.7MB in the beginning and 888.5MB in the end (delta: -774.8MB). Peak memory consumption was 534.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...