/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/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-32.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 20:14:26,063 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 20:14:26,120 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 20:14:26,125 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 20:14:26,125 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 20:14:26,152 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 20:14:26,153 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 20:14:26,153 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 20:14:26,154 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 20:14:26,156 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 20:14:26,156 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 20:14:26,157 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 20:14:26,157 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 20:14:26,158 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 20:14:26,158 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 20:14:26,159 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 20:14:26,159 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 20:14:26,159 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 20:14:26,159 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 20:14:26,159 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 20:14:26,159 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 20:14:26,160 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 20:14:26,160 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 20:14:26,160 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 20:14:26,160 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 20:14:26,160 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 20:14:26,160 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 20:14:26,160 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 20:14:26,161 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 20:14:26,161 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 20:14:26,162 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 20:14:26,162 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 20:14:26,162 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 20:14:26,162 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 20:14:26,162 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 20:14:26,162 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 20:14:26,162 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 20:14:26,163 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 20:14:26,163 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 20:14:26,163 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 20:14:26,163 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 20:14:26,163 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 20:14:26,163 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 20:14:26,163 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 20:14:26,352 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 20:14:26,379 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 20:14:26,380 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 20:14:26,381 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 20:14:26,381 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 20:14:26,382 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-32.i [2023-12-15 20:14:27,457 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 20:14:27,653 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 20:14:27,653 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-32.i [2023-12-15 20:14:27,661 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c74ed6393/9eb351932a8e4d31a76702180f2c309d/FLAG70cf8ea16 [2023-12-15 20:14:27,690 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c74ed6393/9eb351932a8e4d31a76702180f2c309d [2023-12-15 20:14:27,692 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 20:14:27,693 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 20:14:27,694 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 20:14:27,694 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 20:14:27,709 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 20:14:27,710 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:14:27" (1/1) ... [2023-12-15 20:14:27,710 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30659b8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:14:27, skipping insertion in model container [2023-12-15 20:14:27,710 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:14:27" (1/1) ... [2023-12-15 20:14:27,779 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 20:14:27,893 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-32.i[919,932] [2023-12-15 20:14:27,963 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 20:14:27,979 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 20:14:27,986 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-32.i[919,932] [2023-12-15 20:14:28,018 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 20:14:28,034 INFO L206 MainTranslator]: Completed translation [2023-12-15 20:14:28,035 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:14:28 WrapperNode [2023-12-15 20:14:28,035 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 20:14:28,037 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 20:14:28,037 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 20:14:28,037 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 20:14:28,042 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:14:28" (1/1) ... [2023-12-15 20:14:28,060 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:14:28" (1/1) ... [2023-12-15 20:14:28,090 INFO L138 Inliner]: procedures = 26, calls = 42, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 251 [2023-12-15 20:14:28,090 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 20:14:28,091 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 20:14:28,091 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 20:14:28,091 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 20:14:28,099 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:14:28" (1/1) ... [2023-12-15 20:14:28,099 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:14:28" (1/1) ... [2023-12-15 20:14:28,102 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:14:28" (1/1) ... [2023-12-15 20:14:28,119 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 20:14:28,119 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:14:28" (1/1) ... [2023-12-15 20:14:28,119 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:14:28" (1/1) ... [2023-12-15 20:14:28,142 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:14:28" (1/1) ... [2023-12-15 20:14:28,145 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:14:28" (1/1) ... [2023-12-15 20:14:28,147 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:14:28" (1/1) ... [2023-12-15 20:14:28,162 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:14:28" (1/1) ... [2023-12-15 20:14:28,166 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 20:14:28,167 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 20:14:28,167 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 20:14:28,167 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 20:14:28,167 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:14:28" (1/1) ... [2023-12-15 20:14:28,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 20:14:28,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:14:28,225 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 20:14:28,272 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 20:14:28,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 20:14:28,278 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 20:14:28,278 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 20:14:28,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 20:14:28,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 20:14:28,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 20:14:28,371 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 20:14:28,372 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 20:14:28,711 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 20:14:28,733 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 20:14:28,733 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 20:14:28,733 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:14:28 BoogieIcfgContainer [2023-12-15 20:14:28,733 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 20:14:28,735 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 20:14:28,735 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 20:14:28,737 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 20:14:28,737 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 08:14:27" (1/3) ... [2023-12-15 20:14:28,738 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b7b4a43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:14:28, skipping insertion in model container [2023-12-15 20:14:28,738 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:14:28" (2/3) ... [2023-12-15 20:14:28,738 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b7b4a43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:14:28, skipping insertion in model container [2023-12-15 20:14:28,738 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:14:28" (3/3) ... [2023-12-15 20:14:28,740 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-co_file-32.i [2023-12-15 20:14:28,752 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 20:14:28,752 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 20:14:28,784 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 20:14:28,789 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;@75473a4c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 20:14:28,789 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 20:14:28,793 INFO L276 IsEmpty]: Start isEmpty. Operand has 97 states, 65 states have (on average 1.6153846153846154) internal successors, (105), 66 states have internal predecessors, (105), 29 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-12-15 20:14:28,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2023-12-15 20:14:28,809 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:14:28,809 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:14:28,810 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:14:28,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:14:28,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1440808317, now seen corresponding path program 1 times [2023-12-15 20:14:28,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:14:28,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330667472] [2023-12-15 20:14:28,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:14:28,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:14:28,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 20:14:29,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 20:14:29,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 20:14:29,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-15 20:14:29,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-15 20:14:29,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 20:14:29,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 20:14:29,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 20:14:29,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 20:14:29,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-15 20:14:29,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-15 20:14:29,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-15 20:14:29,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-15 20:14:29,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 20:14:29,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-15 20:14:29,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-15 20:14:29,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-15 20:14:29,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-15 20:14:29,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-15 20:14:29,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-15 20:14:29,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-15 20:14:29,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-15 20:14:29,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-15 20:14:29,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-15 20:14:29,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-12-15 20:14:29,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-12-15 20:14:29,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-15 20:14:29,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-12-15 20:14:29,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-15 20:14:29,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2023-12-15 20:14:29,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:14:29,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330667472] [2023-12-15 20:14:29,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330667472] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:14:29,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:14:29,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 20:14:29,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318214760] [2023-12-15 20:14:29,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:14:29,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 20:14:29,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:14:29,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 20:14:29,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 20:14:29,221 INFO L87 Difference]: Start difference. First operand has 97 states, 65 states have (on average 1.6153846153846154) internal successors, (105), 66 states have internal predecessors, (105), 29 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 2 states have call successors, (29) [2023-12-15 20:14:29,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:14:29,280 INFO L93 Difference]: Finished difference Result 191 states and 353 transitions. [2023-12-15 20:14:29,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 20:14:29,282 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 2 states have call successors, (29) Word has length 186 [2023-12-15 20:14:29,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:14:29,288 INFO L225 Difference]: With dead ends: 191 [2023-12-15 20:14:29,289 INFO L226 Difference]: Without dead ends: 95 [2023-12-15 20:14:29,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 89 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 20:14:29,298 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:14:29,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 154 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:14:29,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-12-15 20:14:29,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2023-12-15 20:14:29,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 64 states have (on average 1.546875) internal successors, (99), 64 states have internal predecessors, (99), 29 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-12-15 20:14:29,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 157 transitions. [2023-12-15 20:14:29,337 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 157 transitions. Word has length 186 [2023-12-15 20:14:29,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:14:29,337 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 157 transitions. [2023-12-15 20:14:29,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 2 states have call successors, (29) [2023-12-15 20:14:29,338 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 157 transitions. [2023-12-15 20:14:29,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2023-12-15 20:14:29,340 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:14:29,341 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:14:29,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 20:14:29,341 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:14:29,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:14:29,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1638614765, now seen corresponding path program 1 times [2023-12-15 20:14:29,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:14:29,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408260564] [2023-12-15 20:14:29,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:14:29,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:14:29,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 20:14:29,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 20:14:29,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 20:14:29,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-15 20:14:29,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-15 20:14:29,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 20:14:29,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 20:14:29,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 20:14:29,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 20:14:29,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-15 20:14:29,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-15 20:14:29,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-15 20:14:29,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-15 20:14:29,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 20:14:29,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-15 20:14:29,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-15 20:14:29,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-15 20:14:29,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-15 20:14:29,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-15 20:14:29,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-15 20:14:29,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-15 20:14:29,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-15 20:14:29,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-15 20:14:29,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-15 20:14:29,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-12-15 20:14:29,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-12-15 20:14:29,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-15 20:14:29,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-12-15 20:14:29,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-15 20:14:29,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:29,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2023-12-15 20:14:29,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:14:29,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408260564] [2023-12-15 20:14:29,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408260564] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:14:29,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:14:29,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 20:14:29,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384983501] [2023-12-15 20:14:29,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:14:29,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 20:14:29,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:14:29,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 20:14:29,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:14:29,796 INFO L87 Difference]: Start difference. First operand 95 states and 157 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-12-15 20:14:29,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:14:29,878 INFO L93 Difference]: Finished difference Result 283 states and 469 transitions. [2023-12-15 20:14:29,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 20:14:29,879 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) Word has length 186 [2023-12-15 20:14:29,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:14:29,885 INFO L225 Difference]: With dead ends: 283 [2023-12-15 20:14:29,885 INFO L226 Difference]: Without dead ends: 189 [2023-12-15 20:14:29,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:14:29,888 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 101 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:14:29,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 291 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:14:29,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-12-15 20:14:29,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 186. [2023-12-15 20:14:29,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 125 states have (on average 1.544) internal successors, (193), 125 states have internal predecessors, (193), 58 states have call successors, (58), 2 states have call predecessors, (58), 2 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2023-12-15 20:14:29,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 309 transitions. [2023-12-15 20:14:29,932 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 309 transitions. Word has length 186 [2023-12-15 20:14:29,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:14:29,933 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 309 transitions. [2023-12-15 20:14:29,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-12-15 20:14:29,933 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 309 transitions. [2023-12-15 20:14:29,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2023-12-15 20:14:29,940 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:14:29,940 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:14:29,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 20:14:29,941 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:14:29,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:14:29,941 INFO L85 PathProgramCache]: Analyzing trace with hash 50266863, now seen corresponding path program 1 times [2023-12-15 20:14:29,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:14:29,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250773030] [2023-12-15 20:14:29,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:14:29,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:14:29,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:30,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 20:14:30,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:30,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 20:14:30,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:30,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 20:14:30,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:30,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-15 20:14:30,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:30,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-15 20:14:30,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:30,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 20:14:30,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:30,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 20:14:30,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:30,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 20:14:30,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:30,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 20:14:30,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:30,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-15 20:14:30,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:30,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-15 20:14:30,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:30,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-15 20:14:30,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:30,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-15 20:14:30,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:30,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 20:14:30,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:30,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-15 20:14:30,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:30,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-15 20:14:30,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:30,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-15 20:14:30,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:30,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-15 20:14:30,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:30,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-15 20:14:30,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:30,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-15 20:14:30,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:30,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-15 20:14:30,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:30,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-15 20:14:30,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:30,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-15 20:14:30,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:30,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-15 20:14:30,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:30,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-12-15 20:14:30,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:30,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-12-15 20:14:30,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:30,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-15 20:14:30,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:30,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-12-15 20:14:30,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:30,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-15 20:14:30,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:30,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2023-12-15 20:14:30,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:14:30,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250773030] [2023-12-15 20:14:30,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250773030] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:14:30,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:14:30,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 20:14:30,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682926619] [2023-12-15 20:14:30,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:14:30,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 20:14:30,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:14:30,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 20:14:30,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-15 20:14:30,474 INFO L87 Difference]: Start difference. First operand 186 states and 309 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 2 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2023-12-15 20:14:30,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:14:30,854 INFO L93 Difference]: Finished difference Result 814 states and 1344 transitions. [2023-12-15 20:14:30,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 20:14:30,854 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 2 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 186 [2023-12-15 20:14:30,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:14:30,861 INFO L225 Difference]: With dead ends: 814 [2023-12-15 20:14:30,861 INFO L226 Difference]: Without dead ends: 629 [2023-12-15 20:14:30,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-12-15 20:14:30,866 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 948 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 20:14:30,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [948 Valid, 633 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 20:14:30,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2023-12-15 20:14:30,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 551. [2023-12-15 20:14:30,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 367 states have (on average 1.5177111716621254) internal successors, (557), 370 states have internal predecessors, (557), 174 states have call successors, (174), 9 states have call predecessors, (174), 9 states have return successors, (174), 171 states have call predecessors, (174), 174 states have call successors, (174) [2023-12-15 20:14:30,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 905 transitions. [2023-12-15 20:14:30,946 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 905 transitions. Word has length 186 [2023-12-15 20:14:30,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:14:30,947 INFO L495 AbstractCegarLoop]: Abstraction has 551 states and 905 transitions. [2023-12-15 20:14:30,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 2 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2023-12-15 20:14:30,947 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 905 transitions. [2023-12-15 20:14:30,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-15 20:14:30,949 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:14:30,949 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:14:30,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 20:14:30,949 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:14:30,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:14:30,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1287794622, now seen corresponding path program 1 times [2023-12-15 20:14:30,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:14:30,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968866317] [2023-12-15 20:14:30,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:14:30,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:14:31,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 20:14:31,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 20:14:31,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 20:14:31,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-15 20:14:31,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-15 20:14:31,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 20:14:31,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 20:14:31,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 20:14:31,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 20:14:31,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-15 20:14:31,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-15 20:14:31,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-15 20:14:31,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-15 20:14:31,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 20:14:31,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-15 20:14:31,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-15 20:14:31,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-15 20:14:31,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-15 20:14:31,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-15 20:14:31,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-15 20:14:31,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-15 20:14:31,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-15 20:14:31,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-15 20:14:31,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-15 20:14:31,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-12-15 20:14:31,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-12-15 20:14:31,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-15 20:14:31,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-12-15 20:14:31,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-15 20:14:31,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2023-12-15 20:14:31,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:14:31,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968866317] [2023-12-15 20:14:31,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968866317] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:14:31,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:14:31,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 20:14:31,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87348984] [2023-12-15 20:14:31,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:14:31,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 20:14:31,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:14:31,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 20:14:31,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 20:14:31,282 INFO L87 Difference]: Start difference. First operand 551 states and 905 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-12-15 20:14:31,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:14:31,471 INFO L93 Difference]: Finished difference Result 1667 states and 2762 transitions. [2023-12-15 20:14:31,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 20:14:31,472 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) Word has length 187 [2023-12-15 20:14:31,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:14:31,478 INFO L225 Difference]: With dead ends: 1667 [2023-12-15 20:14:31,478 INFO L226 Difference]: Without dead ends: 1117 [2023-12-15 20:14:31,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 61 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 20:14:31,484 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 173 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 20:14:31,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 482 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 20:14:31,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1117 states. [2023-12-15 20:14:31,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1117 to 921. [2023-12-15 20:14:31,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 921 states, 615 states have (on average 1.5170731707317073) internal successors, (933), 620 states have internal predecessors, (933), 290 states have call successors, (290), 15 states have call predecessors, (290), 15 states have return successors, (290), 285 states have call predecessors, (290), 290 states have call successors, (290) [2023-12-15 20:14:31,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 1513 transitions. [2023-12-15 20:14:31,583 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 1513 transitions. Word has length 187 [2023-12-15 20:14:31,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:14:31,584 INFO L495 AbstractCegarLoop]: Abstraction has 921 states and 1513 transitions. [2023-12-15 20:14:31,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-12-15 20:14:31,584 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 1513 transitions. [2023-12-15 20:14:31,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-15 20:14:31,587 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:14:31,587 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:14:31,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 20:14:31,587 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:14:31,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:14:31,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1589841816, now seen corresponding path program 1 times [2023-12-15 20:14:31,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:14:31,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564876582] [2023-12-15 20:14:31,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:14:31,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:14:31,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 20:14:31,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 20:14:31,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 20:14:31,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-15 20:14:31,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-15 20:14:31,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 20:14:31,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 20:14:31,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 20:14:31,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 20:14:31,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-15 20:14:31,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-15 20:14:31,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-15 20:14:31,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-15 20:14:31,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 20:14:31,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-15 20:14:31,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-15 20:14:31,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-15 20:14:31,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-15 20:14:31,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-15 20:14:31,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-15 20:14:31,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-15 20:14:31,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-15 20:14:31,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-15 20:14:31,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-15 20:14:31,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-12-15 20:14:31,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-12-15 20:14:31,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-15 20:14:31,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-12-15 20:14:31,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-15 20:14:31,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:31,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2023-12-15 20:14:31,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:14:31,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564876582] [2023-12-15 20:14:31,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564876582] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:14:31,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:14:31,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 20:14:31,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109182361] [2023-12-15 20:14:31,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:14:31,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 20:14:31,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:14:31,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 20:14:31,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 20:14:31,881 INFO L87 Difference]: Start difference. First operand 921 states and 1513 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-12-15 20:14:32,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:14:32,033 INFO L93 Difference]: Finished difference Result 2473 states and 4046 transitions. [2023-12-15 20:14:32,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 20:14:32,034 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) Word has length 187 [2023-12-15 20:14:32,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:14:32,041 INFO L225 Difference]: With dead ends: 2473 [2023-12-15 20:14:32,041 INFO L226 Difference]: Without dead ends: 1553 [2023-12-15 20:14:32,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 20:14:32,044 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 87 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 20:14:32,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 467 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 20:14:32,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1553 states. [2023-12-15 20:14:32,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1553 to 1511. [2023-12-15 20:14:32,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1511 states, 1000 states have (on average 1.493) internal successors, (1493), 1015 states have internal predecessors, (1493), 480 states have call successors, (480), 30 states have call predecessors, (480), 30 states have return successors, (480), 465 states have call predecessors, (480), 480 states have call successors, (480) [2023-12-15 20:14:32,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1511 states to 1511 states and 2453 transitions. [2023-12-15 20:14:32,230 INFO L78 Accepts]: Start accepts. Automaton has 1511 states and 2453 transitions. Word has length 187 [2023-12-15 20:14:32,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:14:32,230 INFO L495 AbstractCegarLoop]: Abstraction has 1511 states and 2453 transitions. [2023-12-15 20:14:32,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-12-15 20:14:32,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1511 states and 2453 transitions. [2023-12-15 20:14:32,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-15 20:14:32,232 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:14:32,232 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:14:32,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 20:14:32,232 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:14:32,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:14:32,233 INFO L85 PathProgramCache]: Analyzing trace with hash 309978138, now seen corresponding path program 1 times [2023-12-15 20:14:32,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:14:32,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345091177] [2023-12-15 20:14:32,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:14:32,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:14:32,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:32,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 20:14:32,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:32,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 20:14:32,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:32,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 20:14:32,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:32,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-15 20:14:32,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:32,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-15 20:14:32,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:32,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 20:14:32,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:32,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 20:14:32,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:32,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 20:14:32,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:32,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 20:14:32,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:32,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-15 20:14:32,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:32,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-15 20:14:32,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:32,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-15 20:14:32,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:32,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-15 20:14:32,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:32,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 20:14:32,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:32,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-15 20:14:32,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:32,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-15 20:14:32,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:32,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-15 20:14:32,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:32,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-15 20:14:32,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:32,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-15 20:14:32,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:32,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-15 20:14:32,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:32,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-15 20:14:32,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:32,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-15 20:14:32,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:32,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-15 20:14:32,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:32,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-15 20:14:32,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:32,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-12-15 20:14:32,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:32,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-12-15 20:14:32,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:32,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-15 20:14:32,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:32,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-12-15 20:14:32,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:32,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-15 20:14:32,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:32,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 42 proven. 42 refuted. 0 times theorem prover too weak. 1540 trivial. 0 not checked. [2023-12-15 20:14:32,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:14:32,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345091177] [2023-12-15 20:14:32,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345091177] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 20:14:32,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268329619] [2023-12-15 20:14:32,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:14:32,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:14:32,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:14:32,506 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 20:14:32,571 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 20:14:32,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:32,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 20:14:32,688 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:14:32,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 840 proven. 42 refuted. 0 times theorem prover too weak. 742 trivial. 0 not checked. [2023-12-15 20:14:32,879 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:14:33,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 42 proven. 42 refuted. 0 times theorem prover too weak. 1540 trivial. 0 not checked. [2023-12-15 20:14:33,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268329619] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:14:33,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 20:14:33,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2023-12-15 20:14:33,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772370770] [2023-12-15 20:14:33,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 20:14:33,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 20:14:33,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:14:33,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 20:14:33,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 20:14:33,038 INFO L87 Difference]: Start difference. First operand 1511 states and 2453 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2023-12-15 20:14:33,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:14:33,396 INFO L93 Difference]: Finished difference Result 3192 states and 5069 transitions. [2023-12-15 20:14:33,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 20:14:33,397 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 187 [2023-12-15 20:14:33,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:14:33,403 INFO L225 Difference]: With dead ends: 3192 [2023-12-15 20:14:33,403 INFO L226 Difference]: Without dead ends: 1682 [2023-12-15 20:14:33,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 427 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-15 20:14:33,408 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 182 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 20:14:33,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 348 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 20:14:33,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1682 states. [2023-12-15 20:14:33,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1682 to 1617. [2023-12-15 20:14:33,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1617 states, 1071 states have (on average 1.4509803921568627) internal successors, (1554), 1087 states have internal predecessors, (1554), 494 states have call successors, (494), 51 states have call predecessors, (494), 51 states have return successors, (494), 478 states have call predecessors, (494), 494 states have call successors, (494) [2023-12-15 20:14:33,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 2542 transitions. [2023-12-15 20:14:33,608 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 2542 transitions. Word has length 187 [2023-12-15 20:14:33,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:14:33,610 INFO L495 AbstractCegarLoop]: Abstraction has 1617 states and 2542 transitions. [2023-12-15 20:14:33,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2023-12-15 20:14:33,610 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 2542 transitions. [2023-12-15 20:14:33,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-12-15 20:14:33,612 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:14:33,612 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:14:33,618 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 20:14:33,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-12-15 20:14:33,819 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:14:33,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:14:33,820 INFO L85 PathProgramCache]: Analyzing trace with hash -87791136, now seen corresponding path program 1 times [2023-12-15 20:14:33,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:14:33,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590434078] [2023-12-15 20:14:33,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:14:33,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:14:33,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:34,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 20:14:34,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:34,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 20:14:34,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:34,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 20:14:34,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:34,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-15 20:14:34,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:34,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-15 20:14:34,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:34,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 20:14:34,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:34,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 20:14:34,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:34,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 20:14:34,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:34,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 20:14:34,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:34,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-15 20:14:34,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:34,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-15 20:14:34,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:34,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-15 20:14:34,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:34,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-15 20:14:34,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:34,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 20:14:34,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:34,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-15 20:14:34,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:34,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-15 20:14:34,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:34,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-15 20:14:34,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:34,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-15 20:14:34,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:34,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-15 20:14:34,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:34,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-15 20:14:34,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:34,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-15 20:14:34,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:34,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-15 20:14:34,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:34,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-15 20:14:34,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:34,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-15 20:14:34,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:34,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-12-15 20:14:34,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:34,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-12-15 20:14:34,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:34,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-15 20:14:34,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:34,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-12-15 20:14:34,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:34,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-15 20:14:34,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:34,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 60 proven. 24 refuted. 0 times theorem prover too weak. 1540 trivial. 0 not checked. [2023-12-15 20:14:34,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:14:34,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590434078] [2023-12-15 20:14:34,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590434078] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 20:14:34,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799818876] [2023-12-15 20:14:34,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:14:34,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:14:34,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:14:34,317 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 20:14:34,343 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 20:14:34,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:34,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-15 20:14:34,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:14:35,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 900 proven. 162 refuted. 0 times theorem prover too weak. 562 trivial. 0 not checked. [2023-12-15 20:14:35,529 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:14:36,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 69 proven. 96 refuted. 0 times theorem prover too weak. 1459 trivial. 0 not checked. [2023-12-15 20:14:36,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799818876] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:14:36,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 20:14:36,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 13] total 35 [2023-12-15 20:14:36,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390224560] [2023-12-15 20:14:36,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 20:14:36,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-15 20:14:36,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:14:36,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-15 20:14:36,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=958, Unknown=0, NotChecked=0, Total=1190 [2023-12-15 20:14:36,398 INFO L87 Difference]: Start difference. First operand 1617 states and 2542 transitions. Second operand has 35 states, 35 states have (on average 4.371428571428571) internal successors, (153), 35 states have internal predecessors, (153), 10 states have call successors, (87), 5 states have call predecessors, (87), 10 states have return successors, (87), 10 states have call predecessors, (87), 10 states have call successors, (87) [2023-12-15 20:14:46,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:14:46,012 INFO L93 Difference]: Finished difference Result 7283 states and 10825 transitions. [2023-12-15 20:14:46,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2023-12-15 20:14:46,013 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.371428571428571) internal successors, (153), 35 states have internal predecessors, (153), 10 states have call successors, (87), 5 states have call predecessors, (87), 10 states have return successors, (87), 10 states have call predecessors, (87), 10 states have call successors, (87) Word has length 188 [2023-12-15 20:14:46,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:14:46,033 INFO L225 Difference]: With dead ends: 7283 [2023-12-15 20:14:46,034 INFO L226 Difference]: Without dead ends: 5693 [2023-12-15 20:14:46,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 664 GetRequests, 437 SyntacticMatches, 0 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23581 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=9787, Invalid=42425, Unknown=0, NotChecked=0, Total=52212 [2023-12-15 20:14:46,047 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 3857 mSDsluCounter, 2063 mSDsCounter, 0 mSdLazyCounter, 3539 mSolverCounterSat, 1411 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3881 SdHoareTripleChecker+Valid, 2200 SdHoareTripleChecker+Invalid, 4950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1411 IncrementalHoareTripleChecker+Valid, 3539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-15 20:14:46,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3881 Valid, 2200 Invalid, 4950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1411 Valid, 3539 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-15 20:14:46,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5693 states. [2023-12-15 20:14:46,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5693 to 2612. [2023-12-15 20:14:46,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2612 states, 1908 states have (on average 1.5131027253668763) internal successors, (2887), 1940 states have internal predecessors, (2887), 588 states have call successors, (588), 115 states have call predecessors, (588), 115 states have return successors, (588), 556 states have call predecessors, (588), 588 states have call successors, (588) [2023-12-15 20:14:46,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2612 states to 2612 states and 4063 transitions. [2023-12-15 20:14:46,342 INFO L78 Accepts]: Start accepts. Automaton has 2612 states and 4063 transitions. Word has length 188 [2023-12-15 20:14:46,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:14:46,342 INFO L495 AbstractCegarLoop]: Abstraction has 2612 states and 4063 transitions. [2023-12-15 20:14:46,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.371428571428571) internal successors, (153), 35 states have internal predecessors, (153), 10 states have call successors, (87), 5 states have call predecessors, (87), 10 states have return successors, (87), 10 states have call predecessors, (87), 10 states have call successors, (87) [2023-12-15 20:14:46,343 INFO L276 IsEmpty]: Start isEmpty. Operand 2612 states and 4063 transitions. [2023-12-15 20:14:46,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-12-15 20:14:46,344 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:14:46,345 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:14:46,352 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 20:14:46,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-12-15 20:14:46,552 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:14:46,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:14:46,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1716076743, now seen corresponding path program 1 times [2023-12-15 20:14:46,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:14:46,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166208894] [2023-12-15 20:14:46,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:14:46,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:14:46,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:47,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 20:14:47,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:47,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 20:14:47,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:47,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 20:14:47,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:47,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-15 20:14:47,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:47,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-15 20:14:47,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:47,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 20:14:47,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:47,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 20:14:47,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:47,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 20:14:47,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:47,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 20:14:47,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:47,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-15 20:14:47,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:47,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-15 20:14:47,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:47,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-15 20:14:47,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:47,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-15 20:14:47,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:47,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 20:14:47,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:47,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-15 20:14:47,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:47,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-15 20:14:47,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:47,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-15 20:14:47,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:47,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-15 20:14:47,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:47,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-15 20:14:47,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:47,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-15 20:14:47,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:47,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-15 20:14:47,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:47,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-15 20:14:47,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:47,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-15 20:14:47,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:47,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-15 20:14:47,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:47,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-12-15 20:14:47,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:47,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-12-15 20:14:47,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:47,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-15 20:14:47,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:47,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-12-15 20:14:47,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:47,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-15 20:14:47,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:47,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 63 proven. 21 refuted. 0 times theorem prover too weak. 1540 trivial. 0 not checked. [2023-12-15 20:14:47,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:14:47,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166208894] [2023-12-15 20:14:47,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166208894] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 20:14:47,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412375397] [2023-12-15 20:14:47,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:14:47,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:14:47,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:14:47,438 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 20:14:47,441 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 20:14:47,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:47,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-15 20:14:47,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:14:47,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 658 proven. 21 refuted. 0 times theorem prover too weak. 945 trivial. 0 not checked. [2023-12-15 20:14:47,925 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:14:48,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412375397] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 20:14:48,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 20:14:48,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 17 [2023-12-15 20:14:48,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366428086] [2023-12-15 20:14:48,209 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 20:14:48,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-15 20:14:48,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:14:48,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-15 20:14:48,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2023-12-15 20:14:48,210 INFO L87 Difference]: Start difference. First operand 2612 states and 4063 transitions. Second operand has 17 states, 17 states have (on average 5.647058823529412) internal successors, (96), 17 states have internal predecessors, (96), 4 states have call successors, (58), 3 states have call predecessors, (58), 5 states have return successors, (58), 4 states have call predecessors, (58), 4 states have call successors, (58) [2023-12-15 20:14:51,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:14:51,670 INFO L93 Difference]: Finished difference Result 9956 states and 14928 transitions. [2023-12-15 20:14:51,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-15 20:14:51,671 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.647058823529412) internal successors, (96), 17 states have internal predecessors, (96), 4 states have call successors, (58), 3 states have call predecessors, (58), 5 states have return successors, (58), 4 states have call predecessors, (58), 4 states have call successors, (58) Word has length 189 [2023-12-15 20:14:51,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:14:51,697 INFO L225 Difference]: With dead ends: 9956 [2023-12-15 20:14:51,697 INFO L226 Difference]: Without dead ends: 7379 [2023-12-15 20:14:51,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 801 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=857, Invalid=2565, Unknown=0, NotChecked=0, Total=3422 [2023-12-15 20:14:51,703 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 821 mSDsluCounter, 1383 mSDsCounter, 0 mSdLazyCounter, 2003 mSolverCounterSat, 515 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 1611 SdHoareTripleChecker+Invalid, 2518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 515 IncrementalHoareTripleChecker+Valid, 2003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-15 20:14:51,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [822 Valid, 1611 Invalid, 2518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [515 Valid, 2003 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-15 20:14:51,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7379 states. [2023-12-15 20:14:52,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7379 to 5030. [2023-12-15 20:14:52,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5030 states, 3656 states have (on average 1.4885120350109409) internal successors, (5442), 3715 states have internal predecessors, (5442), 1145 states have call successors, (1145), 228 states have call predecessors, (1145), 228 states have return successors, (1145), 1086 states have call predecessors, (1145), 1145 states have call successors, (1145) [2023-12-15 20:14:52,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5030 states to 5030 states and 7732 transitions. [2023-12-15 20:14:52,299 INFO L78 Accepts]: Start accepts. Automaton has 5030 states and 7732 transitions. Word has length 189 [2023-12-15 20:14:52,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:14:52,299 INFO L495 AbstractCegarLoop]: Abstraction has 5030 states and 7732 transitions. [2023-12-15 20:14:52,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.647058823529412) internal successors, (96), 17 states have internal predecessors, (96), 4 states have call successors, (58), 3 states have call predecessors, (58), 5 states have return successors, (58), 4 states have call predecessors, (58), 4 states have call successors, (58) [2023-12-15 20:14:52,299 INFO L276 IsEmpty]: Start isEmpty. Operand 5030 states and 7732 transitions. [2023-12-15 20:14:52,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-12-15 20:14:52,301 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:14:52,301 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:14:52,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 20:14:52,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:14:52,509 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:14:52,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:14:52,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1992084539, now seen corresponding path program 1 times [2023-12-15 20:14:52,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:14:52,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624553657] [2023-12-15 20:14:52,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:14:52,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:14:52,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:53,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 20:14:53,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:53,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 20:14:53,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:53,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 20:14:53,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:53,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-15 20:14:53,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:53,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-15 20:14:53,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:53,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 20:14:53,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:53,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 20:14:53,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:53,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 20:14:53,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:53,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 20:14:53,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:53,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-15 20:14:53,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:53,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-15 20:14:53,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:53,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-15 20:14:53,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:53,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-15 20:14:53,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:53,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 20:14:53,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:53,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-15 20:14:53,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:53,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-15 20:14:53,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:53,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-15 20:14:53,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:53,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-15 20:14:53,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:53,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-15 20:14:53,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:53,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-15 20:14:53,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:53,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-15 20:14:53,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:53,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-15 20:14:53,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:53,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-15 20:14:53,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:53,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-15 20:14:53,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:53,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-12-15 20:14:53,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:53,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-12-15 20:14:53,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:53,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-15 20:14:53,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:53,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-12-15 20:14:53,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:53,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-15 20:14:53,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:53,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 81 proven. 219 refuted. 0 times theorem prover too weak. 1324 trivial. 0 not checked. [2023-12-15 20:14:53,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:14:53,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624553657] [2023-12-15 20:14:53,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624553657] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 20:14:53,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215490558] [2023-12-15 20:14:53,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:14:53,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:14:53,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:14:53,889 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:14:53,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 20:14:54,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:54,055 INFO L262 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-15 20:14:54,058 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:14:56,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 1073 proven. 237 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2023-12-15 20:14:56,698 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:15:00,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 123 proven. 267 refuted. 0 times theorem prover too weak. 1234 trivial. 0 not checked. [2023-12-15 20:15:00,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215490558] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:15:00,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 20:15:00,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 21, 24] total 55 [2023-12-15 20:15:00,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904259012] [2023-12-15 20:15:00,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 20:15:00,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2023-12-15 20:15:00,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:15:00,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2023-12-15 20:15:00,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=547, Invalid=2423, Unknown=0, NotChecked=0, Total=2970 [2023-12-15 20:15:00,132 INFO L87 Difference]: Start difference. First operand 5030 states and 7732 transitions. Second operand has 55 states, 53 states have (on average 3.056603773584906) internal successors, (162), 53 states have internal predecessors, (162), 16 states have call successors, (87), 7 states have call predecessors, (87), 16 states have return successors, (87), 15 states have call predecessors, (87), 16 states have call successors, (87) Received shutdown request... [2023-12-15 20:15:30,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2023-12-15 20:15:30,868 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 20:15:30,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 416 SyntacticMatches, 1 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6552 ImplicationChecksByTransitivity, 26.7s TimeCoverageRelationStatistics Valid=5165, Invalid=18396, Unknown=1, NotChecked=0, Total=23562 [2023-12-15 20:15:30,871 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 2121 mSDsluCounter, 1203 mSDsCounter, 0 mSdLazyCounter, 1847 mSolverCounterSat, 412 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2123 SdHoareTripleChecker+Valid, 1321 SdHoareTripleChecker+Invalid, 2259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 412 IncrementalHoareTripleChecker+Valid, 1847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-12-15 20:15:30,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2123 Valid, 1321 Invalid, 2259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [412 Valid, 1847 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-12-15 20:15:30,872 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 20:15:30,874 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 20:15:30,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 20:15:31,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:15:31,079 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (5030states) and FLOYD_HOARE automaton (currently 111 states, 55 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 154 known predicates. [2023-12-15 20:15:31,082 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:15:31,084 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 20:15:31,087 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 08:15:31 BoogieIcfgContainer [2023-12-15 20:15:31,087 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 20:15:31,088 INFO L158 Benchmark]: Toolchain (without parser) took 63394.66ms. Allocated memory was 177.2MB in the beginning and 956.3MB in the end (delta: 779.1MB). Free memory was 121.8MB in the beginning and 833.9MB in the end (delta: -712.1MB). Peak memory consumption was 67.3MB. Max. memory is 8.0GB. [2023-12-15 20:15:31,088 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 177.2MB. Free memory is still 125.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 20:15:31,088 INFO L158 Benchmark]: CACSL2BoogieTranslator took 341.63ms. Allocated memory is still 177.2MB. Free memory was 121.5MB in the beginning and 106.0MB in the end (delta: 15.5MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-15 20:15:31,088 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.66ms. Allocated memory is still 177.2MB. Free memory was 106.0MB in the beginning and 102.1MB in the end (delta: 3.9MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-15 20:15:31,089 INFO L158 Benchmark]: Boogie Preprocessor took 75.20ms. Allocated memory is still 177.2MB. Free memory was 102.1MB in the beginning and 96.3MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2023-12-15 20:15:31,089 INFO L158 Benchmark]: RCFGBuilder took 566.94ms. Allocated memory is still 177.2MB. Free memory was 96.0MB in the beginning and 118.8MB in the end (delta: -22.8MB). Peak memory consumption was 10.6MB. Max. memory is 8.0GB. [2023-12-15 20:15:31,089 INFO L158 Benchmark]: TraceAbstraction took 62351.96ms. Allocated memory was 177.2MB in the beginning and 956.3MB in the end (delta: 779.1MB). Free memory was 118.3MB in the beginning and 833.9MB in the end (delta: -715.6MB). Peak memory consumption was 63.0MB. Max. memory is 8.0GB. [2023-12-15 20:15:31,090 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 177.2MB. Free memory is still 125.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 341.63ms. Allocated memory is still 177.2MB. Free memory was 121.5MB in the beginning and 106.0MB in the end (delta: 15.5MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 53.66ms. Allocated memory is still 177.2MB. Free memory was 106.0MB in the beginning and 102.1MB in the end (delta: 3.9MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 75.20ms. Allocated memory is still 177.2MB. Free memory was 102.1MB in the beginning and 96.3MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * RCFGBuilder took 566.94ms. Allocated memory is still 177.2MB. Free memory was 96.0MB in the beginning and 118.8MB in the end (delta: -22.8MB). Peak memory consumption was 10.6MB. Max. memory is 8.0GB. * TraceAbstraction took 62351.96ms. Allocated memory was 177.2MB in the beginning and 956.3MB in the end (delta: 779.1MB). Free memory was 118.3MB in the beginning and 833.9MB in the end (delta: -715.6MB). Peak memory consumption was 63.0MB. 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: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was constructing difference of abstraction (5030states) and FLOYD_HOARE automaton (currently 111 states, 55 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 154 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 97 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 62.3s, OverallIterations: 9, TraceHistogramMax: 29, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 45.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8331 SdHoareTripleChecker+Valid, 11.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8290 mSDsluCounter, 7507 SdHoareTripleChecker+Invalid, 10.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6036 mSDsCounter, 2682 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7902 IncrementalHoareTripleChecker+Invalid, 10584 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2682 mSolverCounterUnsat, 1471 mSDtfsCounter, 7902 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2387 GetRequests, 1923 SyntacticMatches, 3 SemanticMatches, 460 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30948 ImplicationChecksByTransitivity, 34.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5030occurred in iteration=8, InterpolantAutomatonStates: 283, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 8 MinimizatonAttempts, 5814 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 13.4s InterpolantComputationTime, 2438 NumberOfCodeBlocks, 2438 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 2986 ConstructedInterpolants, 0 QuantifiedInterpolants, 24367 SizeOfPredicates, 34 NumberOfNonLiveVariables, 1777 ConjunctsInSsa, 84 ConjunctsInUnsatCore, 16 InterpolantComputations, 5 PerfectInterpolantSequences, 24811/25984 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