/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 false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-90.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 01:50:05,880 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 01:50:05,947 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 01:50:05,950 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 01:50:05,950 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 01:50:05,982 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 01:50:05,982 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 01:50:05,983 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 01:50:05,983 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 01:50:05,987 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 01:50:05,987 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 01:50:05,988 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 01:50:05,988 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 01:50:05,989 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 01:50:05,989 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 01:50:05,989 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 01:50:05,989 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 01:50:05,989 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 01:50:05,990 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 01:50:05,990 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 01:50:05,990 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 01:50:05,990 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 01:50:05,991 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 01:50:05,991 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 01:50:05,991 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 01:50:05,991 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 01:50:05,991 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 01:50:05,991 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 01:50:05,992 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 01:50:05,992 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 01:50:05,993 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 01:50:05,993 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 01:50:05,993 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 01:50:05,993 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 01:50:05,993 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 01:50:05,993 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 01:50:05,993 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 01:50:05,993 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 01:50:05,993 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 01:50:05,993 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 01:50:05,994 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 01:50:05,994 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 01:50:05,994 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 01:50:05,994 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 01:50:06,175 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 01:50:06,188 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 01:50:06,189 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 01:50:06,190 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 01:50:06,190 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 01:50:06,191 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-90.i [2023-12-21 01:50:07,194 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 01:50:07,365 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 01:50:07,365 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-90.i [2023-12-21 01:50:07,374 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d78151623/17338e1d64d347fe8d9861908a375762/FLAG4bf93346b [2023-12-21 01:50:07,384 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d78151623/17338e1d64d347fe8d9861908a375762 [2023-12-21 01:50:07,387 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 01:50:07,388 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 01:50:07,389 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 01:50:07,389 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 01:50:07,392 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 01:50:07,392 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:50:07" (1/1) ... [2023-12-21 01:50:07,393 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@514c9ec6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:50:07, skipping insertion in model container [2023-12-21 01:50:07,393 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:50:07" (1/1) ... [2023-12-21 01:50:07,420 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 01:50:07,523 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_variablewrapping_wrapper-a_file-90.i[916,929] [2023-12-21 01:50:07,563 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 01:50:07,571 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 01:50:07,579 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_variablewrapping_wrapper-a_file-90.i[916,929] [2023-12-21 01:50:07,626 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 01:50:07,636 INFO L206 MainTranslator]: Completed translation [2023-12-21 01:50:07,637 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:50:07 WrapperNode [2023-12-21 01:50:07,637 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 01:50:07,638 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 01:50:07,638 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 01:50:07,638 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 01:50:07,650 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:50:07" (1/1) ... [2023-12-21 01:50:07,667 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:50:07" (1/1) ... [2023-12-21 01:50:07,699 INFO L138 Inliner]: procedures = 26, calls = 165, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 469 [2023-12-21 01:50:07,699 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 01:50:07,700 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 01:50:07,700 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 01:50:07,705 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 01:50:07,713 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:50:07" (1/1) ... [2023-12-21 01:50:07,713 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:50:07" (1/1) ... [2023-12-21 01:50:07,717 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:50:07" (1/1) ... [2023-12-21 01:50:07,759 INFO L175 MemorySlicer]: Split 130 memory accesses to 5 slices as follows [2, 34, 4, 55, 35]. 42 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 1, 6, 3]. The 19 writes are split as follows [0, 6, 1, 6, 6]. [2023-12-21 01:50:07,760 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:50:07" (1/1) ... [2023-12-21 01:50:07,760 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:50:07" (1/1) ... [2023-12-21 01:50:07,771 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:50:07" (1/1) ... [2023-12-21 01:50:07,783 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:50:07" (1/1) ... [2023-12-21 01:50:07,785 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:50:07" (1/1) ... [2023-12-21 01:50:07,786 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:50:07" (1/1) ... [2023-12-21 01:50:07,789 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 01:50:07,790 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 01:50:07,790 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 01:50:07,790 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 01:50:07,791 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:50:07" (1/1) ... [2023-12-21 01:50:07,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 01:50:07,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:50:07,837 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) [2023-12-21 01:50:07,858 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 [2023-12-21 01:50:07,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 01:50:07,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-21 01:50:07,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-21 01:50:07,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-21 01:50:07,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-12-21 01:50:07,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-12-21 01:50:07,866 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-21 01:50:07,866 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-21 01:50:07,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-21 01:50:07,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-12-21 01:50:07,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-12-21 01:50:07,868 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-21 01:50:07,868 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-21 01:50:07,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 01:50:07,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-21 01:50:07,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-21 01:50:07,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-21 01:50:07,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-12-21 01:50:07,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 01:50:07,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 01:50:07,968 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 01:50:07,970 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 01:50:08,309 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 01:50:08,355 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 01:50:08,355 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-21 01:50:08,356 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:50:08 BoogieIcfgContainer [2023-12-21 01:50:08,356 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 01:50:08,358 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 01:50:08,358 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 01:50:08,360 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 01:50:08,360 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 01:50:07" (1/3) ... [2023-12-21 01:50:08,361 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f2b52c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:50:08, skipping insertion in model container [2023-12-21 01:50:08,361 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:50:07" (2/3) ... [2023-12-21 01:50:08,361 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f2b52c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:50:08, skipping insertion in model container [2023-12-21 01:50:08,361 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:50:08" (3/3) ... [2023-12-21 01:50:08,362 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-a_file-90.i [2023-12-21 01:50:08,375 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 01:50:08,375 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 01:50:08,405 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 01:50:08,410 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;@659678e8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 01:50:08,410 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 01:50:08,413 INFO L276 IsEmpty]: Start isEmpty. Operand has 104 states, 81 states have (on average 1.4074074074074074) internal successors, (114), 82 states have internal predecessors, (114), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-21 01:50:08,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-21 01:50:08,422 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:50:08,423 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:50:08,423 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:50:08,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:50:08,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1750151490, now seen corresponding path program 1 times [2023-12-21 01:50:08,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:50:08,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259363841] [2023-12-21 01:50:08,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:50:08,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:50:08,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:50:08,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:50:08,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:50:08,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:50:08,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:50:08,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:50:08,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:50:08,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:50:08,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:50:08,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:50:08,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:50:08,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:50:08,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:50:08,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:50:08,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:50:08,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:50:08,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:50:08,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:50:08,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:50:08,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 01:50:08,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,810 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 01:50:08,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:50:08,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259363841] [2023-12-21 01:50:08,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259363841] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:50:08,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:50:08,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 01:50:08,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859534424] [2023-12-21 01:50:08,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:50:08,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 01:50:08,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:50:08,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 01:50:08,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 01:50:08,847 INFO L87 Difference]: Start difference. First operand has 104 states, 81 states have (on average 1.4074074074074074) internal successors, (114), 82 states have internal predecessors, (114), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 01:50:08,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:50:08,896 INFO L93 Difference]: Finished difference Result 205 states and 326 transitions. [2023-12-21 01:50:08,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 01:50:08,911 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 148 [2023-12-21 01:50:08,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:50:08,930 INFO L225 Difference]: With dead ends: 205 [2023-12-21 01:50:08,930 INFO L226 Difference]: Without dead ends: 102 [2023-12-21 01:50:08,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 01:50:08,935 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 01:50:08,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 145 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 01:50:08,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-12-21 01:50:08,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2023-12-21 01:50:08,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 80 states have (on average 1.3625) internal successors, (109), 80 states have internal predecessors, (109), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-21 01:50:08,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 149 transitions. [2023-12-21 01:50:08,976 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 149 transitions. Word has length 148 [2023-12-21 01:50:08,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:50:08,976 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 149 transitions. [2023-12-21 01:50:08,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 01:50:08,977 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 149 transitions. [2023-12-21 01:50:08,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-21 01:50:08,979 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:50:08,979 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:50:08,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 01:50:08,980 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:50:08,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:50:08,980 INFO L85 PathProgramCache]: Analyzing trace with hash -305656682, now seen corresponding path program 1 times [2023-12-21 01:50:08,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:50:08,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100248727] [2023-12-21 01:50:08,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:50:08,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:50:09,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:50:09,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:50:09,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:50:09,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:50:09,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:50:09,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:50:09,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:50:09,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:50:09,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:50:09,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:50:09,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:50:09,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:50:09,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:50:09,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:50:09,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:50:09,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:50:09,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:50:09,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:50:09,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:50:09,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 01:50:09,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,299 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 01:50:09,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:50:09,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100248727] [2023-12-21 01:50:09,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100248727] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:50:09,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:50:09,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 01:50:09,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445254705] [2023-12-21 01:50:09,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:50:09,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 01:50:09,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:50:09,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 01:50:09,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 01:50:09,305 INFO L87 Difference]: Start difference. First operand 102 states and 149 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 01:50:09,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:50:09,371 INFO L93 Difference]: Finished difference Result 231 states and 339 transitions. [2023-12-21 01:50:09,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 01:50:09,375 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 148 [2023-12-21 01:50:09,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:50:09,377 INFO L225 Difference]: With dead ends: 231 [2023-12-21 01:50:09,377 INFO L226 Difference]: Without dead ends: 130 [2023-12-21 01:50:09,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:50:09,378 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 61 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 01:50:09,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 466 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 01:50:09,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-12-21 01:50:09,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 104. [2023-12-21 01:50:09,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 82 states have (on average 1.353658536585366) internal successors, (111), 82 states have internal predecessors, (111), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-21 01:50:09,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 151 transitions. [2023-12-21 01:50:09,386 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 151 transitions. Word has length 148 [2023-12-21 01:50:09,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:50:09,387 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 151 transitions. [2023-12-21 01:50:09,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 01:50:09,387 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 151 transitions. [2023-12-21 01:50:09,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-21 01:50:09,402 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:50:09,402 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:50:09,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 01:50:09,402 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:50:09,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:50:09,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1329203845, now seen corresponding path program 1 times [2023-12-21 01:50:09,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:50:09,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826931528] [2023-12-21 01:50:09,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:50:09,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:50:09,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:50:09,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:50:09,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:50:09,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:50:09,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:50:09,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:50:09,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:50:09,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:50:09,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:50:09,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:50:09,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:50:09,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:50:09,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:50:09,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:50:09,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:50:09,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:50:09,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:50:09,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:50:09,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:50:09,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 01:50:09,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,730 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 01:50:09,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:50:09,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826931528] [2023-12-21 01:50:09,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826931528] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:50:09,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:50:09,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 01:50:09,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283977255] [2023-12-21 01:50:09,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:50:09,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 01:50:09,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:50:09,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 01:50:09,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:50:09,734 INFO L87 Difference]: Start difference. First operand 104 states and 151 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 01:50:09,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:50:09,865 INFO L93 Difference]: Finished difference Result 312 states and 453 transitions. [2023-12-21 01:50:09,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 01:50:09,866 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 150 [2023-12-21 01:50:09,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:50:09,871 INFO L225 Difference]: With dead ends: 312 [2023-12-21 01:50:09,872 INFO L226 Difference]: Without dead ends: 209 [2023-12-21 01:50:09,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:50:09,880 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 139 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:50:09,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 891 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 01:50:09,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-12-21 01:50:09,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 109. [2023-12-21 01:50:09,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 87 states have (on average 1.3448275862068966) internal successors, (117), 87 states have internal predecessors, (117), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-21 01:50:09,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 157 transitions. [2023-12-21 01:50:09,910 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 157 transitions. Word has length 150 [2023-12-21 01:50:09,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:50:09,910 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 157 transitions. [2023-12-21 01:50:09,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 01:50:09,910 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 157 transitions. [2023-12-21 01:50:09,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-21 01:50:09,912 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:50:09,912 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:50:09,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 01:50:09,912 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:50:09,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:50:09,912 INFO L85 PathProgramCache]: Analyzing trace with hash -906502019, now seen corresponding path program 1 times [2023-12-21 01:50:09,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:50:09,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762268633] [2023-12-21 01:50:09,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:50:09,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:50:09,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:10,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:50:10,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:10,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:50:10,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:10,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:50:10,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:10,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:50:10,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:10,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:50:10,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:10,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:50:10,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:10,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:50:10,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:10,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:50:10,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:10,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:50:10,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:10,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:50:10,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:10,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:50:10,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:10,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:50:10,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:10,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:50:10,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:10,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:50:10,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:10,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:50:10,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:10,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:50:10,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:10,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:50:10,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:10,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:50:10,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:10,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:50:10,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:10,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 01:50:10,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:10,330 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 01:50:10,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:50:10,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762268633] [2023-12-21 01:50:10,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762268633] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:50:10,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:50:10,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 01:50:10,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700760952] [2023-12-21 01:50:10,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:50:10,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 01:50:10,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:50:10,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 01:50:10,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:50:10,333 INFO L87 Difference]: Start difference. First operand 109 states and 157 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 01:50:10,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:50:10,556 INFO L93 Difference]: Finished difference Result 311 states and 449 transitions. [2023-12-21 01:50:10,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 01:50:10,557 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 150 [2023-12-21 01:50:10,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:50:10,559 INFO L225 Difference]: With dead ends: 311 [2023-12-21 01:50:10,559 INFO L226 Difference]: Without dead ends: 203 [2023-12-21 01:50:10,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-21 01:50:10,565 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 396 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 01:50:10,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 404 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 01:50:10,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2023-12-21 01:50:10,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 111. [2023-12-21 01:50:10,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 89 states have (on average 1.3370786516853932) internal successors, (119), 89 states have internal predecessors, (119), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-21 01:50:10,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 159 transitions. [2023-12-21 01:50:10,582 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 159 transitions. Word has length 150 [2023-12-21 01:50:10,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:50:10,583 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 159 transitions. [2023-12-21 01:50:10,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 01:50:10,583 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 159 transitions. [2023-12-21 01:50:10,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-21 01:50:10,584 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:50:10,584 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:50:10,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 01:50:10,585 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:50:10,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:50:10,585 INFO L85 PathProgramCache]: Analyzing trace with hash -576930377, now seen corresponding path program 1 times [2023-12-21 01:50:10,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:50:10,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010307247] [2023-12-21 01:50:10,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:50:10,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:50:10,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:11,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:50:11,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:11,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:50:11,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:11,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:50:11,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:11,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:50:11,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:11,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:50:11,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:11,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:50:11,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:11,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:50:11,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:11,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:50:11,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:11,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:50:11,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:11,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:50:11,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:11,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:50:11,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:11,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:50:11,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:11,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:50:11,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:11,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:50:11,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:11,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:50:11,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:11,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:50:11,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:11,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:50:11,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:11,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:50:11,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:11,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:50:11,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:11,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 01:50:11,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:11,473 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 01:50:11,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:50:11,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010307247] [2023-12-21 01:50:11,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010307247] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:50:11,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:50:11,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 01:50:11,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556579992] [2023-12-21 01:50:11,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:50:11,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 01:50:11,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:50:11,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 01:50:11,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-21 01:50:11,475 INFO L87 Difference]: Start difference. First operand 111 states and 159 transitions. Second operand has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 01:50:11,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:50:11,733 INFO L93 Difference]: Finished difference Result 245 states and 349 transitions. [2023-12-21 01:50:11,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 01:50:11,734 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 151 [2023-12-21 01:50:11,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:50:11,735 INFO L225 Difference]: With dead ends: 245 [2023-12-21 01:50:11,735 INFO L226 Difference]: Without dead ends: 135 [2023-12-21 01:50:11,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-12-21 01:50:11,737 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 203 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 01:50:11,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 733 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 01:50:11,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-12-21 01:50:11,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 118. [2023-12-21 01:50:11,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 95 states have (on average 1.3157894736842106) internal successors, (125), 95 states have internal predecessors, (125), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-21 01:50:11,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 165 transitions. [2023-12-21 01:50:11,758 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 165 transitions. Word has length 151 [2023-12-21 01:50:11,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:50:11,759 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 165 transitions. [2023-12-21 01:50:11,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 01:50:11,759 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 165 transitions. [2023-12-21 01:50:11,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-21 01:50:11,761 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:50:11,761 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:50:11,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 01:50:11,761 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:50:11,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:50:11,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1156097376, now seen corresponding path program 1 times [2023-12-21 01:50:11,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:50:11,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906307069] [2023-12-21 01:50:11,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:50:11,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:50:11,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:12,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:50:12,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:12,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:50:12,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:12,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:50:12,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:12,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:50:12,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:12,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:50:12,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:12,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:50:12,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:12,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:50:12,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:12,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:50:12,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:12,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:50:12,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:12,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:50:12,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:12,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:50:12,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:12,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:50:12,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:12,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:50:12,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:12,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:50:12,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:12,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:50:12,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:12,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:50:12,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:12,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:50:12,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:12,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:50:12,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:12,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:50:12,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:12,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 01:50:12,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:12,239 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 6 proven. 51 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-12-21 01:50:12,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:50:12,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906307069] [2023-12-21 01:50:12,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906307069] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 01:50:12,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714628308] [2023-12-21 01:50:12,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:50:12,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:50:12,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:50:12,242 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) [2023-12-21 01:50:12,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 01:50:12,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:12,386 INFO L262 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-21 01:50:12,395 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:50:12,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2023-12-21 01:50:12,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-12-21 01:50:12,755 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:50:12,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 69 [2023-12-21 01:50:12,866 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:50:12,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 101 treesize of output 47 [2023-12-21 01:50:12,943 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-12-21 01:50:12,943 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 01:50:13,185 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 01:50:13,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714628308] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-21 01:50:13,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-21 01:50:13,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7, 14] total 24 [2023-12-21 01:50:13,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002284500] [2023-12-21 01:50:13,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:50:13,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 01:50:13,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:50:13,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 01:50:13,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=492, Unknown=0, NotChecked=0, Total=552 [2023-12-21 01:50:13,187 INFO L87 Difference]: Start difference. First operand 118 states and 165 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 01:50:13,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:50:13,752 INFO L93 Difference]: Finished difference Result 396 states and 557 transitions. [2023-12-21 01:50:13,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 01:50:13,753 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 152 [2023-12-21 01:50:13,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:50:13,754 INFO L225 Difference]: With dead ends: 396 [2023-12-21 01:50:13,754 INFO L226 Difference]: Without dead ends: 279 [2023-12-21 01:50:13,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 327 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=115, Invalid=877, Unknown=0, NotChecked=0, Total=992 [2023-12-21 01:50:13,755 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 300 mSDsluCounter, 1114 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 1372 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 01:50:13,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 1372 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 01:50:13,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2023-12-21 01:50:13,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 187. [2023-12-21 01:50:13,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 151 states have (on average 1.3112582781456954) internal successors, (198), 152 states have internal predecessors, (198), 32 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-21 01:50:13,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 262 transitions. [2023-12-21 01:50:13,777 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 262 transitions. Word has length 152 [2023-12-21 01:50:13,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:50:13,778 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 262 transitions. [2023-12-21 01:50:13,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 01:50:13,778 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 262 transitions. [2023-12-21 01:50:13,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-21 01:50:13,780 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:50:13,781 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:50:13,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-21 01:50:13,986 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 [2023-12-21 01:50:13,986 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:50:13,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:50:13,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1742903390, now seen corresponding path program 1 times [2023-12-21 01:50:13,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:50:13,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500259985] [2023-12-21 01:50:13,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:50:13,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:50:14,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:14,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:50:14,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:14,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:50:14,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:14,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:50:14,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:14,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:50:14,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:14,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:50:14,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:14,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:50:14,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:14,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:50:14,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:14,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:50:14,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:14,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:50:14,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:14,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:50:14,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:14,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:50:14,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:14,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:50:14,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:14,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:50:14,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:14,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:50:14,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:14,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:50:14,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:14,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:50:14,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:14,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:50:14,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:14,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:50:14,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:14,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:50:14,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:14,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 01:50:14,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:14,716 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 01:50:14,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:50:14,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500259985] [2023-12-21 01:50:14,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500259985] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:50:14,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:50:14,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 01:50:14,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860604877] [2023-12-21 01:50:14,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:50:14,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 01:50:14,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:50:14,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 01:50:14,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:50:14,717 INFO L87 Difference]: Start difference. First operand 187 states and 262 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 01:50:14,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:50:14,881 INFO L93 Difference]: Finished difference Result 432 states and 601 transitions. [2023-12-21 01:50:14,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 01:50:14,881 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 152 [2023-12-21 01:50:14,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:50:14,884 INFO L225 Difference]: With dead ends: 432 [2023-12-21 01:50:14,884 INFO L226 Difference]: Without dead ends: 246 [2023-12-21 01:50:14,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:50:14,885 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 125 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:50:14,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 613 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 01:50:14,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2023-12-21 01:50:14,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 212. [2023-12-21 01:50:14,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 164 states have (on average 1.274390243902439) internal successors, (209), 166 states have internal predecessors, (209), 42 states have call successors, (42), 5 states have call predecessors, (42), 5 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-21 01:50:14,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 293 transitions. [2023-12-21 01:50:14,910 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 293 transitions. Word has length 152 [2023-12-21 01:50:14,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:50:14,911 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 293 transitions. [2023-12-21 01:50:14,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 01:50:14,911 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 293 transitions. [2023-12-21 01:50:14,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-21 01:50:14,912 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:50:14,912 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:50:14,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 01:50:14,912 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:50:14,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:50:14,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1550522018, now seen corresponding path program 1 times [2023-12-21 01:50:14,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:50:14,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987282684] [2023-12-21 01:50:14,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:50:14,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:50:14,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:15,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:50:15,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:15,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:50:15,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:15,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:50:15,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:15,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:50:15,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:15,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:50:15,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:15,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:50:15,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:15,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:50:15,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:15,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:50:15,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:15,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:50:15,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:15,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:50:15,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:15,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:50:15,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:15,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:50:15,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:15,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:50:15,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:15,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:50:15,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:15,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:50:15,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:15,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:50:15,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:15,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:50:15,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:15,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:50:15,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:15,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:50:15,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:15,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 01:50:15,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:15,481 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 01:50:15,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:50:15,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987282684] [2023-12-21 01:50:15,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987282684] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:50:15,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:50:15,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 01:50:15,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343342193] [2023-12-21 01:50:15,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:50:15,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 01:50:15,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:50:15,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 01:50:15,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:50:15,483 INFO L87 Difference]: Start difference. First operand 212 states and 293 transitions. Second operand has 7 states, 5 states have (on average 11.0) internal successors, (55), 7 states have internal predecessors, (55), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 3 states have call successors, (20) [2023-12-21 01:50:15,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:50:15,702 INFO L93 Difference]: Finished difference Result 488 states and 676 transitions. [2023-12-21 01:50:15,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 01:50:15,703 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 11.0) internal successors, (55), 7 states have internal predecessors, (55), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 3 states have call successors, (20) Word has length 152 [2023-12-21 01:50:15,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:50:15,704 INFO L225 Difference]: With dead ends: 488 [2023-12-21 01:50:15,704 INFO L226 Difference]: Without dead ends: 301 [2023-12-21 01:50:15,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-21 01:50:15,705 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 155 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 01:50:15,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 965 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 01:50:15,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2023-12-21 01:50:15,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 245. [2023-12-21 01:50:15,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 197 states have (on average 1.2944162436548223) internal successors, (255), 199 states have internal predecessors, (255), 42 states have call successors, (42), 5 states have call predecessors, (42), 5 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-21 01:50:15,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 339 transitions. [2023-12-21 01:50:15,732 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 339 transitions. Word has length 152 [2023-12-21 01:50:15,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:50:15,732 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 339 transitions. [2023-12-21 01:50:15,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 11.0) internal successors, (55), 7 states have internal predecessors, (55), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 3 states have call successors, (20) [2023-12-21 01:50:15,733 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 339 transitions. [2023-12-21 01:50:15,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-21 01:50:15,734 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:50:15,734 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:50:15,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 01:50:15,734 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:50:15,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:50:15,734 INFO L85 PathProgramCache]: Analyzing trace with hash 963716004, now seen corresponding path program 1 times [2023-12-21 01:50:15,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:50:15,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727057187] [2023-12-21 01:50:15,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:50:15,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:50:15,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:16,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:50:16,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:16,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:50:16,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:16,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:50:16,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:16,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:50:16,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:16,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:50:16,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:16,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:50:16,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:16,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:50:16,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:16,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:50:16,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:16,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:50:16,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:16,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:50:16,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:16,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:50:16,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:16,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:50:16,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:16,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:50:16,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:16,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:50:16,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:16,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:50:16,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:16,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:50:16,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:16,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:50:16,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:16,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:50:16,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:16,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:50:16,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:16,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 01:50:16,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:16,178 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 6 proven. 51 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-12-21 01:50:16,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:50:16,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727057187] [2023-12-21 01:50:16,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727057187] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 01:50:16,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808329611] [2023-12-21 01:50:16,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:50:16,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:50:16,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:50:16,179 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) [2023-12-21 01:50:16,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 01:50:16,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:16,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-21 01:50:16,331 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:50:16,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 47 [2023-12-21 01:50:16,413 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:50:16,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 32 [2023-12-21 01:50:16,469 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-12-21 01:50:16,469 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 01:50:16,622 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 01:50:16,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808329611] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-21 01:50:16,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-21 01:50:16,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 10] total 17 [2023-12-21 01:50:16,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577794594] [2023-12-21 01:50:16,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:50:16,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 01:50:16,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:50:16,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 01:50:16,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2023-12-21 01:50:16,624 INFO L87 Difference]: Start difference. First operand 245 states and 339 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 01:50:17,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:50:17,047 INFO L93 Difference]: Finished difference Result 576 states and 798 transitions. [2023-12-21 01:50:17,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 01:50:17,048 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 152 [2023-12-21 01:50:17,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:50:17,049 INFO L225 Difference]: With dead ends: 576 [2023-12-21 01:50:17,049 INFO L226 Difference]: Without dead ends: 332 [2023-12-21 01:50:17,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 336 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2023-12-21 01:50:17,050 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 225 mSDsluCounter, 1037 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 1276 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 01:50:17,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 1276 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 01:50:17,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2023-12-21 01:50:17,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 243. [2023-12-21 01:50:17,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 195 states have (on average 1.2923076923076924) internal successors, (252), 197 states have internal predecessors, (252), 42 states have call successors, (42), 5 states have call predecessors, (42), 5 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-21 01:50:17,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 336 transitions. [2023-12-21 01:50:17,074 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 336 transitions. Word has length 152 [2023-12-21 01:50:17,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:50:17,074 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 336 transitions. [2023-12-21 01:50:17,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 01:50:17,075 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 336 transitions. [2023-12-21 01:50:17,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-21 01:50:17,076 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:50:17,076 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:50:17,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-21 01:50:17,288 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,SelfDestructingSolverStorable8 [2023-12-21 01:50:17,288 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:50:17,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:50:17,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1738577047, now seen corresponding path program 1 times [2023-12-21 01:50:17,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:50:17,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259370091] [2023-12-21 01:50:17,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:50:17,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:50:17,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:17,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:50:17,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:17,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:50:17,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:17,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:50:17,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:17,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:50:17,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:17,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:50:17,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:17,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:50:17,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:17,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:50:17,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:17,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:50:17,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:17,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:50:17,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:17,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:50:17,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:17,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:50:17,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:17,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:50:17,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:17,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:50:17,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:17,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:50:17,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:17,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:50:17,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:17,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:50:17,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:17,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:50:17,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:17,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:50:17,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:17,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:50:17,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:17,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 01:50:17,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:17,464 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 01:50:17,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:50:17,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259370091] [2023-12-21 01:50:17,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259370091] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:50:17,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:50:17,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 01:50:17,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267100225] [2023-12-21 01:50:17,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:50:17,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 01:50:17,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:50:17,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 01:50:17,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:50:17,466 INFO L87 Difference]: Start difference. First operand 243 states and 336 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 01:50:17,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:50:17,626 INFO L93 Difference]: Finished difference Result 753 states and 1054 transitions. [2023-12-21 01:50:17,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 01:50:17,627 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 153 [2023-12-21 01:50:17,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:50:17,629 INFO L225 Difference]: With dead ends: 753 [2023-12-21 01:50:17,629 INFO L226 Difference]: Without dead ends: 511 [2023-12-21 01:50:17,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-21 01:50:17,630 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 175 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:50:17,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 611 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 01:50:17,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2023-12-21 01:50:17,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 288. [2023-12-21 01:50:17,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 240 states have (on average 1.3) internal successors, (312), 242 states have internal predecessors, (312), 42 states have call successors, (42), 5 states have call predecessors, (42), 5 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-21 01:50:17,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 396 transitions. [2023-12-21 01:50:17,654 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 396 transitions. Word has length 153 [2023-12-21 01:50:17,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:50:17,654 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 396 transitions. [2023-12-21 01:50:17,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 01:50:17,655 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 396 transitions. [2023-12-21 01:50:17,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-21 01:50:17,655 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:50:17,656 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:50:17,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 01:50:17,656 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:50:17,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:50:17,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1545272999, now seen corresponding path program 1 times [2023-12-21 01:50:17,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:50:17,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766271330] [2023-12-21 01:50:17,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:50:17,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:50:17,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:50:18,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:50:18,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:50:18,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:50:18,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:50:18,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:50:18,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:50:18,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:50:18,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:50:18,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:50:18,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:50:18,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:50:18,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:50:18,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:50:18,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:50:18,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:50:18,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:50:18,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:50:18,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:50:18,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 01:50:18,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,032 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 01:50:18,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:50:18,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766271330] [2023-12-21 01:50:18,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766271330] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:50:18,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:50:18,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 01:50:18,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004620196] [2023-12-21 01:50:18,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:50:18,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 01:50:18,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:50:18,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 01:50:18,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:50:18,033 INFO L87 Difference]: Start difference. First operand 288 states and 396 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 01:50:18,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:50:18,174 INFO L93 Difference]: Finished difference Result 867 states and 1200 transitions. [2023-12-21 01:50:18,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 01:50:18,174 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 153 [2023-12-21 01:50:18,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:50:18,176 INFO L225 Difference]: With dead ends: 867 [2023-12-21 01:50:18,177 INFO L226 Difference]: Without dead ends: 580 [2023-12-21 01:50:18,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:50:18,178 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 148 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:50:18,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 498 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 01:50:18,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2023-12-21 01:50:18,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 323. [2023-12-21 01:50:18,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 275 states have (on average 1.298181818181818) internal successors, (357), 277 states have internal predecessors, (357), 42 states have call successors, (42), 5 states have call predecessors, (42), 5 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-21 01:50:18,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 441 transitions. [2023-12-21 01:50:18,208 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 441 transitions. Word has length 153 [2023-12-21 01:50:18,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:50:18,209 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 441 transitions. [2023-12-21 01:50:18,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 01:50:18,209 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 441 transitions. [2023-12-21 01:50:18,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-21 01:50:18,210 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:50:18,210 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:50:18,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 01:50:18,211 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:50:18,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:50:18,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1036977173, now seen corresponding path program 1 times [2023-12-21 01:50:18,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:50:18,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101477161] [2023-12-21 01:50:18,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:50:18,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:50:18,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:50:18,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:50:18,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:50:18,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:50:18,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:50:18,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:50:18,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:50:18,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:50:18,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:50:18,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:50:18,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:50:18,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:50:18,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:50:18,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:50:18,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:50:18,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:50:18,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:50:18,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:50:18,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:50:18,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 01:50:18,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,503 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 01:50:18,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:50:18,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101477161] [2023-12-21 01:50:18,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101477161] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:50:18,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:50:18,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 01:50:18,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328383534] [2023-12-21 01:50:18,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:50:18,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 01:50:18,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:50:18,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 01:50:18,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:50:18,504 INFO L87 Difference]: Start difference. First operand 323 states and 441 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 01:50:18,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:50:18,669 INFO L93 Difference]: Finished difference Result 761 states and 1039 transitions. [2023-12-21 01:50:18,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 01:50:18,670 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 153 [2023-12-21 01:50:18,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:50:18,671 INFO L225 Difference]: With dead ends: 761 [2023-12-21 01:50:18,671 INFO L226 Difference]: Without dead ends: 439 [2023-12-21 01:50:18,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:50:18,673 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 135 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:50:18,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 663 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 01:50:18,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2023-12-21 01:50:18,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 270. [2023-12-21 01:50:18,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 232 states have (on average 1.2844827586206897) internal successors, (298), 233 states have internal predecessors, (298), 32 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-21 01:50:18,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 362 transitions. [2023-12-21 01:50:18,695 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 362 transitions. Word has length 153 [2023-12-21 01:50:18,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:50:18,695 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 362 transitions. [2023-12-21 01:50:18,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 01:50:18,696 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 362 transitions. [2023-12-21 01:50:18,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-21 01:50:18,698 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:50:18,698 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:50:18,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 01:50:18,698 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:50:18,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:50:18,698 INFO L85 PathProgramCache]: Analyzing trace with hash -2048094423, now seen corresponding path program 1 times [2023-12-21 01:50:18,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:50:18,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441989245] [2023-12-21 01:50:18,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:50:18,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:50:18,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:50:18,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:50:18,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:50:18,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:50:18,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:50:18,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:50:18,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:50:18,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:50:18,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:50:18,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:50:18,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:50:18,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:50:18,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:50:18,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:50:18,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:50:18,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:50:18,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:50:18,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:50:18,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:50:18,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 01:50:18,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:18,838 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 01:50:18,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:50:18,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441989245] [2023-12-21 01:50:18,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441989245] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:50:18,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:50:18,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 01:50:18,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096480242] [2023-12-21 01:50:18,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:50:18,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 01:50:18,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:50:18,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 01:50:18,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:50:18,840 INFO L87 Difference]: Start difference. First operand 270 states and 362 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 01:50:18,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:50:18,999 INFO L93 Difference]: Finished difference Result 660 states and 890 transitions. [2023-12-21 01:50:19,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 01:50:19,000 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 153 [2023-12-21 01:50:19,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:50:19,001 INFO L225 Difference]: With dead ends: 660 [2023-12-21 01:50:19,001 INFO L226 Difference]: Without dead ends: 391 [2023-12-21 01:50:19,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-21 01:50:19,002 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 125 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:50:19,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 818 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 01:50:19,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2023-12-21 01:50:19,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 307. [2023-12-21 01:50:19,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 269 states have (on average 1.2862453531598512) internal successors, (346), 270 states have internal predecessors, (346), 32 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-21 01:50:19,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 410 transitions. [2023-12-21 01:50:19,022 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 410 transitions. Word has length 153 [2023-12-21 01:50:19,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:50:19,022 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 410 transitions. [2023-12-21 01:50:19,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 01:50:19,023 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 410 transitions. [2023-12-21 01:50:19,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-21 01:50:19,024 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:50:19,024 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:50:19,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 01:50:19,024 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:50:19,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:50:19,024 INFO L85 PathProgramCache]: Analyzing trace with hash -980410223, now seen corresponding path program 1 times [2023-12-21 01:50:19,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:50:19,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032148595] [2023-12-21 01:50:19,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:50:19,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:50:19,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:21,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:50:21,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:21,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:50:21,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:21,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:50:21,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:21,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:50:21,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:21,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:50:21,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:21,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:50:21,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:21,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:50:21,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:21,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:50:21,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:21,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:50:21,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:21,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:50:21,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:21,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:50:21,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:21,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:50:21,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:21,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:50:21,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:21,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:50:21,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:21,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:50:21,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:21,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:50:21,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:21,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:50:21,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:21,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:50:21,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:21,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:50:21,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:21,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 01:50:21,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:21,268 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 01:50:21,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:50:21,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032148595] [2023-12-21 01:50:21,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032148595] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:50:21,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:50:21,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-12-21 01:50:21,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25067880] [2023-12-21 01:50:21,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:50:21,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-21 01:50:21,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:50:21,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-21 01:50:21,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-12-21 01:50:21,270 INFO L87 Difference]: Start difference. First operand 307 states and 410 transitions. Second operand has 15 states, 13 states have (on average 4.384615384615385) internal successors, (57), 15 states have internal predecessors, (57), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 3 states have call successors, (20) [2023-12-21 01:50:33,988 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 01:50:40,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:50:40,847 INFO L93 Difference]: Finished difference Result 1599 states and 2136 transitions. [2023-12-21 01:50:40,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-21 01:50:40,847 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 4.384615384615385) internal successors, (57), 15 states have internal predecessors, (57), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 3 states have call successors, (20) Word has length 154 [2023-12-21 01:50:40,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:50:40,852 INFO L225 Difference]: With dead ends: 1599 [2023-12-21 01:50:40,852 INFO L226 Difference]: Without dead ends: 1293 [2023-12-21 01:50:40,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=334, Invalid=1472, Unknown=0, NotChecked=0, Total=1806 [2023-12-21 01:50:40,854 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 746 mSDsluCounter, 2388 mSDsCounter, 0 mSdLazyCounter, 864 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 2626 SdHoareTripleChecker+Invalid, 938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-12-21 01:50:40,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [746 Valid, 2626 Invalid, 938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 864 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-12-21 01:50:40,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1293 states. [2023-12-21 01:50:40,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1293 to 689. [2023-12-21 01:50:40,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 614 states have (on average 1.289902280130293) internal successors, (792), 616 states have internal predecessors, (792), 64 states have call successors, (64), 10 states have call predecessors, (64), 10 states have return successors, (64), 62 states have call predecessors, (64), 64 states have call successors, (64) [2023-12-21 01:50:40,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 920 transitions. [2023-12-21 01:50:40,922 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 920 transitions. Word has length 154 [2023-12-21 01:50:40,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:50:40,923 INFO L495 AbstractCegarLoop]: Abstraction has 689 states and 920 transitions. [2023-12-21 01:50:40,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 4.384615384615385) internal successors, (57), 15 states have internal predecessors, (57), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 3 states have call successors, (20) [2023-12-21 01:50:40,924 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 920 transitions. [2023-12-21 01:50:40,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-21 01:50:40,925 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:50:40,925 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:50:40,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 01:50:40,925 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:50:40,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:50:40,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1554002775, now seen corresponding path program 1 times [2023-12-21 01:50:40,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:50:40,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013140275] [2023-12-21 01:50:40,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:50:40,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:50:40,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:41,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:50:41,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:41,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:50:41,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:41,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:50:41,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:41,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:50:41,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:41,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:50:41,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:41,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:50:41,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:41,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:50:41,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:41,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:50:41,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:41,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:50:41,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:41,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:50:41,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:41,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:50:41,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:41,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:50:41,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:41,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:50:41,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:41,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:50:41,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:41,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:50:41,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:41,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:50:41,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:41,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:50:41,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:41,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:50:41,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:41,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:50:41,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:41,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 01:50:41,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:41,354 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 01:50:41,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:50:41,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013140275] [2023-12-21 01:50:41,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013140275] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:50:41,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:50:41,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 01:50:41,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741216447] [2023-12-21 01:50:41,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:50:41,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 01:50:41,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:50:41,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 01:50:41,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:50:41,356 INFO L87 Difference]: Start difference. First operand 689 states and 920 transitions. Second operand has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 01:50:41,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:50:41,478 INFO L93 Difference]: Finished difference Result 1775 states and 2346 transitions. [2023-12-21 01:50:41,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 01:50:41,478 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 155 [2023-12-21 01:50:41,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:50:41,481 INFO L225 Difference]: With dead ends: 1775 [2023-12-21 01:50:41,481 INFO L226 Difference]: Without dead ends: 1087 [2023-12-21 01:50:41,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:50:41,485 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 105 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:50:41,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 531 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 01:50:41,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2023-12-21 01:50:41,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 1081. [2023-12-21 01:50:41,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1081 states, 994 states have (on average 1.2816901408450705) internal successors, (1274), 1000 states have internal predecessors, (1274), 72 states have call successors, (72), 14 states have call predecessors, (72), 14 states have return successors, (72), 66 states have call predecessors, (72), 72 states have call successors, (72) [2023-12-21 01:50:41,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 1418 transitions. [2023-12-21 01:50:41,541 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 1418 transitions. Word has length 155 [2023-12-21 01:50:41,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:50:41,542 INFO L495 AbstractCegarLoop]: Abstraction has 1081 states and 1418 transitions. [2023-12-21 01:50:41,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 01:50:41,542 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 1418 transitions. [2023-12-21 01:50:41,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-21 01:50:41,543 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:50:41,543 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:50:41,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 01:50:41,544 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:50:41,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:50:41,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1947029785, now seen corresponding path program 1 times [2023-12-21 01:50:41,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:50:41,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021780229] [2023-12-21 01:50:41,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:50:41,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:50:41,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:42,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:50:42,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:42,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:50:42,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:42,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:50:42,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:42,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:50:42,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:42,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:50:42,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:42,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:50:42,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:42,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:50:42,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:42,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:50:42,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:42,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:50:42,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:42,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:50:42,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:42,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:50:42,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:42,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:50:42,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:42,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:50:42,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:42,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:50:42,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:42,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:50:42,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:42,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:50:42,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:42,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:50:42,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:42,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:50:42,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:42,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:50:42,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:42,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 01:50:42,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:42,294 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 01:50:42,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:50:42,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021780229] [2023-12-21 01:50:42,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021780229] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:50:42,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:50:42,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 01:50:42,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101558358] [2023-12-21 01:50:42,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:50:42,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 01:50:42,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:50:42,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 01:50:42,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-21 01:50:42,296 INFO L87 Difference]: Start difference. First operand 1081 states and 1418 transitions. Second operand has 12 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 12 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 01:50:42,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:50:42,600 INFO L93 Difference]: Finished difference Result 2590 states and 3384 transitions. [2023-12-21 01:50:42,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 01:50:42,600 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 12 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 155 [2023-12-21 01:50:42,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:50:42,605 INFO L225 Difference]: With dead ends: 2590 [2023-12-21 01:50:42,605 INFO L226 Difference]: Without dead ends: 1510 [2023-12-21 01:50:42,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2023-12-21 01:50:42,607 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 227 mSDsluCounter, 1219 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 1358 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:50:42,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 1358 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 01:50:42,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1510 states. [2023-12-21 01:50:42,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1510 to 1150. [2023-12-21 01:50:42,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1150 states, 1063 states have (on average 1.2746942615239887) internal successors, (1355), 1069 states have internal predecessors, (1355), 72 states have call successors, (72), 14 states have call predecessors, (72), 14 states have return successors, (72), 66 states have call predecessors, (72), 72 states have call successors, (72) [2023-12-21 01:50:42,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 1499 transitions. [2023-12-21 01:50:42,665 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 1499 transitions. Word has length 155 [2023-12-21 01:50:42,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:50:42,665 INFO L495 AbstractCegarLoop]: Abstraction has 1150 states and 1499 transitions. [2023-12-21 01:50:42,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 12 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 01:50:42,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 1499 transitions. [2023-12-21 01:50:42,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-21 01:50:42,667 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:50:42,667 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:50:42,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 01:50:42,668 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:50:42,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:50:42,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1705467200, now seen corresponding path program 1 times [2023-12-21 01:50:42,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:50:42,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739670406] [2023-12-21 01:50:42,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:50:42,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:50:42,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:42,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:50:42,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:42,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:50:42,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:42,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:50:42,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:42,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:50:42,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:42,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:50:42,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:42,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:50:42,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:42,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:50:42,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:42,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:50:42,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:42,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:50:42,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:42,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:50:42,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:42,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:50:42,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:42,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:50:42,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:42,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:50:42,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:42,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:50:42,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:42,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:50:42,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:42,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:50:42,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:42,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:50:42,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:42,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:50:42,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:42,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:50:42,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:42,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 01:50:42,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:42,956 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 01:50:42,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:50:42,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739670406] [2023-12-21 01:50:42,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739670406] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:50:42,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:50:42,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 01:50:42,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834542414] [2023-12-21 01:50:42,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:50:42,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 01:50:42,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:50:42,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 01:50:42,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:50:42,958 INFO L87 Difference]: Start difference. First operand 1150 states and 1499 transitions. Second operand has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 01:50:43,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:50:43,120 INFO L93 Difference]: Finished difference Result 2797 states and 3653 transitions. [2023-12-21 01:50:43,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 01:50:43,121 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 155 [2023-12-21 01:50:43,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:50:43,125 INFO L225 Difference]: With dead ends: 2797 [2023-12-21 01:50:43,125 INFO L226 Difference]: Without dead ends: 1648 [2023-12-21 01:50:43,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:50:43,127 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 152 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:50:43,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 609 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 01:50:43,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1648 states. [2023-12-21 01:50:43,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1648 to 1506. [2023-12-21 01:50:43,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1388 states have (on average 1.2593659942363113) internal successors, (1748), 1399 states have internal predecessors, (1748), 98 states have call successors, (98), 19 states have call predecessors, (98), 19 states have return successors, (98), 87 states have call predecessors, (98), 98 states have call successors, (98) [2023-12-21 01:50:43,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 1944 transitions. [2023-12-21 01:50:43,229 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 1944 transitions. Word has length 155 [2023-12-21 01:50:43,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:50:43,229 INFO L495 AbstractCegarLoop]: Abstraction has 1506 states and 1944 transitions. [2023-12-21 01:50:43,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 01:50:43,229 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 1944 transitions. [2023-12-21 01:50:43,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-21 01:50:43,231 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:50:43,231 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:50:43,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 01:50:43,231 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:50:43,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:50:43,232 INFO L85 PathProgramCache]: Analyzing trace with hash -382757696, now seen corresponding path program 1 times [2023-12-21 01:50:43,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:50:43,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792441901] [2023-12-21 01:50:43,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:50:43,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:50:43,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:43,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:50:43,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:43,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:50:43,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:43,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:50:43,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:43,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:50:43,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:43,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:50:43,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:43,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:50:43,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:43,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:50:43,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:43,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:50:43,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:43,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:50:43,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:43,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:50:43,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:43,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:50:43,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:43,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:50:43,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:43,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:50:43,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:43,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:50:43,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:43,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:50:43,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:43,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:50:43,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:43,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:50:43,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:43,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:50:43,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:43,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:50:43,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:43,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 01:50:43,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:43,503 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 01:50:43,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:50:43,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792441901] [2023-12-21 01:50:43,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792441901] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:50:43,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:50:43,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 01:50:43,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864513821] [2023-12-21 01:50:43,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:50:43,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 01:50:43,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:50:43,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 01:50:43,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:50:43,505 INFO L87 Difference]: Start difference. First operand 1506 states and 1944 transitions. Second operand has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 01:50:43,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:50:43,676 INFO L93 Difference]: Finished difference Result 3061 states and 3947 transitions. [2023-12-21 01:50:43,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 01:50:43,677 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 155 [2023-12-21 01:50:43,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:50:43,681 INFO L225 Difference]: With dead ends: 3061 [2023-12-21 01:50:43,681 INFO L226 Difference]: Without dead ends: 1564 [2023-12-21 01:50:43,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:50:43,683 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 99 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:50:43,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 739 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 01:50:43,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1564 states. [2023-12-21 01:50:43,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1564 to 1386. [2023-12-21 01:50:43,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1386 states, 1295 states have (on average 1.2532818532818533) internal successors, (1623), 1301 states have internal predecessors, (1623), 72 states have call successors, (72), 18 states have call predecessors, (72), 18 states have return successors, (72), 66 states have call predecessors, (72), 72 states have call successors, (72) [2023-12-21 01:50:43,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1386 states to 1386 states and 1767 transitions. [2023-12-21 01:50:43,753 INFO L78 Accepts]: Start accepts. Automaton has 1386 states and 1767 transitions. Word has length 155 [2023-12-21 01:50:43,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:50:43,753 INFO L495 AbstractCegarLoop]: Abstraction has 1386 states and 1767 transitions. [2023-12-21 01:50:43,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 01:50:43,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1386 states and 1767 transitions. [2023-12-21 01:50:43,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-21 01:50:43,755 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:50:43,755 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:50:43,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 01:50:43,756 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:50:43,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:50:43,756 INFO L85 PathProgramCache]: Analyzing trace with hash -534222121, now seen corresponding path program 1 times [2023-12-21 01:50:43,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:50:43,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814243432] [2023-12-21 01:50:43,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:50:43,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:50:43,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:44,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:50:44,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:44,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:50:44,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:44,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:50:44,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:44,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:50:44,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:44,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:50:44,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:44,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:50:44,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:44,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:50:44,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:44,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:50:44,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:44,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:50:44,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:44,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:50:44,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:44,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:50:44,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:44,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:50:44,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:44,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:50:44,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:44,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:50:44,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:44,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:50:44,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:44,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:50:44,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:44,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:50:44,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:44,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:50:44,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:44,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:50:44,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:44,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 01:50:44,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:44,091 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 01:50:44,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:50:44,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814243432] [2023-12-21 01:50:44,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814243432] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:50:44,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:50:44,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 01:50:44,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282967694] [2023-12-21 01:50:44,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:50:44,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 01:50:44,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:50:44,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 01:50:44,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:50:44,094 INFO L87 Difference]: Start difference. First operand 1386 states and 1767 transitions. Second operand has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 01:50:44,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:50:44,246 INFO L93 Difference]: Finished difference Result 3187 states and 4058 transitions. [2023-12-21 01:50:44,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 01:50:44,247 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 155 [2023-12-21 01:50:44,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:50:44,251 INFO L225 Difference]: With dead ends: 3187 [2023-12-21 01:50:44,251 INFO L226 Difference]: Without dead ends: 1802 [2023-12-21 01:50:44,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:50:44,253 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 56 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:50:44,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 760 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 01:50:44,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1802 states. [2023-12-21 01:50:44,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1802 to 1796. [2023-12-21 01:50:44,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1796 states, 1685 states have (on average 1.2504451038575668) internal successors, (2107), 1695 states have internal predecessors, (2107), 88 states have call successors, (88), 22 states have call predecessors, (88), 22 states have return successors, (88), 78 states have call predecessors, (88), 88 states have call successors, (88) [2023-12-21 01:50:44,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1796 states to 1796 states and 2283 transitions. [2023-12-21 01:50:44,332 INFO L78 Accepts]: Start accepts. Automaton has 1796 states and 2283 transitions. Word has length 155 [2023-12-21 01:50:44,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:50:44,332 INFO L495 AbstractCegarLoop]: Abstraction has 1796 states and 2283 transitions. [2023-12-21 01:50:44,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 01:50:44,332 INFO L276 IsEmpty]: Start isEmpty. Operand 1796 states and 2283 transitions. [2023-12-21 01:50:44,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-21 01:50:44,335 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:50:44,335 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:50:44,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 01:50:44,335 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:50:44,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:50:44,336 INFO L85 PathProgramCache]: Analyzing trace with hash -927249131, now seen corresponding path program 1 times [2023-12-21 01:50:44,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:50:44,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339223664] [2023-12-21 01:50:44,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:50:44,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:50:44,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:45,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:50:45,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:45,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:50:45,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:45,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:50:45,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:45,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:50:45,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:45,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:50:45,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:45,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:50:45,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:45,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:50:45,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:45,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:50:45,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:45,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:50:45,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:45,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:50:45,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:45,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:50:45,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:45,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:50:45,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:45,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:50:45,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:45,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:50:45,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:45,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:50:45,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:45,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:50:45,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:45,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:50:45,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:45,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:50:45,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:45,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:50:45,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:45,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 01:50:45,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:45,060 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 01:50:45,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:50:45,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339223664] [2023-12-21 01:50:45,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339223664] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:50:45,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:50:45,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 01:50:45,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765995731] [2023-12-21 01:50:45,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:50:45,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 01:50:45,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:50:45,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 01:50:45,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-21 01:50:45,062 INFO L87 Difference]: Start difference. First operand 1796 states and 2283 transitions. Second operand has 12 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 12 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 01:50:45,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:50:45,400 INFO L93 Difference]: Finished difference Result 3911 states and 4983 transitions. [2023-12-21 01:50:45,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-21 01:50:45,401 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 12 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 155 [2023-12-21 01:50:45,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:50:45,406 INFO L225 Difference]: With dead ends: 3911 [2023-12-21 01:50:45,406 INFO L226 Difference]: Without dead ends: 2116 [2023-12-21 01:50:45,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506 [2023-12-21 01:50:45,408 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 309 mSDsluCounter, 1292 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 1469 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:50:45,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 1469 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 01:50:45,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2116 states. [2023-12-21 01:50:45,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2116 to 1934. [2023-12-21 01:50:45,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1934 states, 1823 states have (on average 1.2435545803620407) internal successors, (2267), 1833 states have internal predecessors, (2267), 88 states have call successors, (88), 22 states have call predecessors, (88), 22 states have return successors, (88), 78 states have call predecessors, (88), 88 states have call successors, (88) [2023-12-21 01:50:45,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 2443 transitions. [2023-12-21 01:50:45,494 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 2443 transitions. Word has length 155 [2023-12-21 01:50:45,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:50:45,494 INFO L495 AbstractCegarLoop]: Abstraction has 1934 states and 2443 transitions. [2023-12-21 01:50:45,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 12 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 01:50:45,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 2443 transitions. [2023-12-21 01:50:45,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-21 01:50:45,497 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:50:45,497 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:50:45,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 01:50:45,497 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:50:45,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:50:45,497 INFO L85 PathProgramCache]: Analyzing trace with hash -596261735, now seen corresponding path program 1 times [2023-12-21 01:50:45,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:50:45,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522280125] [2023-12-21 01:50:45,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:50:45,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:50:45,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:45,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:50:45,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:45,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:50:45,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:45,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:50:45,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:45,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:50:45,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:45,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:50:45,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:45,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:50:45,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:45,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:50:45,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:45,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:50:45,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:45,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:50:45,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:45,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:50:45,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:45,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:50:45,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:45,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:50:45,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:45,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:50:45,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:45,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:50:45,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:45,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:50:45,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:45,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:50:45,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:45,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:50:45,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:45,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:50:45,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:45,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:50:45,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:45,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 01:50:45,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:45,633 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 01:50:45,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:50:45,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522280125] [2023-12-21 01:50:45,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522280125] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:50:45,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:50:45,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 01:50:45,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147162338] [2023-12-21 01:50:45,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:50:45,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 01:50:45,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:50:45,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 01:50:45,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:50:45,638 INFO L87 Difference]: Start difference. First operand 1934 states and 2443 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 01:50:45,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:50:45,805 INFO L93 Difference]: Finished difference Result 4148 states and 5289 transitions. [2023-12-21 01:50:45,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 01:50:45,805 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 155 [2023-12-21 01:50:45,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:50:45,810 INFO L225 Difference]: With dead ends: 4148 [2023-12-21 01:50:45,810 INFO L226 Difference]: Without dead ends: 2215 [2023-12-21 01:50:45,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:50:45,813 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 134 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:50:45,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 898 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 01:50:45,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2215 states. [2023-12-21 01:50:45,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2215 to 1845. [2023-12-21 01:50:45,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1845 states, 1734 states have (on average 1.243367935409458) internal successors, (2156), 1744 states have internal predecessors, (2156), 88 states have call successors, (88), 22 states have call predecessors, (88), 22 states have return successors, (88), 78 states have call predecessors, (88), 88 states have call successors, (88) [2023-12-21 01:50:45,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1845 states to 1845 states and 2332 transitions. [2023-12-21 01:50:45,915 INFO L78 Accepts]: Start accepts. Automaton has 1845 states and 2332 transitions. Word has length 155 [2023-12-21 01:50:45,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:50:45,915 INFO L495 AbstractCegarLoop]: Abstraction has 1845 states and 2332 transitions. [2023-12-21 01:50:45,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 01:50:45,916 INFO L276 IsEmpty]: Start isEmpty. Operand 1845 states and 2332 transitions. [2023-12-21 01:50:45,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-21 01:50:45,918 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:50:45,918 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:50:45,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-21 01:50:45,918 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:50:45,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:50:45,918 INFO L85 PathProgramCache]: Analyzing trace with hash -900420616, now seen corresponding path program 1 times [2023-12-21 01:50:45,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:50:45,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093205065] [2023-12-21 01:50:45,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:50:45,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:50:45,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:46,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:50:46,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:46,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:50:46,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:46,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:50:46,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:46,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:50:46,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:46,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:50:46,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:46,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:50:46,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:46,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:50:46,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:46,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:50:46,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:46,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:50:46,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:46,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:50:46,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:46,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:50:46,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:46,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:50:46,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:46,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:50:46,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:46,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:50:46,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:46,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:50:46,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:46,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:50:46,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:46,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:50:46,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:46,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:50:46,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:46,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:50:46,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:46,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 01:50:46,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:46,417 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 01:50:46,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:50:46,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093205065] [2023-12-21 01:50:46,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093205065] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:50:46,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:50:46,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 01:50:46,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012312662] [2023-12-21 01:50:46,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:50:46,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 01:50:46,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:50:46,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 01:50:46,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-21 01:50:46,419 INFO L87 Difference]: Start difference. First operand 1845 states and 2332 transitions. Second operand has 11 states, 10 states have (on average 5.8) internal successors, (58), 11 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 01:50:46,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:50:46,800 INFO L93 Difference]: Finished difference Result 4231 states and 5361 transitions. [2023-12-21 01:50:46,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 01:50:46,801 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.8) internal successors, (58), 11 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 155 [2023-12-21 01:50:46,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:50:46,806 INFO L225 Difference]: With dead ends: 4231 [2023-12-21 01:50:46,806 INFO L226 Difference]: Without dead ends: 2387 [2023-12-21 01:50:46,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2023-12-21 01:50:46,810 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 309 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 1045 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 01:50:46,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 1045 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 01:50:46,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2387 states. [2023-12-21 01:50:46,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2387 to 815. [2023-12-21 01:50:46,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 759 states have (on average 1.2358366271409749) internal successors, (938), 764 states have internal predecessors, (938), 44 states have call successors, (44), 11 states have call predecessors, (44), 11 states have return successors, (44), 39 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-21 01:50:46,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1026 transitions. [2023-12-21 01:50:46,860 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1026 transitions. Word has length 155 [2023-12-21 01:50:46,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:50:46,860 INFO L495 AbstractCegarLoop]: Abstraction has 815 states and 1026 transitions. [2023-12-21 01:50:46,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.8) internal successors, (58), 11 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 01:50:46,860 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1026 transitions. [2023-12-21 01:50:46,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-21 01:50:46,863 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:50:46,863 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:50:46,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-21 01:50:46,863 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:50:46,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:50:46,863 INFO L85 PathProgramCache]: Analyzing trace with hash -991014282, now seen corresponding path program 1 times [2023-12-21 01:50:46,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:50:46,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431442041] [2023-12-21 01:50:46,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:50:46,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:50:46,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:46,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:50:46,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:46,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:50:46,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:46,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:50:46,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:46,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:50:46,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:46,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:50:46,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:46,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:50:46,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:46,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:50:46,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:46,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:50:46,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:46,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:50:46,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:46,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:50:46,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:46,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:50:46,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:46,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:50:46,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:46,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:50:46,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:46,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:50:46,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:46,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:50:46,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:46,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:50:46,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:46,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:50:46,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:46,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:50:46,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:46,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:50:46,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:46,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 01:50:46,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:46,985 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 01:50:46,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:50:46,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431442041] [2023-12-21 01:50:46,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431442041] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:50:46,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:50:46,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 01:50:46,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924570579] [2023-12-21 01:50:46,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:50:46,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 01:50:46,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:50:46,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 01:50:46,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 01:50:46,986 INFO L87 Difference]: Start difference. First operand 815 states and 1026 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 01:50:47,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:50:47,129 INFO L93 Difference]: Finished difference Result 2377 states and 2992 transitions. [2023-12-21 01:50:47,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 01:50:47,130 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 156 [2023-12-21 01:50:47,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:50:47,134 INFO L225 Difference]: With dead ends: 2377 [2023-12-21 01:50:47,134 INFO L226 Difference]: Without dead ends: 1563 [2023-12-21 01:50:47,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:50:47,135 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 103 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:50:47,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 390 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 01:50:47,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1563 states. [2023-12-21 01:50:47,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1563 to 1125. [2023-12-21 01:50:47,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1125 states, 1044 states have (on average 1.239463601532567) internal successors, (1294), 1049 states have internal predecessors, (1294), 64 states have call successors, (64), 16 states have call predecessors, (64), 16 states have return successors, (64), 59 states have call predecessors, (64), 64 states have call successors, (64) [2023-12-21 01:50:47,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1125 states to 1125 states and 1422 transitions. [2023-12-21 01:50:47,193 INFO L78 Accepts]: Start accepts. Automaton has 1125 states and 1422 transitions. Word has length 156 [2023-12-21 01:50:47,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:50:47,193 INFO L495 AbstractCegarLoop]: Abstraction has 1125 states and 1422 transitions. [2023-12-21 01:50:47,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 01:50:47,193 INFO L276 IsEmpty]: Start isEmpty. Operand 1125 states and 1422 transitions. [2023-12-21 01:50:47,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-21 01:50:47,194 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:50:47,194 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:50:47,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-21 01:50:47,194 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:50:47,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:50:47,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1577820296, now seen corresponding path program 1 times [2023-12-21 01:50:47,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:50:47,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65335258] [2023-12-21 01:50:47,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:50:47,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:50:47,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:47,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:50:47,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:47,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:50:47,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:47,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:50:47,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:47,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:50:47,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:47,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:50:47,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:47,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:50:47,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:47,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:50:47,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:47,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:50:47,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:47,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:50:47,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:47,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:50:47,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:47,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:50:47,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:47,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:50:47,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:47,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:50:47,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:47,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:50:47,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:47,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:50:47,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:47,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:50:47,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:47,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:50:47,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:47,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:50:47,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:47,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:50:47,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:47,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 01:50:47,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:47,665 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 01:50:47,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:50:47,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65335258] [2023-12-21 01:50:47,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65335258] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:50:47,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:50:47,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 01:50:47,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994779926] [2023-12-21 01:50:47,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:50:47,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 01:50:47,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:50:47,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 01:50:47,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 01:50:47,666 INFO L87 Difference]: Start difference. First operand 1125 states and 1422 transitions. Second operand has 9 states, 7 states have (on average 8.428571428571429) internal successors, (59), 9 states have internal predecessors, (59), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 3 states have call successors, (20) [2023-12-21 01:50:48,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:50:48,065 INFO L93 Difference]: Finished difference Result 3607 states and 4551 transitions. [2023-12-21 01:50:48,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 01:50:48,066 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 8.428571428571429) internal successors, (59), 9 states have internal predecessors, (59), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 3 states have call successors, (20) Word has length 156 [2023-12-21 01:50:48,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:50:48,075 INFO L225 Difference]: With dead ends: 3607 [2023-12-21 01:50:48,075 INFO L226 Difference]: Without dead ends: 2783 [2023-12-21 01:50:48,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2023-12-21 01:50:48,078 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 295 mSDsluCounter, 1313 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 1530 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 01:50:48,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 1530 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 01:50:48,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2783 states. [2023-12-21 01:50:48,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2783 to 1355. [2023-12-21 01:50:48,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1355 states, 1274 states have (on average 1.2401883830455258) internal successors, (1580), 1279 states have internal predecessors, (1580), 64 states have call successors, (64), 16 states have call predecessors, (64), 16 states have return successors, (64), 59 states have call predecessors, (64), 64 states have call successors, (64) [2023-12-21 01:50:48,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1355 states to 1355 states and 1708 transitions. [2023-12-21 01:50:48,142 INFO L78 Accepts]: Start accepts. Automaton has 1355 states and 1708 transitions. Word has length 156 [2023-12-21 01:50:48,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:50:48,143 INFO L495 AbstractCegarLoop]: Abstraction has 1355 states and 1708 transitions. [2023-12-21 01:50:48,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 8.428571428571429) internal successors, (59), 9 states have internal predecessors, (59), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 3 states have call successors, (20) [2023-12-21 01:50:48,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1355 states and 1708 transitions. [2023-12-21 01:50:48,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-21 01:50:48,144 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:50:48,144 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:50:48,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-21 01:50:48,145 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:50:48,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:50:48,145 INFO L85 PathProgramCache]: Analyzing trace with hash -124374938, now seen corresponding path program 1 times [2023-12-21 01:50:48,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:50:48,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053626102] [2023-12-21 01:50:48,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:50:48,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:50:48,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:48,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:50:48,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:48,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:50:48,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:48,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:50:48,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:48,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:50:48,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:48,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:50:48,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:48,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:50:48,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:48,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:50:48,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:48,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:50:48,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:48,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:50:48,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:48,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:50:48,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:48,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:50:48,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:48,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:50:48,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:48,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:50:48,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:48,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:50:48,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:48,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:50:48,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:48,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:50:48,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:48,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:50:48,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:48,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:50:48,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:48,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:50:48,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:48,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 01:50:48,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:48,336 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 01:50:48,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:50:48,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053626102] [2023-12-21 01:50:48,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053626102] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:50:48,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:50:48,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 01:50:48,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191943148] [2023-12-21 01:50:48,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:50:48,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 01:50:48,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:50:48,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 01:50:48,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:50:48,338 INFO L87 Difference]: Start difference. First operand 1355 states and 1708 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 01:50:48,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:50:48,537 INFO L93 Difference]: Finished difference Result 2615 states and 3312 transitions. [2023-12-21 01:50:48,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 01:50:48,537 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 157 [2023-12-21 01:50:48,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:50:48,541 INFO L225 Difference]: With dead ends: 2615 [2023-12-21 01:50:48,541 INFO L226 Difference]: Without dead ends: 1553 [2023-12-21 01:50:48,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-21 01:50:48,546 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 169 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 1010 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:50:48,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 1010 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 01:50:48,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1553 states. [2023-12-21 01:50:48,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1553 to 1355. [2023-12-21 01:50:48,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1355 states, 1274 states have (on average 1.227629513343799) internal successors, (1564), 1279 states have internal predecessors, (1564), 64 states have call successors, (64), 16 states have call predecessors, (64), 16 states have return successors, (64), 59 states have call predecessors, (64), 64 states have call successors, (64) [2023-12-21 01:50:48,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1355 states to 1355 states and 1692 transitions. [2023-12-21 01:50:48,611 INFO L78 Accepts]: Start accepts. Automaton has 1355 states and 1692 transitions. Word has length 157 [2023-12-21 01:50:48,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:50:48,611 INFO L495 AbstractCegarLoop]: Abstraction has 1355 states and 1692 transitions. [2023-12-21 01:50:48,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 01:50:48,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1355 states and 1692 transitions. [2023-12-21 01:50:48,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-21 01:50:48,613 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:50:48,613 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:50:48,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-21 01:50:48,614 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:50:48,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:50:48,614 INFO L85 PathProgramCache]: Analyzing trace with hash -537483444, now seen corresponding path program 1 times [2023-12-21 01:50:48,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:50:48,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604998757] [2023-12-21 01:50:48,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:50:48,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:50:48,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:49,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:50:49,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:49,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:50:49,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:49,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:50:49,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:49,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:50:49,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:49,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:50:49,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:49,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:50:49,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:49,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:50:49,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:49,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:50:49,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:49,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:50:49,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:49,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:50:49,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:49,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:50:49,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:49,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:50:49,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:49,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:50:49,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:49,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:50:49,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:49,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:50:49,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:49,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:50:49,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:49,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:50:49,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:49,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:50:49,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:49,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:50:49,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:49,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 01:50:49,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:49,406 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 01:50:49,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:50:49,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604998757] [2023-12-21 01:50:49,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604998757] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:50:49,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:50:49,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-21 01:50:49,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034745323] [2023-12-21 01:50:49,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:50:49,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 01:50:49,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:50:49,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 01:50:49,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2023-12-21 01:50:49,408 INFO L87 Difference]: Start difference. First operand 1355 states and 1692 transitions. Second operand has 16 states, 16 states have (on average 3.75) internal successors, (60), 16 states have internal predecessors, (60), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-12-21 01:50:50,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:50:50,370 INFO L93 Difference]: Finished difference Result 4070 states and 5070 transitions. [2023-12-21 01:50:50,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-21 01:50:50,370 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.75) internal successors, (60), 16 states have internal predecessors, (60), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 157 [2023-12-21 01:50:50,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:50:50,379 INFO L225 Difference]: With dead ends: 4070 [2023-12-21 01:50:50,380 INFO L226 Difference]: Without dead ends: 3026 [2023-12-21 01:50:50,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2023-12-21 01:50:50,382 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 1059 mSDsluCounter, 1213 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1059 SdHoareTripleChecker+Valid, 1357 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 01:50:50,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1059 Valid, 1357 Invalid, 1223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 993 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 01:50:50,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3026 states. [2023-12-21 01:50:50,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3026 to 2140. [2023-12-21 01:50:50,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2140 states, 1955 states have (on average 1.207161125319693) internal successors, (2360), 1971 states have internal predecessors, (2360), 146 states have call successors, (146), 38 states have call predecessors, (146), 38 states have return successors, (146), 130 states have call predecessors, (146), 146 states have call successors, (146) [2023-12-21 01:50:50,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2140 states to 2140 states and 2652 transitions. [2023-12-21 01:50:50,528 INFO L78 Accepts]: Start accepts. Automaton has 2140 states and 2652 transitions. Word has length 157 [2023-12-21 01:50:50,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:50:50,529 INFO L495 AbstractCegarLoop]: Abstraction has 2140 states and 2652 transitions. [2023-12-21 01:50:50,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.75) internal successors, (60), 16 states have internal predecessors, (60), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-12-21 01:50:50,529 INFO L276 IsEmpty]: Start isEmpty. Operand 2140 states and 2652 transitions. [2023-12-21 01:50:50,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-21 01:50:50,531 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:50:50,531 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:50:50,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-21 01:50:50,531 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:50:50,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:50:50,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1237523918, now seen corresponding path program 1 times [2023-12-21 01:50:50,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:50:50,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833354220] [2023-12-21 01:50:50,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:50:50,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:50:50,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:50,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:50:50,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:50,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:50:50,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:50,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:50:50,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:50,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:50:50,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:50,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:50:50,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:50,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:50:50,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:50,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:50:50,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:50,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:50:50,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:50,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:50:50,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:50,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:50:50,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:50,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:50:50,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:50,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:50:50,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:50,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:50:50,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:50,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:50:50,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:50,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:50:50,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:50,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:50:50,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:50,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:50:50,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:50,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:50:50,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:50,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:50:50,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:50,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 01:50:50,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:50,991 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 01:50:50,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:50:50,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833354220] [2023-12-21 01:50:50,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833354220] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:50:50,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:50:50,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 01:50:50,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942197503] [2023-12-21 01:50:50,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:50:50,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 01:50:50,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:50:50,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 01:50:50,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-12-21 01:50:50,993 INFO L87 Difference]: Start difference. First operand 2140 states and 2652 transitions. Second operand has 11 states, 10 states have (on average 6.0) internal successors, (60), 11 states have internal predecessors, (60), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 01:50:51,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:50:51,494 INFO L93 Difference]: Finished difference Result 4697 states and 5830 transitions. [2023-12-21 01:50:51,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-21 01:50:51,494 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.0) internal successors, (60), 11 states have internal predecessors, (60), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 157 [2023-12-21 01:50:51,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:50:51,503 INFO L225 Difference]: With dead ends: 4697 [2023-12-21 01:50:51,504 INFO L226 Difference]: Without dead ends: 2868 [2023-12-21 01:50:51,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2023-12-21 01:50:51,507 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 345 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 01:50:51,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 921 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 01:50:51,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2868 states. [2023-12-21 01:50:51,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2868 to 2480. [2023-12-21 01:50:51,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2480 states, 2256 states have (on average 1.1972517730496455) internal successors, (2701), 2278 states have internal predecessors, (2701), 174 states have call successors, (174), 49 states have call predecessors, (174), 49 states have return successors, (174), 152 states have call predecessors, (174), 174 states have call successors, (174) [2023-12-21 01:50:51,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2480 states to 2480 states and 3049 transitions. [2023-12-21 01:50:51,742 INFO L78 Accepts]: Start accepts. Automaton has 2480 states and 3049 transitions. Word has length 157 [2023-12-21 01:50:51,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:50:51,742 INFO L495 AbstractCegarLoop]: Abstraction has 2480 states and 3049 transitions. [2023-12-21 01:50:51,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.0) internal successors, (60), 11 states have internal predecessors, (60), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 01:50:51,742 INFO L276 IsEmpty]: Start isEmpty. Operand 2480 states and 3049 transitions. [2023-12-21 01:50:51,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-21 01:50:51,744 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:50:51,744 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:50:51,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-21 01:50:51,745 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:50:51,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:50:51,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1026875038, now seen corresponding path program 1 times [2023-12-21 01:50:51,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:50:51,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093954975] [2023-12-21 01:50:51,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:50:51,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:50:51,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:51,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:50:51,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:51,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:50:51,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:51,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:50:51,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:51,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:50:51,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:51,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:50:51,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:51,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:50:51,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:51,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:50:51,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:51,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:50:51,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:51,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:50:51,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:51,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:50:51,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:51,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:50:51,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:51,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:50:51,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:51,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:50:51,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:51,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:50:51,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:51,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:50:51,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:51,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:50:51,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:51,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:50:51,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:51,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:50:51,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:51,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:50:51,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:51,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 01:50:51,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:51,945 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 01:50:51,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:50:51,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093954975] [2023-12-21 01:50:51,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093954975] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:50:51,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:50:51,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 01:50:51,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554032675] [2023-12-21 01:50:51,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:50:51,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 01:50:51,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:50:51,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 01:50:51,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:50:51,947 INFO L87 Difference]: Start difference. First operand 2480 states and 3049 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 01:50:52,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:50:52,385 INFO L93 Difference]: Finished difference Result 5132 states and 6335 transitions. [2023-12-21 01:50:52,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 01:50:52,386 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 157 [2023-12-21 01:50:52,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:50:52,389 INFO L225 Difference]: With dead ends: 5132 [2023-12-21 01:50:52,389 INFO L226 Difference]: Without dead ends: 2913 [2023-12-21 01:50:52,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:50:52,392 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 311 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 01:50:52,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 637 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 01:50:52,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2913 states. [2023-12-21 01:50:52,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2913 to 2700. [2023-12-21 01:50:52,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2700 states, 2424 states have (on average 1.171204620462046) internal successors, (2839), 2454 states have internal predecessors, (2839), 214 states have call successors, (214), 61 states have call predecessors, (214), 61 states have return successors, (214), 184 states have call predecessors, (214), 214 states have call successors, (214) [2023-12-21 01:50:52,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2700 states to 2700 states and 3267 transitions. [2023-12-21 01:50:52,610 INFO L78 Accepts]: Start accepts. Automaton has 2700 states and 3267 transitions. Word has length 157 [2023-12-21 01:50:52,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:50:52,610 INFO L495 AbstractCegarLoop]: Abstraction has 2700 states and 3267 transitions. [2023-12-21 01:50:52,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 01:50:52,610 INFO L276 IsEmpty]: Start isEmpty. Operand 2700 states and 3267 transitions. [2023-12-21 01:50:52,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-21 01:50:52,612 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:50:52,612 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:50:52,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-21 01:50:52,613 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:50:52,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:50:52,613 INFO L85 PathProgramCache]: Analyzing trace with hash -396934834, now seen corresponding path program 1 times [2023-12-21 01:50:52,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:50:52,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787755248] [2023-12-21 01:50:52,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:50:52,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:50:52,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:52,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:50:52,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:52,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:50:52,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:52,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:50:52,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:52,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:50:52,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:52,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:50:52,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:52,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:50:52,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:52,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:50:52,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:52,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:50:52,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:52,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:50:52,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:52,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:50:52,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:52,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:50:52,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:52,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:50:52,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:52,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:50:52,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:52,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:50:52,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:52,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:50:52,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:52,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:50:52,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:52,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:50:52,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:52,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:50:52,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:52,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:50:52,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:52,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 01:50:52,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:52,988 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 01:50:52,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:50:52,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787755248] [2023-12-21 01:50:52,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787755248] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:50:52,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:50:52,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 01:50:52,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190768686] [2023-12-21 01:50:52,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:50:52,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 01:50:52,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:50:52,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 01:50:52,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-21 01:50:52,989 INFO L87 Difference]: Start difference. First operand 2700 states and 3267 transitions. Second operand has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 01:50:53,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:50:53,580 INFO L93 Difference]: Finished difference Result 4882 states and 5962 transitions. [2023-12-21 01:50:53,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 01:50:53,580 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 157 [2023-12-21 01:50:53,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:50:53,586 INFO L225 Difference]: With dead ends: 4882 [2023-12-21 01:50:53,586 INFO L226 Difference]: Without dead ends: 3164 [2023-12-21 01:50:53,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2023-12-21 01:50:53,588 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 243 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 01:50:53,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 1306 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 01:50:53,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3164 states. [2023-12-21 01:50:53,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3164 to 2810. [2023-12-21 01:50:53,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2810 states, 2532 states have (on average 1.164691943127962) internal successors, (2949), 2562 states have internal predecessors, (2949), 214 states have call successors, (214), 63 states have call predecessors, (214), 63 states have return successors, (214), 184 states have call predecessors, (214), 214 states have call successors, (214) [2023-12-21 01:50:53,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2810 states to 2810 states and 3377 transitions. [2023-12-21 01:50:53,839 INFO L78 Accepts]: Start accepts. Automaton has 2810 states and 3377 transitions. Word has length 157 [2023-12-21 01:50:53,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:50:53,839 INFO L495 AbstractCegarLoop]: Abstraction has 2810 states and 3377 transitions. [2023-12-21 01:50:53,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 01:50:53,839 INFO L276 IsEmpty]: Start isEmpty. Operand 2810 states and 3377 transitions. [2023-12-21 01:50:53,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-21 01:50:53,841 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:50:53,841 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:50:53,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-21 01:50:53,842 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:50:53,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:50:53,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1378072528, now seen corresponding path program 1 times [2023-12-21 01:50:53,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:50:53,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939251238] [2023-12-21 01:50:53,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:50:53,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:50:53,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:54,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:50:54,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:54,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:50:54,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:54,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:50:54,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:54,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:50:54,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:54,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:50:54,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:54,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:50:54,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:54,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:50:54,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:54,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:50:54,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:54,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:50:54,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:54,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:50:54,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:54,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:50:54,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:54,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:50:54,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:54,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:50:54,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:54,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:50:54,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:54,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:50:54,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:54,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:50:54,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:54,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:50:54,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:54,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:50:54,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:54,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:50:54,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:54,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 01:50:54,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:54,649 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 01:50:54,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:50:54,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939251238] [2023-12-21 01:50:54,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939251238] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:50:54,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:50:54,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 01:50:54,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163536502] [2023-12-21 01:50:54,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:50:54,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 01:50:54,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:50:54,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 01:50:54,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-12-21 01:50:54,652 INFO L87 Difference]: Start difference. First operand 2810 states and 3377 transitions. Second operand has 11 states, 10 states have (on average 6.0) internal successors, (60), 11 states have internal predecessors, (60), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2023-12-21 01:50:55,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:50:55,889 INFO L93 Difference]: Finished difference Result 6038 states and 7302 transitions. [2023-12-21 01:50:55,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 01:50:55,889 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.0) internal successors, (60), 11 states have internal predecessors, (60), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) Word has length 157 [2023-12-21 01:50:55,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:50:55,895 INFO L225 Difference]: With dead ends: 6038 [2023-12-21 01:50:55,895 INFO L226 Difference]: Without dead ends: 4266 [2023-12-21 01:50:55,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2023-12-21 01:50:55,898 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 216 mSDsluCounter, 1067 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 1243 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 01:50:55,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 1243 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 01:50:55,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4266 states. [2023-12-21 01:50:56,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4266 to 3694. [2023-12-21 01:50:56,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3694 states, 3416 states have (on average 1.160128805620609) internal successors, (3963), 3446 states have internal predecessors, (3963), 214 states have call successors, (214), 63 states have call predecessors, (214), 63 states have return successors, (214), 184 states have call predecessors, (214), 214 states have call successors, (214) [2023-12-21 01:50:56,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3694 states to 3694 states and 4391 transitions. [2023-12-21 01:50:56,159 INFO L78 Accepts]: Start accepts. Automaton has 3694 states and 4391 transitions. Word has length 157 [2023-12-21 01:50:56,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:50:56,159 INFO L495 AbstractCegarLoop]: Abstraction has 3694 states and 4391 transitions. [2023-12-21 01:50:56,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.0) internal successors, (60), 11 states have internal predecessors, (60), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2023-12-21 01:50:56,159 INFO L276 IsEmpty]: Start isEmpty. Operand 3694 states and 4391 transitions. [2023-12-21 01:50:56,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-21 01:50:56,162 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:50:56,162 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:50:56,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-21 01:50:56,162 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:50:56,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:50:56,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1803870151, now seen corresponding path program 1 times [2023-12-21 01:50:56,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:50:56,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226269866] [2023-12-21 01:50:56,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:50:56,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:50:56,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:56,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:50:56,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:56,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:50:56,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:56,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:50:56,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:56,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:50:56,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:56,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:50:56,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:56,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:50:56,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:56,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:50:56,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:56,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:50:56,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:56,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:50:56,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:56,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:50:56,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:56,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:50:56,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:56,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:50:56,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:56,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:50:56,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:56,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:50:56,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:56,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:50:56,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:56,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:50:56,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:56,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:50:56,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:56,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:50:56,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:56,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:50:56,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:56,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 01:50:56,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:56,997 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 01:50:56,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:50:56,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226269866] [2023-12-21 01:50:56,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226269866] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:50:56,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:50:56,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-12-21 01:50:56,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093843978] [2023-12-21 01:50:56,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:50:56,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-21 01:50:56,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:50:56,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-21 01:50:56,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2023-12-21 01:50:56,998 INFO L87 Difference]: Start difference. First operand 3694 states and 4391 transitions. Second operand has 18 states, 16 states have (on average 3.75) internal successors, (60), 18 states have internal predecessors, (60), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 3 states have call successors, (20) [2023-12-21 01:50:59,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:50:59,982 INFO L93 Difference]: Finished difference Result 15443 states and 18462 transitions. [2023-12-21 01:50:59,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-21 01:50:59,984 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 3.75) internal successors, (60), 18 states have internal predecessors, (60), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 3 states have call successors, (20) Word has length 157 [2023-12-21 01:50:59,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:51:00,003 INFO L225 Difference]: With dead ends: 15443 [2023-12-21 01:51:00,003 INFO L226 Difference]: Without dead ends: 13181 [2023-12-21 01:51:00,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=484, Invalid=1966, Unknown=0, NotChecked=0, Total=2450 [2023-12-21 01:51:00,009 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 934 mSDsluCounter, 2757 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 294 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 3001 SdHoareTripleChecker+Invalid, 1366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 294 IncrementalHoareTripleChecker+Valid, 1072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:51:00,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [934 Valid, 3001 Invalid, 1366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [294 Valid, 1072 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-21 01:51:00,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13181 states. [2023-12-21 01:51:00,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13181 to 8197. [2023-12-21 01:51:00,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8197 states, 7668 states have (on average 1.1644496609285342) internal successors, (8929), 7728 states have internal predecessors, (8929), 408 states have call successors, (408), 120 states have call predecessors, (408), 120 states have return successors, (408), 348 states have call predecessors, (408), 408 states have call successors, (408) [2023-12-21 01:51:00,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8197 states to 8197 states and 9745 transitions. [2023-12-21 01:51:00,620 INFO L78 Accepts]: Start accepts. Automaton has 8197 states and 9745 transitions. Word has length 157 [2023-12-21 01:51:00,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:51:00,620 INFO L495 AbstractCegarLoop]: Abstraction has 8197 states and 9745 transitions. [2023-12-21 01:51:00,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 3.75) internal successors, (60), 18 states have internal predecessors, (60), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 3 states have call successors, (20) [2023-12-21 01:51:00,621 INFO L276 IsEmpty]: Start isEmpty. Operand 8197 states and 9745 transitions. [2023-12-21 01:51:00,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-21 01:51:00,628 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:51:00,629 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:51:00,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-21 01:51:00,629 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:51:00,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:51:00,629 INFO L85 PathProgramCache]: Analyzing trace with hash 919333644, now seen corresponding path program 1 times [2023-12-21 01:51:00,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:51:00,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899154696] [2023-12-21 01:51:00,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:51:00,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:51:00,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:01,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:51:01,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:01,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:51:01,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:01,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:51:01,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:01,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:51:01,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:01,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:51:01,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:01,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:51:01,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:01,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:51:01,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:01,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:51:01,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:01,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:51:01,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:01,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:51:01,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:01,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:51:01,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:01,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:51:01,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:01,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:51:01,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:01,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:51:01,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:01,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:51:01,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:01,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:51:01,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:01,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:51:01,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:01,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:51:01,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:01,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:51:01,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:01,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 01:51:01,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:01,534 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 01:51:01,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:51:01,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899154696] [2023-12-21 01:51:01,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899154696] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:51:01,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:51:01,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-12-21 01:51:01,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793276981] [2023-12-21 01:51:01,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:51:01,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-21 01:51:01,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:51:01,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-21 01:51:01,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2023-12-21 01:51:01,535 INFO L87 Difference]: Start difference. First operand 8197 states and 9745 transitions. Second operand has 17 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 17 states have internal predecessors, (60), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-12-21 01:51:03,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:51:03,550 INFO L93 Difference]: Finished difference Result 19767 states and 23674 transitions. [2023-12-21 01:51:03,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-21 01:51:03,550 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 17 states have internal predecessors, (60), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 157 [2023-12-21 01:51:03,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:51:03,571 INFO L225 Difference]: With dead ends: 19767 [2023-12-21 01:51:03,572 INFO L226 Difference]: Without dead ends: 14789 [2023-12-21 01:51:03,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=333, Invalid=1149, Unknown=0, NotChecked=0, Total=1482 [2023-12-21 01:51:03,580 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 791 mSDsluCounter, 1260 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 337 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 1394 SdHoareTripleChecker+Invalid, 1343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 337 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 01:51:03,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [791 Valid, 1394 Invalid, 1343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [337 Valid, 1006 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 01:51:03,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14789 states. [2023-12-21 01:51:04,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14789 to 10409. [2023-12-21 01:51:04,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10409 states, 9643 states have (on average 1.1616716789380899) internal successors, (11202), 9733 states have internal predecessors, (11202), 592 states have call successors, (592), 173 states have call predecessors, (592), 173 states have return successors, (592), 502 states have call predecessors, (592), 592 states have call successors, (592) [2023-12-21 01:51:04,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10409 states to 10409 states and 12386 transitions. [2023-12-21 01:51:04,498 INFO L78 Accepts]: Start accepts. Automaton has 10409 states and 12386 transitions. Word has length 157 [2023-12-21 01:51:04,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:51:04,498 INFO L495 AbstractCegarLoop]: Abstraction has 10409 states and 12386 transitions. [2023-12-21 01:51:04,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 17 states have internal predecessors, (60), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-12-21 01:51:04,499 INFO L276 IsEmpty]: Start isEmpty. Operand 10409 states and 12386 transitions. [2023-12-21 01:51:04,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-21 01:51:04,507 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:51:04,507 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:51:04,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-21 01:51:04,507 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:51:04,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:51:04,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1600626290, now seen corresponding path program 1 times [2023-12-21 01:51:04,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:51:04,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407031901] [2023-12-21 01:51:04,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:51:04,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:51:04,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:04,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:51:04,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:04,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:51:04,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:04,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:51:04,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:04,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:51:04,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:04,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:51:04,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:04,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:51:04,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:04,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:51:04,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:04,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:51:04,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:04,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:51:04,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:04,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:51:04,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:04,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:51:04,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:04,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:51:04,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:04,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:51:04,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:04,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:51:04,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:04,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:51:04,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:04,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:51:04,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:04,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:51:04,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:04,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:51:04,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:04,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:51:04,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:04,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 01:51:04,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:04,824 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 01:51:04,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:51:04,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407031901] [2023-12-21 01:51:04,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407031901] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:51:04,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:51:04,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 01:51:04,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101114002] [2023-12-21 01:51:04,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:51:04,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 01:51:04,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:51:04,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 01:51:04,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:51:04,825 INFO L87 Difference]: Start difference. First operand 10409 states and 12386 transitions. Second operand has 7 states, 6 states have (on average 10.0) internal successors, (60), 7 states have internal predecessors, (60), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 01:51:05,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:51:05,901 INFO L93 Difference]: Finished difference Result 19473 states and 23336 transitions. [2023-12-21 01:51:05,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 01:51:05,902 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.0) internal successors, (60), 7 states have internal predecessors, (60), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 157 [2023-12-21 01:51:05,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:51:05,919 INFO L225 Difference]: With dead ends: 19473 [2023-12-21 01:51:05,919 INFO L226 Difference]: Without dead ends: 11415 [2023-12-21 01:51:05,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-21 01:51:05,929 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 144 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:51:05,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 600 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 01:51:05,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11415 states. [2023-12-21 01:51:06,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11415 to 8227. [2023-12-21 01:51:06,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8227 states, 7791 states have (on average 1.1597997689641895) internal successors, (9036), 7835 states have internal predecessors, (9036), 332 states have call successors, (332), 103 states have call predecessors, (332), 103 states have return successors, (332), 288 states have call predecessors, (332), 332 states have call successors, (332) [2023-12-21 01:51:06,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8227 states to 8227 states and 9700 transitions. [2023-12-21 01:51:06,520 INFO L78 Accepts]: Start accepts. Automaton has 8227 states and 9700 transitions. Word has length 157 [2023-12-21 01:51:06,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:51:06,521 INFO L495 AbstractCegarLoop]: Abstraction has 8227 states and 9700 transitions. [2023-12-21 01:51:06,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.0) internal successors, (60), 7 states have internal predecessors, (60), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 01:51:06,521 INFO L276 IsEmpty]: Start isEmpty. Operand 8227 states and 9700 transitions. [2023-12-21 01:51:06,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-21 01:51:06,547 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:51:06,547 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:51:06,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-12-21 01:51:06,547 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:51:06,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:51:06,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1059882254, now seen corresponding path program 1 times [2023-12-21 01:51:06,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:51:06,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021578380] [2023-12-21 01:51:06,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:51:06,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:51:06,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:07,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:51:07,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:07,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:51:07,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:07,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:51:07,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:07,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:51:07,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:07,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:51:07,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:07,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:51:07,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:07,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:51:07,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:07,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:51:07,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:07,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:51:07,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:07,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:51:07,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:07,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:51:07,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:07,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:51:07,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:07,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:51:07,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:07,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:51:07,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:07,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:51:07,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:07,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:51:07,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:07,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:51:07,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:07,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:51:07,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:07,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:51:07,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:07,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 01:51:07,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:07,171 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 01:51:07,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:51:07,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021578380] [2023-12-21 01:51:07,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021578380] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:51:07,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:51:07,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 01:51:07,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248085780] [2023-12-21 01:51:07,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:51:07,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 01:51:07,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:51:07,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 01:51:07,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:51:07,173 INFO L87 Difference]: Start difference. First operand 8227 states and 9700 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 01:51:08,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:51:08,035 INFO L93 Difference]: Finished difference Result 13595 states and 16154 transitions. [2023-12-21 01:51:08,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 01:51:08,036 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 157 [2023-12-21 01:51:08,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:51:08,045 INFO L225 Difference]: With dead ends: 13595 [2023-12-21 01:51:08,046 INFO L226 Difference]: Without dead ends: 8733 [2023-12-21 01:51:08,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-21 01:51:08,051 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 96 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 01:51:08,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 811 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 01:51:08,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8733 states. [2023-12-21 01:51:08,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8733 to 7795. [2023-12-21 01:51:08,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7795 states, 7359 states have (on average 1.158853105041446) internal successors, (8528), 7403 states have internal predecessors, (8528), 332 states have call successors, (332), 103 states have call predecessors, (332), 103 states have return successors, (332), 288 states have call predecessors, (332), 332 states have call successors, (332) [2023-12-21 01:51:08,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7795 states to 7795 states and 9192 transitions. [2023-12-21 01:51:08,597 INFO L78 Accepts]: Start accepts. Automaton has 7795 states and 9192 transitions. Word has length 157 [2023-12-21 01:51:08,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:51:08,597 INFO L495 AbstractCegarLoop]: Abstraction has 7795 states and 9192 transitions. [2023-12-21 01:51:08,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 01:51:08,597 INFO L276 IsEmpty]: Start isEmpty. Operand 7795 states and 9192 transitions. [2023-12-21 01:51:08,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-21 01:51:08,602 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:51:08,602 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:51:08,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-12-21 01:51:08,603 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:51:08,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:51:08,603 INFO L85 PathProgramCache]: Analyzing trace with hash -302479244, now seen corresponding path program 1 times [2023-12-21 01:51:08,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:51:08,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446361079] [2023-12-21 01:51:08,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:51:08,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:51:08,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:08,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:51:08,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:08,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:51:08,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:08,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:51:08,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:08,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:51:08,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:08,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:51:08,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:08,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:51:08,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:08,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:51:08,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:08,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:51:08,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:08,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:51:08,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:08,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:51:08,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:08,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:51:08,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:08,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:51:08,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:08,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:51:08,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:08,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:51:08,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:08,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:51:08,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:08,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:51:08,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:08,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:51:08,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:08,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:51:08,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:08,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:51:08,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:08,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 01:51:08,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:08,753 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 01:51:08,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:51:08,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446361079] [2023-12-21 01:51:08,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446361079] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:51:08,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:51:08,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 01:51:08,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849450622] [2023-12-21 01:51:08,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:51:08,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 01:51:08,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:51:08,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 01:51:08,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:51:08,756 INFO L87 Difference]: Start difference. First operand 7795 states and 9192 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 01:51:09,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:51:09,421 INFO L93 Difference]: Finished difference Result 13835 states and 16562 transitions. [2023-12-21 01:51:09,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 01:51:09,422 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 158 [2023-12-21 01:51:09,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:51:09,431 INFO L225 Difference]: With dead ends: 13835 [2023-12-21 01:51:09,431 INFO L226 Difference]: Without dead ends: 9649 [2023-12-21 01:51:09,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-21 01:51:09,435 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 156 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:51:09,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 706 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 01:51:09,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9649 states. [2023-12-21 01:51:09,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9649 to 7955. [2023-12-21 01:51:09,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7955 states, 7519 states have (on average 1.1554728022343397) internal successors, (8688), 7563 states have internal predecessors, (8688), 332 states have call successors, (332), 103 states have call predecessors, (332), 103 states have return successors, (332), 288 states have call predecessors, (332), 332 states have call successors, (332) [2023-12-21 01:51:09,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7955 states to 7955 states and 9352 transitions. [2023-12-21 01:51:09,991 INFO L78 Accepts]: Start accepts. Automaton has 7955 states and 9352 transitions. Word has length 158 [2023-12-21 01:51:09,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:51:09,991 INFO L495 AbstractCegarLoop]: Abstraction has 7955 states and 9352 transitions. [2023-12-21 01:51:09,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 01:51:09,991 INFO L276 IsEmpty]: Start isEmpty. Operand 7955 states and 9352 transitions. [2023-12-21 01:51:09,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-21 01:51:09,996 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:51:09,996 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:51:09,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-21 01:51:09,996 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:51:09,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:51:09,996 INFO L85 PathProgramCache]: Analyzing trace with hash -264030544, now seen corresponding path program 1 times [2023-12-21 01:51:09,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:51:09,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544175436] [2023-12-21 01:51:09,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:51:09,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:51:10,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:10,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:51:10,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:10,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:51:10,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:10,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:51:10,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:10,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:51:10,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:10,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:51:10,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:10,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:51:10,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:10,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:51:10,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:10,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:51:10,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:10,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:51:10,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:10,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:51:10,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:10,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:51:10,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:10,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:51:10,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:10,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:51:10,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:10,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:51:10,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:10,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:51:10,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:10,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:51:10,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:10,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:51:10,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:10,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:51:10,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:10,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:51:10,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:10,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 01:51:10,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:10,477 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 01:51:10,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:51:10,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544175436] [2023-12-21 01:51:10,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544175436] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:51:10,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:51:10,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-21 01:51:10,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556122937] [2023-12-21 01:51:10,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:51:10,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 01:51:10,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:51:10,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 01:51:10,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-12-21 01:51:10,478 INFO L87 Difference]: Start difference. First operand 7955 states and 9352 transitions. Second operand has 13 states, 12 states have (on average 5.083333333333333) internal successors, (61), 13 states have internal predecessors, (61), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 01:51:11,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:51:11,801 INFO L93 Difference]: Finished difference Result 16701 states and 19590 transitions. [2023-12-21 01:51:11,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-21 01:51:11,805 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.083333333333333) internal successors, (61), 13 states have internal predecessors, (61), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 158 [2023-12-21 01:51:11,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:51:11,820 INFO L225 Difference]: With dead ends: 16701 [2023-12-21 01:51:11,820 INFO L226 Difference]: Without dead ends: 12415 [2023-12-21 01:51:11,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=281, Invalid=841, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 01:51:11,826 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 387 mSDsluCounter, 1734 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 2000 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 01:51:11,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 2000 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 01:51:11,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12415 states. [2023-12-21 01:51:12,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12415 to 3467. [2023-12-21 01:51:12,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3467 states, 3235 states have (on average 1.1474497681607418) internal successors, (3712), 3257 states have internal predecessors, (3712), 176 states have call successors, (176), 55 states have call predecessors, (176), 55 states have return successors, (176), 154 states have call predecessors, (176), 176 states have call successors, (176) [2023-12-21 01:51:12,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3467 states to 3467 states and 4064 transitions. [2023-12-21 01:51:12,211 INFO L78 Accepts]: Start accepts. Automaton has 3467 states and 4064 transitions. Word has length 158 [2023-12-21 01:51:12,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:51:12,211 INFO L495 AbstractCegarLoop]: Abstraction has 3467 states and 4064 transitions. [2023-12-21 01:51:12,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.083333333333333) internal successors, (61), 13 states have internal predecessors, (61), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 01:51:12,211 INFO L276 IsEmpty]: Start isEmpty. Operand 3467 states and 4064 transitions. [2023-12-21 01:51:12,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-21 01:51:12,214 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:51:12,214 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:51:12,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-12-21 01:51:12,214 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:51:12,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:51:12,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1603976560, now seen corresponding path program 1 times [2023-12-21 01:51:12,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:51:12,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465597585] [2023-12-21 01:51:12,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:51:12,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:51:12,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:12,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:51:12,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:12,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:51:12,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:12,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:51:12,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:12,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:51:12,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:12,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:51:12,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:12,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:51:12,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:12,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:51:12,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:12,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:51:12,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:12,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:51:12,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:12,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:51:12,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:12,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:51:12,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:12,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:51:12,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:12,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:51:12,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:12,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:51:12,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:12,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:51:12,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:12,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:51:12,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:12,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:51:12,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:12,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:51:12,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:12,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:51:12,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:12,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 01:51:12,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:12,321 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 01:51:12,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:51:12,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465597585] [2023-12-21 01:51:12,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465597585] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:51:12,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:51:12,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 01:51:12,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590213980] [2023-12-21 01:51:12,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:51:12,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 01:51:12,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:51:12,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 01:51:12,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:51:12,322 INFO L87 Difference]: Start difference. First operand 3467 states and 4064 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 01:51:12,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:51:12,754 INFO L93 Difference]: Finished difference Result 5995 states and 7049 transitions. [2023-12-21 01:51:12,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 01:51:12,760 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 158 [2023-12-21 01:51:12,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:51:12,764 INFO L225 Difference]: With dead ends: 5995 [2023-12-21 01:51:12,764 INFO L226 Difference]: Without dead ends: 4177 [2023-12-21 01:51:12,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-21 01:51:12,767 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 119 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 910 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:51:12,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 910 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 01:51:12,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4177 states. [2023-12-21 01:51:13,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4177 to 3407. [2023-12-21 01:51:13,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3407 states, 3175 states have (on average 1.1313385826771654) internal successors, (3592), 3197 states have internal predecessors, (3592), 176 states have call successors, (176), 55 states have call predecessors, (176), 55 states have return successors, (176), 154 states have call predecessors, (176), 176 states have call successors, (176) [2023-12-21 01:51:13,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3407 states to 3407 states and 3944 transitions. [2023-12-21 01:51:13,127 INFO L78 Accepts]: Start accepts. Automaton has 3407 states and 3944 transitions. Word has length 158 [2023-12-21 01:51:13,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:51:13,128 INFO L495 AbstractCegarLoop]: Abstraction has 3407 states and 3944 transitions. [2023-12-21 01:51:13,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 01:51:13,128 INFO L276 IsEmpty]: Start isEmpty. Operand 3407 states and 3944 transitions. [2023-12-21 01:51:13,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-21 01:51:13,131 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:51:13,136 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:51:13,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-12-21 01:51:13,136 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:51:13,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:51:13,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1242179295, now seen corresponding path program 1 times [2023-12-21 01:51:13,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:51:13,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491612914] [2023-12-21 01:51:13,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:51:13,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:51:13,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:13,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:51:13,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:13,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:51:13,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:13,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:51:13,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:13,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:51:13,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:13,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:51:13,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:13,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:51:13,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:13,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:51:13,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:13,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:51:13,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:13,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:51:13,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:13,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:51:13,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:13,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:51:13,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:13,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:51:13,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:13,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:51:13,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:13,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:51:13,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:13,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:51:13,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:13,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:51:13,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:13,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:51:13,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:13,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:51:13,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:13,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:51:13,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:13,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 01:51:13,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:13,550 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 01:51:13,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:51:13,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491612914] [2023-12-21 01:51:13,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491612914] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:51:13,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:51:13,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 01:51:13,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505920155] [2023-12-21 01:51:13,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:51:13,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 01:51:13,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:51:13,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 01:51:13,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-12-21 01:51:13,552 INFO L87 Difference]: Start difference. First operand 3407 states and 3944 transitions. Second operand has 10 states, 10 states have (on average 6.2) internal successors, (62), 10 states have internal predecessors, (62), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 01:51:14,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:51:14,203 INFO L93 Difference]: Finished difference Result 6887 states and 8047 transitions. [2023-12-21 01:51:14,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 01:51:14,205 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 10 states have internal predecessors, (62), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 159 [2023-12-21 01:51:14,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:51:14,210 INFO L225 Difference]: With dead ends: 6887 [2023-12-21 01:51:14,210 INFO L226 Difference]: Without dead ends: 4001 [2023-12-21 01:51:14,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2023-12-21 01:51:14,213 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 195 mSDsluCounter, 1465 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 1709 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 01:51:14,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 1709 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 01:51:14,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4001 states. [2023-12-21 01:51:14,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4001 to 3439. [2023-12-21 01:51:14,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3439 states, 3207 states have (on average 1.1300280636108513) internal successors, (3624), 3229 states have internal predecessors, (3624), 176 states have call successors, (176), 55 states have call predecessors, (176), 55 states have return successors, (176), 154 states have call predecessors, (176), 176 states have call successors, (176) [2023-12-21 01:51:14,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3439 states to 3439 states and 3976 transitions. [2023-12-21 01:51:14,541 INFO L78 Accepts]: Start accepts. Automaton has 3439 states and 3976 transitions. Word has length 159 [2023-12-21 01:51:14,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:51:14,542 INFO L495 AbstractCegarLoop]: Abstraction has 3439 states and 3976 transitions. [2023-12-21 01:51:14,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 10 states have internal predecessors, (62), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 01:51:14,542 INFO L276 IsEmpty]: Start isEmpty. Operand 3439 states and 3976 transitions. [2023-12-21 01:51:14,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-21 01:51:14,544 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:51:14,544 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:51:14,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-12-21 01:51:14,544 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:51:14,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:51:14,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1635206305, now seen corresponding path program 1 times [2023-12-21 01:51:14,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:51:14,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262542295] [2023-12-21 01:51:14,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:51:14,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:51:14,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:14,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:51:14,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:14,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:51:14,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:14,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:51:14,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:14,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:51:14,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:14,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:51:14,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:14,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:51:14,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:14,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:51:14,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:14,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:51:14,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:14,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:51:14,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:14,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:51:14,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:14,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:51:14,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:14,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:51:14,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:14,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:51:14,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:14,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:51:14,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:14,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:51:14,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:14,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:51:14,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:14,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:51:14,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:14,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:51:14,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:14,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:51:14,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:14,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 01:51:14,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:14,873 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 01:51:14,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:51:14,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262542295] [2023-12-21 01:51:14,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262542295] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:51:14,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:51:14,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 01:51:14,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39484154] [2023-12-21 01:51:14,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:51:14,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 01:51:14,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:51:14,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 01:51:14,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:51:14,874 INFO L87 Difference]: Start difference. First operand 3439 states and 3976 transitions. Second operand has 6 states, 5 states have (on average 12.4) internal successors, (62), 6 states have internal predecessors, (62), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 01:51:15,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:51:15,279 INFO L93 Difference]: Finished difference Result 6479 states and 7498 transitions. [2023-12-21 01:51:15,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 01:51:15,280 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.4) internal successors, (62), 6 states have internal predecessors, (62), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 159 [2023-12-21 01:51:15,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:51:15,283 INFO L225 Difference]: With dead ends: 6479 [2023-12-21 01:51:15,283 INFO L226 Difference]: Without dead ends: 3561 [2023-12-21 01:51:15,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:51:15,285 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 59 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:51:15,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 725 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 01:51:15,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3561 states. [2023-12-21 01:51:15,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3561 to 3431. [2023-12-21 01:51:15,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3431 states, 3199 states have (on average 1.1278524538918413) internal successors, (3608), 3221 states have internal predecessors, (3608), 176 states have call successors, (176), 55 states have call predecessors, (176), 55 states have return successors, (176), 154 states have call predecessors, (176), 176 states have call successors, (176) [2023-12-21 01:51:15,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3431 states to 3431 states and 3960 transitions. [2023-12-21 01:51:15,630 INFO L78 Accepts]: Start accepts. Automaton has 3431 states and 3960 transitions. Word has length 159 [2023-12-21 01:51:15,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:51:15,630 INFO L495 AbstractCegarLoop]: Abstraction has 3431 states and 3960 transitions. [2023-12-21 01:51:15,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.4) internal successors, (62), 6 states have internal predecessors, (62), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 01:51:15,630 INFO L276 IsEmpty]: Start isEmpty. Operand 3431 states and 3960 transitions. [2023-12-21 01:51:15,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-21 01:51:15,632 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:51:15,632 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:51:15,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-12-21 01:51:15,633 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:51:15,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:51:15,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1648432006, now seen corresponding path program 1 times [2023-12-21 01:51:15,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:51:15,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908425311] [2023-12-21 01:51:15,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:51:15,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:51:15,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:15,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:51:15,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:15,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:51:15,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:15,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:51:15,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:15,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:51:15,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:15,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:51:15,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:15,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:51:15,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:15,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:51:15,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:15,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:51:15,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:15,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:51:15,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:15,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:51:15,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:15,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:51:15,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:15,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:51:15,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:15,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:51:15,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:15,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:51:15,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:15,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:51:15,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:15,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:51:15,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:15,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:51:15,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:15,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:51:15,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:15,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:51:15,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:15,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 01:51:15,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:15,760 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 01:51:15,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:51:15,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908425311] [2023-12-21 01:51:15,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908425311] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:51:15,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:51:15,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 01:51:15,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318173448] [2023-12-21 01:51:15,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:51:15,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 01:51:15,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:51:15,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 01:51:15,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:51:15,761 INFO L87 Difference]: Start difference. First operand 3431 states and 3960 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 01:51:16,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:51:16,080 INFO L93 Difference]: Finished difference Result 3505 states and 4057 transitions. [2023-12-21 01:51:16,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 01:51:16,081 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 159 [2023-12-21 01:51:16,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:51:16,084 INFO L225 Difference]: With dead ends: 3505 [2023-12-21 01:51:16,084 INFO L226 Difference]: Without dead ends: 3503 [2023-12-21 01:51:16,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:51:16,085 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 7 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 01:51:16,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 550 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 01:51:16,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3503 states. [2023-12-21 01:51:16,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3503 to 3503. [2023-12-21 01:51:16,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3503 states, 3271 states have (on average 1.125038214613268) internal successors, (3680), 3293 states have internal predecessors, (3680), 176 states have call successors, (176), 55 states have call predecessors, (176), 55 states have return successors, (176), 154 states have call predecessors, (176), 176 states have call successors, (176) [2023-12-21 01:51:16,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3503 states to 3503 states and 4032 transitions. [2023-12-21 01:51:16,404 INFO L78 Accepts]: Start accepts. Automaton has 3503 states and 4032 transitions. Word has length 159 [2023-12-21 01:51:16,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:51:16,404 INFO L495 AbstractCegarLoop]: Abstraction has 3503 states and 4032 transitions. [2023-12-21 01:51:16,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 01:51:16,404 INFO L276 IsEmpty]: Start isEmpty. Operand 3503 states and 4032 transitions. [2023-12-21 01:51:16,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-21 01:51:16,406 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:51:16,406 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:51:16,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-12-21 01:51:16,406 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:51:16,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:51:16,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1612574051, now seen corresponding path program 1 times [2023-12-21 01:51:16,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:51:16,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381232322] [2023-12-21 01:51:16,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:51:16,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:51:16,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:17,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:51:17,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:17,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:51:17,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:17,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:51:17,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:17,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:51:17,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:17,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:51:17,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:17,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:51:17,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:17,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:51:17,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:17,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:51:17,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:17,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:51:17,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:17,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:51:17,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:17,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:51:17,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:17,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:51:17,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:17,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:51:17,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:17,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:51:17,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:17,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:51:17,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:17,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:51:17,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:17,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:51:17,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:17,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:51:17,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:17,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:51:17,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:17,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 01:51:17,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:17,095 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 01:51:17,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:51:17,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381232322] [2023-12-21 01:51:17,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381232322] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:51:17,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:51:17,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 01:51:17,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881360320] [2023-12-21 01:51:17,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:51:17,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 01:51:17,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:51:17,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 01:51:17,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-21 01:51:17,097 INFO L87 Difference]: Start difference. First operand 3503 states and 4032 transitions. Second operand has 12 states, 11 states have (on average 5.636363636363637) internal successors, (62), 12 states have internal predecessors, (62), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 01:51:17,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:51:17,677 INFO L93 Difference]: Finished difference Result 6579 states and 7571 transitions. [2023-12-21 01:51:17,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 01:51:17,677 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.636363636363637) internal successors, (62), 12 states have internal predecessors, (62), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 159 [2023-12-21 01:51:17,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:51:17,680 INFO L225 Difference]: With dead ends: 6579 [2023-12-21 01:51:17,680 INFO L226 Difference]: Without dead ends: 3597 [2023-12-21 01:51:17,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2023-12-21 01:51:17,683 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 169 mSDsluCounter, 1374 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 1554 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 01:51:17,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 1554 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 01:51:17,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3597 states. [2023-12-21 01:51:18,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3597 to 3463. [2023-12-21 01:51:18,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3463 states, 3231 states have (on average 1.1228721757969669) internal successors, (3628), 3253 states have internal predecessors, (3628), 176 states have call successors, (176), 55 states have call predecessors, (176), 55 states have return successors, (176), 154 states have call predecessors, (176), 176 states have call successors, (176) [2023-12-21 01:51:18,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3463 states to 3463 states and 3980 transitions. [2023-12-21 01:51:18,026 INFO L78 Accepts]: Start accepts. Automaton has 3463 states and 3980 transitions. Word has length 159 [2023-12-21 01:51:18,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:51:18,026 INFO L495 AbstractCegarLoop]: Abstraction has 3463 states and 3980 transitions. [2023-12-21 01:51:18,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.636363636363637) internal successors, (62), 12 states have internal predecessors, (62), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 01:51:18,026 INFO L276 IsEmpty]: Start isEmpty. Operand 3463 states and 3980 transitions. [2023-12-21 01:51:18,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-21 01:51:18,028 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:51:18,028 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:51:18,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-12-21 01:51:18,029 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:51:18,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:51:18,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1623903563, now seen corresponding path program 1 times [2023-12-21 01:51:18,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:51:18,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278795098] [2023-12-21 01:51:18,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:51:18,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:51:18,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:18,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:51:18,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:18,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:51:18,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:18,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:51:18,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:18,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:51:18,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:18,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:51:18,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:18,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:51:18,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:18,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:51:18,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:18,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:51:18,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:18,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:51:18,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:18,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:51:18,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:18,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:51:18,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:18,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:51:18,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:18,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:51:18,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:18,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:51:18,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:18,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:51:18,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:18,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:51:18,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:18,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:51:18,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:18,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:51:18,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:18,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:51:18,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:18,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 01:51:18,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:18,660 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 01:51:18,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:51:18,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278795098] [2023-12-21 01:51:18,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278795098] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:51:18,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:51:18,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 01:51:18,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827661514] [2023-12-21 01:51:18,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:51:18,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 01:51:18,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:51:18,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 01:51:18,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-21 01:51:18,663 INFO L87 Difference]: Start difference. First operand 3463 states and 3980 transitions. Second operand has 12 states, 11 states have (on average 5.636363636363637) internal successors, (62), 12 states have internal predecessors, (62), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 01:51:19,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:51:19,294 INFO L93 Difference]: Finished difference Result 6401 states and 7349 transitions. [2023-12-21 01:51:19,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 01:51:19,294 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.636363636363637) internal successors, (62), 12 states have internal predecessors, (62), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 159 [2023-12-21 01:51:19,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:51:19,297 INFO L225 Difference]: With dead ends: 6401 [2023-12-21 01:51:19,297 INFO L226 Difference]: Without dead ends: 3459 [2023-12-21 01:51:19,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2023-12-21 01:51:19,299 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 158 mSDsluCounter, 1658 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 1871 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 01:51:19,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 1871 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 01:51:19,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3459 states. [2023-12-21 01:51:19,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3459 to 3455. [2023-12-21 01:51:19,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3455 states, 3223 states have (on average 1.1194539249146758) internal successors, (3608), 3245 states have internal predecessors, (3608), 176 states have call successors, (176), 55 states have call predecessors, (176), 55 states have return successors, (176), 154 states have call predecessors, (176), 176 states have call successors, (176) [2023-12-21 01:51:19,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3455 states to 3455 states and 3960 transitions. [2023-12-21 01:51:19,614 INFO L78 Accepts]: Start accepts. Automaton has 3455 states and 3960 transitions. Word has length 159 [2023-12-21 01:51:19,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:51:19,615 INFO L495 AbstractCegarLoop]: Abstraction has 3455 states and 3960 transitions. [2023-12-21 01:51:19,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.636363636363637) internal successors, (62), 12 states have internal predecessors, (62), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 01:51:19,615 INFO L276 IsEmpty]: Start isEmpty. Operand 3455 states and 3960 transitions. [2023-12-21 01:51:19,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-21 01:51:19,617 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:51:19,617 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:51:19,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-12-21 01:51:19,617 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:51:19,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:51:19,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1994298319, now seen corresponding path program 1 times [2023-12-21 01:51:19,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:51:19,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642881958] [2023-12-21 01:51:19,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:51:19,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:51:19,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:19,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:51:19,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:19,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:51:19,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:19,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:51:19,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:19,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:51:19,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:19,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:51:19,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:19,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:51:19,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:19,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:51:19,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:19,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:51:19,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:19,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:51:19,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:19,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:51:19,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:19,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:51:19,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:19,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:51:19,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:19,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:51:19,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:19,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:51:19,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:19,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:51:19,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:19,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:51:19,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:19,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:51:19,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:19,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:51:19,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:19,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:51:19,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:19,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 01:51:19,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:19,958 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 01:51:19,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:51:19,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642881958] [2023-12-21 01:51:19,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642881958] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:51:19,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:51:19,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 01:51:19,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126682985] [2023-12-21 01:51:19,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:51:19,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 01:51:19,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:51:19,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 01:51:19,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-12-21 01:51:19,960 INFO L87 Difference]: Start difference. First operand 3455 states and 3960 transitions. Second operand has 10 states, 10 states have (on average 6.2) internal successors, (62), 10 states have internal predecessors, (62), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 01:51:20,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:51:20,618 INFO L93 Difference]: Finished difference Result 6865 states and 7917 transitions. [2023-12-21 01:51:20,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 01:51:20,618 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 10 states have internal predecessors, (62), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 159 [2023-12-21 01:51:20,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:51:20,622 INFO L225 Difference]: With dead ends: 6865 [2023-12-21 01:51:20,622 INFO L226 Difference]: Without dead ends: 3931 [2023-12-21 01:51:20,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2023-12-21 01:51:20,625 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 179 mSDsluCounter, 1799 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 2058 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 01:51:20,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 2058 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 01:51:20,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3931 states. [2023-12-21 01:51:20,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3931 to 3131. [2023-12-21 01:51:20,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3131 states, 2908 states have (on average 1.1213892709766162) internal successors, (3261), 2924 states have internal predecessors, (3261), 170 states have call successors, (170), 52 states have call predecessors, (170), 52 states have return successors, (170), 154 states have call predecessors, (170), 170 states have call successors, (170) [2023-12-21 01:51:20,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3131 states to 3131 states and 3601 transitions. [2023-12-21 01:51:20,930 INFO L78 Accepts]: Start accepts. Automaton has 3131 states and 3601 transitions. Word has length 159 [2023-12-21 01:51:20,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:51:20,930 INFO L495 AbstractCegarLoop]: Abstraction has 3131 states and 3601 transitions. [2023-12-21 01:51:20,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 10 states have internal predecessors, (62), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 01:51:20,930 INFO L276 IsEmpty]: Start isEmpty. Operand 3131 states and 3601 transitions. [2023-12-21 01:51:20,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-21 01:51:20,932 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:51:20,932 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:51:20,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-12-21 01:51:20,932 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:51:20,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:51:20,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1601271309, now seen corresponding path program 1 times [2023-12-21 01:51:20,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:51:20,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273008308] [2023-12-21 01:51:20,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:51:20,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:51:20,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:21,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:51:21,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:21,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:51:21,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:21,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:51:21,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:21,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:51:21,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:21,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:51:21,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:21,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:51:21,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:21,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:51:21,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:21,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:51:21,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:21,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:51:21,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:21,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:51:21,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:21,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:51:21,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:21,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:51:21,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:21,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:51:21,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:21,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:51:21,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:21,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:51:21,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:21,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:51:21,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:21,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:51:21,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:21,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:51:21,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:21,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:51:21,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:21,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 01:51:21,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:21,211 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 01:51:21,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:51:21,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273008308] [2023-12-21 01:51:21,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273008308] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:51:21,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:51:21,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 01:51:21,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077152451] [2023-12-21 01:51:21,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:51:21,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 01:51:21,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:51:21,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 01:51:21,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:51:21,212 INFO L87 Difference]: Start difference. First operand 3131 states and 3601 transitions. Second operand has 6 states, 5 states have (on average 12.4) internal successors, (62), 6 states have internal predecessors, (62), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 01:51:21,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:51:21,602 INFO L93 Difference]: Finished difference Result 5767 states and 6611 transitions. [2023-12-21 01:51:21,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 01:51:21,602 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.4) internal successors, (62), 6 states have internal predecessors, (62), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 159 [2023-12-21 01:51:21,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:51:21,605 INFO L225 Difference]: With dead ends: 5767 [2023-12-21 01:51:21,605 INFO L226 Difference]: Without dead ends: 3121 [2023-12-21 01:51:21,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:51:21,607 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 64 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:51:21,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 724 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 01:51:21,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3121 states. [2023-12-21 01:51:21,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3121 to 3119. [2023-12-21 01:51:21,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3119 states, 2889 states have (on average 1.115264797507788) internal successors, (3222), 2905 states have internal predecessors, (3222), 170 states have call successors, (170), 59 states have call predecessors, (170), 59 states have return successors, (170), 154 states have call predecessors, (170), 170 states have call successors, (170) [2023-12-21 01:51:21,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3119 states to 3119 states and 3562 transitions. [2023-12-21 01:51:21,916 INFO L78 Accepts]: Start accepts. Automaton has 3119 states and 3562 transitions. Word has length 159 [2023-12-21 01:51:21,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:51:21,916 INFO L495 AbstractCegarLoop]: Abstraction has 3119 states and 3562 transitions. [2023-12-21 01:51:21,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.4) internal successors, (62), 6 states have internal predecessors, (62), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 01:51:21,916 INFO L276 IsEmpty]: Start isEmpty. Operand 3119 states and 3562 transitions. [2023-12-21 01:51:21,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-12-21 01:51:21,918 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:51:21,918 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:51:21,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-12-21 01:51:21,918 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:51:21,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:51:21,918 INFO L85 PathProgramCache]: Analyzing trace with hash -194576730, now seen corresponding path program 1 times [2023-12-21 01:51:21,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:51:21,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744974249] [2023-12-21 01:51:21,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:51:21,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:51:21,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:23,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:51:23,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:23,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:51:23,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:23,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:51:23,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:23,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:51:23,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:23,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:51:23,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:23,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:51:23,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:23,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:51:23,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:23,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:51:23,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:23,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:51:23,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:23,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:51:23,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:23,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:51:23,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:23,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:51:23,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:23,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:51:23,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:23,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:51:23,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:23,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:51:23,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:23,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:51:23,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:23,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:51:23,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:23,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:51:23,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:23,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:51:23,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:23,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 01:51:23,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:23,190 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 54 proven. 54 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2023-12-21 01:51:23,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:51:23,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744974249] [2023-12-21 01:51:23,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744974249] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 01:51:23,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077845545] [2023-12-21 01:51:23,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:51:23,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:51:23,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:51:23,192 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) [2023-12-21 01:51:23,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 01:51:23,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:23,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-21 01:51:23,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:51:23,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 43 [2023-12-21 01:51:23,637 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:51:23,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 74 treesize of output 32 [2023-12-21 01:51:23,675 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 01:51:23,675 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:51:23,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077845545] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:51:23,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 01:51:23,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [21] total 26 [2023-12-21 01:51:23,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852797237] [2023-12-21 01:51:23,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:51:23,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 01:51:23,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:51:23,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 01:51:23,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=585, Unknown=0, NotChecked=0, Total=650 [2023-12-21 01:51:23,677 INFO L87 Difference]: Start difference. First operand 3119 states and 3562 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 01:51:24,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:51:24,373 INFO L93 Difference]: Finished difference Result 4960 states and 5673 transitions. [2023-12-21 01:51:24,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 01:51:24,373 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 160 [2023-12-21 01:51:24,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:51:24,376 INFO L225 Difference]: With dead ends: 4960 [2023-12-21 01:51:24,376 INFO L226 Difference]: Without dead ends: 3338 [2023-12-21 01:51:24,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=726, Unknown=0, NotChecked=0, Total=812 [2023-12-21 01:51:24,379 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 105 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 1093 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 01:51:24,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 1093 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 01:51:24,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3338 states. [2023-12-21 01:51:24,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3338 to 3101. [2023-12-21 01:51:24,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3101 states, 2871 states have (on average 1.1138975966562172) internal successors, (3198), 2887 states have internal predecessors, (3198), 170 states have call successors, (170), 59 states have call predecessors, (170), 59 states have return successors, (170), 154 states have call predecessors, (170), 170 states have call successors, (170) [2023-12-21 01:51:24,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3101 states to 3101 states and 3538 transitions. [2023-12-21 01:51:24,727 INFO L78 Accepts]: Start accepts. Automaton has 3101 states and 3538 transitions. Word has length 160 [2023-12-21 01:51:24,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:51:24,727 INFO L495 AbstractCegarLoop]: Abstraction has 3101 states and 3538 transitions. [2023-12-21 01:51:24,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 01:51:24,727 INFO L276 IsEmpty]: Start isEmpty. Operand 3101 states and 3538 transitions. [2023-12-21 01:51:24,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 01:51:24,728 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:51:24,729 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:51:24,734 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-21 01:51:24,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:51:24,929 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:51:24,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:51:24,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1006444245, now seen corresponding path program 1 times [2023-12-21 01:51:24,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:51:24,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005409992] [2023-12-21 01:51:24,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:51:24,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:51:24,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:25,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:51:25,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:25,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:51:25,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:25,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:51:25,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:25,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:51:25,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:25,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:51:25,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:25,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:51:25,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:25,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:51:25,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:25,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:51:25,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:25,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:51:25,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:25,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:51:25,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:25,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:51:25,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:25,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:51:25,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:25,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:51:25,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:25,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:51:25,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:25,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:51:25,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:25,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:51:25,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:25,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:51:25,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:25,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:51:25,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:25,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:51:25,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:25,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 01:51:25,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:25,090 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 01:51:25,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:51:25,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005409992] [2023-12-21 01:51:25,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005409992] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:51:25,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:51:25,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 01:51:25,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313771057] [2023-12-21 01:51:25,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:51:25,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 01:51:25,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:51:25,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 01:51:25,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:51:25,091 INFO L87 Difference]: Start difference. First operand 3101 states and 3538 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 01:51:25,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:51:25,836 INFO L93 Difference]: Finished difference Result 8587 states and 9737 transitions. [2023-12-21 01:51:25,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 01:51:25,837 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 161 [2023-12-21 01:51:25,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:51:25,841 INFO L225 Difference]: With dead ends: 8587 [2023-12-21 01:51:25,841 INFO L226 Difference]: Without dead ends: 5975 [2023-12-21 01:51:25,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:51:25,844 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 93 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:51:25,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 632 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 01:51:25,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5975 states. [2023-12-21 01:51:26,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5975 to 5973. [2023-12-21 01:51:26,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5973 states, 5546 states have (on average 1.1018752253876667) internal successors, (6111), 5580 states have internal predecessors, (6111), 316 states have call successors, (316), 110 states have call predecessors, (316), 110 states have return successors, (316), 282 states have call predecessors, (316), 316 states have call successors, (316) [2023-12-21 01:51:26,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5973 states to 5973 states and 6743 transitions. [2023-12-21 01:51:26,499 INFO L78 Accepts]: Start accepts. Automaton has 5973 states and 6743 transitions. Word has length 161 [2023-12-21 01:51:26,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:51:26,499 INFO L495 AbstractCegarLoop]: Abstraction has 5973 states and 6743 transitions. [2023-12-21 01:51:26,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 01:51:26,499 INFO L276 IsEmpty]: Start isEmpty. Operand 5973 states and 6743 transitions. [2023-12-21 01:51:26,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-21 01:51:26,502 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:51:26,502 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:51:26,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-12-21 01:51:26,502 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:51:26,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:51:26,503 INFO L85 PathProgramCache]: Analyzing trace with hash -710424436, now seen corresponding path program 1 times [2023-12-21 01:51:26,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:51:26,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142178555] [2023-12-21 01:51:26,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:51:26,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:51:26,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:26,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:51:26,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:26,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:51:26,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:26,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:51:26,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:26,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:51:26,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:26,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:51:26,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:26,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:51:26,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:26,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:51:26,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:26,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:51:26,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:26,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:51:26,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:26,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:51:26,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:26,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:51:26,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:26,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:51:26,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:26,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:51:26,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:26,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:51:26,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:26,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:51:26,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:26,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:51:26,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:26,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:51:26,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:26,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:51:26,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:26,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:51:26,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:26,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 01:51:26,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:26,717 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 01:51:26,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:51:26,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142178555] [2023-12-21 01:51:26,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142178555] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:51:26,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:51:26,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 01:51:26,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934173688] [2023-12-21 01:51:26,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:51:26,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 01:51:26,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:51:26,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 01:51:26,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:51:26,718 INFO L87 Difference]: Start difference. First operand 5973 states and 6743 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 01:51:27,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:51:27,729 INFO L93 Difference]: Finished difference Result 8879 states and 10030 transitions. [2023-12-21 01:51:27,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 01:51:27,730 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 162 [2023-12-21 01:51:27,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:51:27,738 INFO L225 Difference]: With dead ends: 8879 [2023-12-21 01:51:27,738 INFO L226 Difference]: Without dead ends: 8877 [2023-12-21 01:51:27,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2023-12-21 01:51:27,739 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 77 mSDsluCounter, 897 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 1099 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:51:27,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 1099 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 01:51:27,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8877 states. [2023-12-21 01:51:28,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8877 to 8313. [2023-12-21 01:51:28,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8313 states, 7886 states have (on average 1.106391072787218) internal successors, (8725), 7920 states have internal predecessors, (8725), 316 states have call successors, (316), 110 states have call predecessors, (316), 110 states have return successors, (316), 282 states have call predecessors, (316), 316 states have call successors, (316) [2023-12-21 01:51:28,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8313 states to 8313 states and 9357 transitions. [2023-12-21 01:51:28,418 INFO L78 Accepts]: Start accepts. Automaton has 8313 states and 9357 transitions. Word has length 162 [2023-12-21 01:51:28,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:51:28,418 INFO L495 AbstractCegarLoop]: Abstraction has 8313 states and 9357 transitions. [2023-12-21 01:51:28,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 01:51:28,419 INFO L276 IsEmpty]: Start isEmpty. Operand 8313 states and 9357 transitions. [2023-12-21 01:51:28,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-21 01:51:28,422 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:51:28,422 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:51:28,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-12-21 01:51:28,423 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:51:28,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:51:28,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1554429938, now seen corresponding path program 1 times [2023-12-21 01:51:28,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:51:28,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089518828] [2023-12-21 01:51:28,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:51:28,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:51:28,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:29,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:51:29,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:29,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:51:29,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:29,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:51:29,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:29,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:51:29,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:29,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:51:29,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:29,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:51:29,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:29,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:51:29,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:29,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:51:29,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:29,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:51:29,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:29,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:51:29,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:29,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:51:29,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:29,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:51:29,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:29,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:51:29,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:29,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:51:29,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:29,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:51:29,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:29,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:51:29,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:29,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:51:29,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:29,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:51:29,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:29,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:51:29,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:29,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 01:51:29,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:29,434 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 01:51:29,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:51:29,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089518828] [2023-12-21 01:51:29,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089518828] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:51:29,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:51:29,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-12-21 01:51:29,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541311415] [2023-12-21 01:51:29,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:51:29,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-21 01:51:29,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:51:29,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-21 01:51:29,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2023-12-21 01:51:29,435 INFO L87 Difference]: Start difference. First operand 8313 states and 9357 transitions. Second operand has 17 states, 16 states have (on average 4.0625) internal successors, (65), 17 states have internal predecessors, (65), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2023-12-21 01:51:37,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:51:37,058 INFO L93 Difference]: Finished difference Result 20935 states and 23386 transitions. [2023-12-21 01:51:37,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-21 01:51:37,059 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 4.0625) internal successors, (65), 17 states have internal predecessors, (65), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) Word has length 162 [2023-12-21 01:51:37,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:51:37,071 INFO L225 Difference]: With dead ends: 20935 [2023-12-21 01:51:37,072 INFO L226 Difference]: Without dead ends: 13911 [2023-12-21 01:51:37,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=311, Invalid=1095, Unknown=0, NotChecked=0, Total=1406 [2023-12-21 01:51:37,079 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 787 mSDsluCounter, 1168 mSDsCounter, 0 mSdLazyCounter, 1422 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 1369 SdHoareTripleChecker+Invalid, 1706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 1422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-21 01:51:37,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 1369 Invalid, 1706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 1422 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-21 01:51:37,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13911 states. [2023-12-21 01:51:37,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13911 to 8520. [2023-12-21 01:51:37,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8520 states, 8093 states have (on average 1.1062646731743482) internal successors, (8953), 8127 states have internal predecessors, (8953), 316 states have call successors, (316), 110 states have call predecessors, (316), 110 states have return successors, (316), 282 states have call predecessors, (316), 316 states have call successors, (316) [2023-12-21 01:51:37,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8520 states to 8520 states and 9585 transitions. [2023-12-21 01:51:37,836 INFO L78 Accepts]: Start accepts. Automaton has 8520 states and 9585 transitions. Word has length 162 [2023-12-21 01:51:37,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:51:37,836 INFO L495 AbstractCegarLoop]: Abstraction has 8520 states and 9585 transitions. [2023-12-21 01:51:37,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 4.0625) internal successors, (65), 17 states have internal predecessors, (65), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2023-12-21 01:51:37,837 INFO L276 IsEmpty]: Start isEmpty. Operand 8520 states and 9585 transitions. [2023-12-21 01:51:37,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-21 01:51:37,840 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:51:37,840 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:51:37,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-12-21 01:51:37,840 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:51:37,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:51:37,841 INFO L85 PathProgramCache]: Analyzing trace with hash 532838034, now seen corresponding path program 1 times [2023-12-21 01:51:37,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:51:37,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584213512] [2023-12-21 01:51:37,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:51:37,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:51:37,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:38,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:51:38,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:38,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:51:38,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:38,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:51:38,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:38,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:51:38,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:38,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:51:38,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:38,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:51:38,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:38,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:51:38,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:38,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:51:38,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:38,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:51:38,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:38,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:51:38,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:38,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:51:38,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:38,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:51:38,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:38,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:51:38,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:38,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:51:38,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:38,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:51:38,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:38,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:51:38,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:38,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:51:38,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:38,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:51:38,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:38,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:51:38,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:38,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 01:51:38,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:38,571 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 01:51:38,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:51:38,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584213512] [2023-12-21 01:51:38,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584213512] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:51:38,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:51:38,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-12-21 01:51:38,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196864022] [2023-12-21 01:51:38,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:51:38,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-21 01:51:38,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:51:38,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-21 01:51:38,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2023-12-21 01:51:38,573 INFO L87 Difference]: Start difference. First operand 8520 states and 9585 transitions. Second operand has 17 states, 16 states have (on average 4.0625) internal successors, (65), 17 states have internal predecessors, (65), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2023-12-21 01:51:41,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:51:41,207 INFO L93 Difference]: Finished difference Result 18863 states and 21086 transitions. [2023-12-21 01:51:41,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-21 01:51:41,207 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 4.0625) internal successors, (65), 17 states have internal predecessors, (65), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) Word has length 162 [2023-12-21 01:51:41,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:51:41,247 INFO L225 Difference]: With dead ends: 18863 [2023-12-21 01:51:41,247 INFO L226 Difference]: Without dead ends: 13885 [2023-12-21 01:51:41,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=312, Invalid=1094, Unknown=0, NotChecked=0, Total=1406 [2023-12-21 01:51:41,255 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 524 mSDsluCounter, 1578 mSDsCounter, 0 mSdLazyCounter, 1493 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 1796 SdHoareTripleChecker+Invalid, 1686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 1493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 01:51:41,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [524 Valid, 1796 Invalid, 1686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 1493 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 01:51:41,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13885 states. [2023-12-21 01:51:41,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13885 to 8708. [2023-12-21 01:51:41,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8708 states, 8281 states have (on average 1.105301292114479) internal successors, (9153), 8315 states have internal predecessors, (9153), 316 states have call successors, (316), 110 states have call predecessors, (316), 110 states have return successors, (316), 282 states have call predecessors, (316), 316 states have call successors, (316) [2023-12-21 01:51:41,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8708 states to 8708 states and 9785 transitions. [2023-12-21 01:51:41,972 INFO L78 Accepts]: Start accepts. Automaton has 8708 states and 9785 transitions. Word has length 162 [2023-12-21 01:51:41,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:51:41,972 INFO L495 AbstractCegarLoop]: Abstraction has 8708 states and 9785 transitions. [2023-12-21 01:51:41,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 4.0625) internal successors, (65), 17 states have internal predecessors, (65), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2023-12-21 01:51:41,973 INFO L276 IsEmpty]: Start isEmpty. Operand 8708 states and 9785 transitions. [2023-12-21 01:51:41,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-21 01:51:41,976 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:51:41,976 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:51:41,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-12-21 01:51:41,977 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:51:41,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:51:41,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1587584778, now seen corresponding path program 1 times [2023-12-21 01:51:41,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:51:41,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051720459] [2023-12-21 01:51:41,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:51:41,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:51:42,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:42,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:51:42,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:42,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:51:42,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:42,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:51:42,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:42,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:51:42,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:42,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:51:42,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:42,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:51:42,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:42,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:51:42,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:42,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:51:42,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:42,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:51:42,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:42,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:51:42,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:42,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:51:42,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:42,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:51:42,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:42,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:51:42,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:42,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:51:42,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:42,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:51:42,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:42,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:51:42,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:42,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:51:42,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:42,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:51:42,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:42,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:51:42,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:42,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 01:51:42,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:51:42,351 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 01:51:42,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:51:42,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051720459] [2023-12-21 01:51:42,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051720459] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:51:42,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:51:42,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 01:51:42,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750197469] [2023-12-21 01:51:42,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:51:42,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 01:51:42,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:51:42,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 01:51:42,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:51:42,352 INFO L87 Difference]: Start difference. First operand 8708 states and 9785 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 01:51:43,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:51:43,555 INFO L93 Difference]: Finished difference Result 16204 states and 18197 transitions. [2023-12-21 01:51:43,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 01:51:43,556 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 162 [2023-12-21 01:51:43,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:51:43,556 INFO L225 Difference]: With dead ends: 16204 [2023-12-21 01:51:43,556 INFO L226 Difference]: Without dead ends: 0 [2023-12-21 01:51:43,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-21 01:51:43,566 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 74 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 01:51:43,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 833 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 01:51:43,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-21 01:51:43,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-21 01:51:43,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 01:51:43,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-21 01:51:43,567 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 162 [2023-12-21 01:51:43,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:51:43,567 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-21 01:51:43,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 01:51:43,567 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-21 01:51:43,567 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-21 01:51:43,569 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 01:51:43,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-12-21 01:51:43,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-21 02:03:30,450 WARN L293 SmtUtils]: Spent 11.78m on a formula simplification. DAG size of input: 334 DAG size of output: 607 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) Received shutdown request... [2023-12-21 02:04:15,060 WARN L619 AbstractCegarLoop]: Verification canceled: while PolyPacSimplificationTermWalker was simplifying a ∨-101-25-7-7-7-15-7-15-7-15-7-15-7-15-7-12-7-11-7-11-7-6-7-6-7-6-7-6-7-6-7-6-7-6-5-6-3-4-2-4-2-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-143-25-7-12-7-15-7-15-7-15-7-15-7-15-7-12-7-11-7-11-7-6-7-6-7-6-7-6-7-6-7-6-7-6-5-6-3-4-2-4-2-1 context. [2023-12-21 02:04:15,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-21 02:04:15,069 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 [2023-12-21 02:04:15,090 INFO L257 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2023-12-21 02:04:15,091 INFO L158 Benchmark]: Toolchain (without parser) took 847703.49ms. Allocated memory was 234.9MB in the beginning and 1.7GB in the end (delta: 1.5GB). Free memory was 172.0MB in the beginning and 1.1GB in the end (delta: -888.9MB). Peak memory consumption was 614.2MB. Max. memory is 8.0GB. [2023-12-21 02:04:15,091 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 234.9MB. Free memory is still 185.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 02:04:15,092 INFO L158 Benchmark]: CACSL2BoogieTranslator took 248.43ms. Allocated memory is still 234.9MB. Free memory was 172.0MB in the beginning and 156.7MB in the end (delta: 15.3MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-21 02:04:15,092 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.77ms. Allocated memory is still 234.9MB. Free memory was 156.7MB in the beginning and 152.8MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-21 02:04:15,092 INFO L158 Benchmark]: Boogie Preprocessor took 89.27ms. Allocated memory was 234.9MB in the beginning and 314.6MB in the end (delta: 79.7MB). Free memory was 152.8MB in the beginning and 277.6MB in the end (delta: -124.8MB). Peak memory consumption was 6.6MB. Max. memory is 8.0GB. [2023-12-21 02:04:15,092 INFO L158 Benchmark]: RCFGBuilder took 566.63ms. Allocated memory is still 314.6MB. Free memory was 277.6MB in the beginning and 246.6MB in the end (delta: 30.9MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. [2023-12-21 02:04:15,092 INFO L158 Benchmark]: TraceAbstraction took 846733.24ms. Allocated memory was 314.6MB in the beginning and 1.7GB in the end (delta: 1.4GB). Free memory was 245.6MB in the beginning and 1.1GB in the end (delta: -815.3MB). Peak memory consumption was 606.5MB. Max. memory is 8.0GB. [2023-12-21 02:04:15,093 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 234.9MB. Free memory is still 185.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 248.43ms. Allocated memory is still 234.9MB. Free memory was 172.0MB in the beginning and 156.7MB in the end (delta: 15.3MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 61.77ms. Allocated memory is still 234.9MB. Free memory was 156.7MB in the beginning and 152.8MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 89.27ms. Allocated memory was 234.9MB in the beginning and 314.6MB in the end (delta: 79.7MB). Free memory was 152.8MB in the beginning and 277.6MB in the end (delta: -124.8MB). Peak memory consumption was 6.6MB. Max. memory is 8.0GB. * RCFGBuilder took 566.63ms. Allocated memory is still 314.6MB. Free memory was 277.6MB in the beginning and 246.6MB in the end (delta: 30.9MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. * TraceAbstraction took 846733.24ms. Allocated memory was 314.6MB in the beginning and 1.7GB in the end (delta: 1.4GB). Free memory was 245.6MB in the beginning and 1.1GB in the end (delta: -815.3MB). Peak memory consumption was 606.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while PolyPacSimplificationTermWalker was simplifying a ∨-47-25-7-12-8-15-8-15-8-15-8-15-8-12-8-6-8-6-8-6-8-6-7-6-5-4-3-4-2-4-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-72-25-8-12-8-15-8-15-8-15-8-15-8-12-8-6-8-6-8-6-8-6-7-6-5-4-3-4-2-4-2-1 context. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown