/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-ap_file-32.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 01:53:06,789 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 01:53:06,883 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 01:53:06,888 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 01:53:06,889 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 01:53:06,916 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 01:53:06,917 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 01:53:06,917 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 01:53:06,918 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 01:53:06,921 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 01:53:06,921 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 01:53:06,922 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 01:53:06,922 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 01:53:06,923 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 01:53:06,923 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 01:53:06,924 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 01:53:06,924 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 01:53:06,924 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 01:53:06,925 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 01:53:06,925 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 01:53:06,925 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 01:53:06,926 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 01:53:06,926 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 01:53:06,926 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 01:53:06,926 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 01:53:06,927 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 01:53:06,927 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 01:53:06,927 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 01:53:06,927 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 01:53:06,928 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 01:53:06,929 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 01:53:06,929 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 01:53:06,929 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 01:53:06,929 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 01:53:06,929 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 01:53:06,929 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 01:53:06,929 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 01:53:06,930 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 01:53:06,930 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 01:53:06,930 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 01:53:06,930 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 01:53:06,930 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 01:53:06,930 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 01:53:06,930 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 01:53:07,106 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 01:53:07,122 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 01:53:07,124 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 01:53:07,125 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 01:53:07,125 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 01:53:07,126 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-32.i [2023-12-21 01:53:08,273 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 01:53:08,427 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 01:53:08,428 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-32.i [2023-12-21 01:53:08,434 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/673ebef57/0ab2b08a82634df488430a8d3edf5bb0/FLAGcc9c9977d [2023-12-21 01:53:08,460 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/673ebef57/0ab2b08a82634df488430a8d3edf5bb0 [2023-12-21 01:53:08,463 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 01:53:08,463 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 01:53:08,464 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 01:53:08,464 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 01:53:08,467 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 01:53:08,468 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:53:08" (1/1) ... [2023-12-21 01:53:08,469 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bb2adf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:53:08, skipping insertion in model container [2023-12-21 01:53:08,469 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:53:08" (1/1) ... [2023-12-21 01:53:08,490 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 01:53:08,588 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-ap_file-32.i[917,930] [2023-12-21 01:53:08,632 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 01:53:08,640 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 01:53:08,647 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-ap_file-32.i[917,930] [2023-12-21 01:53:08,678 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 01:53:08,690 INFO L206 MainTranslator]: Completed translation [2023-12-21 01:53:08,691 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:53:08 WrapperNode [2023-12-21 01:53:08,691 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 01:53:08,691 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 01:53:08,692 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 01:53:08,692 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 01:53:08,696 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:53:08" (1/1) ... [2023-12-21 01:53:08,713 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:53:08" (1/1) ... [2023-12-21 01:53:08,753 INFO L138 Inliner]: procedures = 26, calls = 158, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 452 [2023-12-21 01:53:08,753 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 01:53:08,754 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 01:53:08,754 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 01:53:08,754 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 01:53:08,762 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:53:08" (1/1) ... [2023-12-21 01:53:08,762 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:53:08" (1/1) ... [2023-12-21 01:53:08,766 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:53:08" (1/1) ... [2023-12-21 01:53:08,778 INFO L175 MemorySlicer]: Split 124 memory accesses to 6 slices as follows [2, 14, 23, 8, 24, 53]. 43 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 2, 3, 1, 2, 4]. The 15 writes are split as follows [0, 2, 5, 2, 2, 4]. [2023-12-21 01:53:08,778 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:53:08" (1/1) ... [2023-12-21 01:53:08,778 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:53:08" (1/1) ... [2023-12-21 01:53:08,788 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:53:08" (1/1) ... [2023-12-21 01:53:08,791 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:53:08" (1/1) ... [2023-12-21 01:53:08,792 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:53:08" (1/1) ... [2023-12-21 01:53:08,794 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:53:08" (1/1) ... [2023-12-21 01:53:08,797 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 01:53:08,798 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 01:53:08,798 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 01:53:08,798 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 01:53:08,799 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:53:08" (1/1) ... [2023-12-21 01:53:08,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 01:53:08,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:53:08,825 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 01:53:08,857 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 01:53:08,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 01:53:08,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-21 01:53:08,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-21 01:53:08,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-21 01:53:08,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-12-21 01:53:08,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-12-21 01:53:08,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-12-21 01:53:08,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-21 01:53:08,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-21 01:53:08,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-21 01:53:08,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-12-21 01:53:08,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-12-21 01:53:08,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-12-21 01:53:08,871 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-21 01:53:08,871 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-21 01:53:08,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 01:53:08,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-21 01:53:08,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-21 01:53:08,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-21 01:53:08,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-12-21 01:53:08,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-12-21 01:53:08,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 01:53:08,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 01:53:08,995 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 01:53:08,997 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 01:53:09,330 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 01:53:09,387 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 01:53:09,387 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-21 01:53:09,388 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:53:09 BoogieIcfgContainer [2023-12-21 01:53:09,388 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 01:53:09,389 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 01:53:09,389 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 01:53:09,392 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 01:53:09,392 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 01:53:08" (1/3) ... [2023-12-21 01:53:09,392 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@86e2ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:53:09, skipping insertion in model container [2023-12-21 01:53:09,392 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:53:08" (2/3) ... [2023-12-21 01:53:09,393 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@86e2ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:53:09, skipping insertion in model container [2023-12-21 01:53:09,393 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:53:09" (3/3) ... [2023-12-21 01:53:09,393 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-ap_file-32.i [2023-12-21 01:53:09,405 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 01:53:09,406 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 01:53:09,449 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 01:53:09,455 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;@8abfa42, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 01:53:09,456 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 01:53:09,459 INFO L276 IsEmpty]: Start isEmpty. Operand has 92 states, 71 states have (on average 1.408450704225352) internal successors, (100), 72 states have internal predecessors, (100), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-21 01:53:09,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-21 01:53:09,478 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:53:09,479 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:53:09,479 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:53:09,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:53:09,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1301880535, now seen corresponding path program 1 times [2023-12-21 01:53:09,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:53:09,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283848221] [2023-12-21 01:53:09,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:53:09,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:53:09,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:09,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:53:09,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:09,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:53:09,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:09,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:53:09,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:09,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:53:09,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:09,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:53:09,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:09,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:53:09,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:09,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:53:09,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:09,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:53:09,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:09,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:53:09,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:09,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:53:09,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:09,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:53:09,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:09,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:53:09,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:09,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:53:09,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:09,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:53:09,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:09,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:53:09,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:09,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:53:09,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:09,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:53:09,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:09,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:53:09,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:09,830 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-21 01:53:09,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:53:09,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283848221] [2023-12-21 01:53:09,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283848221] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:53:09,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:53:09,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 01:53:09,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794901799] [2023-12-21 01:53:09,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:53:09,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 01:53:09,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:53:09,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 01:53:09,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 01:53:09,872 INFO L87 Difference]: Start difference. First operand has 92 states, 71 states have (on average 1.408450704225352) internal successors, (100), 72 states have internal predecessors, (100), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-21 01:53:09,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:53:09,904 INFO L93 Difference]: Finished difference Result 181 states and 288 transitions. [2023-12-21 01:53:09,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 01:53:09,905 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 124 [2023-12-21 01:53:09,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:53:09,910 INFO L225 Difference]: With dead ends: 181 [2023-12-21 01:53:09,910 INFO L226 Difference]: Without dead ends: 90 [2023-12-21 01:53:09,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 56 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 01:53:09,915 INFO L413 NwaCegarLoop]: 123 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, 123 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 01:53:09,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 123 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 01:53:09,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-12-21 01:53:09,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2023-12-21 01:53:09,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 70 states have (on average 1.3) internal successors, (91), 70 states have internal predecessors, (91), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-21 01:53:09,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 127 transitions. [2023-12-21 01:53:09,956 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 127 transitions. Word has length 124 [2023-12-21 01:53:09,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:53:09,957 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 127 transitions. [2023-12-21 01:53:09,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-21 01:53:09,957 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 127 transitions. [2023-12-21 01:53:09,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-21 01:53:09,959 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:53:09,959 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:53:09,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 01:53:09,959 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:53:09,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:53:09,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1738315597, now seen corresponding path program 1 times [2023-12-21 01:53:09,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:53:09,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020678452] [2023-12-21 01:53:09,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:53:09,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:53:10,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:10,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:53:10,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:10,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:53:10,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:10,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:53:10,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:10,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:53:10,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:10,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:53:10,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:10,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:53:10,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:10,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:53:10,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:10,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:53:10,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:10,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:53:10,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:10,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:53:10,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:10,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:53:10,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:10,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:53:10,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:10,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:53:10,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:10,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:53:10,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:10,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:53:10,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:10,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:53:10,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:10,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:53:10,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:10,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:53:10,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:10,213 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-21 01:53:10,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:53:10,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020678452] [2023-12-21 01:53:10,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020678452] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:53:10,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:53:10,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 01:53:10,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011179778] [2023-12-21 01:53:10,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:53:10,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 01:53:10,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:53:10,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 01:53:10,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 01:53:10,218 INFO L87 Difference]: Start difference. First operand 90 states and 127 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-21 01:53:10,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:53:10,351 INFO L93 Difference]: Finished difference Result 306 states and 432 transitions. [2023-12-21 01:53:10,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 01:53:10,361 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 124 [2023-12-21 01:53:10,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:53:10,363 INFO L225 Difference]: With dead ends: 306 [2023-12-21 01:53:10,363 INFO L226 Difference]: Without dead ends: 217 [2023-12-21 01:53:10,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 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 01:53:10,364 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 206 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:53:10,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 350 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 01:53:10,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2023-12-21 01:53:10,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 185. [2023-12-21 01:53:10,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 146 states have (on average 1.3013698630136987) internal successors, (190), 146 states have internal predecessors, (190), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-21 01:53:10,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 262 transitions. [2023-12-21 01:53:10,394 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 262 transitions. Word has length 124 [2023-12-21 01:53:10,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:53:10,396 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 262 transitions. [2023-12-21 01:53:10,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-21 01:53:10,396 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 262 transitions. [2023-12-21 01:53:10,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-21 01:53:10,400 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:53:10,400 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:53:10,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 01:53:10,400 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:53:10,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:53:10,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1084937767, now seen corresponding path program 1 times [2023-12-21 01:53:10,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:53:10,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112406702] [2023-12-21 01:53:10,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:53:10,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:53:10,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:11,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:53:11,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:11,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:53:11,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:11,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:53:11,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:11,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:53:11,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:11,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:53:11,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:11,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:53:11,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:11,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:53:11,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:11,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:53:11,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:11,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:53:11,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:11,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:53:11,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:11,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:53:11,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:11,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:53:11,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:11,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:53:11,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:11,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:53:11,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:11,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:53:11,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:11,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:53:11,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:11,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:53:11,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:11,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:53:11,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:11,416 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-21 01:53:11,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:53:11,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112406702] [2023-12-21 01:53:11,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112406702] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:53:11,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:53:11,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 01:53:11,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475402447] [2023-12-21 01:53:11,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:53:11,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 01:53:11,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:53:11,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 01:53:11,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-12-21 01:53:11,424 INFO L87 Difference]: Start difference. First operand 185 states and 262 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-21 01:53:12,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:53:12,176 INFO L93 Difference]: Finished difference Result 595 states and 847 transitions. [2023-12-21 01:53:12,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-21 01:53:12,177 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 132 [2023-12-21 01:53:12,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:53:12,181 INFO L225 Difference]: With dead ends: 595 [2023-12-21 01:53:12,181 INFO L226 Difference]: Without dead ends: 411 [2023-12-21 01:53:12,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=142, Invalid=508, Unknown=0, NotChecked=0, Total=650 [2023-12-21 01:53:12,187 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 466 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 01:53:12,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 779 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 01:53:12,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2023-12-21 01:53:12,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 337. [2023-12-21 01:53:12,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 272 states have (on average 1.3125) internal successors, (357), 274 states have internal predecessors, (357), 60 states have call successors, (60), 4 states have call predecessors, (60), 4 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-21 01:53:12,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 477 transitions. [2023-12-21 01:53:12,235 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 477 transitions. Word has length 132 [2023-12-21 01:53:12,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:53:12,236 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 477 transitions. [2023-12-21 01:53:12,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-21 01:53:12,239 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 477 transitions. [2023-12-21 01:53:12,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-21 01:53:12,245 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:53:12,245 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:53:12,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 01:53:12,245 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:53:12,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:53:12,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1886227570, now seen corresponding path program 1 times [2023-12-21 01:53:12,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:53:12,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728319653] [2023-12-21 01:53:12,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:53:12,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:53:12,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:14,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:53:14,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:14,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:53:14,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:14,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:53:14,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:14,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:53:14,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:14,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:53:14,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:14,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:53:14,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:14,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:53:14,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:14,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:53:14,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:14,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:53:14,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:14,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:53:14,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:14,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:53:14,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:14,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:53:14,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:14,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:53:14,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:14,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:53:14,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:14,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:53:14,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:14,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:53:14,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:14,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:53:14,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:14,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:53:14,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:14,135 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-21 01:53:14,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:53:14,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728319653] [2023-12-21 01:53:14,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728319653] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:53:14,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:53:14,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-12-21 01:53:14,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313081613] [2023-12-21 01:53:14,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:53:14,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-21 01:53:14,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:53:14,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-21 01:53:14,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2023-12-21 01:53:14,149 INFO L87 Difference]: Start difference. First operand 337 states and 477 transitions. Second operand has 18 states, 17 states have (on average 2.764705882352941) internal successors, (47), 18 states have internal predecessors, (47), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-21 01:53:18,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:53:18,147 INFO L93 Difference]: Finished difference Result 833 states and 1167 transitions. [2023-12-21 01:53:18,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-21 01:53:18,147 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.764705882352941) internal successors, (47), 18 states have internal predecessors, (47), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 134 [2023-12-21 01:53:18,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:53:18,154 INFO L225 Difference]: With dead ends: 833 [2023-12-21 01:53:18,154 INFO L226 Difference]: Without dead ends: 497 [2023-12-21 01:53:18,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=196, Invalid=860, Unknown=0, NotChecked=0, Total=1056 [2023-12-21 01:53:18,162 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 675 mSDsluCounter, 1162 mSDsCounter, 0 mSdLazyCounter, 1456 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 1602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-21 01:53:18,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [675 Valid, 1288 Invalid, 1602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1456 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-21 01:53:18,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2023-12-21 01:53:18,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 344. [2023-12-21 01:53:18,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 279 states have (on average 1.3082437275985663) internal successors, (365), 281 states have internal predecessors, (365), 60 states have call successors, (60), 4 states have call predecessors, (60), 4 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-21 01:53:18,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 485 transitions. [2023-12-21 01:53:18,221 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 485 transitions. Word has length 134 [2023-12-21 01:53:18,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:53:18,222 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 485 transitions. [2023-12-21 01:53:18,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.764705882352941) internal successors, (47), 18 states have internal predecessors, (47), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-21 01:53:18,222 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 485 transitions. [2023-12-21 01:53:18,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-21 01:53:18,223 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:53:18,223 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:53:18,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 01:53:18,223 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:53:18,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:53:18,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1742443630, now seen corresponding path program 1 times [2023-12-21 01:53:18,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:53:18,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997175019] [2023-12-21 01:53:18,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:53:18,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:53:18,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:18,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:53:18,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:18,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:53:18,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:18,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:53:18,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:18,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:53:18,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:18,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:53:18,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:18,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:53:18,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:18,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:53:18,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:18,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:53:18,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:18,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:53:18,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:18,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:53:18,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:18,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:53:18,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:18,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:53:18,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:18,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:53:18,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:18,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:53:18,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:18,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:53:18,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:18,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:53:18,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:18,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:53:18,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:18,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:53:18,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:18,348 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-21 01:53:18,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:53:18,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997175019] [2023-12-21 01:53:18,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997175019] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:53:18,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:53:18,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 01:53:18,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296395240] [2023-12-21 01:53:18,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:53:18,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 01:53:18,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:53:18,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 01:53:18,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:53:18,350 INFO L87 Difference]: Start difference. First operand 344 states and 485 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-21 01:53:18,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:53:18,398 INFO L93 Difference]: Finished difference Result 735 states and 1037 transitions. [2023-12-21 01:53:18,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 01:53:18,398 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 134 [2023-12-21 01:53:18,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:53:18,403 INFO L225 Difference]: With dead ends: 735 [2023-12-21 01:53:18,403 INFO L226 Difference]: Without dead ends: 392 [2023-12-21 01:53:18,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:53:18,404 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 60 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 01:53:18,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 454 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 01:53:18,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2023-12-21 01:53:18,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 356. [2023-12-21 01:53:18,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 291 states have (on average 1.29553264604811) internal successors, (377), 293 states have internal predecessors, (377), 60 states have call successors, (60), 4 states have call predecessors, (60), 4 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-21 01:53:18,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 497 transitions. [2023-12-21 01:53:18,431 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 497 transitions. Word has length 134 [2023-12-21 01:53:18,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:53:18,432 INFO L495 AbstractCegarLoop]: Abstraction has 356 states and 497 transitions. [2023-12-21 01:53:18,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-21 01:53:18,432 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 497 transitions. [2023-12-21 01:53:18,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-21 01:53:18,433 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:53:18,433 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:53:18,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 01:53:18,433 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:53:18,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:53:18,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1644467598, now seen corresponding path program 1 times [2023-12-21 01:53:18,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:53:18,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429770870] [2023-12-21 01:53:18,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:53:18,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:53:18,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:19,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:53:19,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:19,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:53:19,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:19,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:53:19,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:19,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:53:19,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:19,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:53:19,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:19,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:53:19,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:19,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:53:19,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:19,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:53:19,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:19,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:53:19,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:19,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:53:19,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:19,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:53:19,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:19,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:53:19,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:19,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:53:19,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:19,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:53:19,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:19,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:53:19,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:19,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:53:19,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:19,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:53:19,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:19,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:53:19,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:19,698 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-21 01:53:19,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:53:19,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429770870] [2023-12-21 01:53:19,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429770870] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:53:19,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:53:19,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-21 01:53:19,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974636325] [2023-12-21 01:53:19,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:53:19,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 01:53:19,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:53:19,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 01:53:19,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-12-21 01:53:19,700 INFO L87 Difference]: Start difference. First operand 356 states and 497 transitions. Second operand has 16 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 16 states have internal predecessors, (47), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-21 01:53:21,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:53:21,532 INFO L93 Difference]: Finished difference Result 875 states and 1211 transitions. [2023-12-21 01:53:21,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-21 01:53:21,533 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 16 states have internal predecessors, (47), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 134 [2023-12-21 01:53:21,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:53:21,535 INFO L225 Difference]: With dead ends: 875 [2023-12-21 01:53:21,535 INFO L226 Difference]: Without dead ends: 520 [2023-12-21 01:53:21,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=196, Invalid=734, Unknown=0, NotChecked=0, Total=930 [2023-12-21 01:53:21,537 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 685 mSDsluCounter, 1214 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 1377 SdHoareTripleChecker+Invalid, 1298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:53:21,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [685 Valid, 1377 Invalid, 1298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 1041 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-21 01:53:21,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2023-12-21 01:53:21,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 305. [2023-12-21 01:53:21,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 252 states have (on average 1.2976190476190477) internal successors, (327), 253 states have internal predecessors, (327), 48 states have call successors, (48), 4 states have call predecessors, (48), 4 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-21 01:53:21,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 423 transitions. [2023-12-21 01:53:21,579 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 423 transitions. Word has length 134 [2023-12-21 01:53:21,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:53:21,579 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 423 transitions. [2023-12-21 01:53:21,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 16 states have internal predecessors, (47), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-21 01:53:21,580 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 423 transitions. [2023-12-21 01:53:21,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-21 01:53:21,580 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:53:21,581 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:53:21,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 01:53:21,581 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:53:21,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:53:21,581 INFO L85 PathProgramCache]: Analyzing trace with hash 274472630, now seen corresponding path program 1 times [2023-12-21 01:53:21,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:53:21,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391424246] [2023-12-21 01:53:21,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:53:21,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:53:21,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:22,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:53:22,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:22,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:53:22,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:22,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:53:22,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:22,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:53:22,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:22,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:53:22,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:22,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:53:22,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:22,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:53:22,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:22,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:53:22,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:22,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:53:22,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:22,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:53:22,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:22,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:53:22,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:22,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:53:22,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:22,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:53:22,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:22,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:53:22,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:22,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:53:22,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:22,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:53:22,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:22,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:53:22,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:22,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:53:22,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:22,622 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-21 01:53:22,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:53:22,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391424246] [2023-12-21 01:53:22,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391424246] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:53:22,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:53:22,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-12-21 01:53:22,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953953560] [2023-12-21 01:53:22,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:53:22,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-21 01:53:22,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:53:22,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-21 01:53:22,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2023-12-21 01:53:22,624 INFO L87 Difference]: Start difference. First operand 305 states and 423 transitions. Second operand has 17 states, 16 states have (on average 3.0) internal successors, (48), 17 states have internal predecessors, (48), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-21 01:53:24,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:53:24,465 INFO L93 Difference]: Finished difference Result 798 states and 1104 transitions. [2023-12-21 01:53:24,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-21 01:53:24,469 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.0) internal successors, (48), 17 states have internal predecessors, (48), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 135 [2023-12-21 01:53:24,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:53:24,470 INFO L225 Difference]: With dead ends: 798 [2023-12-21 01:53:24,470 INFO L226 Difference]: Without dead ends: 494 [2023-12-21 01:53:24,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=216, Invalid=776, Unknown=0, NotChecked=0, Total=992 [2023-12-21 01:53:24,472 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 636 mSDsluCounter, 1040 mSDsCounter, 0 mSdLazyCounter, 1301 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 1242 SdHoareTripleChecker+Invalid, 1450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 1301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:53:24,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [636 Valid, 1242 Invalid, 1450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 1301 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-21 01:53:24,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2023-12-21 01:53:24,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 293. [2023-12-21 01:53:24,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 240 states have (on average 1.2958333333333334) internal successors, (311), 241 states have internal predecessors, (311), 48 states have call successors, (48), 4 states have call predecessors, (48), 4 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-21 01:53:24,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 407 transitions. [2023-12-21 01:53:24,507 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 407 transitions. Word has length 135 [2023-12-21 01:53:24,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:53:24,507 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 407 transitions. [2023-12-21 01:53:24,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.0) internal successors, (48), 17 states have internal predecessors, (48), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-21 01:53:24,507 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 407 transitions. [2023-12-21 01:53:24,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-21 01:53:24,509 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:53:24,509 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:53:24,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 01:53:24,509 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:53:24,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:53:24,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1985130588, now seen corresponding path program 1 times [2023-12-21 01:53:24,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:53:24,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310053840] [2023-12-21 01:53:24,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:53:24,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:53:24,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:25,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:53:25,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:25,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:53:25,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:25,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:53:25,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:25,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:53:25,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:25,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:53:25,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:25,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:53:25,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:25,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:53:25,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:25,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:53:25,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:25,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:53:25,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:25,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:53:25,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:25,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:53:25,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:25,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:53:25,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:25,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:53:25,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:25,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:53:25,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:25,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:53:25,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:25,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:53:25,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:25,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:53:25,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:25,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:53:25,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:25,601 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-21 01:53:25,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:53:25,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310053840] [2023-12-21 01:53:25,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310053840] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:53:25,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:53:25,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-12-21 01:53:25,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052696094] [2023-12-21 01:53:25,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:53:25,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-21 01:53:25,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:53:25,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-21 01:53:25,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2023-12-21 01:53:25,602 INFO L87 Difference]: Start difference. First operand 293 states and 407 transitions. Second operand has 17 states, 16 states have (on average 3.0) internal successors, (48), 17 states have internal predecessors, (48), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-21 01:53:29,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:53:29,697 INFO L93 Difference]: Finished difference Result 832 states and 1152 transitions. [2023-12-21 01:53:29,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-21 01:53:29,700 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.0) internal successors, (48), 17 states have internal predecessors, (48), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 135 [2023-12-21 01:53:29,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:53:29,702 INFO L225 Difference]: With dead ends: 832 [2023-12-21 01:53:29,702 INFO L226 Difference]: Without dead ends: 669 [2023-12-21 01:53:29,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=270, Invalid=990, Unknown=0, NotChecked=0, Total=1260 [2023-12-21 01:53:29,704 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 711 mSDsluCounter, 1404 mSDsCounter, 0 mSdLazyCounter, 1306 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 1552 SdHoareTripleChecker+Invalid, 1538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 1306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-21 01:53:29,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 1552 Invalid, 1538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 1306 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-21 01:53:29,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2023-12-21 01:53:29,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 313. [2023-12-21 01:53:29,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 260 states have (on average 1.3076923076923077) internal successors, (340), 261 states have internal predecessors, (340), 48 states have call successors, (48), 4 states have call predecessors, (48), 4 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-21 01:53:29,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 436 transitions. [2023-12-21 01:53:29,747 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 436 transitions. Word has length 135 [2023-12-21 01:53:29,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:53:29,747 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 436 transitions. [2023-12-21 01:53:29,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.0) internal successors, (48), 17 states have internal predecessors, (48), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-21 01:53:29,747 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 436 transitions. [2023-12-21 01:53:29,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 01:53:29,748 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:53:29,748 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:53:29,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 01:53:29,749 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:53:29,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:53:29,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1721258455, now seen corresponding path program 1 times [2023-12-21 01:53:29,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:53:29,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688301616] [2023-12-21 01:53:29,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:53:29,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:53:29,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:30,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:53:30,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:30,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:53:30,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:30,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:53:30,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:30,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:53:30,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:30,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:53:30,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:30,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:53:30,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:30,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:53:30,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:30,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:53:30,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:30,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:53:30,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:30,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:53:30,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:30,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:53:30,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:30,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:53:30,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:30,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:53:30,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:30,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:53:30,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:30,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:53:30,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:30,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:53:30,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:30,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:53:30,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:30,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:53:30,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:30,061 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-21 01:53:30,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:53:30,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688301616] [2023-12-21 01:53:30,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688301616] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:53:30,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:53:30,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 01:53:30,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760265108] [2023-12-21 01:53:30,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:53:30,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 01:53:30,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:53:30,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 01:53:30,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:53:30,063 INFO L87 Difference]: Start difference. First operand 313 states and 436 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-21 01:53:30,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:53:30,404 INFO L93 Difference]: Finished difference Result 878 states and 1217 transitions. [2023-12-21 01:53:30,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 01:53:30,404 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 136 [2023-12-21 01:53:30,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:53:30,406 INFO L225 Difference]: With dead ends: 878 [2023-12-21 01:53:30,406 INFO L226 Difference]: Without dead ends: 566 [2023-12-21 01:53:30,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-21 01:53:30,408 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 212 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 01:53:30,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 556 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 01:53:30,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2023-12-21 01:53:30,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 411. [2023-12-21 01:53:30,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 340 states have (on average 1.2911764705882354) internal successors, (439), 343 states have internal predecessors, (439), 64 states have call successors, (64), 6 states have call predecessors, (64), 6 states have return successors, (64), 61 states have call predecessors, (64), 64 states have call successors, (64) [2023-12-21 01:53:30,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 567 transitions. [2023-12-21 01:53:30,479 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 567 transitions. Word has length 136 [2023-12-21 01:53:30,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:53:30,482 INFO L495 AbstractCegarLoop]: Abstraction has 411 states and 567 transitions. [2023-12-21 01:53:30,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-21 01:53:30,482 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 567 transitions. [2023-12-21 01:53:30,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 01:53:30,484 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:53:30,484 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:53:30,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 01:53:30,484 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:53:30,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:53:30,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1466186102, now seen corresponding path program 1 times [2023-12-21 01:53:30,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:53:30,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991430383] [2023-12-21 01:53:30,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:53:30,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:53:30,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:30,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:53:30,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:30,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:53:30,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:30,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:53:30,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:30,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:53:30,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:30,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:53:30,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:30,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:53:30,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:30,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:53:30,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:30,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:53:30,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:30,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:53:30,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:30,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:53:30,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:30,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:53:30,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:30,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:53:30,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:30,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:53:30,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:30,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:53:30,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:30,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:53:30,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:30,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:53:30,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:30,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:53:30,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:30,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:53:30,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:30,776 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-21 01:53:30,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:53:30,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991430383] [2023-12-21 01:53:30,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991430383] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:53:30,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:53:30,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 01:53:30,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845986249] [2023-12-21 01:53:30,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:53:30,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 01:53:30,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:53:30,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 01:53:30,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:53:30,777 INFO L87 Difference]: Start difference. First operand 411 states and 567 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-21 01:53:30,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:53:30,965 INFO L93 Difference]: Finished difference Result 659 states and 878 transitions. [2023-12-21 01:53:30,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 01:53:30,965 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 136 [2023-12-21 01:53:30,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:53:30,967 INFO L225 Difference]: With dead ends: 659 [2023-12-21 01:53:30,967 INFO L226 Difference]: Without dead ends: 657 [2023-12-21 01:53:30,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-21 01:53:30,968 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 72 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:53:30,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 592 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 01:53:30,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2023-12-21 01:53:31,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 650. [2023-12-21 01:53:31,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 554 states have (on average 1.259927797833935) internal successors, (698), 562 states have internal predecessors, (698), 84 states have call successors, (84), 11 states have call predecessors, (84), 11 states have return successors, (84), 76 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-21 01:53:31,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 866 transitions. [2023-12-21 01:53:31,071 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 866 transitions. Word has length 136 [2023-12-21 01:53:31,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:53:31,072 INFO L495 AbstractCegarLoop]: Abstraction has 650 states and 866 transitions. [2023-12-21 01:53:31,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-21 01:53:31,072 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 866 transitions. [2023-12-21 01:53:31,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 01:53:31,072 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:53:31,073 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:53:31,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 01:53:31,073 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:53:31,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:53:31,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1048971979, now seen corresponding path program 1 times [2023-12-21 01:53:31,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:53:31,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863106758] [2023-12-21 01:53:31,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:53:31,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:53:31,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:31,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:53:31,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:31,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:53:31,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:31,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:53:31,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:31,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:53:31,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:31,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:53:31,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:31,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:53:31,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:31,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:53:31,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:31,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:53:31,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:31,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:53:31,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:31,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:53:31,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:31,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:53:31,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:31,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:53:31,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:31,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:53:31,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:31,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:53:31,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:31,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:53:31,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:31,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:53:31,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:31,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:53:31,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:31,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:53:31,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:31,966 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-21 01:53:31,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:53:31,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863106758] [2023-12-21 01:53:31,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863106758] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:53:31,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:53:31,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-12-21 01:53:31,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686399265] [2023-12-21 01:53:31,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:53:31,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-21 01:53:31,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:53:31,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-21 01:53:31,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2023-12-21 01:53:31,967 INFO L87 Difference]: Start difference. First operand 650 states and 866 transitions. Second operand has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 18 states have internal predecessors, (49), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-21 01:53:33,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:53:33,661 INFO L93 Difference]: Finished difference Result 1643 states and 2194 transitions. [2023-12-21 01:53:33,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-21 01:53:33,661 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 18 states have internal predecessors, (49), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 136 [2023-12-21 01:53:33,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:53:33,664 INFO L225 Difference]: With dead ends: 1643 [2023-12-21 01:53:33,664 INFO L226 Difference]: Without dead ends: 994 [2023-12-21 01:53:33,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=230, Invalid=1030, Unknown=0, NotChecked=0, Total=1260 [2023-12-21 01:53:33,666 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 388 mSDsluCounter, 1423 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 1586 SdHoareTripleChecker+Invalid, 1249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 01:53:33,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 1586 Invalid, 1249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 01:53:33,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2023-12-21 01:53:33,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 638. [2023-12-21 01:53:33,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 542 states have (on average 1.2583025830258303) internal successors, (682), 550 states have internal predecessors, (682), 84 states have call successors, (84), 11 states have call predecessors, (84), 11 states have return successors, (84), 76 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-21 01:53:33,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 850 transitions. [2023-12-21 01:53:33,772 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 850 transitions. Word has length 136 [2023-12-21 01:53:33,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:53:33,772 INFO L495 AbstractCegarLoop]: Abstraction has 638 states and 850 transitions. [2023-12-21 01:53:33,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 18 states have internal predecessors, (49), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-21 01:53:33,772 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 850 transitions. [2023-12-21 01:53:33,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-21 01:53:33,773 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:53:33,773 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:53:33,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 01:53:33,773 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:53:33,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:53:33,774 INFO L85 PathProgramCache]: Analyzing trace with hash -134561939, now seen corresponding path program 1 times [2023-12-21 01:53:33,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:53:33,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678673794] [2023-12-21 01:53:33,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:53:33,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:53:33,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:34,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:53:34,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:34,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:53:34,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:34,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:53:34,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:34,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:53:34,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:34,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:53:34,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:34,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:53:34,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:34,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:53:34,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:34,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:53:34,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:34,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:53:34,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:34,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:53:34,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:34,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:53:34,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:34,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:53:34,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:34,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:53:34,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:34,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:53:34,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:34,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:53:34,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:34,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:53:34,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:34,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:53:34,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:34,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:53:34,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:34,053 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-21 01:53:34,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:53:34,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678673794] [2023-12-21 01:53:34,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678673794] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:53:34,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:53:34,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 01:53:34,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207902191] [2023-12-21 01:53:34,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:53:34,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 01:53:34,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:53:34,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 01:53:34,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:53:34,055 INFO L87 Difference]: Start difference. First operand 638 states and 850 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-21 01:53:34,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:53:34,355 INFO L93 Difference]: Finished difference Result 1416 states and 1901 transitions. [2023-12-21 01:53:34,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 01:53:34,356 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 137 [2023-12-21 01:53:34,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:53:34,359 INFO L225 Difference]: With dead ends: 1416 [2023-12-21 01:53:34,359 INFO L226 Difference]: Without dead ends: 1048 [2023-12-21 01:53:34,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2023-12-21 01:53:34,361 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 168 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:53:34,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 945 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 01:53:34,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2023-12-21 01:53:34,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 829. [2023-12-21 01:53:34,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 719 states have (on average 1.2726008344923505) internal successors, (915), 729 states have internal predecessors, (915), 96 states have call successors, (96), 13 states have call predecessors, (96), 13 states have return successors, (96), 86 states have call predecessors, (96), 96 states have call successors, (96) [2023-12-21 01:53:34,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 1107 transitions. [2023-12-21 01:53:34,477 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 1107 transitions. Word has length 137 [2023-12-21 01:53:34,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:53:34,477 INFO L495 AbstractCegarLoop]: Abstraction has 829 states and 1107 transitions. [2023-12-21 01:53:34,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-21 01:53:34,477 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 1107 transitions. [2023-12-21 01:53:34,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-21 01:53:34,478 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:53:34,478 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:53:34,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 01:53:34,478 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:53:34,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:53:34,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1789263100, now seen corresponding path program 1 times [2023-12-21 01:53:34,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:53:34,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442484364] [2023-12-21 01:53:34,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:53:34,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:53:34,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:34,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:53:34,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:34,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:53:34,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:34,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:53:34,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:34,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:53:34,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:34,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:53:34,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:34,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:53:34,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:34,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:53:34,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:34,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:53:34,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:34,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:53:34,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:34,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:53:34,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:34,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:53:34,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:34,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:53:34,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:34,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:53:34,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:34,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:53:34,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:34,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:53:34,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:34,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:53:34,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:34,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:53:34,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:34,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:53:34,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:34,711 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-21 01:53:34,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:53:34,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442484364] [2023-12-21 01:53:34,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442484364] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:53:34,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:53:34,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 01:53:34,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926943969] [2023-12-21 01:53:34,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:53:34,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 01:53:34,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:53:34,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 01:53:34,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:53:34,713 INFO L87 Difference]: Start difference. First operand 829 states and 1107 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-21 01:53:35,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:53:35,162 INFO L93 Difference]: Finished difference Result 2048 states and 2718 transitions. [2023-12-21 01:53:35,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 01:53:35,163 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 138 [2023-12-21 01:53:35,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:53:35,166 INFO L225 Difference]: With dead ends: 2048 [2023-12-21 01:53:35,166 INFO L226 Difference]: Without dead ends: 1220 [2023-12-21 01:53:35,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 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 01:53:35,168 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 87 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 01:53:35,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 522 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 01:53:35,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2023-12-21 01:53:35,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 961. [2023-12-21 01:53:35,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 961 states, 851 states have (on average 1.2573443008225618) internal successors, (1070), 861 states have internal predecessors, (1070), 96 states have call successors, (96), 13 states have call predecessors, (96), 13 states have return successors, (96), 86 states have call predecessors, (96), 96 states have call successors, (96) [2023-12-21 01:53:35,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1262 transitions. [2023-12-21 01:53:35,297 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1262 transitions. Word has length 138 [2023-12-21 01:53:35,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:53:35,297 INFO L495 AbstractCegarLoop]: Abstraction has 961 states and 1262 transitions. [2023-12-21 01:53:35,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-21 01:53:35,297 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1262 transitions. [2023-12-21 01:53:35,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-21 01:53:35,298 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:53:35,298 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:53:35,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 01:53:35,299 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:53:35,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:53:35,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1360434925, now seen corresponding path program 1 times [2023-12-21 01:53:35,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:53:35,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574001698] [2023-12-21 01:53:35,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:53:35,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:53:35,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:35,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:53:35,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:35,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:53:35,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:35,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:53:35,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:35,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:53:35,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:35,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:53:35,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:35,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:53:35,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:35,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:53:35,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:35,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:53:35,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:35,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:53:35,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:35,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:53:35,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:35,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:53:35,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:35,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:53:35,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:35,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:53:35,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:35,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:53:35,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:35,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:53:35,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:35,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:53:35,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:35,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:53:35,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:35,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:53:35,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:35,419 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-21 01:53:35,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:53:35,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574001698] [2023-12-21 01:53:35,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574001698] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:53:35,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:53:35,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 01:53:35,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4554427] [2023-12-21 01:53:35,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:53:35,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 01:53:35,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:53:35,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 01:53:35,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:53:35,420 INFO L87 Difference]: Start difference. First operand 961 states and 1262 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-21 01:53:35,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:53:35,581 INFO L93 Difference]: Finished difference Result 2416 states and 3181 transitions. [2023-12-21 01:53:35,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 01:53:35,582 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 138 [2023-12-21 01:53:35,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:53:35,585 INFO L225 Difference]: With dead ends: 2416 [2023-12-21 01:53:35,585 INFO L226 Difference]: Without dead ends: 1456 [2023-12-21 01:53:35,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 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 01:53:35,587 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 63 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 01:53:35,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 664 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 01:53:35,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2023-12-21 01:53:35,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1089. [2023-12-21 01:53:35,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1089 states, 979 states have (on average 1.2563840653728293) internal successors, (1230), 989 states have internal predecessors, (1230), 96 states have call successors, (96), 13 states have call predecessors, (96), 13 states have return successors, (96), 86 states have call predecessors, (96), 96 states have call successors, (96) [2023-12-21 01:53:35,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1089 states to 1089 states and 1422 transitions. [2023-12-21 01:53:35,718 INFO L78 Accepts]: Start accepts. Automaton has 1089 states and 1422 transitions. Word has length 138 [2023-12-21 01:53:35,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:53:35,719 INFO L495 AbstractCegarLoop]: Abstraction has 1089 states and 1422 transitions. [2023-12-21 01:53:35,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-21 01:53:35,719 INFO L276 IsEmpty]: Start isEmpty. Operand 1089 states and 1422 transitions. [2023-12-21 01:53:35,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-21 01:53:35,720 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:53:35,720 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:53:35,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 01:53:35,721 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:53:35,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:53:35,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1435813800, now seen corresponding path program 1 times [2023-12-21 01:53:35,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:53:35,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608483259] [2023-12-21 01:53:35,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:53:35,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:53:35,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:36,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:53:36,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:36,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:53:36,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:36,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:53:36,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:36,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:53:36,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:36,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:53:36,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:36,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:53:36,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:36,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:53:36,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:36,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:53:36,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:36,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:53:36,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:36,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:53:36,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:36,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:53:36,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:36,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:53:36,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:36,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:53:36,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:36,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:53:36,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:36,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:53:36,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:36,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:53:36,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:36,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:53:36,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:36,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:53:36,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:36,520 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-21 01:53:36,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:53:36,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608483259] [2023-12-21 01:53:36,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608483259] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:53:36,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:53:36,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-12-21 01:53:36,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51889014] [2023-12-21 01:53:36,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:53:36,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-21 01:53:36,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:53:36,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-21 01:53:36,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2023-12-21 01:53:36,522 INFO L87 Difference]: Start difference. First operand 1089 states and 1422 transitions. Second operand has 17 states, 16 states have (on average 3.25) internal successors, (52), 17 states have internal predecessors, (52), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-21 01:53:38,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:53:38,382 INFO L93 Difference]: Finished difference Result 2728 states and 3543 transitions. [2023-12-21 01:53:38,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-21 01:53:38,383 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.25) internal successors, (52), 17 states have internal predecessors, (52), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 139 [2023-12-21 01:53:38,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:53:38,387 INFO L225 Difference]: With dead ends: 2728 [2023-12-21 01:53:38,387 INFO L226 Difference]: Without dead ends: 1640 [2023-12-21 01:53:38,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=238, Invalid=1022, Unknown=0, NotChecked=0, Total=1260 [2023-12-21 01:53:38,391 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 663 mSDsluCounter, 1019 mSDsCounter, 0 mSdLazyCounter, 1287 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 1205 SdHoareTripleChecker+Invalid, 1526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 1287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 01:53:38,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [663 Valid, 1205 Invalid, 1526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 1287 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 01:53:38,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2023-12-21 01:53:38,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1202. [2023-12-21 01:53:38,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1202 states, 1048 states have (on average 1.2461832061068703) internal successors, (1306), 1060 states have internal predecessors, (1306), 132 states have call successors, (132), 21 states have call predecessors, (132), 21 states have return successors, (132), 120 states have call predecessors, (132), 132 states have call successors, (132) [2023-12-21 01:53:38,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1202 states to 1202 states and 1570 transitions. [2023-12-21 01:53:38,597 INFO L78 Accepts]: Start accepts. Automaton has 1202 states and 1570 transitions. Word has length 139 [2023-12-21 01:53:38,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:53:38,598 INFO L495 AbstractCegarLoop]: Abstraction has 1202 states and 1570 transitions. [2023-12-21 01:53:38,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.25) internal successors, (52), 17 states have internal predecessors, (52), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-21 01:53:38,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1202 states and 1570 transitions. [2023-12-21 01:53:38,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-21 01:53:38,599 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:53:38,599 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:53:38,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 01:53:38,599 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:53:38,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:53:38,600 INFO L85 PathProgramCache]: Analyzing trace with hash 555401097, now seen corresponding path program 1 times [2023-12-21 01:53:38,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:53:38,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427496342] [2023-12-21 01:53:38,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:53:38,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:53:38,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:38,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:53:38,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:38,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:53:38,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:38,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:53:38,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:38,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:53:38,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:38,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:53:38,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:38,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:53:38,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:38,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:53:38,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:38,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:53:38,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:38,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:53:38,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:38,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:53:38,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:38,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:53:38,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:38,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:53:38,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:38,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:53:38,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:38,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:53:38,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:38,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:53:38,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:38,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:53:38,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:38,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:53:38,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:38,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:53:38,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:38,716 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-21 01:53:38,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:53:38,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427496342] [2023-12-21 01:53:38,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427496342] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:53:38,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:53:38,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 01:53:38,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439788120] [2023-12-21 01:53:38,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:53:38,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 01:53:38,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:53:38,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 01:53:38,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:53:38,718 INFO L87 Difference]: Start difference. First operand 1202 states and 1570 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-21 01:53:38,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:53:38,929 INFO L93 Difference]: Finished difference Result 2689 states and 3518 transitions. [2023-12-21 01:53:38,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 01:53:38,930 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 139 [2023-12-21 01:53:38,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:53:38,935 INFO L225 Difference]: With dead ends: 2689 [2023-12-21 01:53:38,935 INFO L226 Difference]: Without dead ends: 1488 [2023-12-21 01:53:38,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-12-21 01:53:38,939 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 94 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 01:53:38,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 695 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 01:53:38,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1488 states. [2023-12-21 01:53:39,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1488 to 1223. [2023-12-21 01:53:39,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 1069 states have (on average 1.2413470533208606) internal successors, (1327), 1081 states have internal predecessors, (1327), 132 states have call successors, (132), 21 states have call predecessors, (132), 21 states have return successors, (132), 120 states have call predecessors, (132), 132 states have call successors, (132) [2023-12-21 01:53:39,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 1591 transitions. [2023-12-21 01:53:39,127 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 1591 transitions. Word has length 139 [2023-12-21 01:53:39,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:53:39,127 INFO L495 AbstractCegarLoop]: Abstraction has 1223 states and 1591 transitions. [2023-12-21 01:53:39,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-21 01:53:39,128 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 1591 transitions. [2023-12-21 01:53:39,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-21 01:53:39,129 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:53:39,129 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:53:39,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 01:53:39,129 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:53:39,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:53:39,129 INFO L85 PathProgramCache]: Analyzing trace with hash -124657273, now seen corresponding path program 1 times [2023-12-21 01:53:39,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:53:39,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440127052] [2023-12-21 01:53:39,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:53:39,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:53:39,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:39,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:53:39,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:39,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:53:39,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:39,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:53:39,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:39,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:53:39,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:39,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:53:39,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:39,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:53:39,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:39,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:53:39,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:39,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:53:39,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:39,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:53:39,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:39,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:53:39,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:39,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:53:39,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:39,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:53:39,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:39,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:53:39,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:39,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:53:39,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:39,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:53:39,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:39,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:53:39,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:39,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:53:39,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:39,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:53:39,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:39,253 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-21 01:53:39,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:53:39,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440127052] [2023-12-21 01:53:39,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440127052] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:53:39,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:53:39,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 01:53:39,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665524408] [2023-12-21 01:53:39,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:53:39,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 01:53:39,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:53:39,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 01:53:39,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:53:39,255 INFO L87 Difference]: Start difference. First operand 1223 states and 1591 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-21 01:53:39,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:53:39,467 INFO L93 Difference]: Finished difference Result 2160 states and 2825 transitions. [2023-12-21 01:53:39,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 01:53:39,468 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 139 [2023-12-21 01:53:39,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:53:39,472 INFO L225 Difference]: With dead ends: 2160 [2023-12-21 01:53:39,472 INFO L226 Difference]: Without dead ends: 1346 [2023-12-21 01:53:39,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 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 01:53:39,474 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 72 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 01:53:39,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 630 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 01:53:39,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1346 states. [2023-12-21 01:53:39,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1346 to 1194. [2023-12-21 01:53:39,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1194 states, 1040 states have (on average 1.2365384615384616) internal successors, (1286), 1052 states have internal predecessors, (1286), 132 states have call successors, (132), 21 states have call predecessors, (132), 21 states have return successors, (132), 120 states have call predecessors, (132), 132 states have call successors, (132) [2023-12-21 01:53:39,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 1550 transitions. [2023-12-21 01:53:39,657 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 1550 transitions. Word has length 139 [2023-12-21 01:53:39,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:53:39,657 INFO L495 AbstractCegarLoop]: Abstraction has 1194 states and 1550 transitions. [2023-12-21 01:53:39,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-21 01:53:39,657 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 1550 transitions. [2023-12-21 01:53:39,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-21 01:53:39,658 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:53:39,658 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:53:39,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 01:53:39,659 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:53:39,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:53:39,659 INFO L85 PathProgramCache]: Analyzing trace with hash -535845215, now seen corresponding path program 1 times [2023-12-21 01:53:39,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:53:39,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046448425] [2023-12-21 01:53:39,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:53:39,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:53:39,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:39,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:53:39,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:39,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:53:39,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:39,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:53:39,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:39,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:53:39,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:39,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:53:39,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:39,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:53:39,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:39,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:53:39,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:39,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:53:39,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:39,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:53:39,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:39,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:53:39,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:39,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:53:39,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:39,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:53:39,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:39,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:53:39,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:39,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:53:39,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:39,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:53:39,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:39,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:53:39,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:39,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:53:39,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:39,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:53:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:39,950 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-21 01:53:39,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:53:39,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046448425] [2023-12-21 01:53:39,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046448425] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:53:39,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:53:39,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 01:53:39,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071059900] [2023-12-21 01:53:39,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:53:39,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 01:53:39,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:53:39,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 01:53:39,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:53:39,951 INFO L87 Difference]: Start difference. First operand 1194 states and 1550 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, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-21 01:53:40,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:53:40,470 INFO L93 Difference]: Finished difference Result 2446 states and 3166 transitions. [2023-12-21 01:53:40,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 01:53:40,471 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, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 140 [2023-12-21 01:53:40,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:53:40,479 INFO L225 Difference]: With dead ends: 2446 [2023-12-21 01:53:40,479 INFO L226 Difference]: Without dead ends: 1253 [2023-12-21 01:53:40,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-21 01:53:40,482 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 157 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 01:53:40,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 353 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 01:53:40,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1253 states. [2023-12-21 01:53:40,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1253 to 1128. [2023-12-21 01:53:40,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1128 states, 961 states have (on average 1.2164412070759625) internal successors, (1169), 971 states have internal predecessors, (1169), 144 states have call successors, (144), 22 states have call predecessors, (144), 22 states have return successors, (144), 134 states have call predecessors, (144), 144 states have call successors, (144) [2023-12-21 01:53:40,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1128 states to 1128 states and 1457 transitions. [2023-12-21 01:53:40,689 INFO L78 Accepts]: Start accepts. Automaton has 1128 states and 1457 transitions. Word has length 140 [2023-12-21 01:53:40,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:53:40,689 INFO L495 AbstractCegarLoop]: Abstraction has 1128 states and 1457 transitions. [2023-12-21 01:53:40,690 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, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-21 01:53:40,690 INFO L276 IsEmpty]: Start isEmpty. Operand 1128 states and 1457 transitions. [2023-12-21 01:53:40,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-21 01:53:40,691 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:53:40,691 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:53:40,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 01:53:40,691 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:53:40,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:53:40,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1367557715, now seen corresponding path program 1 times [2023-12-21 01:53:40,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:53:40,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131777641] [2023-12-21 01:53:40,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:53:40,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:53:40,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:41,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:53:41,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:41,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:53:41,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:41,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:53:41,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:41,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:53:41,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:41,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:53:41,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:41,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:53:41,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:41,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:53:41,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:41,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:53:41,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:41,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:53:41,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:41,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:53:41,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:41,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:53:41,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:41,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:53:41,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:41,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:53:41,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:41,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:53:41,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:41,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:53:41,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:41,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:53:41,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:41,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:53:41,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:41,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:53:41,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:41,019 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-21 01:53:41,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:53:41,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131777641] [2023-12-21 01:53:41,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131777641] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:53:41,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:53:41,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 01:53:41,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187094115] [2023-12-21 01:53:41,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:53:41,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 01:53:41,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:53:41,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 01:53:41,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 01:53:41,020 INFO L87 Difference]: Start difference. First operand 1128 states and 1457 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-21 01:53:41,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:53:41,498 INFO L93 Difference]: Finished difference Result 2275 states and 2943 transitions. [2023-12-21 01:53:41,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-21 01:53:41,499 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 140 [2023-12-21 01:53:41,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:53:41,503 INFO L225 Difference]: With dead ends: 2275 [2023-12-21 01:53:41,503 INFO L226 Difference]: Without dead ends: 1560 [2023-12-21 01:53:41,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=371, Unknown=0, NotChecked=0, Total=506 [2023-12-21 01:53:41,506 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 212 mSDsluCounter, 1083 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 01:53:41,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 1266 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 01:53:41,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560 states. [2023-12-21 01:53:41,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1560 to 1239. [2023-12-21 01:53:41,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1239 states, 1072 states have (on average 1.226679104477612) internal successors, (1315), 1082 states have internal predecessors, (1315), 144 states have call successors, (144), 22 states have call predecessors, (144), 22 states have return successors, (144), 134 states have call predecessors, (144), 144 states have call successors, (144) [2023-12-21 01:53:41,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 1603 transitions. [2023-12-21 01:53:41,727 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 1603 transitions. Word has length 140 [2023-12-21 01:53:41,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:53:41,727 INFO L495 AbstractCegarLoop]: Abstraction has 1239 states and 1603 transitions. [2023-12-21 01:53:41,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-21 01:53:41,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 1603 transitions. [2023-12-21 01:53:41,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-21 01:53:41,728 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:53:41,728 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:53:41,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 01:53:41,728 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:53:41,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:53:41,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1148702997, now seen corresponding path program 1 times [2023-12-21 01:53:41,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:53:41,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572274705] [2023-12-21 01:53:41,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:53:41,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:53:41,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:41,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:53:41,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:41,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:53:41,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:41,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:53:41,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:41,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:53:41,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:41,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:53:41,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:41,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:53:41,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:41,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:53:41,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:41,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:53:41,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:41,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:53:41,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:41,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:53:41,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:41,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:53:41,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:41,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:53:41,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:41,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:53:41,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:41,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:53:41,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:41,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:53:41,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:41,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:53:41,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:41,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:53:41,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:41,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:53:41,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:41,830 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-21 01:53:41,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:53:41,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572274705] [2023-12-21 01:53:41,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572274705] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:53:41,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:53:41,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 01:53:41,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803026981] [2023-12-21 01:53:41,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:53:41,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 01:53:41,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:53:41,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 01:53:41,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:53:41,832 INFO L87 Difference]: Start difference. First operand 1239 states and 1603 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, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-21 01:53:42,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:53:42,116 INFO L93 Difference]: Finished difference Result 2734 states and 3519 transitions. [2023-12-21 01:53:42,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 01:53:42,117 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, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 140 [2023-12-21 01:53:42,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:53:42,121 INFO L225 Difference]: With dead ends: 2734 [2023-12-21 01:53:42,122 INFO L226 Difference]: Without dead ends: 1496 [2023-12-21 01:53:42,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 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 01:53:42,125 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 56 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 01:53:42,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 663 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 01:53:42,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2023-12-21 01:53:42,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1246. [2023-12-21 01:53:42,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1246 states, 1079 states have (on average 1.2252085264133457) internal successors, (1322), 1089 states have internal predecessors, (1322), 144 states have call successors, (144), 22 states have call predecessors, (144), 22 states have return successors, (144), 134 states have call predecessors, (144), 144 states have call successors, (144) [2023-12-21 01:53:42,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1246 states to 1246 states and 1610 transitions. [2023-12-21 01:53:42,349 INFO L78 Accepts]: Start accepts. Automaton has 1246 states and 1610 transitions. Word has length 140 [2023-12-21 01:53:42,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:53:42,349 INFO L495 AbstractCegarLoop]: Abstraction has 1246 states and 1610 transitions. [2023-12-21 01:53:42,349 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, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-21 01:53:42,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1246 states and 1610 transitions. [2023-12-21 01:53:42,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-21 01:53:42,351 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:53:42,352 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:53:42,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 01:53:42,352 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:53:42,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:53:42,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1725001876, now seen corresponding path program 1 times [2023-12-21 01:53:42,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:53:42,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349628201] [2023-12-21 01:53:42,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:53:42,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:53:42,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:42,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:53:42,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:42,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:53:42,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:42,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:53:42,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:42,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:53:42,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:42,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:53:42,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:42,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:53:42,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:42,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:53:42,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:42,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:53:42,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:42,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:53:42,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:42,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:53:42,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:42,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:53:42,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:42,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:53:42,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:42,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:53:42,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:42,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:53:42,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:42,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:53:42,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:42,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:53:42,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:42,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:53:42,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:42,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:53:42,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:42,573 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-21 01:53:42,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:53:42,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349628201] [2023-12-21 01:53:42,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349628201] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:53:42,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:53:42,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 01:53:42,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38003461] [2023-12-21 01:53:42,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:53:42,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 01:53:42,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:53:42,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 01:53:42,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:53:42,574 INFO L87 Difference]: Start difference. First operand 1246 states and 1610 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, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-21 01:53:42,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:53:42,966 INFO L93 Difference]: Finished difference Result 2530 states and 3262 transitions. [2023-12-21 01:53:42,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 01:53:42,967 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, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 140 [2023-12-21 01:53:42,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:53:42,970 INFO L225 Difference]: With dead ends: 2530 [2023-12-21 01:53:42,971 INFO L226 Difference]: Without dead ends: 1285 [2023-12-21 01:53:42,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:53:42,973 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 86 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 01:53:42,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 489 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 01:53:42,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1285 states. [2023-12-21 01:53:43,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1285 to 971. [2023-12-21 01:53:43,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 825 states have (on average 1.229090909090909) internal successors, (1014), 833 states have internal predecessors, (1014), 124 states have call successors, (124), 21 states have call predecessors, (124), 21 states have return successors, (124), 116 states have call predecessors, (124), 124 states have call successors, (124) [2023-12-21 01:53:43,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1262 transitions. [2023-12-21 01:53:43,222 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1262 transitions. Word has length 140 [2023-12-21 01:53:43,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:53:43,223 INFO L495 AbstractCegarLoop]: Abstraction has 971 states and 1262 transitions. [2023-12-21 01:53:43,223 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, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-21 01:53:43,223 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1262 transitions. [2023-12-21 01:53:43,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-21 01:53:43,224 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:53:43,224 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:53:43,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-21 01:53:43,224 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:53:43,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:53:43,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1652213275, now seen corresponding path program 1 times [2023-12-21 01:53:43,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:53:43,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352886692] [2023-12-21 01:53:43,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:53:43,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:53:43,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:43,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:53:43,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:43,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:53:43,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:43,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:53:43,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:43,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:53:43,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:43,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:53:43,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:43,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:53:43,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:43,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:53:43,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:43,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:53:43,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:43,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:53:43,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:43,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:53:43,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:43,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:53:43,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:43,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:53:43,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:43,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:53:43,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:43,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:53:43,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:43,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:53:43,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:43,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:53:43,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:43,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:53:43,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:43,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:53:43,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:43,837 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-21 01:53:43,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:53:43,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352886692] [2023-12-21 01:53:43,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352886692] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:53:43,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:53:43,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 01:53:43,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205942807] [2023-12-21 01:53:43,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:53:43,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 01:53:43,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:53:43,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 01:53:43,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-12-21 01:53:43,839 INFO L87 Difference]: Start difference. First operand 971 states and 1262 transitions. Second operand has 11 states, 10 states have (on average 5.3) internal successors, (53), 11 states have internal predecessors, (53), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-21 01:53:44,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:53:44,692 INFO L93 Difference]: Finished difference Result 2346 states and 3020 transitions. [2023-12-21 01:53:44,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 01:53:44,692 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.3) internal successors, (53), 11 states have internal predecessors, (53), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 140 [2023-12-21 01:53:44,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:53:44,696 INFO L225 Difference]: With dead ends: 2346 [2023-12-21 01:53:44,696 INFO L226 Difference]: Without dead ends: 1376 [2023-12-21 01:53:44,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2023-12-21 01:53:44,698 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 480 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 01:53:44,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 617 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 01:53:44,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2023-12-21 01:53:45,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1027. [2023-12-21 01:53:45,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1027 states, 862 states have (on average 1.2134570765661252) internal successors, (1046), 872 states have internal predecessors, (1046), 140 states have call successors, (140), 24 states have call predecessors, (140), 24 states have return successors, (140), 130 states have call predecessors, (140), 140 states have call successors, (140) [2023-12-21 01:53:45,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 1326 transitions. [2023-12-21 01:53:45,045 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 1326 transitions. Word has length 140 [2023-12-21 01:53:45,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:53:45,045 INFO L495 AbstractCegarLoop]: Abstraction has 1027 states and 1326 transitions. [2023-12-21 01:53:45,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.3) internal successors, (53), 11 states have internal predecessors, (53), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-21 01:53:45,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 1326 transitions. [2023-12-21 01:53:45,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-21 01:53:45,053 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:53:45,053 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:53:45,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-21 01:53:45,053 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:53:45,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:53:45,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1940564973, now seen corresponding path program 1 times [2023-12-21 01:53:45,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:53:45,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114197281] [2023-12-21 01:53:45,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:53:45,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:53:45,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:46,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:53:46,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:46,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:53:46,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:46,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:53:46,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:46,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:53:46,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:46,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:53:46,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:46,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:53:46,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:46,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:53:46,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:46,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:53:46,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:46,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:53:46,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:46,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:53:46,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:46,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:53:46,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:46,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:53:46,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:46,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:53:46,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:46,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:53:46,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:46,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:53:46,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:46,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:53:46,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:46,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:53:46,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:46,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:53:46,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:46,698 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-21 01:53:46,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:53:46,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114197281] [2023-12-21 01:53:46,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114197281] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:53:46,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:53:46,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2023-12-21 01:53:46,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269057918] [2023-12-21 01:53:46,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:53:46,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-21 01:53:46,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:53:46,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-21 01:53:46,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=490, Unknown=0, NotChecked=0, Total=552 [2023-12-21 01:53:46,699 INFO L87 Difference]: Start difference. First operand 1027 states and 1326 transitions. Second operand has 24 states, 23 states have (on average 2.391304347826087) internal successors, (55), 23 states have internal predecessors, (55), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-21 01:53:51,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:53:51,306 INFO L93 Difference]: Finished difference Result 1592 states and 2023 transitions. [2023-12-21 01:53:51,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-12-21 01:53:51,307 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.391304347826087) internal successors, (55), 23 states have internal predecessors, (55), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 142 [2023-12-21 01:53:51,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:53:51,311 INFO L225 Difference]: With dead ends: 1592 [2023-12-21 01:53:51,311 INFO L226 Difference]: Without dead ends: 1590 [2023-12-21 01:53:51,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1227 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=860, Invalid=4252, Unknown=0, NotChecked=0, Total=5112 [2023-12-21 01:53:51,314 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 927 mSDsluCounter, 1292 mSDsCounter, 0 mSdLazyCounter, 1614 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 927 SdHoareTripleChecker+Valid, 1402 SdHoareTripleChecker+Invalid, 1870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 1614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-21 01:53:51,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [927 Valid, 1402 Invalid, 1870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 1614 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-21 01:53:51,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1590 states. [2023-12-21 01:53:51,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1590 to 1135. [2023-12-21 01:53:51,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 960 states have (on average 1.2010416666666666) internal successors, (1153), 972 states have internal predecessors, (1153), 148 states have call successors, (148), 26 states have call predecessors, (148), 26 states have return successors, (148), 136 states have call predecessors, (148), 148 states have call successors, (148) [2023-12-21 01:53:51,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 1449 transitions. [2023-12-21 01:53:51,638 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 1449 transitions. Word has length 142 [2023-12-21 01:53:51,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:53:51,639 INFO L495 AbstractCegarLoop]: Abstraction has 1135 states and 1449 transitions. [2023-12-21 01:53:51,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.391304347826087) internal successors, (55), 23 states have internal predecessors, (55), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-21 01:53:51,639 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 1449 transitions. [2023-12-21 01:53:51,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-21 01:53:51,640 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:53:51,640 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:53:51,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-21 01:53:51,640 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:53:51,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:53:51,640 INFO L85 PathProgramCache]: Analyzing trace with hash 515087050, now seen corresponding path program 1 times [2023-12-21 01:53:51,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:53:51,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585517273] [2023-12-21 01:53:51,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:53:51,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:53:51,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:52,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:53:52,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:52,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:53:52,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:52,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:53:52,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:52,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:53:52,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:52,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:53:52,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:52,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:53:52,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:52,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:53:52,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:52,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:53:52,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:52,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:53:52,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:52,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:53:52,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:52,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:53:52,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:52,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:53:52,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:52,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:53:52,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:52,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:53:52,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:52,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:53:52,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:52,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:53:52,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:52,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:53:52,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:52,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:53:52,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:52,066 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-21 01:53:52,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:53:52,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585517273] [2023-12-21 01:53:52,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585517273] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:53:52,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:53:52,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 01:53:52,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980104215] [2023-12-21 01:53:52,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:53:52,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 01:53:52,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:53:52,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 01:53:52,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-12-21 01:53:52,070 INFO L87 Difference]: Start difference. First operand 1135 states and 1449 transitions. Second operand has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-21 01:53:53,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:53:53,042 INFO L93 Difference]: Finished difference Result 2662 states and 3381 transitions. [2023-12-21 01:53:53,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 01:53:53,045 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 142 [2023-12-21 01:53:53,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:53:53,058 INFO L225 Difference]: With dead ends: 2662 [2023-12-21 01:53:53,058 INFO L226 Difference]: Without dead ends: 1528 [2023-12-21 01:53:53,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2023-12-21 01:53:53,060 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 314 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 01:53:53,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 762 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 01:53:53,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2023-12-21 01:53:53,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 1151. [2023-12-21 01:53:53,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 976 states have (on average 1.1926229508196722) internal successors, (1164), 988 states have internal predecessors, (1164), 148 states have call successors, (148), 26 states have call predecessors, (148), 26 states have return successors, (148), 136 states have call predecessors, (148), 148 states have call successors, (148) [2023-12-21 01:53:53,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 1460 transitions. [2023-12-21 01:53:53,396 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 1460 transitions. Word has length 142 [2023-12-21 01:53:53,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:53:53,396 INFO L495 AbstractCegarLoop]: Abstraction has 1151 states and 1460 transitions. [2023-12-21 01:53:53,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-21 01:53:53,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 1460 transitions. [2023-12-21 01:53:53,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-21 01:53:53,405 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:53:53,405 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:53:53,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-21 01:53:53,405 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:53:53,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:53:53,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1721710255, now seen corresponding path program 1 times [2023-12-21 01:53:53,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:53:53,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582450168] [2023-12-21 01:53:53,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:53:53,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:53:53,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:53,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:53:53,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:53,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:53:53,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:53,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:53:53,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:53,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:53:53,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:53,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:53:53,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:53,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:53:53,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:53,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:53:53,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:53,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:53:53,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:53,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:53:53,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:53,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:53:53,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:53,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:53:53,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:53,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:53:53,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:53,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:53:53,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:53,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:53:53,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:53,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:53:53,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:53,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:53:53,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:53,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:53:53,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:53,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:53:53,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:53,541 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-21 01:53:53,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:53:53,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582450168] [2023-12-21 01:53:53,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582450168] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:53:53,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:53:53,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 01:53:53,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392363330] [2023-12-21 01:53:53,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:53:53,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 01:53:53,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:53:53,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 01:53:53,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:53:53,542 INFO L87 Difference]: Start difference. First operand 1151 states and 1460 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, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-21 01:53:53,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:53:53,896 INFO L93 Difference]: Finished difference Result 2562 states and 3226 transitions. [2023-12-21 01:53:53,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 01:53:53,897 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, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 142 [2023-12-21 01:53:53,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:53:53,901 INFO L225 Difference]: With dead ends: 2562 [2023-12-21 01:53:53,901 INFO L226 Difference]: Without dead ends: 1412 [2023-12-21 01:53:53,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 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 01:53:53,903 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 33 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 01:53:53,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 572 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 01:53:53,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2023-12-21 01:53:54,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 1336. [2023-12-21 01:53:54,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1336 states, 1161 states have (on average 1.190353143841516) internal successors, (1382), 1173 states have internal predecessors, (1382), 148 states have call successors, (148), 26 states have call predecessors, (148), 26 states have return successors, (148), 136 states have call predecessors, (148), 148 states have call successors, (148) [2023-12-21 01:53:54,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1336 states to 1336 states and 1678 transitions. [2023-12-21 01:53:54,244 INFO L78 Accepts]: Start accepts. Automaton has 1336 states and 1678 transitions. Word has length 142 [2023-12-21 01:53:54,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:53:54,245 INFO L495 AbstractCegarLoop]: Abstraction has 1336 states and 1678 transitions. [2023-12-21 01:53:54,245 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, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-21 01:53:54,245 INFO L276 IsEmpty]: Start isEmpty. Operand 1336 states and 1678 transitions. [2023-12-21 01:53:54,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-21 01:53:54,246 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:53:54,246 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:53:54,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-21 01:53:54,246 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:53:54,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:53:54,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1508540049, now seen corresponding path program 1 times [2023-12-21 01:53:54,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:53:54,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941360100] [2023-12-21 01:53:54,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:53:54,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:53:54,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:54,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:53:54,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:54,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:53:54,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:54,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:53:54,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:54,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:53:54,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:54,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:53:54,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:54,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:53:54,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:54,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:53:54,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:54,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:53:54,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:54,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:53:54,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:54,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:53:54,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:54,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:53:54,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:54,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:53:54,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:54,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:53:54,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:54,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:53:54,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:54,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:53:54,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:54,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:53:54,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:54,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:53:54,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:54,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:53:54,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:53:54,658 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-21 01:53:54,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:53:54,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941360100] [2023-12-21 01:53:54,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941360100] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:53:54,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:53:54,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 01:53:54,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331424053] [2023-12-21 01:53:54,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:53:54,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 01:53:54,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:53:54,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 01:53:54,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-21 01:53:54,659 INFO L87 Difference]: Start difference. First operand 1336 states and 1678 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-21 01:53:55,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:53:55,530 INFO L93 Difference]: Finished difference Result 3016 states and 3780 transitions. [2023-12-21 01:53:55,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 01:53:55,530 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 143 [2023-12-21 01:53:55,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:53:55,535 INFO L225 Difference]: With dead ends: 3016 [2023-12-21 01:53:55,535 INFO L226 Difference]: Without dead ends: 1681 [2023-12-21 01:53:55,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-12-21 01:53:55,538 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 75 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 01:53:55,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 730 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 01:53:55,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1681 states. [2023-12-21 01:53:55,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1681 to 1497. [2023-12-21 01:53:55,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1497 states, 1322 states have (on average 1.1853252647503782) internal successors, (1567), 1334 states have internal predecessors, (1567), 148 states have call successors, (148), 26 states have call predecessors, (148), 26 states have return successors, (148), 136 states have call predecessors, (148), 148 states have call successors, (148) [2023-12-21 01:53:55,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1497 states to 1497 states and 1863 transitions. [2023-12-21 01:53:55,887 INFO L78 Accepts]: Start accepts. Automaton has 1497 states and 1863 transitions. Word has length 143 [2023-12-21 01:53:55,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:53:55,887 INFO L495 AbstractCegarLoop]: Abstraction has 1497 states and 1863 transitions. [2023-12-21 01:53:55,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-21 01:53:55,887 INFO L276 IsEmpty]: Start isEmpty. Operand 1497 states and 1863 transitions. [2023-12-21 01:53:55,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-21 01:53:55,888 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:53:55,888 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:53:55,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-21 01:53:55,888 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:53:55,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:53:55,889 INFO L85 PathProgramCache]: Analyzing trace with hash 947111974, now seen corresponding path program 1 times [2023-12-21 01:53:55,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:53:55,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107334288] [2023-12-21 01:53:55,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:53:55,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:53:56,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:54:00,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:54:00,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:54:00,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:54:00,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:54:00,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:54:00,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:54:00,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:54:00,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:54:00,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:54:00,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:54:00,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:54:00,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:54:00,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:54:00,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:54:00,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:54:00,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:54:00,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:54:00,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:54:00,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:54:00,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:54:00,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:54:00,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:54:00,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:54:00,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:54:00,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:54:00,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:54:00,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:54:00,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:54:00,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:54:00,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:54:00,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:54:00,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:54:00,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:54:00,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:54:00,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:54:00,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:54:00,134 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-21 01:54:00,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:54:00,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107334288] [2023-12-21 01:54:00,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107334288] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:54:00,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:54:00,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2023-12-21 01:54:00,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215500812] [2023-12-21 01:54:00,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:54:00,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-21 01:54:00,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:54:00,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-21 01:54:00,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=634, Unknown=0, NotChecked=0, Total=702 [2023-12-21 01:54:00,135 INFO L87 Difference]: Start difference. First operand 1497 states and 1863 transitions. Second operand has 27 states, 25 states have (on average 2.24) internal successors, (56), 27 states have internal predecessors, (56), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 4 states have call predecessors, (18), 5 states have call successors, (18) [2023-12-21 01:54:04,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 01:54:19,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 01:54:35,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 01:54:42,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 01:54:45,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 01:54:51,182 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.98s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 01:54:53,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 01:54:55,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 01:54:57,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:54:57,206 INFO L93 Difference]: Finished difference Result 1992 states and 2457 transitions. [2023-12-21 01:54:57,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-21 01:54:57,206 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 2.24) internal successors, (56), 27 states have internal predecessors, (56), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 4 states have call predecessors, (18), 5 states have call successors, (18) Word has length 143 [2023-12-21 01:54:57,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:54:57,221 INFO L225 Difference]: With dead ends: 1992 [2023-12-21 01:54:57,222 INFO L226 Difference]: Without dead ends: 1990 [2023-12-21 01:54:57,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 27.5s TimeCoverageRelationStatistics Valid=461, Invalid=2619, Unknown=0, NotChecked=0, Total=3080 [2023-12-21 01:54:57,226 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 673 mSDsluCounter, 1447 mSDsCounter, 0 mSdLazyCounter, 2245 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 1570 SdHoareTripleChecker+Invalid, 2361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:54:57,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [674 Valid, 1570 Invalid, 2361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 2245 Invalid, 0 Unknown, 0 Unchecked, 31.1s Time] [2023-12-21 01:54:57,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1990 states. [2023-12-21 01:54:57,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1990 to 1583. [2023-12-21 01:54:57,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1583 states, 1408 states have (on average 1.1818181818181819) internal successors, (1664), 1420 states have internal predecessors, (1664), 148 states have call successors, (148), 26 states have call predecessors, (148), 26 states have return successors, (148), 136 states have call predecessors, (148), 148 states have call successors, (148) [2023-12-21 01:54:57,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 1960 transitions. [2023-12-21 01:54:57,647 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 1960 transitions. Word has length 143 [2023-12-21 01:54:57,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:54:57,647 INFO L495 AbstractCegarLoop]: Abstraction has 1583 states and 1960 transitions. [2023-12-21 01:54:57,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 2.24) internal successors, (56), 27 states have internal predecessors, (56), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 4 states have call predecessors, (18), 5 states have call successors, (18) [2023-12-21 01:54:57,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 1960 transitions. [2023-12-21 01:54:57,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-21 01:54:57,648 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:54:57,649 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:54:57,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-21 01:54:57,649 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:54:57,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:54:57,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1572847960, now seen corresponding path program 1 times [2023-12-21 01:54:57,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:54:57,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027855355] [2023-12-21 01:54:57,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:54:57,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:54:57,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:54:58,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:54:58,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:54:58,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:54:58,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:54:58,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:54:58,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:54:58,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:54:58,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:54:58,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:54:58,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:54:58,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:54:58,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:54:58,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:54:58,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:54:58,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:54:58,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:54:58,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:54:58,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:54:58,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:54:58,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:54:58,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:54:58,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:54:58,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:54:58,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:54:58,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:54:58,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:54:58,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:54:58,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:54:58,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:54:58,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:54:58,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:54:58,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:54:58,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:54:58,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:54:58,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:54:58,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:54:58,027 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-21 01:54:58,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:54:58,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027855355] [2023-12-21 01:54:58,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027855355] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:54:58,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:54:58,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 01:54:58,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293681882] [2023-12-21 01:54:58,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:54:58,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 01:54:58,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:54:58,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 01:54:58,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-21 01:54:58,029 INFO L87 Difference]: Start difference. First operand 1583 states and 1960 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-21 01:54:58,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:54:58,738 INFO L93 Difference]: Finished difference Result 3441 states and 4236 transitions. [2023-12-21 01:54:58,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 01:54:58,739 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 143 [2023-12-21 01:54:58,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:54:58,741 INFO L225 Difference]: With dead ends: 3441 [2023-12-21 01:54:58,742 INFO L226 Difference]: Without dead ends: 1859 [2023-12-21 01:54:58,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-12-21 01:54:58,743 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 175 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 01:54:58,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 478 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 01:54:58,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1859 states. [2023-12-21 01:54:59,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1859 to 1794. [2023-12-21 01:54:59,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1794 states, 1609 states have (on average 1.175264139216905) internal successors, (1891), 1623 states have internal predecessors, (1891), 156 states have call successors, (156), 28 states have call predecessors, (156), 28 states have return successors, (156), 142 states have call predecessors, (156), 156 states have call successors, (156) [2023-12-21 01:54:59,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1794 states to 1794 states and 2203 transitions. [2023-12-21 01:54:59,131 INFO L78 Accepts]: Start accepts. Automaton has 1794 states and 2203 transitions. Word has length 143 [2023-12-21 01:54:59,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:54:59,132 INFO L495 AbstractCegarLoop]: Abstraction has 1794 states and 2203 transitions. [2023-12-21 01:54:59,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-21 01:54:59,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1794 states and 2203 transitions. [2023-12-21 01:54:59,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-21 01:54:59,133 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:54:59,133 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:54:59,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-21 01:54:59,133 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:54:59,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:54:59,133 INFO L85 PathProgramCache]: Analyzing trace with hash -858326360, now seen corresponding path program 1 times [2023-12-21 01:54:59,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:54:59,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541209274] [2023-12-21 01:54:59,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:54:59,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:54:59,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:54:59,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:54:59,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:54:59,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:54:59,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:54:59,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:54:59,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:54:59,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:54:59,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:54:59,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:54:59,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:54:59,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:54:59,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:54:59,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:54:59,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:54:59,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:54:59,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:54:59,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:54:59,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:54:59,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:54:59,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:54:59,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:54:59,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:54:59,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:54:59,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:54:59,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:54:59,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:54:59,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:54:59,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:54:59,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:54:59,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:54:59,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:54:59,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:54:59,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:54:59,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:54:59,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:54:59,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:54:59,417 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-21 01:54:59,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:54:59,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541209274] [2023-12-21 01:54:59,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541209274] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:54:59,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:54:59,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 01:54:59,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457338842] [2023-12-21 01:54:59,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:54:59,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 01:54:59,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:54:59,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 01:54:59,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-21 01:54:59,419 INFO L87 Difference]: Start difference. First operand 1794 states and 2203 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-21 01:55:00,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:55:00,141 INFO L93 Difference]: Finished difference Result 3674 states and 4507 transitions. [2023-12-21 01:55:00,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 01:55:00,142 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 143 [2023-12-21 01:55:00,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:55:00,144 INFO L225 Difference]: With dead ends: 3674 [2023-12-21 01:55:00,144 INFO L226 Difference]: Without dead ends: 1881 [2023-12-21 01:55:00,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-12-21 01:55:00,146 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 169 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 01:55:00,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 428 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 01:55:00,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1881 states. [2023-12-21 01:55:00,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1881 to 1796. [2023-12-21 01:55:00,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1796 states, 1611 states have (on average 1.1738050900062074) internal successors, (1891), 1625 states have internal predecessors, (1891), 156 states have call successors, (156), 28 states have call predecessors, (156), 28 states have return successors, (156), 142 states have call predecessors, (156), 156 states have call successors, (156) [2023-12-21 01:55:00,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1796 states to 1796 states and 2203 transitions. [2023-12-21 01:55:00,535 INFO L78 Accepts]: Start accepts. Automaton has 1796 states and 2203 transitions. Word has length 143 [2023-12-21 01:55:00,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:55:00,535 INFO L495 AbstractCegarLoop]: Abstraction has 1796 states and 2203 transitions. [2023-12-21 01:55:00,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-21 01:55:00,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1796 states and 2203 transitions. [2023-12-21 01:55:00,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-21 01:55:00,537 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:55:00,537 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:00,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-21 01:55:00,537 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:55:00,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:55:00,537 INFO L85 PathProgramCache]: Analyzing trace with hash 916681002, now seen corresponding path program 1 times [2023-12-21 01:55:00,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:55:00,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792529467] [2023-12-21 01:55:00,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:55:00,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:55:00,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:00,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:55:00,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:00,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:55:00,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:00,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:55:00,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:00,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:55:00,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:00,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:55:00,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:00,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:55:00,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:00,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:55:00,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:00,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:55:00,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:00,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:55:00,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:00,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:55:00,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:00,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:55:00,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:00,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:55:00,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:00,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:55:00,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:00,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:55:00,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:00,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:55:00,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:00,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:55:00,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:00,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:55:00,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:00,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:55:00,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:00,758 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-21 01:55:00,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:55:00,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792529467] [2023-12-21 01:55:00,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792529467] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:55:00,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:55:00,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 01:55:00,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953790187] [2023-12-21 01:55:00,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:55:00,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 01:55:00,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:55:00,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 01:55:00,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-21 01:55:00,760 INFO L87 Difference]: Start difference. First operand 1796 states and 2203 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-21 01:55:01,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:55:01,303 INFO L93 Difference]: Finished difference Result 1868 states and 2288 transitions. [2023-12-21 01:55:01,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 01:55:01,303 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 143 [2023-12-21 01:55:01,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:55:01,306 INFO L225 Difference]: With dead ends: 1868 [2023-12-21 01:55:01,306 INFO L226 Difference]: Without dead ends: 1866 [2023-12-21 01:55:01,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2023-12-21 01:55:01,307 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 62 mSDsluCounter, 1221 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 1387 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:55:01,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 1387 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 01:55:01,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1866 states. [2023-12-21 01:55:01,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1866 to 1796. [2023-12-21 01:55:01,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1796 states, 1611 states have (on average 1.1725636250775915) internal successors, (1889), 1625 states have internal predecessors, (1889), 156 states have call successors, (156), 28 states have call predecessors, (156), 28 states have return successors, (156), 142 states have call predecessors, (156), 156 states have call successors, (156) [2023-12-21 01:55:01,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1796 states to 1796 states and 2201 transitions. [2023-12-21 01:55:01,705 INFO L78 Accepts]: Start accepts. Automaton has 1796 states and 2201 transitions. Word has length 143 [2023-12-21 01:55:01,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:55:01,706 INFO L495 AbstractCegarLoop]: Abstraction has 1796 states and 2201 transitions. [2023-12-21 01:55:01,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-21 01:55:01,706 INFO L276 IsEmpty]: Start isEmpty. Operand 1796 states and 2201 transitions. [2023-12-21 01:55:01,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-21 01:55:01,707 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:55:01,707 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:01,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-21 01:55:01,707 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:55:01,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:55:01,707 INFO L85 PathProgramCache]: Analyzing trace with hash -943758761, now seen corresponding path program 1 times [2023-12-21 01:55:01,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:55:01,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540867579] [2023-12-21 01:55:01,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:55:01,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:55:01,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:01,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:55:01,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:01,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:55:01,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:01,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:55:01,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:01,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:55:01,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:01,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:55:01,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:01,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:55:01,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:01,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:55:01,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:01,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:55:01,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:01,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:55:01,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:01,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:55:01,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:01,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:55:01,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:01,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:55:02,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:02,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:55:02,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:02,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:55:02,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:02,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:55:02,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:02,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:55:02,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:02,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:55:02,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:02,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:55:02,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:02,012 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-21 01:55:02,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:55:02,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540867579] [2023-12-21 01:55:02,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540867579] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:55:02,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:55:02,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 01:55:02,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739127009] [2023-12-21 01:55:02,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:55:02,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 01:55:02,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:55:02,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 01:55:02,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:55:02,013 INFO L87 Difference]: Start difference. First operand 1796 states and 2201 transitions. Second operand has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-21 01:55:02,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:55:02,945 INFO L93 Difference]: Finished difference Result 3980 states and 4863 transitions. [2023-12-21 01:55:02,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 01:55:02,946 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 143 [2023-12-21 01:55:02,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:55:02,949 INFO L225 Difference]: With dead ends: 3980 [2023-12-21 01:55:02,949 INFO L226 Difference]: Without dead ends: 2185 [2023-12-21 01:55:02,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-21 01:55:02,950 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 205 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 01:55:02,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 494 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 01:55:02,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2185 states. [2023-12-21 01:55:03,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2185 to 1673. [2023-12-21 01:55:03,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1673 states, 1510 states have (on average 1.1635761589403975) internal successors, (1757), 1522 states have internal predecessors, (1757), 136 states have call successors, (136), 26 states have call predecessors, (136), 26 states have return successors, (136), 124 states have call predecessors, (136), 136 states have call successors, (136) [2023-12-21 01:55:03,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1673 states to 1673 states and 2029 transitions. [2023-12-21 01:55:03,299 INFO L78 Accepts]: Start accepts. Automaton has 1673 states and 2029 transitions. Word has length 143 [2023-12-21 01:55:03,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:55:03,300 INFO L495 AbstractCegarLoop]: Abstraction has 1673 states and 2029 transitions. [2023-12-21 01:55:03,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-21 01:55:03,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1673 states and 2029 transitions. [2023-12-21 01:55:03,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-21 01:55:03,301 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:55:03,301 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:03,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-21 01:55:03,301 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:55:03,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:55:03,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1824395694, now seen corresponding path program 1 times [2023-12-21 01:55:03,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:55:03,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572466568] [2023-12-21 01:55:03,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:55:03,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:55:03,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:04,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:55:04,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:04,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:55:04,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:04,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:55:04,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:04,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:55:04,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:04,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:55:04,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:04,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:55:04,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:04,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:55:04,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:04,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:55:04,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:04,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:55:04,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:04,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:55:04,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:04,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:55:04,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:04,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:55:04,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:04,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:55:04,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:04,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:55:04,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:04,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:55:04,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:04,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:55:04,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:04,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:55:04,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:04,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:55:04,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:04,716 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-21 01:55:04,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:55:04,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572466568] [2023-12-21 01:55:04,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572466568] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:55:04,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:55:04,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-12-21 01:55:04,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77833833] [2023-12-21 01:55:04,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:55:04,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-21 01:55:04,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:55:04,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-21 01:55:04,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2023-12-21 01:55:04,717 INFO L87 Difference]: Start difference. First operand 1673 states and 2029 transitions. Second operand has 21 states, 21 states have (on average 2.761904761904762) internal successors, (58), 21 states have internal predecessors, (58), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-21 01:55:08,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:55:08,808 INFO L93 Difference]: Finished difference Result 2251 states and 2691 transitions. [2023-12-21 01:55:08,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-21 01:55:08,809 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.761904761904762) internal successors, (58), 21 states have internal predecessors, (58), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 145 [2023-12-21 01:55:08,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:55:08,813 INFO L225 Difference]: With dead ends: 2251 [2023-12-21 01:55:08,814 INFO L226 Difference]: Without dead ends: 2249 [2023-12-21 01:55:08,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=514, Invalid=2138, Unknown=0, NotChecked=0, Total=2652 [2023-12-21 01:55:08,818 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 666 mSDsluCounter, 1311 mSDsCounter, 0 mSdLazyCounter, 1616 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 666 SdHoareTripleChecker+Valid, 1474 SdHoareTripleChecker+Invalid, 1767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-21 01:55:08,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [666 Valid, 1474 Invalid, 1767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 1616 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-21 01:55:08,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2249 states. [2023-12-21 01:55:09,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2249 to 1922. [2023-12-21 01:55:09,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1922 states, 1730 states have (on average 1.1514450867052024) internal successors, (1992), 1745 states have internal predecessors, (1992), 160 states have call successors, (160), 31 states have call predecessors, (160), 31 states have return successors, (160), 145 states have call predecessors, (160), 160 states have call successors, (160) [2023-12-21 01:55:09,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1922 states to 1922 states and 2312 transitions. [2023-12-21 01:55:09,360 INFO L78 Accepts]: Start accepts. Automaton has 1922 states and 2312 transitions. Word has length 145 [2023-12-21 01:55:09,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:55:09,360 INFO L495 AbstractCegarLoop]: Abstraction has 1922 states and 2312 transitions. [2023-12-21 01:55:09,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.761904761904762) internal successors, (58), 21 states have internal predecessors, (58), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-21 01:55:09,360 INFO L276 IsEmpty]: Start isEmpty. Operand 1922 states and 2312 transitions. [2023-12-21 01:55:09,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-21 01:55:09,362 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:55:09,362 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:09,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-21 01:55:09,362 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:55:09,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:55:09,362 INFO L85 PathProgramCache]: Analyzing trace with hash 631256329, now seen corresponding path program 1 times [2023-12-21 01:55:09,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:55:09,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864169805] [2023-12-21 01:55:09,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:55:09,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:55:09,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:10,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:55:10,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:10,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:55:10,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:10,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:55:10,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:10,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:55:10,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:10,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:55:10,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:10,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:55:10,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:10,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:55:10,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:10,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:55:10,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:10,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:55:10,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:10,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:55:10,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:10,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:55:10,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:10,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:55:10,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:10,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:55:10,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:10,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:55:10,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:10,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:55:10,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:10,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:55:10,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:10,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:55:10,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:10,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:55:10,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:55:10,200 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-21 01:55:10,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:55:10,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864169805] [2023-12-21 01:55:10,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864169805] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:55:10,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:55:10,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-12-21 01:55:10,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633848147] [2023-12-21 01:55:10,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:55:10,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-21 01:55:10,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:55:10,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-21 01:55:10,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-12-21 01:55:10,201 INFO L87 Difference]: Start difference. First operand 1922 states and 2312 transitions. Second operand has 15 states, 14 states have (on average 4.142857142857143) internal successors, (58), 15 states have internal predecessors, (58), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-21 01:55:11,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:55:11,946 INFO L93 Difference]: Finished difference Result 4200 states and 5029 transitions. [2023-12-21 01:55:11,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 01:55:11,947 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.142857142857143) internal successors, (58), 15 states have internal predecessors, (58), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 145 [2023-12-21 01:55:11,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:55:11,950 INFO L225 Difference]: With dead ends: 4200 [2023-12-21 01:55:11,950 INFO L226 Difference]: Without dead ends: 2279 [2023-12-21 01:55:11,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=153, Invalid=549, Unknown=0, NotChecked=0, Total=702 [2023-12-21 01:55:11,952 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 328 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 01:55:11,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 693 Invalid, 915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 01:55:11,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2279 states. [2023-12-21 01:55:12,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2279 to 1962. [2023-12-21 01:55:12,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1962 states, 1770 states have (on average 1.1451977401129942) internal successors, (2027), 1785 states have internal predecessors, (2027), 160 states have call successors, (160), 31 states have call predecessors, (160), 31 states have return successors, (160), 145 states have call predecessors, (160), 160 states have call successors, (160) [2023-12-21 01:55:12,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1962 states to 1962 states and 2347 transitions. [2023-12-21 01:55:12,442 INFO L78 Accepts]: Start accepts. Automaton has 1962 states and 2347 transitions. Word has length 145 [2023-12-21 01:55:12,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:55:12,442 INFO L495 AbstractCegarLoop]: Abstraction has 1962 states and 2347 transitions. [2023-12-21 01:55:12,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.142857142857143) internal successors, (58), 15 states have internal predecessors, (58), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-21 01:55:12,442 INFO L276 IsEmpty]: Start isEmpty. Operand 1962 states and 2347 transitions. [2023-12-21 01:55:12,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-21 01:55:12,443 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:55:12,443 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:12,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-12-21 01:55:12,443 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:55:12,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:55:12,444 INFO L85 PathProgramCache]: Analyzing trace with hash -507704995, now seen corresponding path program 1 times [2023-12-21 01:55:12,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:55:12,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153582670] [2023-12-21 01:55:12,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:55:12,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:55:12,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat