/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-32.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 15:12:58,198 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 15:12:58,264 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 15:12:58,268 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 15:12:58,268 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 15:12:58,290 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 15:12:58,291 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 15:12:58,291 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 15:12:58,292 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 15:12:58,293 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 15:12:58,293 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 15:12:58,294 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 15:12:58,294 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 15:12:58,294 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 15:12:58,294 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 15:12:58,295 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 15:12:58,295 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 15:12:58,295 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 15:12:58,295 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 15:12:58,295 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 15:12:58,296 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 15:12:58,296 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 15:12:58,296 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 15:12:58,297 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 15:12:58,297 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 15:12:58,297 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 15:12:58,297 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 15:12:58,297 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 15:12:58,298 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 15:12:58,298 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 15:12:58,299 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 15:12:58,299 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 15:12:58,299 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 15:12:58,299 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 15:12:58,299 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 15:12:58,299 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 15:12:58,299 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 15:12:58,300 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 15:12:58,300 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 15:12:58,300 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 15:12:58,300 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 15:12:58,300 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 15:12:58,300 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 15:12:58,300 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 15:12:58,501 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 15:12:58,521 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 15:12:58,523 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 15:12:58,524 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 15:12:58,525 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 15:12:58,525 INFO L431 ainManager$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 [2023-12-19 15:12:59,499 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 15:12:59,673 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 15:12:59,673 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-32.i [2023-12-19 15:12:59,679 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c938dd15d/31e8cd4258874d64a488f896809b6961/FLAGe82b229fa [2023-12-19 15:12:59,688 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c938dd15d/31e8cd4258874d64a488f896809b6961 [2023-12-19 15:12:59,690 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 15:12:59,690 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 15:12:59,691 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 15:12:59,691 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 15:12:59,694 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 15:12:59,695 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 03:12:59" (1/1) ... [2023-12-19 15:12:59,695 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c2c49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:12:59, skipping insertion in model container [2023-12-19 15:12:59,696 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 03:12:59" (1/1) ... [2023-12-19 15:12:59,712 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 15:12:59,835 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] [2023-12-19 15:12:59,876 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 15:12:59,891 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 15:12:59,899 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] [2023-12-19 15:12:59,936 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 15:12:59,949 INFO L206 MainTranslator]: Completed translation [2023-12-19 15:12:59,950 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:12:59 WrapperNode [2023-12-19 15:12:59,950 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 15:12:59,951 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 15:12:59,951 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 15:12:59,951 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 15:12:59,956 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:12:59" (1/1) ... [2023-12-19 15:12:59,971 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:12:59" (1/1) ... [2023-12-19 15:13:00,001 INFO L138 Inliner]: procedures = 26, calls = 158, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 452 [2023-12-19 15:13:00,001 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 15:13:00,002 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 15:13:00,002 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 15:13:00,002 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 15:13:00,009 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:12:59" (1/1) ... [2023-12-19 15:13:00,010 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:12:59" (1/1) ... [2023-12-19 15:13:00,013 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:12:59" (1/1) ... [2023-12-19 15:13:00,041 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]. [2023-12-19 15:13:00,042 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:12:59" (1/1) ... [2023-12-19 15:13:00,042 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:12:59" (1/1) ... [2023-12-19 15:13:00,051 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:12:59" (1/1) ... [2023-12-19 15:13:00,063 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:12:59" (1/1) ... [2023-12-19 15:13:00,065 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:12:59" (1/1) ... [2023-12-19 15:13:00,066 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:12:59" (1/1) ... [2023-12-19 15:13:00,069 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 15:13:00,070 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 15:13:00,070 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 15:13:00,070 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 15:13:00,071 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:12:59" (1/1) ... [2023-12-19 15:13:00,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 15:13:00,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:13:00,109 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) [2023-12-19 15:13:00,112 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 [2023-12-19 15:13:00,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 15:13:00,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-19 15:13:00,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-19 15:13:00,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-19 15:13:00,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-12-19 15:13:00,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-12-19 15:13:00,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-12-19 15:13:00,145 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-19 15:13:00,145 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-19 15:13:00,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-19 15:13:00,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-12-19 15:13:00,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-12-19 15:13:00,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-12-19 15:13:00,146 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 15:13:00,146 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 15:13:00,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 15:13:00,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-19 15:13:00,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-19 15:13:00,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-19 15:13:00,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-12-19 15:13:00,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-12-19 15:13:00,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 15:13:00,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 15:13:00,266 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 15:13:00,268 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 15:13:00,577 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 15:13:00,606 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 15:13:00,607 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 15:13:00,607 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 03:13:00 BoogieIcfgContainer [2023-12-19 15:13:00,607 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 15:13:00,608 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 15:13:00,609 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 15:13:00,611 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 15:13:00,611 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 03:12:59" (1/3) ... [2023-12-19 15:13:00,611 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f96a867 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 03:13:00, skipping insertion in model container [2023-12-19 15:13:00,611 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:12:59" (2/3) ... [2023-12-19 15:13:00,611 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f96a867 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 03:13:00, skipping insertion in model container [2023-12-19 15:13:00,611 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 03:13:00" (3/3) ... [2023-12-19 15:13:00,612 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-ap_file-32.i [2023-12-19 15:13:00,623 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 15:13:00,623 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 15:13:00,652 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 15:13:00,656 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;@2a373e2c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 15:13:00,656 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 15:13:00,659 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) [2023-12-19 15:13:00,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-19 15:13:00,673 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:13:00,673 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] [2023-12-19 15:13:00,674 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:13:00,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:13:00,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1301880535, now seen corresponding path program 1 times [2023-12-19 15:13:00,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:13:00,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563921271] [2023-12-19 15:13:00,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:13:00,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:13:00,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:00,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:13:00,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:00,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:13:00,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:00,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:13:00,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:00,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:13:00,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:00,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:13:00,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:00,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:13:00,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:00,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:13:00,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:00,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:13:00,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:00,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:13:00,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:00,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:13:00,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:00,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:13:00,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:00,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:13:00,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:00,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:13:00,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:00,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:13:00,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:00,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:13:00,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:00,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:13:00,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:00,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:13:00,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:00,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:13:00,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:00,903 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-19 15:13:00,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:13:00,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563921271] [2023-12-19 15:13:00,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563921271] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:13:00,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:13:00,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 15:13:00,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663903401] [2023-12-19 15:13:00,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:13:00,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 15:13:00,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:13:00,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 15:13:00,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 15:13:00,929 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) [2023-12-19 15:13:00,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:13:00,958 INFO L93 Difference]: Finished difference Result 181 states and 288 transitions. [2023-12-19 15:13:00,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 15:13:00,959 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 [2023-12-19 15:13:00,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:13:00,965 INFO L225 Difference]: With dead ends: 181 [2023-12-19 15:13:00,965 INFO L226 Difference]: Without dead ends: 90 [2023-12-19 15:13:00,967 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 [2023-12-19 15:13:00,969 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 [2023-12-19 15:13:00,970 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] [2023-12-19 15:13:00,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-12-19 15:13:01,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2023-12-19 15:13:01,002 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) [2023-12-19 15:13:01,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 127 transitions. [2023-12-19 15:13:01,004 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 127 transitions. Word has length 124 [2023-12-19 15:13:01,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:13:01,005 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 127 transitions. [2023-12-19 15:13:01,005 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) [2023-12-19 15:13:01,005 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 127 transitions. [2023-12-19 15:13:01,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-19 15:13:01,007 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:13:01,007 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] [2023-12-19 15:13:01,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 15:13:01,007 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:13:01,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:13:01,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1738315597, now seen corresponding path program 1 times [2023-12-19 15:13:01,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:13:01,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886837774] [2023-12-19 15:13:01,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:13:01,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:13:01,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:01,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:13:01,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:01,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:13:01,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:01,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:13:01,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:01,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:13:01,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:01,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:13:01,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:01,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:13:01,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:01,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:13:01,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:01,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:13:01,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:01,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:13:01,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:01,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:13:01,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:01,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:13:01,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:01,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:13:01,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:01,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:13:01,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:01,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:13:01,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:01,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:13:01,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:01,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:13:01,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:01,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:13:01,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:01,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:13:01,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:01,349 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-19 15:13:01,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:13:01,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886837774] [2023-12-19 15:13:01,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886837774] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:13:01,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:13:01,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 15:13:01,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43549104] [2023-12-19 15:13:01,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:13:01,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 15:13:01,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:13:01,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 15:13:01,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 15:13:01,360 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) [2023-12-19 15:13:01,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:13:01,517 INFO L93 Difference]: Finished difference Result 306 states and 432 transitions. [2023-12-19 15:13:01,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 15:13:01,519 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 [2023-12-19 15:13:01,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:13:01,524 INFO L225 Difference]: With dead ends: 306 [2023-12-19 15:13:01,524 INFO L226 Difference]: Without dead ends: 217 [2023-12-19 15:13:01,525 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 [2023-12-19 15:13:01,526 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 [2023-12-19 15:13:01,527 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] [2023-12-19 15:13:01,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2023-12-19 15:13:01,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 185. [2023-12-19 15:13:01,560 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) [2023-12-19 15:13:01,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 262 transitions. [2023-12-19 15:13:01,561 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 262 transitions. Word has length 124 [2023-12-19 15:13:01,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:13:01,561 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 262 transitions. [2023-12-19 15:13:01,562 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) [2023-12-19 15:13:01,562 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 262 transitions. [2023-12-19 15:13:01,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-19 15:13:01,563 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:13:01,563 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] [2023-12-19 15:13:01,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 15:13:01,563 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:13:01,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:13:01,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1084937767, now seen corresponding path program 1 times [2023-12-19 15:13:01,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:13:01,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439688198] [2023-12-19 15:13:01,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:13:01,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:13:01,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:02,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:13:02,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:02,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:13:02,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:02,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:13:02,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:02,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:13:02,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:02,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:13:02,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:02,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:13:02,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:02,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:13:02,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:02,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:13:02,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:02,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:13:02,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:02,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:13:02,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:02,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:13:02,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:02,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:13:02,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:02,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:13:02,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:02,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:13:02,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:02,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:13:02,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:02,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:13:02,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:02,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:13:02,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:02,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:13:02,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:02,547 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-19 15:13:02,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:13:02,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439688198] [2023-12-19 15:13:02,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439688198] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:13:02,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:13:02,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-19 15:13:02,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988717513] [2023-12-19 15:13:02,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:13:02,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 15:13:02,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:13:02,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 15:13:02,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-12-19 15:13:02,556 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) [2023-12-19 15:13:03,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:13:03,319 INFO L93 Difference]: Finished difference Result 595 states and 847 transitions. [2023-12-19 15:13:03,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 15:13:03,320 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 [2023-12-19 15:13:03,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:13:03,322 INFO L225 Difference]: With dead ends: 595 [2023-12-19 15:13:03,322 INFO L226 Difference]: Without dead ends: 411 [2023-12-19 15:13:03,323 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 [2023-12-19 15:13:03,324 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, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 15:13:03,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 779 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 15:13:03,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2023-12-19 15:13:03,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 337. [2023-12-19 15:13:03,350 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) [2023-12-19 15:13:03,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 477 transitions. [2023-12-19 15:13:03,352 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 477 transitions. Word has length 132 [2023-12-19 15:13:03,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:13:03,353 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 477 transitions. [2023-12-19 15:13:03,353 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) [2023-12-19 15:13:03,353 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 477 transitions. [2023-12-19 15:13:03,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-19 15:13:03,355 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:13:03,355 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] [2023-12-19 15:13:03,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 15:13:03,355 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:13:03,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:13:03,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1886227570, now seen corresponding path program 1 times [2023-12-19 15:13:03,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:13:03,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872850339] [2023-12-19 15:13:03,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:13:03,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:13:03,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:05,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:13:05,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:05,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:13:05,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:05,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:13:05,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:05,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:13:05,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:05,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:13:05,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:05,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:13:05,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:05,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:13:05,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:05,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:13:05,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:05,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:13:05,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:05,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:13:05,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:05,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:13:05,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:05,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:13:05,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:05,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:13:05,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:05,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:13:05,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:05,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:13:05,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:05,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:13:05,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:05,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:13:05,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:05,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:13:05,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:05,261 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-19 15:13:05,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:13:05,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872850339] [2023-12-19 15:13:05,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872850339] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:13:05,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:13:05,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-12-19 15:13:05,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425320776] [2023-12-19 15:13:05,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:13:05,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-19 15:13:05,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:13:05,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-19 15:13:05,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2023-12-19 15:13:05,264 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) [2023-12-19 15:13:09,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:13:09,436 INFO L93 Difference]: Finished difference Result 833 states and 1167 transitions. [2023-12-19 15:13:09,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 15:13:09,437 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 [2023-12-19 15:13:09,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:13:09,467 INFO L225 Difference]: With dead ends: 833 [2023-12-19 15:13:09,467 INFO L226 Difference]: Without dead ends: 497 [2023-12-19 15:13:09,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=196, Invalid=860, Unknown=0, NotChecked=0, Total=1056 [2023-12-19 15:13:09,469 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, 2.7s IncrementalHoareTripleChecker+Time [2023-12-19 15:13:09,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [675 Valid, 1288 Invalid, 1602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1456 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-19 15:13:09,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2023-12-19 15:13:09,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 344. [2023-12-19 15:13:09,515 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) [2023-12-19 15:13:09,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 485 transitions. [2023-12-19 15:13:09,517 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 485 transitions. Word has length 134 [2023-12-19 15:13:09,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:13:09,519 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 485 transitions. [2023-12-19 15:13:09,519 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) [2023-12-19 15:13:09,519 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 485 transitions. [2023-12-19 15:13:09,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-19 15:13:09,522 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:13:09,523 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] [2023-12-19 15:13:09,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 15:13:09,523 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:13:09,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:13:09,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1742443630, now seen corresponding path program 1 times [2023-12-19 15:13:09,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:13:09,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177738613] [2023-12-19 15:13:09,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:13:09,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:13:09,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:09,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:13:09,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:09,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:13:09,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:09,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:13:09,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:09,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:13:09,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:09,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:13:09,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:09,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:13:09,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:09,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:13:09,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:09,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:13:09,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:09,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:13:09,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:09,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:13:09,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:09,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:13:09,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:09,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:13:09,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:09,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:13:09,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:09,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:13:09,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:09,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:13:09,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:09,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:13:09,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:09,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:13:09,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:09,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:13:09,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:09,659 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-19 15:13:09,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:13:09,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177738613] [2023-12-19 15:13:09,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177738613] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:13:09,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:13:09,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 15:13:09,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974357979] [2023-12-19 15:13:09,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:13:09,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 15:13:09,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:13:09,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 15:13:09,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 15:13:09,661 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) [2023-12-19 15:13:09,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:13:09,713 INFO L93 Difference]: Finished difference Result 735 states and 1037 transitions. [2023-12-19 15:13:09,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 15:13:09,714 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 [2023-12-19 15:13:09,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:13:09,716 INFO L225 Difference]: With dead ends: 735 [2023-12-19 15:13:09,716 INFO L226 Difference]: Without dead ends: 392 [2023-12-19 15:13:09,716 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 [2023-12-19 15:13:09,717 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 [2023-12-19 15:13:09,717 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] [2023-12-19 15:13:09,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2023-12-19 15:13:09,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 356. [2023-12-19 15:13:09,751 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) [2023-12-19 15:13:09,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 497 transitions. [2023-12-19 15:13:09,753 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 497 transitions. Word has length 134 [2023-12-19 15:13:09,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:13:09,754 INFO L495 AbstractCegarLoop]: Abstraction has 356 states and 497 transitions. [2023-12-19 15:13:09,754 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) [2023-12-19 15:13:09,754 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 497 transitions. [2023-12-19 15:13:09,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-19 15:13:09,756 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:13:09,756 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] [2023-12-19 15:13:09,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 15:13:09,756 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:13:09,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:13:09,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1644467598, now seen corresponding path program 1 times [2023-12-19 15:13:09,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:13:09,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906601202] [2023-12-19 15:13:09,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:13:09,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:13:09,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:10,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:13:10,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:10,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:13:10,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:10,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:13:10,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:10,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:13:10,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:10,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:13:10,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:10,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:13:10,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:10,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:13:10,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:10,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:13:10,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:10,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:13:10,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:10,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:13:10,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:10,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:13:10,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:10,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:13:10,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:10,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:13:10,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:10,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:13:10,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:10,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:13:10,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:10,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:13:10,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:10,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:13:10,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:10,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:13:10,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:10,876 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-19 15:13:10,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:13:10,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906601202] [2023-12-19 15:13:10,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906601202] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:13:10,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:13:10,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-19 15:13:10,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674294156] [2023-12-19 15:13:10,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:13:10,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-19 15:13:10,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:13:10,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-19 15:13:10,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-12-19 15:13:10,878 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) [2023-12-19 15:13:12,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:13:12,713 INFO L93 Difference]: Finished difference Result 875 states and 1211 transitions. [2023-12-19 15:13:12,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-19 15:13:12,713 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 [2023-12-19 15:13:12,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:13:12,715 INFO L225 Difference]: With dead ends: 875 [2023-12-19 15:13:12,716 INFO L226 Difference]: Without dead ends: 520 [2023-12-19 15:13:12,717 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 [2023-12-19 15:13:12,717 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 [2023-12-19 15:13:12,717 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] [2023-12-19 15:13:12,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2023-12-19 15:13:12,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 305. [2023-12-19 15:13:12,743 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) [2023-12-19 15:13:12,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 423 transitions. [2023-12-19 15:13:12,744 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 423 transitions. Word has length 134 [2023-12-19 15:13:12,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:13:12,744 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 423 transitions. [2023-12-19 15:13:12,745 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) [2023-12-19 15:13:12,745 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 423 transitions. [2023-12-19 15:13:12,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-19 15:13:12,746 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:13:12,746 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] [2023-12-19 15:13:12,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 15:13:12,746 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:13:12,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:13:12,746 INFO L85 PathProgramCache]: Analyzing trace with hash 274472630, now seen corresponding path program 1 times [2023-12-19 15:13:12,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:13:12,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202816410] [2023-12-19 15:13:12,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:13:12,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:13:12,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:13,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:13:13,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:13,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:13:13,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:13,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:13:13,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:13,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:13:13,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:13,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:13:13,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:13,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:13:13,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:13,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:13:13,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:13,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:13:13,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:13,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:13:13,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:13,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:13:13,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:13,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:13:13,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:13,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:13:13,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:13,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:13:13,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:13,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:13:13,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:13,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:13:13,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:13,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:13:13,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:13,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:13:13,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:13,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:13:13,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:13,868 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-19 15:13:13,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:13:13,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202816410] [2023-12-19 15:13:13,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202816410] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:13:13,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:13:13,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-12-19 15:13:13,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762721132] [2023-12-19 15:13:13,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:13:13,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-19 15:13:13,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:13:13,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-19 15:13:13,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2023-12-19 15:13:13,869 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) [2023-12-19 15:13:16,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:13:16,118 INFO L93 Difference]: Finished difference Result 798 states and 1104 transitions. [2023-12-19 15:13:16,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 15:13:16,118 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 [2023-12-19 15:13:16,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:13:16,120 INFO L225 Difference]: With dead ends: 798 [2023-12-19 15:13:16,120 INFO L226 Difference]: Without dead ends: 494 [2023-12-19 15:13:16,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=216, Invalid=776, Unknown=0, NotChecked=0, Total=992 [2023-12-19 15:13:16,122 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 636 mSDsluCounter, 1040 mSDsCounter, 0 mSdLazyCounter, 1301 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.4s IncrementalHoareTripleChecker+Time [2023-12-19 15:13:16,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [636 Valid, 1242 Invalid, 1450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 1301 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-19 15:13:16,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2023-12-19 15:13:16,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 293. [2023-12-19 15:13:16,159 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) [2023-12-19 15:13:16,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 407 transitions. [2023-12-19 15:13:16,160 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 407 transitions. Word has length 135 [2023-12-19 15:13:16,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:13:16,160 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 407 transitions. [2023-12-19 15:13:16,160 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) [2023-12-19 15:13:16,161 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 407 transitions. [2023-12-19 15:13:16,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-19 15:13:16,161 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:13:16,162 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] [2023-12-19 15:13:16,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 15:13:16,162 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:13:16,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:13:16,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1985130588, now seen corresponding path program 1 times [2023-12-19 15:13:16,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:13:16,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465868123] [2023-12-19 15:13:16,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:13:16,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:13:16,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:17,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:13:17,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:17,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:13:17,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:17,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:13:17,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:17,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:13:17,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:17,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:13:17,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:17,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:13:17,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:17,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:13:17,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:17,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:13:17,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:17,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:13:17,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:17,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:13:17,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:17,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:13:17,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:17,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:13:17,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:17,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:13:17,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:17,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:13:17,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:17,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:13:17,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:17,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:13:17,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:17,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:13:17,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:17,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:13:17,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:17,262 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-19 15:13:17,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:13:17,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465868123] [2023-12-19 15:13:17,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465868123] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:13:17,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:13:17,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-12-19 15:13:17,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836778348] [2023-12-19 15:13:17,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:13:17,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-19 15:13:17,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:13:17,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-19 15:13:17,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2023-12-19 15:13:17,263 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) [2023-12-19 15:13:21,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:13:21,254 INFO L93 Difference]: Finished difference Result 832 states and 1152 transitions. [2023-12-19 15:13:21,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-19 15:13:21,254 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 [2023-12-19 15:13:21,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:13:21,257 INFO L225 Difference]: With dead ends: 832 [2023-12-19 15:13:21,257 INFO L226 Difference]: Without dead ends: 669 [2023-12-19 15:13:21,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=270, Invalid=990, Unknown=0, NotChecked=0, Total=1260 [2023-12-19 15:13:21,258 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 711 mSDsluCounter, 1404 mSDsCounter, 0 mSdLazyCounter, 1306 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s 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, 2.8s IncrementalHoareTripleChecker+Time [2023-12-19 15:13:21,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 1552 Invalid, 1538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 1306 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-19 15:13:21,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2023-12-19 15:13:21,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 313. [2023-12-19 15:13:21,300 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) [2023-12-19 15:13:21,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 436 transitions. [2023-12-19 15:13:21,301 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 436 transitions. Word has length 135 [2023-12-19 15:13:21,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:13:21,301 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 436 transitions. [2023-12-19 15:13:21,301 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) [2023-12-19 15:13:21,301 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 436 transitions. [2023-12-19 15:13:21,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-19 15:13:21,302 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:13:21,302 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] [2023-12-19 15:13:21,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 15:13:21,302 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:13:21,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:13:21,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1721258455, now seen corresponding path program 1 times [2023-12-19 15:13:21,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:13:21,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913783452] [2023-12-19 15:13:21,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:13:21,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:13:21,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:21,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:13:21,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:21,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:13:21,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:21,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:13:21,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:21,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:13:21,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:21,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:13:21,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:21,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:13:21,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:21,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:13:21,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:21,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:13:21,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:21,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:13:21,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:21,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:13:21,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:21,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:13:21,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:21,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:13:21,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:21,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:13:21,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:21,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:13:21,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:21,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:13:21,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:21,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:13:21,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:21,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:13:21,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:21,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:13:21,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:21,626 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-19 15:13:21,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:13:21,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913783452] [2023-12-19 15:13:21,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913783452] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:13:21,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:13:21,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 15:13:21,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503181440] [2023-12-19 15:13:21,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:13:21,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 15:13:21,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:13:21,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 15:13:21,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 15:13:21,627 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) [2023-12-19 15:13:21,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:13:21,965 INFO L93 Difference]: Finished difference Result 878 states and 1217 transitions. [2023-12-19 15:13:21,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 15:13:21,965 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 [2023-12-19 15:13:21,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:13:21,967 INFO L225 Difference]: With dead ends: 878 [2023-12-19 15:13:21,967 INFO L226 Difference]: Without dead ends: 566 [2023-12-19 15:13:21,968 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 [2023-12-19 15:13:21,969 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 [2023-12-19 15:13:21,970 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] [2023-12-19 15:13:21,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2023-12-19 15:13:22,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 411. [2023-12-19 15:13:22,040 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) [2023-12-19 15:13:22,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 567 transitions. [2023-12-19 15:13:22,042 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 567 transitions. Word has length 136 [2023-12-19 15:13:22,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:13:22,042 INFO L495 AbstractCegarLoop]: Abstraction has 411 states and 567 transitions. [2023-12-19 15:13:22,042 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) [2023-12-19 15:13:22,042 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 567 transitions. [2023-12-19 15:13:22,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-19 15:13:22,043 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:13:22,043 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] [2023-12-19 15:13:22,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 15:13:22,043 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:13:22,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:13:22,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1466186102, now seen corresponding path program 1 times [2023-12-19 15:13:22,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:13:22,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707671282] [2023-12-19 15:13:22,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:13:22,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:13:22,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:22,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:13:22,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:22,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:13:22,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:22,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:13:22,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:22,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:13:22,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:22,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:13:22,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:22,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:13:22,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:22,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:13:22,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:22,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:13:22,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:22,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:13:22,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:22,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:13:22,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:22,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:13:22,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:22,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:13:22,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:22,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:13:22,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:22,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:13:22,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:22,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:13:22,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:22,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:13:22,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:22,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:13:22,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:22,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:13:22,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:22,352 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-19 15:13:22,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:13:22,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707671282] [2023-12-19 15:13:22,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707671282] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:13:22,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:13:22,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 15:13:22,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107938809] [2023-12-19 15:13:22,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:13:22,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 15:13:22,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:13:22,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 15:13:22,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 15:13:22,354 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) [2023-12-19 15:13:22,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:13:22,536 INFO L93 Difference]: Finished difference Result 659 states and 878 transitions. [2023-12-19 15:13:22,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 15:13:22,536 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 [2023-12-19 15:13:22,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:13:22,538 INFO L225 Difference]: With dead ends: 659 [2023-12-19 15:13:22,538 INFO L226 Difference]: Without dead ends: 657 [2023-12-19 15:13:22,539 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 [2023-12-19 15:13:22,539 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 [2023-12-19 15:13:22,540 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] [2023-12-19 15:13:22,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2023-12-19 15:13:22,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 650. [2023-12-19 15:13:22,642 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) [2023-12-19 15:13:22,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 866 transitions. [2023-12-19 15:13:22,644 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 866 transitions. Word has length 136 [2023-12-19 15:13:22,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:13:22,645 INFO L495 AbstractCegarLoop]: Abstraction has 650 states and 866 transitions. [2023-12-19 15:13:22,645 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) [2023-12-19 15:13:22,645 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 866 transitions. [2023-12-19 15:13:22,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-19 15:13:22,646 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:13:22,646 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] [2023-12-19 15:13:22,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 15:13:22,646 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:13:22,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:13:22,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1048971979, now seen corresponding path program 1 times [2023-12-19 15:13:22,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:13:22,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053554454] [2023-12-19 15:13:22,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:13:22,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:13:22,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:23,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:13:23,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:23,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:13:23,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:23,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:13:23,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:23,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:13:23,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:23,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:13:23,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:23,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:13:23,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:23,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:13:23,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:23,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:13:23,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:23,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:13:23,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:23,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:13:23,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:23,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:13:23,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:23,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:13:23,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:23,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:13:23,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:23,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:13:23,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:23,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:13:23,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:23,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:13:23,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:23,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:13:23,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:23,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:13:23,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:23,495 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-19 15:13:23,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:13:23,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053554454] [2023-12-19 15:13:23,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053554454] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:13:23,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:13:23,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-12-19 15:13:23,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547277791] [2023-12-19 15:13:23,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:13:23,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-19 15:13:23,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:13:23,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-19 15:13:23,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2023-12-19 15:13:23,496 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) [2023-12-19 15:13:25,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:13:25,096 INFO L93 Difference]: Finished difference Result 1643 states and 2194 transitions. [2023-12-19 15:13:25,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-19 15:13:25,096 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 [2023-12-19 15:13:25,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:13:25,099 INFO L225 Difference]: With dead ends: 1643 [2023-12-19 15:13:25,099 INFO L226 Difference]: Without dead ends: 994 [2023-12-19 15:13:25,100 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 [2023-12-19 15:13:25,101 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, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 15:13:25,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 1586 Invalid, 1249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 15:13:25,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2023-12-19 15:13:25,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 638. [2023-12-19 15:13:25,205 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) [2023-12-19 15:13:25,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 850 transitions. [2023-12-19 15:13:25,207 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 850 transitions. Word has length 136 [2023-12-19 15:13:25,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:13:25,208 INFO L495 AbstractCegarLoop]: Abstraction has 638 states and 850 transitions. [2023-12-19 15:13:25,208 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) [2023-12-19 15:13:25,208 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 850 transitions. [2023-12-19 15:13:25,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-19 15:13:25,210 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:13:25,210 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] [2023-12-19 15:13:25,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 15:13:25,210 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:13:25,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:13:25,210 INFO L85 PathProgramCache]: Analyzing trace with hash -134561939, now seen corresponding path program 1 times [2023-12-19 15:13:25,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:13:25,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494409922] [2023-12-19 15:13:25,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:13:25,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:13:25,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:25,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:13:25,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:25,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:13:25,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:25,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:13:25,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:25,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:13:25,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:25,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:13:25,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:25,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:13:25,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:25,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:13:25,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:25,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:13:25,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:25,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:13:25,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:25,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:13:25,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:25,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:13:25,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:25,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:13:25,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:25,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:13:25,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:25,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:13:25,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:25,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:13:25,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:25,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:13:25,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:25,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:13:25,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:25,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:13:25,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:25,463 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-19 15:13:25,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:13:25,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494409922] [2023-12-19 15:13:25,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494409922] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:13:25,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:13:25,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 15:13:25,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690561661] [2023-12-19 15:13:25,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:13:25,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 15:13:25,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:13:25,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 15:13:25,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 15:13:25,464 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) [2023-12-19 15:13:25,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:13:25,747 INFO L93 Difference]: Finished difference Result 1416 states and 1901 transitions. [2023-12-19 15:13:25,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 15:13:25,747 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 [2023-12-19 15:13:25,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:13:25,750 INFO L225 Difference]: With dead ends: 1416 [2023-12-19 15:13:25,750 INFO L226 Difference]: Without dead ends: 1048 [2023-12-19 15:13:25,751 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 [2023-12-19 15:13:25,751 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 [2023-12-19 15:13:25,751 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] [2023-12-19 15:13:25,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2023-12-19 15:13:25,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 829. [2023-12-19 15:13:25,859 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) [2023-12-19 15:13:25,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 1107 transitions. [2023-12-19 15:13:25,860 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 1107 transitions. Word has length 137 [2023-12-19 15:13:25,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:13:25,861 INFO L495 AbstractCegarLoop]: Abstraction has 829 states and 1107 transitions. [2023-12-19 15:13:25,861 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) [2023-12-19 15:13:25,861 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 1107 transitions. [2023-12-19 15:13:25,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-19 15:13:25,862 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:13:25,862 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] [2023-12-19 15:13:25,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 15:13:25,862 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:13:25,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:13:25,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1789263100, now seen corresponding path program 1 times [2023-12-19 15:13:25,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:13:25,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984225674] [2023-12-19 15:13:25,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:13:25,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:13:25,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:26,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:13:26,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:26,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:13:26,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:26,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:13:26,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:26,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:13:26,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:26,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:13:26,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:26,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:13:26,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:26,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:13:26,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:26,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:13:26,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:26,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:13:26,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:26,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:13:26,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:26,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:13:26,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:26,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:13:26,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:26,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:13:26,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:26,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:13:26,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:26,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:13:26,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:26,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:13:26,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:26,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:13:26,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:26,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:13:26,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:26,053 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-19 15:13:26,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:13:26,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984225674] [2023-12-19 15:13:26,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984225674] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:13:26,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:13:26,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 15:13:26,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794977141] [2023-12-19 15:13:26,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:13:26,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 15:13:26,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:13:26,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 15:13:26,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 15:13:26,055 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) [2023-12-19 15:13:26,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:13:26,474 INFO L93 Difference]: Finished difference Result 2048 states and 2718 transitions. [2023-12-19 15:13:26,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 15:13:26,474 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 [2023-12-19 15:13:26,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:13:26,477 INFO L225 Difference]: With dead ends: 2048 [2023-12-19 15:13:26,477 INFO L226 Difference]: Without dead ends: 1220 [2023-12-19 15:13:26,479 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 [2023-12-19 15:13:26,479 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 [2023-12-19 15:13:26,479 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] [2023-12-19 15:13:26,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2023-12-19 15:13:26,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 961. [2023-12-19 15:13:26,608 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) [2023-12-19 15:13:26,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1262 transitions. [2023-12-19 15:13:26,610 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1262 transitions. Word has length 138 [2023-12-19 15:13:26,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:13:26,610 INFO L495 AbstractCegarLoop]: Abstraction has 961 states and 1262 transitions. [2023-12-19 15:13:26,611 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) [2023-12-19 15:13:26,611 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1262 transitions. [2023-12-19 15:13:26,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-19 15:13:26,612 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:13:26,612 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] [2023-12-19 15:13:26,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 15:13:26,612 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:13:26,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:13:26,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1360434925, now seen corresponding path program 1 times [2023-12-19 15:13:26,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:13:26,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515132299] [2023-12-19 15:13:26,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:13:26,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:13:26,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:26,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:13:26,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:26,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:13:26,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:26,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:13:26,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:26,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:13:26,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:26,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:13:26,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:26,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:13:26,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:26,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:13:26,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:26,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:13:26,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:26,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:13:26,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:26,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:13:26,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:26,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:13:26,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:26,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:13:26,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:26,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:13:26,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:26,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:13:26,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:26,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:13:26,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:26,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:13:26,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:26,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:13:26,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:26,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:13:26,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:26,729 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-19 15:13:26,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:13:26,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515132299] [2023-12-19 15:13:26,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515132299] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:13:26,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:13:26,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 15:13:26,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164296558] [2023-12-19 15:13:26,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:13:26,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 15:13:26,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:13:26,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 15:13:26,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 15:13:26,731 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) [2023-12-19 15:13:26,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:13:26,904 INFO L93 Difference]: Finished difference Result 2416 states and 3181 transitions. [2023-12-19 15:13:26,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 15:13:26,905 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 [2023-12-19 15:13:26,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:13:26,908 INFO L225 Difference]: With dead ends: 2416 [2023-12-19 15:13:26,908 INFO L226 Difference]: Without dead ends: 1456 [2023-12-19 15:13:26,909 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 [2023-12-19 15:13:26,910 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 [2023-12-19 15:13:26,910 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] [2023-12-19 15:13:26,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2023-12-19 15:13:27,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1089. [2023-12-19 15:13:27,025 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) [2023-12-19 15:13:27,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1089 states to 1089 states and 1422 transitions. [2023-12-19 15:13:27,027 INFO L78 Accepts]: Start accepts. Automaton has 1089 states and 1422 transitions. Word has length 138 [2023-12-19 15:13:27,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:13:27,027 INFO L495 AbstractCegarLoop]: Abstraction has 1089 states and 1422 transitions. [2023-12-19 15:13:27,027 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) [2023-12-19 15:13:27,027 INFO L276 IsEmpty]: Start isEmpty. Operand 1089 states and 1422 transitions. [2023-12-19 15:13:27,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-19 15:13:27,028 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:13:27,028 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] [2023-12-19 15:13:27,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 15:13:27,028 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:13:27,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:13:27,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1435813800, now seen corresponding path program 1 times [2023-12-19 15:13:27,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:13:27,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343154107] [2023-12-19 15:13:27,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:13:27,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:13:27,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:27,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:13:27,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:27,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:13:27,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:27,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:13:27,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:27,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:13:27,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:27,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:13:27,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:27,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:13:27,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:27,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:13:27,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:27,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:13:27,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:27,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:13:27,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:27,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:13:27,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:27,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:13:27,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:27,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:13:27,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:27,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:13:27,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:27,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:13:27,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:27,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:13:27,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:27,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:13:27,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:27,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:13:27,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:27,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:13:27,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:27,806 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-19 15:13:27,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:13:27,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343154107] [2023-12-19 15:13:27,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343154107] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:13:27,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:13:27,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-12-19 15:13:27,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736555010] [2023-12-19 15:13:27,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:13:27,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-19 15:13:27,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:13:27,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-19 15:13:27,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2023-12-19 15:13:27,807 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) [2023-12-19 15:13:29,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:13:29,497 INFO L93 Difference]: Finished difference Result 2728 states and 3543 transitions. [2023-12-19 15:13:29,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-19 15:13:29,498 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 [2023-12-19 15:13:29,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:13:29,502 INFO L225 Difference]: With dead ends: 2728 [2023-12-19 15:13:29,502 INFO L226 Difference]: Without dead ends: 1640 [2023-12-19 15:13:29,504 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 [2023-12-19 15:13:29,504 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 663 mSDsluCounter, 1019 mSDsCounter, 0 mSdLazyCounter, 1287 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 15:13:29,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [663 Valid, 1205 Invalid, 1526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 1287 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 15:13:29,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2023-12-19 15:13:29,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1202. [2023-12-19 15:13:29,667 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) [2023-12-19 15:13:29,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1202 states to 1202 states and 1570 transitions. [2023-12-19 15:13:29,669 INFO L78 Accepts]: Start accepts. Automaton has 1202 states and 1570 transitions. Word has length 139 [2023-12-19 15:13:29,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:13:29,669 INFO L495 AbstractCegarLoop]: Abstraction has 1202 states and 1570 transitions. [2023-12-19 15:13:29,669 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) [2023-12-19 15:13:29,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1202 states and 1570 transitions. [2023-12-19 15:13:29,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-19 15:13:29,670 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:13:29,670 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] [2023-12-19 15:13:29,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 15:13:29,671 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:13:29,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:13:29,671 INFO L85 PathProgramCache]: Analyzing trace with hash 555401097, now seen corresponding path program 1 times [2023-12-19 15:13:29,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:13:29,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723206086] [2023-12-19 15:13:29,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:13:29,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:13:29,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:29,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:13:29,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:29,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:13:29,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:29,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:13:29,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:29,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:13:29,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:29,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:13:29,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:29,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:13:29,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:29,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:13:29,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:29,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:13:29,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:29,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:13:29,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:29,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:13:29,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:29,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:13:29,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:29,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:13:29,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:29,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:13:29,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:29,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:13:29,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:29,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:13:29,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:29,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:13:29,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:29,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:13:29,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:29,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:13:29,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:29,800 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-19 15:13:29,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:13:29,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723206086] [2023-12-19 15:13:29,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723206086] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:13:29,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:13:29,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 15:13:29,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780771884] [2023-12-19 15:13:29,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:13:29,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 15:13:29,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:13:29,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 15:13:29,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 15:13:29,802 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) [2023-12-19 15:13:30,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:13:30,027 INFO L93 Difference]: Finished difference Result 2689 states and 3518 transitions. [2023-12-19 15:13:30,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 15:13:30,028 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 [2023-12-19 15:13:30,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:13:30,031 INFO L225 Difference]: With dead ends: 2689 [2023-12-19 15:13:30,031 INFO L226 Difference]: Without dead ends: 1488 [2023-12-19 15:13:30,034 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 [2023-12-19 15:13:30,035 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 [2023-12-19 15:13:30,035 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] [2023-12-19 15:13:30,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1488 states. [2023-12-19 15:13:30,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1488 to 1223. [2023-12-19 15:13:30,205 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) [2023-12-19 15:13:30,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 1591 transitions. [2023-12-19 15:13:30,207 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 1591 transitions. Word has length 139 [2023-12-19 15:13:30,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:13:30,208 INFO L495 AbstractCegarLoop]: Abstraction has 1223 states and 1591 transitions. [2023-12-19 15:13:30,208 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) [2023-12-19 15:13:30,208 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 1591 transitions. [2023-12-19 15:13:30,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-19 15:13:30,209 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:13:30,210 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] [2023-12-19 15:13:30,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 15:13:30,210 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:13:30,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:13:30,210 INFO L85 PathProgramCache]: Analyzing trace with hash -124657273, now seen corresponding path program 1 times [2023-12-19 15:13:30,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:13:30,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841649501] [2023-12-19 15:13:30,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:13:30,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:13:30,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:30,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:13:30,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:30,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:13:30,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:30,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:13:30,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:30,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:13:30,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:30,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:13:30,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:30,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:13:30,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:30,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:13:30,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:30,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:13:30,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:30,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:13:30,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:30,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:13:30,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:30,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:13:30,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:30,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:13:30,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:30,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:13:30,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:30,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:13:30,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:30,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:13:30,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:30,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:13:30,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:30,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:13:30,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:30,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:13:30,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:30,331 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-19 15:13:30,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:13:30,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841649501] [2023-12-19 15:13:30,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841649501] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:13:30,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:13:30,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 15:13:30,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981181939] [2023-12-19 15:13:30,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:13:30,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 15:13:30,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:13:30,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 15:13:30,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 15:13:30,333 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) [2023-12-19 15:13:30,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:13:30,538 INFO L93 Difference]: Finished difference Result 2160 states and 2825 transitions. [2023-12-19 15:13:30,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 15:13:30,539 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 [2023-12-19 15:13:30,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:13:30,546 INFO L225 Difference]: With dead ends: 2160 [2023-12-19 15:13:30,546 INFO L226 Difference]: Without dead ends: 1346 [2023-12-19 15:13:30,548 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 [2023-12-19 15:13:30,549 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 [2023-12-19 15:13:30,549 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] [2023-12-19 15:13:30,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1346 states. [2023-12-19 15:13:30,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1346 to 1194. [2023-12-19 15:13:30,711 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) [2023-12-19 15:13:30,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 1550 transitions. [2023-12-19 15:13:30,712 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 1550 transitions. Word has length 139 [2023-12-19 15:13:30,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:13:30,713 INFO L495 AbstractCegarLoop]: Abstraction has 1194 states and 1550 transitions. [2023-12-19 15:13:30,713 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) [2023-12-19 15:13:30,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 1550 transitions. [2023-12-19 15:13:30,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-19 15:13:30,714 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:13:30,714 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] [2023-12-19 15:13:30,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 15:13:30,714 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:13:30,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:13:30,714 INFO L85 PathProgramCache]: Analyzing trace with hash -535845215, now seen corresponding path program 1 times [2023-12-19 15:13:30,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:13:30,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214226766] [2023-12-19 15:13:30,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:13:30,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:13:30,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:30,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:13:30,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:30,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:13:30,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:30,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:13:30,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:30,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:13:30,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:30,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:13:30,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:30,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:13:30,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:30,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:13:30,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:30,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:13:30,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:30,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:13:30,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:30,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:13:30,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:30,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:13:30,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:30,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:13:30,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:30,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:13:30,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:30,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:13:30,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:31,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:13:31,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:31,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:13:31,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:31,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:13:31,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:31,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:13:31,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:31,020 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-19 15:13:31,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:13:31,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214226766] [2023-12-19 15:13:31,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214226766] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:13:31,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:13:31,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 15:13:31,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918053838] [2023-12-19 15:13:31,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:13:31,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 15:13:31,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:13:31,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 15:13:31,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 15:13:31,022 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) [2023-12-19 15:13:31,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:13:31,551 INFO L93 Difference]: Finished difference Result 2446 states and 3166 transitions. [2023-12-19 15:13:31,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 15:13:31,552 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 [2023-12-19 15:13:31,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:13:31,555 INFO L225 Difference]: With dead ends: 2446 [2023-12-19 15:13:31,555 INFO L226 Difference]: Without dead ends: 1253 [2023-12-19 15:13:31,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-19 15:13:31,557 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, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 15:13:31,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 353 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 15:13:31,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1253 states. [2023-12-19 15:13:31,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1253 to 1128. [2023-12-19 15:13:31,771 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) [2023-12-19 15:13:31,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1128 states to 1128 states and 1457 transitions. [2023-12-19 15:13:31,773 INFO L78 Accepts]: Start accepts. Automaton has 1128 states and 1457 transitions. Word has length 140 [2023-12-19 15:13:31,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:13:31,773 INFO L495 AbstractCegarLoop]: Abstraction has 1128 states and 1457 transitions. [2023-12-19 15:13:31,773 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) [2023-12-19 15:13:31,773 INFO L276 IsEmpty]: Start isEmpty. Operand 1128 states and 1457 transitions. [2023-12-19 15:13:31,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-19 15:13:31,774 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:13:31,774 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] [2023-12-19 15:13:31,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 15:13:31,774 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:13:31,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:13:31,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1367557715, now seen corresponding path program 1 times [2023-12-19 15:13:31,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:13:31,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130656501] [2023-12-19 15:13:31,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:13:31,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:13:31,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:32,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:13:32,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:32,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:13:32,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:32,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:13:32,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:32,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:13:32,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:32,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:13:32,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:32,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:13:32,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:32,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:13:32,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:32,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:13:32,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:32,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:13:32,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:32,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:13:32,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:32,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:13:32,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:32,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:13:32,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:32,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:13:32,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:32,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:13:32,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:32,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:13:32,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:32,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:13:32,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:32,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:13:32,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:32,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:13:32,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:32,096 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-19 15:13:32,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:13:32,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130656501] [2023-12-19 15:13:32,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130656501] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:13:32,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:13:32,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 15:13:32,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57218558] [2023-12-19 15:13:32,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:13:32,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 15:13:32,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:13:32,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 15:13:32,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-19 15:13:32,099 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) [2023-12-19 15:13:32,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:13:32,577 INFO L93 Difference]: Finished difference Result 2275 states and 2943 transitions. [2023-12-19 15:13:32,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-19 15:13:32,578 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 [2023-12-19 15:13:32,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:13:32,581 INFO L225 Difference]: With dead ends: 2275 [2023-12-19 15:13:32,581 INFO L226 Difference]: Without dead ends: 1560 [2023-12-19 15:13:32,582 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 [2023-12-19 15:13:32,583 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, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 15:13:32,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 1266 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 15:13:32,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560 states. [2023-12-19 15:13:32,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1560 to 1239. [2023-12-19 15:13:32,779 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) [2023-12-19 15:13:32,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 1603 transitions. [2023-12-19 15:13:32,780 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 1603 transitions. Word has length 140 [2023-12-19 15:13:32,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:13:32,781 INFO L495 AbstractCegarLoop]: Abstraction has 1239 states and 1603 transitions. [2023-12-19 15:13:32,781 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) [2023-12-19 15:13:32,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 1603 transitions. [2023-12-19 15:13:32,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-19 15:13:32,782 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:13:32,782 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] [2023-12-19 15:13:32,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 15:13:32,782 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:13:32,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:13:32,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1148702997, now seen corresponding path program 1 times [2023-12-19 15:13:32,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:13:32,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382347852] [2023-12-19 15:13:32,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:13:32,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:13:32,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:32,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:13:32,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:32,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:13:32,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:32,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:13:32,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:32,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:13:32,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:32,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:13:32,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:32,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:13:32,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:32,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:13:32,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:32,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:13:32,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:32,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:13:32,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:32,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:13:32,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:32,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:13:32,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:32,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:13:32,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:32,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:13:32,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:32,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:13:32,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:32,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:13:32,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:32,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:13:32,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:32,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:13:32,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:32,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:13:32,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:32,887 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-19 15:13:32,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:13:32,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382347852] [2023-12-19 15:13:32,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382347852] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:13:32,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:13:32,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 15:13:32,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267232680] [2023-12-19 15:13:32,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:13:32,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 15:13:32,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:13:32,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 15:13:32,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 15:13:32,889 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) [2023-12-19 15:13:33,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:13:33,128 INFO L93 Difference]: Finished difference Result 2734 states and 3519 transitions. [2023-12-19 15:13:33,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 15:13:33,129 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 [2023-12-19 15:13:33,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:13:33,133 INFO L225 Difference]: With dead ends: 2734 [2023-12-19 15:13:33,133 INFO L226 Difference]: Without dead ends: 1496 [2023-12-19 15:13:33,134 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 [2023-12-19 15:13:33,136 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 [2023-12-19 15:13:33,137 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] [2023-12-19 15:13:33,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2023-12-19 15:13:33,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1246. [2023-12-19 15:13:33,362 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) [2023-12-19 15:13:33,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1246 states to 1246 states and 1610 transitions. [2023-12-19 15:13:33,364 INFO L78 Accepts]: Start accepts. Automaton has 1246 states and 1610 transitions. Word has length 140 [2023-12-19 15:13:33,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:13:33,364 INFO L495 AbstractCegarLoop]: Abstraction has 1246 states and 1610 transitions. [2023-12-19 15:13:33,364 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) [2023-12-19 15:13:33,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1246 states and 1610 transitions. [2023-12-19 15:13:33,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-19 15:13:33,365 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:13:33,365 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] [2023-12-19 15:13:33,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 15:13:33,366 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:13:33,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:13:33,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1725001876, now seen corresponding path program 1 times [2023-12-19 15:13:33,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:13:33,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809294590] [2023-12-19 15:13:33,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:13:33,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:13:33,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:33,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:13:33,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:33,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:13:33,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:33,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:13:33,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:33,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:13:33,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:33,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:13:33,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:33,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:13:33,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:33,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:13:33,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:33,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:13:33,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:33,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:13:33,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:33,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:13:33,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:33,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:13:33,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:33,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:13:33,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:33,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:13:33,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:33,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:13:33,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:33,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:13:33,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:33,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:13:33,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:33,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:13:33,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:33,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:13:33,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:33,564 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-19 15:13:33,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:13:33,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809294590] [2023-12-19 15:13:33,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809294590] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:13:33,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:13:33,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 15:13:33,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157111273] [2023-12-19 15:13:33,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:13:33,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 15:13:33,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:13:33,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 15:13:33,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 15:13:33,565 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) [2023-12-19 15:13:33,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:13:33,947 INFO L93 Difference]: Finished difference Result 2530 states and 3262 transitions. [2023-12-19 15:13:33,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 15:13:33,948 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 [2023-12-19 15:13:33,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:13:33,951 INFO L225 Difference]: With dead ends: 2530 [2023-12-19 15:13:33,951 INFO L226 Difference]: Without dead ends: 1285 [2023-12-19 15:13:33,952 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 [2023-12-19 15:13:33,953 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 [2023-12-19 15:13:33,953 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] [2023-12-19 15:13:33,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1285 states. [2023-12-19 15:13:34,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1285 to 971. [2023-12-19 15:13:34,163 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) [2023-12-19 15:13:34,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1262 transitions. [2023-12-19 15:13:34,164 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1262 transitions. Word has length 140 [2023-12-19 15:13:34,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:13:34,164 INFO L495 AbstractCegarLoop]: Abstraction has 971 states and 1262 transitions. [2023-12-19 15:13:34,165 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) [2023-12-19 15:13:34,165 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1262 transitions. [2023-12-19 15:13:34,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-19 15:13:34,165 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:13:34,165 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] [2023-12-19 15:13:34,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 15:13:34,166 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:13:34,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:13:34,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1652213275, now seen corresponding path program 1 times [2023-12-19 15:13:34,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:13:34,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467459701] [2023-12-19 15:13:34,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:13:34,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:13:34,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:34,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:13:34,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:34,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:13:34,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:34,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:13:34,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:34,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:13:34,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:34,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:13:34,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:34,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:13:34,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:34,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:13:34,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:34,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:13:34,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:34,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:13:34,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:34,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:13:34,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:34,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:13:34,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:34,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:13:34,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:34,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:13:34,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:34,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:13:34,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:34,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:13:34,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:34,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:13:34,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:34,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:13:34,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:34,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:13:34,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:34,716 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-19 15:13:34,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:13:34,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467459701] [2023-12-19 15:13:34,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467459701] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:13:34,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:13:34,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 15:13:34,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792760064] [2023-12-19 15:13:34,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:13:34,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 15:13:34,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:13:34,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 15:13:34,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-12-19 15:13:34,717 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) [2023-12-19 15:13:35,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:13:35,609 INFO L93 Difference]: Finished difference Result 2346 states and 3020 transitions. [2023-12-19 15:13:35,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 15:13:35,609 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 [2023-12-19 15:13:35,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:13:35,613 INFO L225 Difference]: With dead ends: 2346 [2023-12-19 15:13:35,613 INFO L226 Difference]: Without dead ends: 1376 [2023-12-19 15:13:35,614 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 [2023-12-19 15:13:35,614 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 [2023-12-19 15:13:35,614 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] [2023-12-19 15:13:35,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2023-12-19 15:13:35,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1027. [2023-12-19 15:13:35,874 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) [2023-12-19 15:13:35,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 1326 transitions. [2023-12-19 15:13:35,876 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 1326 transitions. Word has length 140 [2023-12-19 15:13:35,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:13:35,876 INFO L495 AbstractCegarLoop]: Abstraction has 1027 states and 1326 transitions. [2023-12-19 15:13:35,876 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) [2023-12-19 15:13:35,876 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 1326 transitions. [2023-12-19 15:13:35,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-19 15:13:35,877 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:13:35,877 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] [2023-12-19 15:13:35,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-19 15:13:35,877 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:13:35,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:13:35,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1940564973, now seen corresponding path program 1 times [2023-12-19 15:13:35,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:13:35,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661895954] [2023-12-19 15:13:35,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:13:35,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:13:35,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:37,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:13:37,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:37,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:13:37,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:37,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:13:37,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:37,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:13:37,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:37,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:13:37,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:37,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:13:37,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:37,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:13:37,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:37,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:13:37,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:37,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:13:37,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:37,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:13:37,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:37,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:13:37,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:37,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:13:37,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:37,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:13:37,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:37,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:13:37,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:37,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:13:37,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:37,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:13:37,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:37,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:13:37,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:37,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:13:37,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:37,487 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-19 15:13:37,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:13:37,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661895954] [2023-12-19 15:13:37,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661895954] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:13:37,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:13:37,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2023-12-19 15:13:37,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40015029] [2023-12-19 15:13:37,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:13:37,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-19 15:13:37,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:13:37,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-19 15:13:37,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=490, Unknown=0, NotChecked=0, Total=552 [2023-12-19 15:13:37,489 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) [2023-12-19 15:13:41,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:13:41,856 INFO L93 Difference]: Finished difference Result 1592 states and 2023 transitions. [2023-12-19 15:13:41,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-12-19 15:13:41,857 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 [2023-12-19 15:13:41,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:13:41,861 INFO L225 Difference]: With dead ends: 1592 [2023-12-19 15:13:41,861 INFO L226 Difference]: Without dead ends: 1590 [2023-12-19 15:13:41,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1227 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=860, Invalid=4252, Unknown=0, NotChecked=0, Total=5112 [2023-12-19 15:13:41,862 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, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 15:13:41,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [927 Valid, 1402 Invalid, 1870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 1614 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 15:13:41,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1590 states. [2023-12-19 15:13:42,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1590 to 1135. [2023-12-19 15:13:42,167 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) [2023-12-19 15:13:42,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 1449 transitions. [2023-12-19 15:13:42,168 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 1449 transitions. Word has length 142 [2023-12-19 15:13:42,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:13:42,168 INFO L495 AbstractCegarLoop]: Abstraction has 1135 states and 1449 transitions. [2023-12-19 15:13:42,169 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) [2023-12-19 15:13:42,169 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 1449 transitions. [2023-12-19 15:13:42,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-19 15:13:42,169 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:13:42,170 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] [2023-12-19 15:13:42,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-19 15:13:42,170 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:13:42,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:13:42,170 INFO L85 PathProgramCache]: Analyzing trace with hash 515087050, now seen corresponding path program 1 times [2023-12-19 15:13:42,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:13:42,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126765325] [2023-12-19 15:13:42,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:13:42,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:13:42,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:42,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:13:42,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:42,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:13:42,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:42,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:13:42,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:42,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:13:42,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:42,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:13:42,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:42,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:13:42,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:42,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:13:42,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:42,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:13:42,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:42,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:13:42,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:42,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:13:42,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:42,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:13:42,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:42,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:13:42,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:42,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:13:42,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:42,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:13:42,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:42,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:13:42,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:42,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:13:42,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:42,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:13:42,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:42,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:13:42,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:42,617 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-19 15:13:42,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:13:42,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126765325] [2023-12-19 15:13:42,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126765325] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:13:42,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:13:42,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-19 15:13:42,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587627189] [2023-12-19 15:13:42,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:13:42,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 15:13:42,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:13:42,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 15:13:42,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-12-19 15:13:42,620 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) [2023-12-19 15:13:43,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:13:43,644 INFO L93 Difference]: Finished difference Result 2662 states and 3381 transitions. [2023-12-19 15:13:43,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 15:13:43,645 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 [2023-12-19 15:13:43,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:13:43,649 INFO L225 Difference]: With dead ends: 2662 [2023-12-19 15:13:43,649 INFO L226 Difference]: Without dead ends: 1528 [2023-12-19 15:13:43,650 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 [2023-12-19 15:13:43,651 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 314 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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 [2023-12-19 15:13:43,651 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] [2023-12-19 15:13:43,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2023-12-19 15:13:43,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 1151. [2023-12-19 15:13:43,981 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) [2023-12-19 15:13:43,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 1460 transitions. [2023-12-19 15:13:43,984 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 1460 transitions. Word has length 142 [2023-12-19 15:13:43,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:13:43,984 INFO L495 AbstractCegarLoop]: Abstraction has 1151 states and 1460 transitions. [2023-12-19 15:13:43,985 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) [2023-12-19 15:13:43,985 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 1460 transitions. [2023-12-19 15:13:43,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-19 15:13:43,986 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:13:43,986 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] [2023-12-19 15:13:43,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-19 15:13:43,987 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:13:43,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:13:43,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1721710255, now seen corresponding path program 1 times [2023-12-19 15:13:43,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:13:43,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693241066] [2023-12-19 15:13:43,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:13:43,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:13:44,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:44,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:13:44,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:44,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:13:44,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:44,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:13:44,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:44,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:13:44,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:44,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:13:44,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:44,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:13:44,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:44,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:13:44,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:44,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:13:44,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:44,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:13:44,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:44,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:13:44,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:44,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:13:44,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:44,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:13:44,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:44,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:13:44,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:44,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:13:44,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:44,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:13:44,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:44,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:13:44,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:44,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:13:44,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:44,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:13:44,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:44,125 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-19 15:13:44,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:13:44,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693241066] [2023-12-19 15:13:44,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693241066] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:13:44,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:13:44,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 15:13:44,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373267799] [2023-12-19 15:13:44,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:13:44,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 15:13:44,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:13:44,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 15:13:44,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 15:13:44,126 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) [2023-12-19 15:13:44,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:13:44,476 INFO L93 Difference]: Finished difference Result 2562 states and 3226 transitions. [2023-12-19 15:13:44,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 15:13:44,477 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 [2023-12-19 15:13:44,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:13:44,480 INFO L225 Difference]: With dead ends: 2562 [2023-12-19 15:13:44,480 INFO L226 Difference]: Without dead ends: 1412 [2023-12-19 15:13:44,482 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 [2023-12-19 15:13:44,482 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 [2023-12-19 15:13:44,482 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] [2023-12-19 15:13:44,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2023-12-19 15:13:44,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 1336. [2023-12-19 15:13:44,779 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) [2023-12-19 15:13:44,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1336 states to 1336 states and 1678 transitions. [2023-12-19 15:13:44,780 INFO L78 Accepts]: Start accepts. Automaton has 1336 states and 1678 transitions. Word has length 142 [2023-12-19 15:13:44,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:13:44,780 INFO L495 AbstractCegarLoop]: Abstraction has 1336 states and 1678 transitions. [2023-12-19 15:13:44,780 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) [2023-12-19 15:13:44,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1336 states and 1678 transitions. [2023-12-19 15:13:44,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-19 15:13:44,781 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:13:44,781 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] [2023-12-19 15:13:44,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-19 15:13:44,782 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:13:44,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:13:44,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1508540049, now seen corresponding path program 1 times [2023-12-19 15:13:44,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:13:44,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379063208] [2023-12-19 15:13:44,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:13:44,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:13:44,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:45,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:13:45,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:45,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:13:45,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:45,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:13:45,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:45,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:13:45,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:45,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:13:45,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:45,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:13:45,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:45,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:13:45,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:45,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:13:45,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:45,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:13:45,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:45,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:13:45,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:45,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:13:45,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:45,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:13:45,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:45,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:13:45,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:45,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:13:45,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:45,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:13:45,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:45,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:13:45,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:45,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:13:45,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:45,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:13:45,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:45,105 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-19 15:13:45,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:13:45,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379063208] [2023-12-19 15:13:45,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379063208] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:13:45,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:13:45,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 15:13:45,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783907361] [2023-12-19 15:13:45,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:13:45,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 15:13:45,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:13:45,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 15:13:45,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-19 15:13:45,106 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) [2023-12-19 15:13:45,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:13:45,840 INFO L93 Difference]: Finished difference Result 3016 states and 3780 transitions. [2023-12-19 15:13:45,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 15:13:45,840 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 [2023-12-19 15:13:45,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:13:45,845 INFO L225 Difference]: With dead ends: 3016 [2023-12-19 15:13:45,845 INFO L226 Difference]: Without dead ends: 1681 [2023-12-19 15:13:45,846 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 [2023-12-19 15:13:45,846 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 75 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 15:13:45,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 730 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 15:13:45,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1681 states. [2023-12-19 15:13:46,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1681 to 1497. [2023-12-19 15:13:46,167 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) [2023-12-19 15:13:46,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1497 states to 1497 states and 1863 transitions. [2023-12-19 15:13:46,169 INFO L78 Accepts]: Start accepts. Automaton has 1497 states and 1863 transitions. Word has length 143 [2023-12-19 15:13:46,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:13:46,169 INFO L495 AbstractCegarLoop]: Abstraction has 1497 states and 1863 transitions. [2023-12-19 15:13:46,169 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) [2023-12-19 15:13:46,170 INFO L276 IsEmpty]: Start isEmpty. Operand 1497 states and 1863 transitions. [2023-12-19 15:13:46,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-19 15:13:46,170 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:13:46,170 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] [2023-12-19 15:13:46,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-19 15:13:46,171 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:13:46,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:13:46,171 INFO L85 PathProgramCache]: Analyzing trace with hash 947111974, now seen corresponding path program 1 times [2023-12-19 15:13:46,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:13:46,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830081853] [2023-12-19 15:13:46,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:13:46,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:13:46,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:50,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:13:50,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:50,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:13:50,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:50,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:13:50,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:50,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:13:50,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:50,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:13:50,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:50,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:13:50,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:50,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:13:50,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:50,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:13:50,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:50,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:13:50,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:50,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:13:50,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:50,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:13:50,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:50,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:13:50,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:50,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:13:50,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:50,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:13:50,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:50,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:13:50,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:50,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:13:50,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:50,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:13:50,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:50,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:13:50,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:13:50,214 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-19 15:13:50,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:13:50,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830081853] [2023-12-19 15:13:50,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830081853] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:13:50,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:13:50,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2023-12-19 15:13:50,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964508623] [2023-12-19 15:13:50,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:13:50,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-19 15:13:50,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:13:50,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-19 15:13:50,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=634, Unknown=0, NotChecked=0, Total=702 [2023-12-19 15:13:50,216 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) [2023-12-19 15:14:09,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-19 15:14:40,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:14:40,758 INFO L93 Difference]: Finished difference Result 1992 states and 2457 transitions. [2023-12-19 15:14:40,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-19 15:14:40,759 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 [2023-12-19 15:14:40,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:14:40,763 INFO L225 Difference]: With dead ends: 1992 [2023-12-19 15:14:40,763 INFO L226 Difference]: Without dead ends: 1990 [2023-12-19 15:14:40,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 29.4s TimeCoverageRelationStatistics Valid=461, Invalid=2619, Unknown=0, NotChecked=0, Total=3080 [2023-12-19 15:14:40,764 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 673 mSDsluCounter, 1447 mSDsCounter, 0 mSdLazyCounter, 2245 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.2s 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, 22.5s IncrementalHoareTripleChecker+Time [2023-12-19 15:14:40,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [674 Valid, 1570 Invalid, 2361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 2245 Invalid, 0 Unknown, 0 Unchecked, 22.5s Time] [2023-12-19 15:14:40,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1990 states. [2023-12-19 15:14:41,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1990 to 1583. [2023-12-19 15:14:41,149 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) [2023-12-19 15:14:41,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 1960 transitions. [2023-12-19 15:14:41,151 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 1960 transitions. Word has length 143 [2023-12-19 15:14:41,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:14:41,151 INFO L495 AbstractCegarLoop]: Abstraction has 1583 states and 1960 transitions. [2023-12-19 15:14:41,151 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) [2023-12-19 15:14:41,151 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 1960 transitions. [2023-12-19 15:14:41,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-19 15:14:41,152 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:14:41,152 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] [2023-12-19 15:14:41,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-19 15:14:41,152 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:14:41,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:14:41,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1572847960, now seen corresponding path program 1 times [2023-12-19 15:14:41,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:14:41,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71875981] [2023-12-19 15:14:41,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:14:41,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:14:41,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:41,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:14:41,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:41,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:14:41,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:41,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:14:41,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:41,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:14:41,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:41,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:14:41,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:41,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:14:41,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:41,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:14:41,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:41,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:14:41,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:41,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:14:41,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:41,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:14:41,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:41,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:14:41,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:41,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:14:41,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:41,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:14:41,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:41,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:14:41,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:41,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:14:41,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:41,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:14:41,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:41,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:14:41,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:41,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:14:41,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:41,492 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-19 15:14:41,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:14:41,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71875981] [2023-12-19 15:14:41,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71875981] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:14:41,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:14:41,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 15:14:41,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548585639] [2023-12-19 15:14:41,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:14:41,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 15:14:41,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:14:41,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 15:14:41,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-19 15:14:41,493 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) [2023-12-19 15:14:42,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:14:42,210 INFO L93 Difference]: Finished difference Result 3441 states and 4236 transitions. [2023-12-19 15:14:42,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 15:14:42,211 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 [2023-12-19 15:14:42,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:14:42,215 INFO L225 Difference]: With dead ends: 3441 [2023-12-19 15:14:42,215 INFO L226 Difference]: Without dead ends: 1859 [2023-12-19 15:14:42,217 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 [2023-12-19 15:14:42,217 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 [2023-12-19 15:14:42,217 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] [2023-12-19 15:14:42,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1859 states. [2023-12-19 15:14:42,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1859 to 1794. [2023-12-19 15:14:42,636 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) [2023-12-19 15:14:42,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1794 states to 1794 states and 2203 transitions. [2023-12-19 15:14:42,638 INFO L78 Accepts]: Start accepts. Automaton has 1794 states and 2203 transitions. Word has length 143 [2023-12-19 15:14:42,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:14:42,638 INFO L495 AbstractCegarLoop]: Abstraction has 1794 states and 2203 transitions. [2023-12-19 15:14:42,638 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) [2023-12-19 15:14:42,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1794 states and 2203 transitions. [2023-12-19 15:14:42,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-19 15:14:42,639 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:14:42,639 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] [2023-12-19 15:14:42,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-19 15:14:42,640 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:14:42,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:14:42,640 INFO L85 PathProgramCache]: Analyzing trace with hash -858326360, now seen corresponding path program 1 times [2023-12-19 15:14:42,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:14:42,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406662014] [2023-12-19 15:14:42,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:14:42,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:14:42,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:42,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:14:42,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:42,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:14:42,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:42,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:14:42,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:42,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:14:42,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:42,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:14:42,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:42,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:14:42,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:42,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:14:42,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:42,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:14:42,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:42,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:14:42,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:42,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:14:42,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:42,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:14:42,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:42,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:14:42,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:42,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:14:42,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:42,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:14:42,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:42,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:14:42,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:42,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:14:42,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:42,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:14:42,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:42,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:14:42,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:42,931 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-19 15:14:42,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:14:42,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406662014] [2023-12-19 15:14:42,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406662014] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:14:42,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:14:42,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 15:14:42,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045098280] [2023-12-19 15:14:42,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:14:42,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 15:14:42,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:14:42,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 15:14:42,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-19 15:14:42,933 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) [2023-12-19 15:14:43,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:14:43,694 INFO L93 Difference]: Finished difference Result 3674 states and 4507 transitions. [2023-12-19 15:14:43,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 15:14:43,695 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 [2023-12-19 15:14:43,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:14:43,699 INFO L225 Difference]: With dead ends: 3674 [2023-12-19 15:14:43,699 INFO L226 Difference]: Without dead ends: 1881 [2023-12-19 15:14:43,701 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 [2023-12-19 15:14:43,701 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 [2023-12-19 15:14:43,701 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] [2023-12-19 15:14:43,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1881 states. [2023-12-19 15:14:44,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1881 to 1796. [2023-12-19 15:14:44,111 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) [2023-12-19 15:14:44,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1796 states to 1796 states and 2203 transitions. [2023-12-19 15:14:44,113 INFO L78 Accepts]: Start accepts. Automaton has 1796 states and 2203 transitions. Word has length 143 [2023-12-19 15:14:44,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:14:44,113 INFO L495 AbstractCegarLoop]: Abstraction has 1796 states and 2203 transitions. [2023-12-19 15:14:44,113 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) [2023-12-19 15:14:44,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1796 states and 2203 transitions. [2023-12-19 15:14:44,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-19 15:14:44,114 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:14:44,114 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] [2023-12-19 15:14:44,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-19 15:14:44,114 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:14:44,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:14:44,115 INFO L85 PathProgramCache]: Analyzing trace with hash 916681002, now seen corresponding path program 1 times [2023-12-19 15:14:44,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:14:44,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167193422] [2023-12-19 15:14:44,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:14:44,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:14:44,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:44,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:14:44,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:44,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:14:44,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:44,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:14:44,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:44,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:14:44,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:44,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:14:44,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:44,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:14:44,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:44,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:14:44,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:44,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:14:44,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:44,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:14:44,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:44,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:14:44,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:44,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:14:44,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:44,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:14:44,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:44,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:14:44,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:44,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:14:44,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:44,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:14:44,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:44,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:14:44,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:44,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:14:44,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:44,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:14:44,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:44,342 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-19 15:14:44,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:14:44,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167193422] [2023-12-19 15:14:44,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167193422] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:14:44,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:14:44,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 15:14:44,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028194472] [2023-12-19 15:14:44,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:14:44,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 15:14:44,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:14:44,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 15:14:44,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-19 15:14:44,344 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) [2023-12-19 15:14:44,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:14:44,911 INFO L93 Difference]: Finished difference Result 1868 states and 2288 transitions. [2023-12-19 15:14:44,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 15:14:44,912 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 [2023-12-19 15:14:44,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:14:44,915 INFO L225 Difference]: With dead ends: 1868 [2023-12-19 15:14:44,915 INFO L226 Difference]: Without dead ends: 1866 [2023-12-19 15:14:44,915 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 [2023-12-19 15:14:44,915 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 [2023-12-19 15:14:44,916 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] [2023-12-19 15:14:44,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1866 states. [2023-12-19 15:14:45,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1866 to 1796. [2023-12-19 15:14:45,336 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) [2023-12-19 15:14:45,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1796 states to 1796 states and 2201 transitions. [2023-12-19 15:14:45,338 INFO L78 Accepts]: Start accepts. Automaton has 1796 states and 2201 transitions. Word has length 143 [2023-12-19 15:14:45,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:14:45,339 INFO L495 AbstractCegarLoop]: Abstraction has 1796 states and 2201 transitions. [2023-12-19 15:14:45,339 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) [2023-12-19 15:14:45,339 INFO L276 IsEmpty]: Start isEmpty. Operand 1796 states and 2201 transitions. [2023-12-19 15:14:45,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-19 15:14:45,340 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:14:45,340 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] [2023-12-19 15:14:45,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-19 15:14:45,340 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:14:45,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:14:45,340 INFO L85 PathProgramCache]: Analyzing trace with hash -943758761, now seen corresponding path program 1 times [2023-12-19 15:14:45,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:14:45,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152862934] [2023-12-19 15:14:45,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:14:45,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:14:45,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:45,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:14:45,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:45,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:14:45,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:45,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:14:45,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:45,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:14:45,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:45,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:14:45,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:45,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:14:45,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:45,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:14:45,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:45,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:14:45,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:45,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:14:45,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:45,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:14:45,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:45,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:14:45,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:45,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:14:45,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:45,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:14:45,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:45,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:14:45,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:45,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:14:45,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:45,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:14:45,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:45,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:14:45,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:45,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:14:45,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:45,675 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-19 15:14:45,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:14:45,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152862934] [2023-12-19 15:14:45,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152862934] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:14:45,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:14:45,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 15:14:45,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123810627] [2023-12-19 15:14:45,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:14:45,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 15:14:45,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:14:45,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 15:14:45,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 15:14:45,676 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) [2023-12-19 15:14:46,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:14:46,565 INFO L93 Difference]: Finished difference Result 3980 states and 4863 transitions. [2023-12-19 15:14:46,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 15:14:46,566 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 [2023-12-19 15:14:46,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:14:46,569 INFO L225 Difference]: With dead ends: 3980 [2023-12-19 15:14:46,569 INFO L226 Difference]: Without dead ends: 2185 [2023-12-19 15:14:46,571 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 [2023-12-19 15:14:46,572 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 205 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2023-12-19 15:14:46,572 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] [2023-12-19 15:14:46,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2185 states. [2023-12-19 15:14:46,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2185 to 1673. [2023-12-19 15:14:46,934 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) [2023-12-19 15:14:46,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1673 states to 1673 states and 2029 transitions. [2023-12-19 15:14:46,936 INFO L78 Accepts]: Start accepts. Automaton has 1673 states and 2029 transitions. Word has length 143 [2023-12-19 15:14:46,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:14:46,936 INFO L495 AbstractCegarLoop]: Abstraction has 1673 states and 2029 transitions. [2023-12-19 15:14:46,936 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) [2023-12-19 15:14:46,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1673 states and 2029 transitions. [2023-12-19 15:14:46,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-19 15:14:46,937 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:14:46,937 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] [2023-12-19 15:14:46,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-19 15:14:46,937 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:14:46,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:14:46,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1824395694, now seen corresponding path program 1 times [2023-12-19 15:14:46,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:14:46,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694482870] [2023-12-19 15:14:46,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:14:46,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:14:46,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:48,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:14:48,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:48,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:14:48,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:48,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:14:48,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:48,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:14:48,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:48,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:14:48,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:48,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:14:48,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:48,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:14:48,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:48,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:14:48,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:48,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:14:48,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:48,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:14:48,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:48,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:14:48,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:48,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:14:48,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:48,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:14:48,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:48,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:14:48,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:48,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:14:48,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:48,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:14:48,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:48,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:14:48,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:48,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:14:48,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:48,440 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-19 15:14:48,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:14:48,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694482870] [2023-12-19 15:14:48,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694482870] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:14:48,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:14:48,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-12-19 15:14:48,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200888787] [2023-12-19 15:14:48,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:14:48,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-19 15:14:48,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:14:48,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-19 15:14:48,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2023-12-19 15:14:48,441 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) [2023-12-19 15:14:53,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:14:53,028 INFO L93 Difference]: Finished difference Result 2251 states and 2691 transitions. [2023-12-19 15:14:53,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-19 15:14:53,028 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 [2023-12-19 15:14:53,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:14:53,032 INFO L225 Difference]: With dead ends: 2251 [2023-12-19 15:14:53,032 INFO L226 Difference]: Without dead ends: 2249 [2023-12-19 15:14:53,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=514, Invalid=2138, Unknown=0, NotChecked=0, Total=2652 [2023-12-19 15:14:53,034 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 666 mSDsluCounter, 1311 mSDsCounter, 0 mSdLazyCounter, 1616 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s 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, 2.2s IncrementalHoareTripleChecker+Time [2023-12-19 15:14:53,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [666 Valid, 1474 Invalid, 1767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 1616 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-19 15:14:53,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2249 states. [2023-12-19 15:14:53,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2249 to 1922. [2023-12-19 15:14:53,482 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) [2023-12-19 15:14:53,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1922 states to 1922 states and 2312 transitions. [2023-12-19 15:14:53,484 INFO L78 Accepts]: Start accepts. Automaton has 1922 states and 2312 transitions. Word has length 145 [2023-12-19 15:14:53,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:14:53,484 INFO L495 AbstractCegarLoop]: Abstraction has 1922 states and 2312 transitions. [2023-12-19 15:14:53,484 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) [2023-12-19 15:14:53,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1922 states and 2312 transitions. [2023-12-19 15:14:53,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-19 15:14:53,492 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:14:53,492 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] [2023-12-19 15:14:53,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-19 15:14:53,492 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:14:53,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:14:53,492 INFO L85 PathProgramCache]: Analyzing trace with hash 631256329, now seen corresponding path program 1 times [2023-12-19 15:14:53,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:14:53,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336372406] [2023-12-19 15:14:53,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:14:53,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:14:53,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:54,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:14:54,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:54,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:14:54,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:54,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:14:54,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:54,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:14:54,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:54,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:14:54,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:54,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:14:54,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:54,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:14:54,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:54,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:14:54,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:54,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:14:54,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:54,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:14:54,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:54,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:14:54,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:54,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:14:54,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:54,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:14:54,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:54,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:14:54,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:54,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:14:54,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:54,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:14:54,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:54,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:14:54,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:54,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:14:54,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:14:54,121 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-19 15:14:54,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:14:54,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336372406] [2023-12-19 15:14:54,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336372406] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:14:54,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:14:54,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-12-19 15:14:54,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435052290] [2023-12-19 15:14:54,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:14:54,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-19 15:14:54,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:14:54,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-19 15:14:54,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-12-19 15:14:54,122 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) [2023-12-19 15:14:55,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:14:55,723 INFO L93 Difference]: Finished difference Result 4200 states and 5029 transitions. [2023-12-19 15:14:55,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 15:14:55,724 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 [2023-12-19 15:14:55,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:14:55,728 INFO L225 Difference]: With dead ends: 4200 [2023-12-19 15:14:55,728 INFO L226 Difference]: Without dead ends: 2279 [2023-12-19 15:14:55,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=153, Invalid=549, Unknown=0, NotChecked=0, Total=702 [2023-12-19 15:14:55,737 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 328 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 15:14:55,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 693 Invalid, 915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 15:14:55,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2279 states. [2023-12-19 15:14:56,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2279 to 1962. [2023-12-19 15:14:56,322 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) [2023-12-19 15:14:56,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1962 states to 1962 states and 2347 transitions. [2023-12-19 15:14:56,324 INFO L78 Accepts]: Start accepts. Automaton has 1962 states and 2347 transitions. Word has length 145 [2023-12-19 15:14:56,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:14:56,324 INFO L495 AbstractCegarLoop]: Abstraction has 1962 states and 2347 transitions. [2023-12-19 15:14:56,324 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) [2023-12-19 15:14:56,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1962 states and 2347 transitions. [2023-12-19 15:14:56,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-19 15:14:56,325 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:14:56,325 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] [2023-12-19 15:14:56,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-12-19 15:14:56,326 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:14:56,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:14:56,326 INFO L85 PathProgramCache]: Analyzing trace with hash -507704995, now seen corresponding path program 1 times [2023-12-19 15:14:56,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:14:56,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111288496] [2023-12-19 15:14:56,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:14:56,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:14:56,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat