/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-71.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 01:48:33,355 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 01:48:33,394 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 01:48:33,397 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 01:48:33,397 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 01:48:33,411 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 01:48:33,411 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 01:48:33,412 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 01:48:33,412 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 01:48:33,412 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 01:48:33,413 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 01:48:33,413 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 01:48:33,413 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 01:48:33,413 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 01:48:33,414 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 01:48:33,414 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 01:48:33,414 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 01:48:33,414 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 01:48:33,415 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 01:48:33,415 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 01:48:33,415 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 01:48:33,415 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 01:48:33,416 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 01:48:33,416 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 01:48:33,416 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 01:48:33,416 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 01:48:33,416 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 01:48:33,417 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 01:48:33,417 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 01:48:33,417 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 01:48:33,417 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 01:48:33,417 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 01:48:33,417 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 01:48:33,418 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 01:48:33,418 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 01:48:33,418 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 01:48:33,418 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 01:48:33,418 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 01:48:33,418 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 01:48:33,419 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 01:48:33,419 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 01:48:33,419 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 01:48:33,419 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 01:48:33,419 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 01:48:33,584 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 01:48:33,607 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 01:48:33,609 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 01:48:33,610 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 01:48:33,611 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 01:48:33,611 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-71.i [2023-12-21 01:48:34,723 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 01:48:34,870 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 01:48:34,871 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-71.i [2023-12-21 01:48:34,876 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/860bc04e1/b62acc30bc2141128c445ab48e677ed0/FLAG9adcee587 [2023-12-21 01:48:34,886 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/860bc04e1/b62acc30bc2141128c445ab48e677ed0 [2023-12-21 01:48:34,888 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 01:48:34,888 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 01:48:34,889 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 01:48:34,889 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 01:48:34,893 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 01:48:34,893 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:48:34" (1/1) ... [2023-12-21 01:48:34,894 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@552b51cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:48:34, skipping insertion in model container [2023-12-21 01:48:34,894 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:48:34" (1/1) ... [2023-12-21 01:48:34,920 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 01:48:35,056 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-71.i[916,929] [2023-12-21 01:48:35,101 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 01:48:35,108 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 01:48:35,116 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-71.i[916,929] [2023-12-21 01:48:35,143 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 01:48:35,155 INFO L206 MainTranslator]: Completed translation [2023-12-21 01:48:35,155 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:48:35 WrapperNode [2023-12-21 01:48:35,155 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 01:48:35,156 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 01:48:35,156 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 01:48:35,156 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 01:48:35,161 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:48:35" (1/1) ... [2023-12-21 01:48:35,173 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:48:35" (1/1) ... [2023-12-21 01:48:35,221 INFO L138 Inliner]: procedures = 26, calls = 173, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 495 [2023-12-21 01:48:35,221 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 01:48:35,222 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 01:48:35,222 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 01:48:35,222 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 01:48:35,230 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:48:35" (1/1) ... [2023-12-21 01:48:35,230 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:48:35" (1/1) ... [2023-12-21 01:48:35,234 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:48:35" (1/1) ... [2023-12-21 01:48:35,249 INFO L175 MemorySlicer]: Split 138 memory accesses to 6 slices as follows [2, 20, 16, 85, 7, 8]. 62 percent of accesses are in the largest equivalence class. The 16 initializations are split as follows [2, 3, 3, 5, 1, 2]. The 18 writes are split as follows [0, 3, 3, 8, 1, 3]. [2023-12-21 01:48:35,249 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:48:35" (1/1) ... [2023-12-21 01:48:35,249 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:48:35" (1/1) ... [2023-12-21 01:48:35,263 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:48:35" (1/1) ... [2023-12-21 01:48:35,266 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:48:35" (1/1) ... [2023-12-21 01:48:35,269 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:48:35" (1/1) ... [2023-12-21 01:48:35,271 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:48:35" (1/1) ... [2023-12-21 01:48:35,274 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 01:48:35,275 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 01:48:35,275 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 01:48:35,275 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 01:48:35,276 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:48:35" (1/1) ... [2023-12-21 01:48:35,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 01:48:35,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:48:35,350 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-21 01:48:35,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-21 01:48:35,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 01:48:35,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-21 01:48:35,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-21 01:48:35,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-21 01:48:35,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-12-21 01:48:35,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-12-21 01:48:35,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-12-21 01:48:35,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-21 01:48:35,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-21 01:48:35,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-21 01:48:35,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-12-21 01:48:35,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-12-21 01:48:35,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-12-21 01:48:35,385 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-21 01:48:35,385 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-21 01:48:35,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 01:48:35,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-21 01:48:35,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-21 01:48:35,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-21 01:48:35,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-12-21 01:48:35,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-12-21 01:48:35,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 01:48:35,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 01:48:35,516 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 01:48:35,519 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 01:48:35,855 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 01:48:35,894 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 01:48:35,894 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-21 01:48:35,894 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:48:35 BoogieIcfgContainer [2023-12-21 01:48:35,894 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 01:48:35,896 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 01:48:35,897 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 01:48:35,899 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 01:48:35,899 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 01:48:34" (1/3) ... [2023-12-21 01:48:35,900 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b5f6eef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:48:35, skipping insertion in model container [2023-12-21 01:48:35,900 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:48:35" (2/3) ... [2023-12-21 01:48:35,900 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b5f6eef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:48:35, skipping insertion in model container [2023-12-21 01:48:35,900 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:48:35" (3/3) ... [2023-12-21 01:48:35,901 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-a_file-71.i [2023-12-21 01:48:35,916 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 01:48:35,916 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 01:48:35,963 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 01:48:35,968 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;@76d64ab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 01:48:35,968 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 01:48:35,973 INFO L276 IsEmpty]: Start isEmpty. Operand has 98 states, 76 states have (on average 1.4210526315789473) internal successors, (108), 77 states have internal predecessors, (108), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-21 01:48:35,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-21 01:48:35,991 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:48:35,992 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:48:35,992 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:48:36,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:48:36,000 INFO L85 PathProgramCache]: Analyzing trace with hash 2045531038, now seen corresponding path program 1 times [2023-12-21 01:48:36,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:48:36,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948947444] [2023-12-21 01:48:36,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:48:36,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:48:36,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:36,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:48:36,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:36,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:48:36,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:36,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:48:36,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:36,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:48:36,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:36,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:48:36,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:36,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:48:36,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:36,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:48:36,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:36,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:48:36,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:36,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:48:36,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:36,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:48:36,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:36,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:48:36,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:36,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:48:36,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:36,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:48:36,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:36,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:48:36,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:36,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:48:36,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:36,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:48:36,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:36,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:48:36,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:36,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:48:36,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:36,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:48:36,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:36,331 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-21 01:48:36,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:48:36,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948947444] [2023-12-21 01:48:36,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948947444] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:48:36,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:48:36,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 01:48:36,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783952595] [2023-12-21 01:48:36,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:48:36,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 01:48:36,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:48:36,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 01:48:36,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 01:48:36,370 INFO L87 Difference]: Start difference. First operand has 98 states, 76 states have (on average 1.4210526315789473) internal successors, (108), 77 states have internal predecessors, (108), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-21 01:48:36,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:48:36,416 INFO L93 Difference]: Finished difference Result 193 states and 309 transitions. [2023-12-21 01:48:36,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 01:48:36,418 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) Word has length 139 [2023-12-21 01:48:36,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:48:36,426 INFO L225 Difference]: With dead ends: 193 [2023-12-21 01:48:36,426 INFO L226 Difference]: Without dead ends: 96 [2023-12-21 01:48:36,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 01:48:36,432 INFO L413 NwaCegarLoop]: 135 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, 135 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 01:48:36,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 135 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 01:48:36,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-12-21 01:48:36,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2023-12-21 01:48:36,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 75 states have (on average 1.3466666666666667) internal successors, (101), 75 states have internal predecessors, (101), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-21 01:48:36,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 139 transitions. [2023-12-21 01:48:36,462 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 139 transitions. Word has length 139 [2023-12-21 01:48:36,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:48:36,463 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 139 transitions. [2023-12-21 01:48:36,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-21 01:48:36,463 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 139 transitions. [2023-12-21 01:48:36,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-21 01:48:36,465 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:48:36,466 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:48:36,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 01:48:36,466 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:48:36,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:48:36,466 INFO L85 PathProgramCache]: Analyzing trace with hash -433866812, now seen corresponding path program 1 times [2023-12-21 01:48:36,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:48:36,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530995014] [2023-12-21 01:48:36,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:48:36,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:48:36,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:36,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:48:36,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:36,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:48:36,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:36,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:48:36,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:36,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:48:36,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:36,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:48:36,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:36,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:48:36,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:36,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:48:36,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:36,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:48:36,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:36,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:48:36,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:36,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:48:36,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:36,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:48:36,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:36,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:48:36,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:36,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:48:36,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:36,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:48:36,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:36,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:48:36,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:36,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:48:36,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:36,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:48:36,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:36,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:48:36,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:36,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:48:36,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:36,782 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-21 01:48:36,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:48:36,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530995014] [2023-12-21 01:48:36,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530995014] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:48:36,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:48:36,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 01:48:36,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170004457] [2023-12-21 01:48:36,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:48:36,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 01:48:36,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:48:36,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 01:48:36,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 01:48:36,785 INFO L87 Difference]: Start difference. First operand 96 states and 139 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-21 01:48:36,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:48:36,867 INFO L93 Difference]: Finished difference Result 199 states and 288 transitions. [2023-12-21 01:48:36,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 01:48:36,867 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 139 [2023-12-21 01:48:36,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:48:36,869 INFO L225 Difference]: With dead ends: 199 [2023-12-21 01:48:36,869 INFO L226 Difference]: Without dead ends: 104 [2023-12-21 01:48:36,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:48:36,870 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 12 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 01:48:36,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 393 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 01:48:36,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-12-21 01:48:36,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 98. [2023-12-21 01:48:36,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 77 states have (on average 1.3376623376623376) internal successors, (103), 77 states have internal predecessors, (103), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-21 01:48:36,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 141 transitions. [2023-12-21 01:48:36,882 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 141 transitions. Word has length 139 [2023-12-21 01:48:36,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:48:36,883 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 141 transitions. [2023-12-21 01:48:36,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-21 01:48:36,883 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 141 transitions. [2023-12-21 01:48:36,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-21 01:48:36,885 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:48:36,885 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:48:36,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 01:48:36,885 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:48:36,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:48:36,886 INFO L85 PathProgramCache]: Analyzing trace with hash -376608510, now seen corresponding path program 1 times [2023-12-21 01:48:36,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:48:36,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138046522] [2023-12-21 01:48:36,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:48:36,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:48:36,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:37,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:48:37,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:37,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:48:37,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:37,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:48:37,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:37,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:48:37,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:37,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:48:37,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:37,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:48:37,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:37,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:48:37,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:37,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:48:37,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:37,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:48:37,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:37,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:48:37,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:37,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:48:37,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:37,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:48:37,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:37,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:48:37,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:37,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:48:37,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:37,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:48:37,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:37,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:48:37,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:37,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:48:37,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:37,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:48:37,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:37,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:48:37,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:37,093 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-21 01:48:37,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:48:37,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138046522] [2023-12-21 01:48:37,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138046522] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:48:37,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:48:37,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 01:48:37,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557662767] [2023-12-21 01:48:37,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:48:37,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 01:48:37,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:48:37,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 01:48:37,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 01:48:37,095 INFO L87 Difference]: Start difference. First operand 98 states and 141 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-21 01:48:37,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:48:37,124 INFO L93 Difference]: Finished difference Result 199 states and 286 transitions. [2023-12-21 01:48:37,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 01:48:37,128 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 139 [2023-12-21 01:48:37,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:48:37,129 INFO L225 Difference]: With dead ends: 199 [2023-12-21 01:48:37,129 INFO L226 Difference]: Without dead ends: 102 [2023-12-21 01:48:37,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:48:37,131 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 3 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 01:48:37,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 394 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 01:48:37,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-12-21 01:48:37,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2023-12-21 01:48:37,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 79 states have (on average 1.3291139240506329) internal successors, (105), 79 states have internal predecessors, (105), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-21 01:48:37,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 143 transitions. [2023-12-21 01:48:37,141 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 143 transitions. Word has length 139 [2023-12-21 01:48:37,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:48:37,142 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 143 transitions. [2023-12-21 01:48:37,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-21 01:48:37,142 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 143 transitions. [2023-12-21 01:48:37,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-21 01:48:37,143 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:48:37,143 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:48:37,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 01:48:37,143 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:48:37,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:48:37,144 INFO L85 PathProgramCache]: Analyzing trace with hash -376548928, now seen corresponding path program 1 times [2023-12-21 01:48:37,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:48:37,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461248682] [2023-12-21 01:48:37,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:48:37,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:48:37,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:37,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:48:37,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:37,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:48:37,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:37,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:48:37,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:37,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:48:37,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:37,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:48:37,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:37,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:48:37,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:37,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:48:37,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:37,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:48:37,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:37,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:48:37,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:37,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:48:37,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:37,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:48:37,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:37,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:48:37,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:37,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:48:37,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:37,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:48:37,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:37,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:48:37,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:37,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:48:37,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:37,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:48:37,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:37,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:48:37,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:37,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:48:37,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:37,474 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-21 01:48:37,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:48:37,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461248682] [2023-12-21 01:48:37,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461248682] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:48:37,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:48:37,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 01:48:37,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153708712] [2023-12-21 01:48:37,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:48:37,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 01:48:37,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:48:37,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 01:48:37,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:48:37,478 INFO L87 Difference]: Start difference. First operand 100 states and 143 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, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-21 01:48:37,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:48:37,562 INFO L93 Difference]: Finished difference Result 247 states and 352 transitions. [2023-12-21 01:48:37,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 01:48:37,563 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, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 139 [2023-12-21 01:48:37,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:48:37,566 INFO L225 Difference]: With dead ends: 247 [2023-12-21 01:48:37,566 INFO L226 Difference]: Without dead ends: 148 [2023-12-21 01:48:37,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:48:37,576 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 91 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 01:48:37,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 627 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 01:48:37,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-12-21 01:48:37,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 102. [2023-12-21 01:48:37,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 81 states have (on average 1.3209876543209877) internal successors, (107), 81 states have internal predecessors, (107), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-21 01:48:37,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 145 transitions. [2023-12-21 01:48:37,582 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 145 transitions. Word has length 139 [2023-12-21 01:48:37,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:48:37,583 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 145 transitions. [2023-12-21 01:48:37,583 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, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-21 01:48:37,583 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 145 transitions. [2023-12-21 01:48:37,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-21 01:48:37,584 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:48:37,584 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:48:37,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 01:48:37,585 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:48:37,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:48:37,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1259755813, now seen corresponding path program 1 times [2023-12-21 01:48:37,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:48:37,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588105231] [2023-12-21 01:48:37,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:48:37,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:48:37,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:38,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:48:38,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:38,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:48:38,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:38,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:48:38,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:38,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:48:38,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:38,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:48:38,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:38,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:48:38,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:38,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:48:38,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:38,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:48:38,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:38,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:48:38,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:38,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:48:38,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:38,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:48:38,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:38,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:48:38,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:38,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:48:38,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:38,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:48:38,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:38,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:48:38,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:38,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:48:38,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:38,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:48:38,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:38,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:48:38,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:38,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:48:38,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:38,051 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-21 01:48:38,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:48:38,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588105231] [2023-12-21 01:48:38,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588105231] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:48:38,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:48:38,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 01:48:38,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040750513] [2023-12-21 01:48:38,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:48:38,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 01:48:38,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:48:38,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 01:48:38,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:48:38,054 INFO L87 Difference]: Start difference. First operand 102 states and 145 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-21 01:48:38,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:48:38,173 INFO L93 Difference]: Finished difference Result 297 states and 419 transitions. [2023-12-21 01:48:38,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 01:48:38,174 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 140 [2023-12-21 01:48:38,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:48:38,175 INFO L225 Difference]: With dead ends: 297 [2023-12-21 01:48:38,175 INFO L226 Difference]: Without dead ends: 196 [2023-12-21 01:48:38,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-21 01:48:38,180 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 149 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:48:38,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 803 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 01:48:38,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2023-12-21 01:48:38,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 114. [2023-12-21 01:48:38,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 93 states have (on average 1.3440860215053763) internal successors, (125), 93 states have internal predecessors, (125), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-21 01:48:38,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 163 transitions. [2023-12-21 01:48:38,197 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 163 transitions. Word has length 140 [2023-12-21 01:48:38,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:48:38,197 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 163 transitions. [2023-12-21 01:48:38,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-21 01:48:38,197 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 163 transitions. [2023-12-21 01:48:38,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 01:48:38,198 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:48:38,199 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:48:38,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 01:48:38,199 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:48:38,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:48:38,199 INFO L85 PathProgramCache]: Analyzing trace with hash 881140615, now seen corresponding path program 1 times [2023-12-21 01:48:38,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:48:38,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483233496] [2023-12-21 01:48:38,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:48:38,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:48:38,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:39,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:48:39,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:39,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:48:39,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:39,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:48:39,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:39,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:48:39,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:39,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:48:39,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:39,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:48:39,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:39,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:48:39,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:39,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:48:39,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:39,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:48:39,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:39,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:48:39,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:39,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:48:39,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:39,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:48:39,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:39,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:48:39,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:39,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:48:39,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:39,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:48:39,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:39,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:48:39,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:39,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:48:39,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:39,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:48:39,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:39,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:48:39,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:39,547 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-21 01:48:39,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:48:39,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483233496] [2023-12-21 01:48:39,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483233496] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:48:39,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:48:39,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 01:48:39,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366229887] [2023-12-21 01:48:39,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:48:39,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 01:48:39,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:48:39,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 01:48:39,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-12-21 01:48:39,549 INFO L87 Difference]: Start difference. First operand 114 states and 163 transitions. Second operand has 11 states, 9 states have (on average 5.444444444444445) internal successors, (49), 11 states have internal predecessors, (49), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-21 01:48:40,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:48:40,549 INFO L93 Difference]: Finished difference Result 422 states and 594 transitions. [2023-12-21 01:48:40,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 01:48:40,549 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 5.444444444444445) internal successors, (49), 11 states have internal predecessors, (49), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) Word has length 141 [2023-12-21 01:48:40,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:48:40,551 INFO L225 Difference]: With dead ends: 422 [2023-12-21 01:48:40,551 INFO L226 Difference]: Without dead ends: 309 [2023-12-21 01:48:40,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2023-12-21 01:48:40,552 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 317 mSDsluCounter, 1353 mSDsCounter, 0 mSdLazyCounter, 784 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 1557 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 01:48:40,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 1557 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 784 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 01:48:40,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2023-12-21 01:48:40,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 191. [2023-12-21 01:48:40,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 156 states have (on average 1.3269230769230769) internal successors, (207), 157 states have internal predecessors, (207), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-21 01:48:40,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 271 transitions. [2023-12-21 01:48:40,576 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 271 transitions. Word has length 141 [2023-12-21 01:48:40,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:48:40,576 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 271 transitions. [2023-12-21 01:48:40,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 5.444444444444445) internal successors, (49), 11 states have internal predecessors, (49), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-21 01:48:40,577 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 271 transitions. [2023-12-21 01:48:40,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 01:48:40,582 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:48:40,583 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:48:40,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 01:48:40,584 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:48:40,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:48:40,584 INFO L85 PathProgramCache]: Analyzing trace with hash 563668448, now seen corresponding path program 1 times [2023-12-21 01:48:40,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:48:40,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191740126] [2023-12-21 01:48:40,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:48:40,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:48:40,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:40,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:48:40,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:40,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:48:40,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:40,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:48:40,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:40,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:48:40,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:40,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:48:40,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:40,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:48:40,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:40,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:48:40,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:40,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:48:40,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:40,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:48:40,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:40,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:48:40,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:40,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:48:40,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:40,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:48:40,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:40,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:48:40,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:40,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:48:40,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:40,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:48:40,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:40,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:48:40,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:40,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:48:40,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:40,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:48:40,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:40,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:48:40,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:40,920 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-21 01:48:40,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:48:40,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191740126] [2023-12-21 01:48:40,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191740126] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:48:40,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:48:40,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 01:48:40,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119628842] [2023-12-21 01:48:40,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:48:40,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 01:48:40,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:48:40,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 01:48:40,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:48:40,923 INFO L87 Difference]: Start difference. First operand 191 states and 271 transitions. Second operand has 6 states, 5 states have (on average 9.8) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-21 01:48:41,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:48:41,015 INFO L93 Difference]: Finished difference Result 444 states and 620 transitions. [2023-12-21 01:48:41,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 01:48:41,016 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) Word has length 141 [2023-12-21 01:48:41,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:48:41,018 INFO L225 Difference]: With dead ends: 444 [2023-12-21 01:48:41,018 INFO L226 Difference]: Without dead ends: 254 [2023-12-21 01:48:41,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:48:41,020 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 111 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:48:41,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 635 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 01:48:41,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2023-12-21 01:48:41,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 229. [2023-12-21 01:48:41,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 188 states have (on average 1.297872340425532) internal successors, (244), 190 states have internal predecessors, (244), 36 states have call successors, (36), 4 states have call predecessors, (36), 4 states have return successors, (36), 34 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-21 01:48:41,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 316 transitions. [2023-12-21 01:48:41,041 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 316 transitions. Word has length 141 [2023-12-21 01:48:41,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:48:41,041 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 316 transitions. [2023-12-21 01:48:41,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-21 01:48:41,042 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 316 transitions. [2023-12-21 01:48:41,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-21 01:48:41,043 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:48:41,043 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:48:41,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 01:48:41,043 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:48:41,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:48:41,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1149418449, now seen corresponding path program 1 times [2023-12-21 01:48:41,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:48:41,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649455423] [2023-12-21 01:48:41,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:48:41,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:48:41,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:41,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:48:41,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:41,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:48:41,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:41,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:48:41,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:41,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:48:41,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:41,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:48:41,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:41,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:48:41,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:41,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:48:41,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:41,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:48:41,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:41,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:48:41,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:41,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:48:41,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:41,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:48:41,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:41,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:48:41,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:41,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:48:41,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:41,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:48:41,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:41,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:48:41,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:41,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:48:41,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:41,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:48:41,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:41,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:48:41,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:41,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:48:41,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:41,394 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-21 01:48:41,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:48:41,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649455423] [2023-12-21 01:48:41,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649455423] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:48:41,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:48:41,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 01:48:41,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838319413] [2023-12-21 01:48:41,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:48:41,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 01:48:41,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:48:41,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 01:48:41,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:48:41,396 INFO L87 Difference]: Start difference. First operand 229 states and 316 transitions. Second operand has 6 states, 5 states have (on average 10.0) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-21 01:48:41,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:48:41,498 INFO L93 Difference]: Finished difference Result 458 states and 627 transitions. [2023-12-21 01:48:41,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 01:48:41,499 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.0) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) Word has length 142 [2023-12-21 01:48:41,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:48:41,501 INFO L225 Difference]: With dead ends: 458 [2023-12-21 01:48:41,501 INFO L226 Difference]: Without dead ends: 230 [2023-12-21 01:48:41,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:48:41,502 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 101 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:48:41,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 754 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 01:48:41,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2023-12-21 01:48:41,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 191. [2023-12-21 01:48:41,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 154 states have (on average 1.2792207792207793) internal successors, (197), 155 states have internal predecessors, (197), 32 states have call successors, (32), 4 states have call predecessors, (32), 4 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-21 01:48:41,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 261 transitions. [2023-12-21 01:48:41,521 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 261 transitions. Word has length 142 [2023-12-21 01:48:41,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:48:41,521 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 261 transitions. [2023-12-21 01:48:41,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.0) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-21 01:48:41,522 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 261 transitions. [2023-12-21 01:48:41,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-21 01:48:41,522 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:48:41,523 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:48:41,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 01:48:41,523 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:48:41,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:48:41,523 INFO L85 PathProgramCache]: Analyzing trace with hash -85271137, now seen corresponding path program 1 times [2023-12-21 01:48:41,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:48:41,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277890174] [2023-12-21 01:48:41,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:48:41,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:48:41,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:42,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:48:42,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:42,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:48:42,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:42,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:48:42,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:42,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:48:42,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:42,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:48:42,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:42,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:48:42,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:42,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:48:42,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:42,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:48:42,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:42,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:48:42,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:42,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:48:42,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:42,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:48:42,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:42,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:48:42,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:42,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:48:42,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:42,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:48:42,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:42,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:48:42,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:42,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:48:42,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:42,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:48:42,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:42,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:48:42,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:42,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:48:42,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:42,580 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-21 01:48:42,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:48:42,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277890174] [2023-12-21 01:48:42,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277890174] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:48:42,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:48:42,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 01:48:42,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663078318] [2023-12-21 01:48:42,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:48:42,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 01:48:42,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:48:42,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 01:48:42,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-12-21 01:48:42,582 INFO L87 Difference]: Start difference. First operand 191 states and 261 transitions. Second operand has 10 states, 8 states have (on average 6.25) internal successors, (50), 10 states have internal predecessors, (50), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-21 01:48:43,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:48:43,089 INFO L93 Difference]: Finished difference Result 505 states and 686 transitions. [2023-12-21 01:48:43,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 01:48:43,089 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 6.25) internal successors, (50), 10 states have internal predecessors, (50), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) Word has length 142 [2023-12-21 01:48:43,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:48:43,091 INFO L225 Difference]: With dead ends: 505 [2023-12-21 01:48:43,091 INFO L226 Difference]: Without dead ends: 315 [2023-12-21 01:48:43,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-12-21 01:48:43,092 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 170 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 01:48:43,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 648 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 01:48:43,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2023-12-21 01:48:43,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 204. [2023-12-21 01:48:43,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 167 states have (on average 1.2874251497005988) internal successors, (215), 168 states have internal predecessors, (215), 32 states have call successors, (32), 4 states have call predecessors, (32), 4 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-21 01:48:43,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 279 transitions. [2023-12-21 01:48:43,111 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 279 transitions. Word has length 142 [2023-12-21 01:48:43,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:48:43,111 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 279 transitions. [2023-12-21 01:48:43,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 6.25) internal successors, (50), 10 states have internal predecessors, (50), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-21 01:48:43,111 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 279 transitions. [2023-12-21 01:48:43,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-21 01:48:43,112 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:48:43,112 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:48:43,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 01:48:43,112 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:48:43,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:48:43,113 INFO L85 PathProgramCache]: Analyzing trace with hash 925846113, now seen corresponding path program 1 times [2023-12-21 01:48:43,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:48:43,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350164102] [2023-12-21 01:48:43,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:48:43,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:48:43,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:43,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:48:43,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:43,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:48:43,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:43,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:48:43,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:43,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:48:43,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:43,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:48:43,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:43,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:48:43,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:43,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:48:43,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:43,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:48:43,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:43,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:48:43,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:43,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:48:43,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:43,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:48:43,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:43,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:48:43,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:43,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:48:43,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:43,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:48:43,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:43,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:48:43,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:43,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:48:43,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:43,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:48:43,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:43,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:48:43,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:43,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:48:43,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:43,599 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-21 01:48:43,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:48:43,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350164102] [2023-12-21 01:48:43,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350164102] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:48:43,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:48:43,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 01:48:43,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457857312] [2023-12-21 01:48:43,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:48:43,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 01:48:43,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:48:43,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 01:48:43,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 01:48:43,600 INFO L87 Difference]: Start difference. First operand 204 states and 279 transitions. Second operand has 9 states, 8 states have (on average 6.25) internal successors, (50), 9 states have internal predecessors, (50), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-21 01:48:43,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:48:43,888 INFO L93 Difference]: Finished difference Result 478 states and 648 transitions. [2023-12-21 01:48:43,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 01:48:43,889 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.25) internal successors, (50), 9 states have internal predecessors, (50), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) Word has length 142 [2023-12-21 01:48:43,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:48:43,890 INFO L225 Difference]: With dead ends: 478 [2023-12-21 01:48:43,890 INFO L226 Difference]: Without dead ends: 275 [2023-12-21 01:48:43,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-12-21 01:48:43,891 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 167 mSDsluCounter, 940 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 1129 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 01:48:43,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 1129 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 01:48:43,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2023-12-21 01:48:43,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 272. [2023-12-21 01:48:43,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 217 states have (on average 1.2580645161290323) internal successors, (273), 219 states have internal predecessors, (273), 47 states have call successors, (47), 7 states have call predecessors, (47), 7 states have return successors, (47), 45 states have call predecessors, (47), 47 states have call successors, (47) [2023-12-21 01:48:43,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 367 transitions. [2023-12-21 01:48:43,921 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 367 transitions. Word has length 142 [2023-12-21 01:48:43,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:48:43,921 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 367 transitions. [2023-12-21 01:48:43,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.25) internal successors, (50), 9 states have internal predecessors, (50), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-21 01:48:43,921 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 367 transitions. [2023-12-21 01:48:43,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-21 01:48:43,922 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:48:43,922 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:48:43,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 01:48:43,922 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:48:43,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:48:43,922 INFO L85 PathProgramCache]: Analyzing trace with hash -219284643, now seen corresponding path program 1 times [2023-12-21 01:48:43,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:48:43,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100218083] [2023-12-21 01:48:43,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:48:43,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:48:43,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:44,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:48:44,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:44,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:48:44,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:44,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:48:44,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:44,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:48:44,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:44,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:48:44,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:44,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:48:44,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:44,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:48:44,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:44,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:48:44,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:44,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:48:44,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:44,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:48:44,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:44,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:48:44,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:44,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:48:44,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:44,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:48:44,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:44,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:48:44,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:44,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:48:44,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:44,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:48:44,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:44,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:48:44,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:44,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:48:44,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:44,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:48:44,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:44,140 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-21 01:48:44,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:48:44,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100218083] [2023-12-21 01:48:44,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100218083] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:48:44,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:48:44,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 01:48:44,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090537395] [2023-12-21 01:48:44,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:48:44,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 01:48:44,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:48:44,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 01:48:44,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:48:44,141 INFO L87 Difference]: Start difference. First operand 272 states and 367 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, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-21 01:48:44,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:48:44,390 INFO L93 Difference]: Finished difference Result 649 states and 878 transitions. [2023-12-21 01:48:44,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 01:48:44,390 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, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 142 [2023-12-21 01:48:44,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:48:44,392 INFO L225 Difference]: With dead ends: 649 [2023-12-21 01:48:44,392 INFO L226 Difference]: Without dead ends: 378 [2023-12-21 01:48:44,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-12-21 01:48:44,393 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 198 mSDsluCounter, 861 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 1068 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 01:48:44,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 1068 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 01:48:44,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2023-12-21 01:48:44,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 276. [2023-12-21 01:48:44,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 221 states have (on average 1.253393665158371) internal successors, (277), 223 states have internal predecessors, (277), 47 states have call successors, (47), 7 states have call predecessors, (47), 7 states have return successors, (47), 45 states have call predecessors, (47), 47 states have call successors, (47) [2023-12-21 01:48:44,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 371 transitions. [2023-12-21 01:48:44,444 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 371 transitions. Word has length 142 [2023-12-21 01:48:44,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:48:44,445 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 371 transitions. [2023-12-21 01:48:44,445 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, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-21 01:48:44,445 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 371 transitions. [2023-12-21 01:48:44,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-21 01:48:44,446 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:48:44,446 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:48:44,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 01:48:44,446 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:48:44,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:48:44,446 INFO L85 PathProgramCache]: Analyzing trace with hash 791832607, now seen corresponding path program 1 times [2023-12-21 01:48:44,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:48:44,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596565541] [2023-12-21 01:48:44,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:48:44,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:48:44,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:45,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:48:45,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:45,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:48:45,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:45,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:48:45,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:45,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:48:45,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:45,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:48:45,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:45,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:48:45,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:45,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:48:45,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:45,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:48:45,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:45,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:48:45,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:45,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:48:45,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:45,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:48:45,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:45,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:48:45,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:45,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:48:45,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:45,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:48:45,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:45,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:48:45,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:45,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:48:45,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:45,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:48:45,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:45,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:48:45,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:45,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:48:45,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:45,309 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-21 01:48:45,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:48:45,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596565541] [2023-12-21 01:48:45,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596565541] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:48:45,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:48:45,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 01:48:45,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352736734] [2023-12-21 01:48:45,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:48:45,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 01:48:45,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:48:45,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 01:48:45,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-12-21 01:48:45,310 INFO L87 Difference]: Start difference. First operand 276 states and 371 transitions. Second operand has 11 states, 9 states have (on average 5.555555555555555) internal successors, (50), 11 states have internal predecessors, (50), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-21 01:48:46,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:48:46,237 INFO L93 Difference]: Finished difference Result 701 states and 938 transitions. [2023-12-21 01:48:46,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 01:48:46,237 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 5.555555555555555) internal successors, (50), 11 states have internal predecessors, (50), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) Word has length 142 [2023-12-21 01:48:46,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:48:46,239 INFO L225 Difference]: With dead ends: 701 [2023-12-21 01:48:46,239 INFO L226 Difference]: Without dead ends: 426 [2023-12-21 01:48:46,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2023-12-21 01:48:46,240 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 232 mSDsluCounter, 1245 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 1446 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 01:48:46,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 1446 Invalid, 875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 867 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 01:48:46,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2023-12-21 01:48:46,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 271. [2023-12-21 01:48:46,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 216 states have (on average 1.2546296296296295) internal successors, (271), 218 states have internal predecessors, (271), 47 states have call successors, (47), 7 states have call predecessors, (47), 7 states have return successors, (47), 45 states have call predecessors, (47), 47 states have call successors, (47) [2023-12-21 01:48:46,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 365 transitions. [2023-12-21 01:48:46,310 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 365 transitions. Word has length 142 [2023-12-21 01:48:46,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:48:46,310 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 365 transitions. [2023-12-21 01:48:46,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 5.555555555555555) internal successors, (50), 11 states have internal predecessors, (50), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-21 01:48:46,310 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 365 transitions. [2023-12-21 01:48:46,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-21 01:48:46,312 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:48:46,312 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:48:46,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 01:48:46,312 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:48:46,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:48:46,313 INFO L85 PathProgramCache]: Analyzing trace with hash -310840564, now seen corresponding path program 1 times [2023-12-21 01:48:46,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:48:46,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068210073] [2023-12-21 01:48:46,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:48:46,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:48:46,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:46,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:48:46,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:46,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:48:46,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:46,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:48:46,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:46,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:48:46,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:46,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:48:46,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:46,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:48:46,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:46,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:48:46,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:46,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:48:46,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:46,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:48:46,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:46,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:48:46,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:46,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:48:46,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:46,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:48:46,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:46,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:48:46,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:46,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:48:46,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:46,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:48:46,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:46,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:48:46,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:46,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:48:46,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:46,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:48:46,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:46,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:48:46,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:46,883 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-21 01:48:46,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:48:46,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068210073] [2023-12-21 01:48:46,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068210073] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:48:46,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:48:46,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 01:48:46,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146134546] [2023-12-21 01:48:46,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:48:46,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 01:48:46,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:48:46,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 01:48:46,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-12-21 01:48:46,884 INFO L87 Difference]: Start difference. First operand 271 states and 365 transitions. Second operand has 11 states, 10 states have (on average 5.1) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-21 01:48:47,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:48:47,501 INFO L93 Difference]: Finished difference Result 701 states and 942 transitions. [2023-12-21 01:48:47,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 01:48:47,501 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.1) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) Word has length 143 [2023-12-21 01:48:47,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:48:47,504 INFO L225 Difference]: With dead ends: 701 [2023-12-21 01:48:47,504 INFO L226 Difference]: Without dead ends: 431 [2023-12-21 01:48:47,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2023-12-21 01:48:47,505 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 190 mSDsluCounter, 1180 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 1365 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 01:48:47,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 1365 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 01:48:47,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2023-12-21 01:48:47,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 289. [2023-12-21 01:48:47,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 234 states have (on average 1.264957264957265) internal successors, (296), 236 states have internal predecessors, (296), 47 states have call successors, (47), 7 states have call predecessors, (47), 7 states have return successors, (47), 45 states have call predecessors, (47), 47 states have call successors, (47) [2023-12-21 01:48:47,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 390 transitions. [2023-12-21 01:48:47,542 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 390 transitions. Word has length 143 [2023-12-21 01:48:47,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:48:47,542 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 390 transitions. [2023-12-21 01:48:47,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.1) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-21 01:48:47,543 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 390 transitions. [2023-12-21 01:48:47,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-21 01:48:47,544 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:48:47,544 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:48:47,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 01:48:47,545 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:48:47,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:48:47,545 INFO L85 PathProgramCache]: Analyzing trace with hash -2035147467, now seen corresponding path program 1 times [2023-12-21 01:48:47,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:48:47,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287422739] [2023-12-21 01:48:47,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:48:47,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:48:47,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:47,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:48:47,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:47,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:48:47,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:47,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:48:47,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:47,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:48:47,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:47,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:48:47,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:47,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:48:47,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:47,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:48:47,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:47,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:48:47,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:47,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:48:47,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:47,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:48:47,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:47,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:48:47,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:47,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:48:47,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:47,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:48:47,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:47,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:48:47,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:47,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:48:47,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:47,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:48:47,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:47,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:48:47,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:47,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:48:47,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:47,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:48:47,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:47,705 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-21 01:48:47,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:48:47,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287422739] [2023-12-21 01:48:47,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287422739] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:48:47,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:48:47,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 01:48:47,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889906182] [2023-12-21 01:48:47,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:48:47,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 01:48:47,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:48:47,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 01:48:47,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:48:47,706 INFO L87 Difference]: Start difference. First operand 289 states and 390 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, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-21 01:48:47,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:48:47,790 INFO L93 Difference]: Finished difference Result 674 states and 908 transitions. [2023-12-21 01:48:47,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 01:48:47,790 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, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 143 [2023-12-21 01:48:47,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:48:47,794 INFO L225 Difference]: With dead ends: 674 [2023-12-21 01:48:47,794 INFO L226 Difference]: Without dead ends: 386 [2023-12-21 01:48:47,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:48:47,795 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 108 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 01:48:47,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 555 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 01:48:47,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2023-12-21 01:48:47,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 295. [2023-12-21 01:48:47,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 240 states have (on average 1.2625) internal successors, (303), 242 states have internal predecessors, (303), 47 states have call successors, (47), 7 states have call predecessors, (47), 7 states have return successors, (47), 45 states have call predecessors, (47), 47 states have call successors, (47) [2023-12-21 01:48:47,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 397 transitions. [2023-12-21 01:48:47,826 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 397 transitions. Word has length 143 [2023-12-21 01:48:47,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:48:47,827 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 397 transitions. [2023-12-21 01:48:47,827 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, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-21 01:48:47,827 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 397 transitions. [2023-12-21 01:48:47,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-21 01:48:47,828 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:48:47,828 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:48:47,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 01:48:47,828 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:48:47,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:48:47,828 INFO L85 PathProgramCache]: Analyzing trace with hash 26861387, now seen corresponding path program 1 times [2023-12-21 01:48:47,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:48:47,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878970875] [2023-12-21 01:48:47,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:48:47,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:48:47,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:47,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:48:47,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:47,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:48:47,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:47,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:48:47,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:47,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:48:47,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:47,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:48:47,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:47,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:48:47,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:47,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:48:47,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:47,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:48:47,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:47,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:48:47,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:47,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:48:47,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:47,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:48:47,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:47,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:48:47,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:47,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:48:47,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:47,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:48:47,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:47,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:48:47,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:47,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:48:47,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:47,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:48:47,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:47,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:48:47,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:47,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:48:47,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:47,991 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-21 01:48:47,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:48:47,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878970875] [2023-12-21 01:48:47,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878970875] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:48:47,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:48:47,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 01:48:47,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584534748] [2023-12-21 01:48:47,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:48:47,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 01:48:47,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:48:47,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 01:48:47,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:48:47,992 INFO L87 Difference]: Start difference. First operand 295 states and 397 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, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-21 01:48:48,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:48:48,072 INFO L93 Difference]: Finished difference Result 633 states and 849 transitions. [2023-12-21 01:48:48,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 01:48:48,072 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, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 143 [2023-12-21 01:48:48,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:48:48,073 INFO L225 Difference]: With dead ends: 633 [2023-12-21 01:48:48,073 INFO L226 Difference]: Without dead ends: 339 [2023-12-21 01:48:48,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:48:48,075 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 103 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 01:48:48,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 541 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 01:48:48,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2023-12-21 01:48:48,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 295. [2023-12-21 01:48:48,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 240 states have (on average 1.2583333333333333) internal successors, (302), 242 states have internal predecessors, (302), 47 states have call successors, (47), 7 states have call predecessors, (47), 7 states have return successors, (47), 45 states have call predecessors, (47), 47 states have call successors, (47) [2023-12-21 01:48:48,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 396 transitions. [2023-12-21 01:48:48,105 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 396 transitions. Word has length 143 [2023-12-21 01:48:48,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:48:48,106 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 396 transitions. [2023-12-21 01:48:48,106 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, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-21 01:48:48,106 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 396 transitions. [2023-12-21 01:48:48,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-21 01:48:48,107 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:48:48,107 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:48:48,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 01:48:48,107 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:48:48,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:48:48,107 INFO L85 PathProgramCache]: Analyzing trace with hash -994206967, now seen corresponding path program 1 times [2023-12-21 01:48:48,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:48:48,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362799688] [2023-12-21 01:48:48,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:48:48,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:48:48,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:48,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:48:48,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:48,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:48:48,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:48,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:48:48,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:48,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:48:48,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:48,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:48:48,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:48,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:48:48,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:48,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:48:48,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:48,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:48:48,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:48,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:48:48,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:48,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:48:48,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:48,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:48:48,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:48,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:48:48,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:48,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:48:48,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:48,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:48:48,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:48,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:48:48,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:48,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:48:48,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:48,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:48:48,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:48,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:48:48,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:48,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:48:48,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:48,261 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-21 01:48:48,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:48:48,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362799688] [2023-12-21 01:48:48,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362799688] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:48:48,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:48:48,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 01:48:48,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115369354] [2023-12-21 01:48:48,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:48:48,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 01:48:48,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:48:48,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 01:48:48,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:48:48,263 INFO L87 Difference]: Start difference. First operand 295 states and 396 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, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-21 01:48:48,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:48:48,352 INFO L93 Difference]: Finished difference Result 615 states and 822 transitions. [2023-12-21 01:48:48,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 01:48:48,352 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, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 143 [2023-12-21 01:48:48,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:48:48,354 INFO L225 Difference]: With dead ends: 615 [2023-12-21 01:48:48,354 INFO L226 Difference]: Without dead ends: 321 [2023-12-21 01:48:48,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:48:48,355 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 68 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 01:48:48,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 586 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 01:48:48,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2023-12-21 01:48:48,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 318. [2023-12-21 01:48:48,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 260 states have (on average 1.2538461538461538) internal successors, (326), 263 states have internal predecessors, (326), 49 states have call successors, (49), 8 states have call predecessors, (49), 8 states have return successors, (49), 46 states have call predecessors, (49), 49 states have call successors, (49) [2023-12-21 01:48:48,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 424 transitions. [2023-12-21 01:48:48,389 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 424 transitions. Word has length 143 [2023-12-21 01:48:48,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:48:48,389 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 424 transitions. [2023-12-21 01:48:48,389 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, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-21 01:48:48,390 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 424 transitions. [2023-12-21 01:48:48,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-21 01:48:48,390 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:48:48,391 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:48:48,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 01:48:48,391 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:48:48,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:48:48,392 INFO L85 PathProgramCache]: Analyzing trace with hash -2022836849, now seen corresponding path program 1 times [2023-12-21 01:48:48,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:48:48,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092120407] [2023-12-21 01:48:48,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:48:48,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:48:48,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:49,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:48:49,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:49,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:48:49,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:49,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:48:49,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:49,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:48:49,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:49,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:48:49,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:49,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:48:49,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:49,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:48:49,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:49,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:48:49,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:49,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:48:49,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:49,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:48:49,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:49,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:48:49,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:49,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:48:49,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:49,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:48:49,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:49,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:48:49,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:49,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:48:49,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:49,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:48:49,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:49,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:48:49,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:49,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:48:49,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:49,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:48:49,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:49,176 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-21 01:48:49,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:48:49,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092120407] [2023-12-21 01:48:49,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092120407] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:48:49,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:48:49,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 01:48:49,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377864635] [2023-12-21 01:48:49,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:48:49,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 01:48:49,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:48:49,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 01:48:49,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 01:48:49,177 INFO L87 Difference]: Start difference. First operand 318 states and 424 transitions. Second operand has 9 states, 7 states have (on average 7.428571428571429) internal successors, (52), 9 states have internal predecessors, (52), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-21 01:48:49,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:48:49,646 INFO L93 Difference]: Finished difference Result 922 states and 1235 transitions. [2023-12-21 01:48:49,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 01:48:49,647 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 7.428571428571429) internal successors, (52), 9 states have internal predecessors, (52), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) Word has length 144 [2023-12-21 01:48:49,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:48:49,649 INFO L225 Difference]: With dead ends: 922 [2023-12-21 01:48:49,649 INFO L226 Difference]: Without dead ends: 605 [2023-12-21 01:48:49,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-12-21 01:48:49,651 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 168 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 969 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 01:48:49,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 969 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 01:48:49,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2023-12-21 01:48:49,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 566. [2023-12-21 01:48:49,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 456 states have (on average 1.2456140350877194) internal successors, (568), 462 states have internal predecessors, (568), 94 states have call successors, (94), 15 states have call predecessors, (94), 15 states have return successors, (94), 88 states have call predecessors, (94), 94 states have call successors, (94) [2023-12-21 01:48:49,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 756 transitions. [2023-12-21 01:48:49,712 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 756 transitions. Word has length 144 [2023-12-21 01:48:49,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:48:49,712 INFO L495 AbstractCegarLoop]: Abstraction has 566 states and 756 transitions. [2023-12-21 01:48:49,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 7.428571428571429) internal successors, (52), 9 states have internal predecessors, (52), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-21 01:48:49,712 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 756 transitions. [2023-12-21 01:48:49,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-21 01:48:49,713 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:48:49,713 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:48:49,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 01:48:49,714 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:48:49,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:48:49,714 INFO L85 PathProgramCache]: Analyzing trace with hash -479832057, now seen corresponding path program 1 times [2023-12-21 01:48:49,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:48:49,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927455819] [2023-12-21 01:48:49,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:48:49,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:48:49,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:50,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:48:50,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:50,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:48:50,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:50,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:48:50,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:50,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:48:50,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:50,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:48:50,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:50,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:48:50,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:50,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:48:50,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:50,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:48:50,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:50,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:48:50,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:50,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:48:50,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:50,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:48:50,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:50,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:48:50,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:50,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:48:50,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:50,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:48:50,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:50,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:48:50,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:50,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:48:50,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:50,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:48:50,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:50,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:48:50,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:50,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:48:50,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:50,588 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-21 01:48:50,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:48:50,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927455819] [2023-12-21 01:48:50,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927455819] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:48:50,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:48:50,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-21 01:48:50,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789263372] [2023-12-21 01:48:50,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:48:50,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 01:48:50,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:48:50,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 01:48:50,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-12-21 01:48:50,590 INFO L87 Difference]: Start difference. First operand 566 states and 756 transitions. Second operand has 13 states, 11 states have (on average 4.818181818181818) internal successors, (53), 13 states have internal predecessors, (53), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-21 01:48:51,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:48:51,413 INFO L93 Difference]: Finished difference Result 1676 states and 2231 transitions. [2023-12-21 01:48:51,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 01:48:51,413 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 4.818181818181818) internal successors, (53), 13 states have internal predecessors, (53), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) Word has length 145 [2023-12-21 01:48:51,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:48:51,416 INFO L225 Difference]: With dead ends: 1676 [2023-12-21 01:48:51,416 INFO L226 Difference]: Without dead ends: 1111 [2023-12-21 01:48:51,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2023-12-21 01:48:51,418 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 435 mSDsluCounter, 931 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 1075 SdHoareTripleChecker+Invalid, 974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 01:48:51,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 1075 Invalid, 974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 01:48:51,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1111 states. [2023-12-21 01:48:51,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1111 to 589. [2023-12-21 01:48:51,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 479 states have (on average 1.2505219206680585) internal successors, (599), 485 states have internal predecessors, (599), 94 states have call successors, (94), 15 states have call predecessors, (94), 15 states have return successors, (94), 88 states have call predecessors, (94), 94 states have call successors, (94) [2023-12-21 01:48:51,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 787 transitions. [2023-12-21 01:48:51,485 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 787 transitions. Word has length 145 [2023-12-21 01:48:51,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:48:51,485 INFO L495 AbstractCegarLoop]: Abstraction has 589 states and 787 transitions. [2023-12-21 01:48:51,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 4.818181818181818) internal successors, (53), 13 states have internal predecessors, (53), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-21 01:48:51,485 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 787 transitions. [2023-12-21 01:48:51,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-21 01:48:51,486 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:48:51,486 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:48:51,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 01:48:51,486 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:48:51,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:48:51,486 INFO L85 PathProgramCache]: Analyzing trace with hash -2068179959, now seen corresponding path program 1 times [2023-12-21 01:48:51,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:48:51,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002649070] [2023-12-21 01:48:51,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:48:51,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:48:51,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:51,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:48:51,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:51,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:48:51,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:51,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:48:51,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:51,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:48:51,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:51,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:48:51,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:51,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:48:51,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:51,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:48:51,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:51,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:48:51,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:51,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:48:51,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:51,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:48:51,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:51,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:48:51,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:51,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:48:51,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:51,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:48:51,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:51,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:48:51,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:51,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:48:51,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:51,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:48:51,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:51,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:48:51,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:51,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:48:51,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:51,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:48:51,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:51,693 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-21 01:48:51,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:48:51,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002649070] [2023-12-21 01:48:51,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002649070] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:48:51,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:48:51,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 01:48:51,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051385377] [2023-12-21 01:48:51,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:48:51,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 01:48:51,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:48:51,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 01:48:51,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:48:51,695 INFO L87 Difference]: Start difference. First operand 589 states and 787 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, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-21 01:48:52,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:48:52,194 INFO L93 Difference]: Finished difference Result 1694 states and 2257 transitions. [2023-12-21 01:48:52,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 01:48:52,194 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, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 145 [2023-12-21 01:48:52,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:48:52,197 INFO L225 Difference]: With dead ends: 1694 [2023-12-21 01:48:52,197 INFO L226 Difference]: Without dead ends: 1106 [2023-12-21 01:48:52,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-21 01:48:52,198 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 200 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 01:48:52,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 556 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 01:48:52,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2023-12-21 01:48:52,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 861. [2023-12-21 01:48:52,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 687 states have (on average 1.232896652110626) internal successors, (847), 697 states have internal predecessors, (847), 150 states have call successors, (150), 23 states have call predecessors, (150), 23 states have return successors, (150), 140 states have call predecessors, (150), 150 states have call successors, (150) [2023-12-21 01:48:52,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1147 transitions. [2023-12-21 01:48:52,304 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1147 transitions. Word has length 145 [2023-12-21 01:48:52,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:48:52,305 INFO L495 AbstractCegarLoop]: Abstraction has 861 states and 1147 transitions. [2023-12-21 01:48:52,305 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, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-21 01:48:52,305 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1147 transitions. [2023-12-21 01:48:52,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-21 01:48:52,306 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:48:52,306 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:48:52,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 01:48:52,307 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:48:52,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:48:52,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1215670087, now seen corresponding path program 1 times [2023-12-21 01:48:52,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:48:52,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026578808] [2023-12-21 01:48:52,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:48:52,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:48:52,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:52,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:48:52,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:52,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:48:52,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:52,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:48:52,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:52,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:48:52,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:52,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:48:52,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:52,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:48:52,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:52,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:48:52,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:52,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:48:52,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:52,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:48:52,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:52,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:48:52,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:52,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:48:52,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:52,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:48:52,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:52,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:48:52,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:52,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:48:52,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:52,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:48:52,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:52,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:48:52,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:52,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:48:52,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:52,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:48:52,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:52,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:48:52,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:48:52,705 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-21 01:48:52,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:48:52,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026578808] [2023-12-21 01:48:52,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026578808] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:48:52,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:48:52,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 01:48:52,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883723873] [2023-12-21 01:48:52,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:48:52,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 01:48:52,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:48:52,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 01:48:52,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-21 01:48:52,707 INFO L87 Difference]: Start difference. First operand 861 states and 1147 transitions. Second operand has 8 states, 6 states have (on average 8.833333333333334) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-21 01:48:53,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:48:53,217 INFO L93 Difference]: Finished difference Result 2075 states and 2768 transitions. [2023-12-21 01:48:53,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 01:48:53,217 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 8.833333333333334) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) Word has length 145 [2023-12-21 01:48:53,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:48:53,221 INFO L225 Difference]: With dead ends: 2075 [2023-12-21 01:48:53,221 INFO L226 Difference]: Without dead ends: 1215 [2023-12-21 01:48:53,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-21 01:48:53,223 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 176 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 01:48:53,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 904 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 01:48:53,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2023-12-21 01:48:53,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 904. [2023-12-21 01:48:53,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 730 states have (on average 1.2438356164383562) internal successors, (908), 740 states have internal predecessors, (908), 150 states have call successors, (150), 23 states have call predecessors, (150), 23 states have return successors, (150), 140 states have call predecessors, (150), 150 states have call successors, (150) [2023-12-21 01:48:53,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1208 transitions. [2023-12-21 01:48:53,335 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1208 transitions. Word has length 145 [2023-12-21 01:48:53,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:48:53,335 INFO L495 AbstractCegarLoop]: Abstraction has 904 states and 1208 transitions. [2023-12-21 01:48:53,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 8.833333333333334) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-21 01:48:53,335 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1208 transitions. [2023-12-21 01:48:53,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-21 01:48:53,336 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:48:53,337 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:48:53,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 01:48:53,337 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:48:53,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:48:53,337 INFO L85 PathProgramCache]: Analyzing trace with hash -57130231, now seen corresponding path program 1 times [2023-12-21 01:48:53,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:48:53,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541815959] [2023-12-21 01:48:53,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:48:53,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:48:53,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:16,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:49:16,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:16,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:49:16,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:16,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:49:16,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:16,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:49:16,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:16,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:49:16,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:16,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:49:16,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:16,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:49:16,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:16,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:49:16,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:16,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:49:16,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:16,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:49:16,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:16,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:49:16,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:16,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:49:16,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:16,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:49:16,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:16,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:49:16,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:16,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:49:16,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:16,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:49:16,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:16,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:49:16,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:16,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:49:16,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:16,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:49:16,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:16,292 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-21 01:49:16,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:49:16,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541815959] [2023-12-21 01:49:16,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541815959] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:49:16,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:49:16,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-12-21 01:49:16,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121964218] [2023-12-21 01:49:16,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:49:16,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-21 01:49:16,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:49:16,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-21 01:49:16,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=178, Unknown=3, NotChecked=0, Total=210 [2023-12-21 01:49:16,294 INFO L87 Difference]: Start difference. First operand 904 states and 1208 transitions. Second operand has 15 states, 12 states have (on average 4.416666666666667) internal successors, (53), 15 states have internal predecessors, (53), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 4 states have call successors, (19) [2023-12-21 01:49:34,037 WARN L293 SmtUtils]: Spent 8.55s on a formula simplification. DAG size of input: 86 DAG size of output: 82 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 01:49:52,151 WARN L293 SmtUtils]: Spent 8.38s on a formula simplification. DAG size of input: 79 DAG size of output: 54 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 01:49:53,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:49:53,816 INFO L93 Difference]: Finished difference Result 2118 states and 2821 transitions. [2023-12-21 01:49:53,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 01:49:53,816 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 4.416666666666667) internal successors, (53), 15 states have internal predecessors, (53), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 4 states have call successors, (19) Word has length 145 [2023-12-21 01:49:53,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:49:53,820 INFO L225 Difference]: With dead ends: 2118 [2023-12-21 01:49:53,820 INFO L226 Difference]: Without dead ends: 1215 [2023-12-21 01:49:53,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 51.0s TimeCoverageRelationStatistics Valid=75, Invalid=383, Unknown=4, NotChecked=0, Total=462 [2023-12-21 01:49:53,822 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 272 mSDsluCounter, 977 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 1121 SdHoareTripleChecker+Invalid, 1095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-21 01:49:53,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 1121 Invalid, 1095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-21 01:49:53,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2023-12-21 01:49:53,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 890. [2023-12-21 01:49:53,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 890 states, 716 states have (on average 1.2402234636871508) internal successors, (888), 726 states have internal predecessors, (888), 150 states have call successors, (150), 23 states have call predecessors, (150), 23 states have return successors, (150), 140 states have call predecessors, (150), 150 states have call successors, (150) [2023-12-21 01:49:53,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1188 transitions. [2023-12-21 01:49:53,951 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1188 transitions. Word has length 145 [2023-12-21 01:49:53,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:49:53,952 INFO L495 AbstractCegarLoop]: Abstraction has 890 states and 1188 transitions. [2023-12-21 01:49:53,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 4.416666666666667) internal successors, (53), 15 states have internal predecessors, (53), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 4 states have call successors, (19) [2023-12-21 01:49:53,952 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1188 transitions. [2023-12-21 01:49:53,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-21 01:49:53,953 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:49:53,953 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:49:53,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-21 01:49:53,953 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:49:53,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:49:53,954 INFO L85 PathProgramCache]: Analyzing trace with hash -657824557, now seen corresponding path program 1 times [2023-12-21 01:49:53,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:49:53,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629129978] [2023-12-21 01:49:53,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:49:53,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:49:53,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:54,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:49:54,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:54,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:49:54,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:54,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:49:54,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:54,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:49:54,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:54,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:49:54,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:54,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:49:54,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:54,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:49:54,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:54,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:49:54,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:54,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:49:54,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:54,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:49:54,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:54,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:49:54,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:54,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:49:54,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:54,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:49:54,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:54,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:49:54,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:54,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:49:54,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:54,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:49:54,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:54,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:49:54,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:54,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:49:54,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:54,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:49:54,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:54,255 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-21 01:49:54,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:49:54,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629129978] [2023-12-21 01:49:54,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629129978] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:49:54,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:49:54,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 01:49:54,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640101957] [2023-12-21 01:49:54,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:49:54,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 01:49:54,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:49:54,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 01:49:54,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:49:54,256 INFO L87 Difference]: Start difference. First operand 890 states and 1188 transitions. Second operand has 7 states, 5 states have (on average 10.6) internal successors, (53), 7 states have internal predecessors, (53), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-21 01:49:54,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:49:54,691 INFO L93 Difference]: Finished difference Result 2035 states and 2712 transitions. [2023-12-21 01:49:54,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 01:49:54,691 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 10.6) internal successors, (53), 7 states have internal predecessors, (53), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) Word has length 145 [2023-12-21 01:49:54,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:49:54,695 INFO L225 Difference]: With dead ends: 2035 [2023-12-21 01:49:54,695 INFO L226 Difference]: Without dead ends: 1146 [2023-12-21 01:49:54,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-21 01:49:54,697 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 116 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 01:49:54,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 663 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 01:49:54,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2023-12-21 01:49:54,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 890. [2023-12-21 01:49:54,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 890 states, 716 states have (on average 1.238826815642458) internal successors, (887), 726 states have internal predecessors, (887), 150 states have call successors, (150), 23 states have call predecessors, (150), 23 states have return successors, (150), 140 states have call predecessors, (150), 150 states have call successors, (150) [2023-12-21 01:49:54,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1187 transitions. [2023-12-21 01:49:54,817 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1187 transitions. Word has length 145 [2023-12-21 01:49:54,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:49:54,818 INFO L495 AbstractCegarLoop]: Abstraction has 890 states and 1187 transitions. [2023-12-21 01:49:54,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 10.6) internal successors, (53), 7 states have internal predecessors, (53), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-21 01:49:54,818 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1187 transitions. [2023-12-21 01:49:54,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-21 01:49:54,819 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:49:54,819 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:49:54,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-21 01:49:54,819 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:49:54,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:49:54,819 INFO L85 PathProgramCache]: Analyzing trace with hash -798373167, now seen corresponding path program 1 times [2023-12-21 01:49:54,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:49:54,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449099550] [2023-12-21 01:49:54,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:49:54,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:49:54,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:55,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:49:55,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:55,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:49:55,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:55,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:49:55,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:55,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:49:55,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:55,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:49:55,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:55,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:49:55,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:55,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:49:55,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:55,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:49:55,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:55,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:49:55,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:55,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:49:55,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:55,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:49:55,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:55,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:49:55,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:55,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:49:55,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:55,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:49:55,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:55,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:49:55,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:55,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:49:55,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:55,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:49:55,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:55,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:49:55,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:55,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:49:55,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:55,560 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-21 01:49:55,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:49:55,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449099550] [2023-12-21 01:49:55,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449099550] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:49:55,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:49:55,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-21 01:49:55,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109294976] [2023-12-21 01:49:55,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:49:55,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 01:49:55,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:49:55,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 01:49:55,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-12-21 01:49:55,562 INFO L87 Difference]: Start difference. First operand 890 states and 1187 transitions. Second operand has 13 states, 10 states have (on average 5.3) internal successors, (53), 13 states have internal predecessors, (53), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 4 states have call successors, (19) [2023-12-21 01:49:56,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:49:56,610 INFO L93 Difference]: Finished difference Result 2231 states and 2969 transitions. [2023-12-21 01:49:56,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 01:49:56,624 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 5.3) internal successors, (53), 13 states have internal predecessors, (53), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 4 states have call successors, (19) Word has length 145 [2023-12-21 01:49:56,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:49:56,628 INFO L225 Difference]: With dead ends: 2231 [2023-12-21 01:49:56,628 INFO L226 Difference]: Without dead ends: 1342 [2023-12-21 01:49:56,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2023-12-21 01:49:56,630 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 268 mSDsluCounter, 1479 mSDsCounter, 0 mSdLazyCounter, 1161 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 1695 SdHoareTripleChecker+Invalid, 1165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 01:49:56,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 1695 Invalid, 1165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1161 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 01:49:56,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1342 states. [2023-12-21 01:49:56,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1342 to 890. [2023-12-21 01:49:56,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 890 states, 716 states have (on average 1.2360335195530727) internal successors, (885), 726 states have internal predecessors, (885), 150 states have call successors, (150), 23 states have call predecessors, (150), 23 states have return successors, (150), 140 states have call predecessors, (150), 150 states have call successors, (150) [2023-12-21 01:49:56,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1185 transitions. [2023-12-21 01:49:56,736 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1185 transitions. Word has length 145 [2023-12-21 01:49:56,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:49:56,736 INFO L495 AbstractCegarLoop]: Abstraction has 890 states and 1185 transitions. [2023-12-21 01:49:56,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 5.3) internal successors, (53), 13 states have internal predecessors, (53), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 4 states have call successors, (19) [2023-12-21 01:49:56,736 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1185 transitions. [2023-12-21 01:49:56,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-21 01:49:56,738 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:49:56,738 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:49:56,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-21 01:49:56,738 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:49:56,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:49:56,738 INFO L85 PathProgramCache]: Analyzing trace with hash -989305147, now seen corresponding path program 1 times [2023-12-21 01:49:56,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:49:56,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752414153] [2023-12-21 01:49:56,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:49:56,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:49:56,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:57,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:49:57,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:57,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:49:57,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:57,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:49:57,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:57,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:49:57,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:57,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:49:57,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:57,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:49:57,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:57,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:49:57,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:57,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:49:57,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:57,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:49:57,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:57,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:49:57,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:57,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:49:57,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:57,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:49:57,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:57,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:49:57,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:57,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:49:57,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:57,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:49:57,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:57,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:49:57,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:57,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:49:57,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:57,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:49:57,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:57,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:49:57,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:57,282 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-21 01:49:57,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:49:57,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752414153] [2023-12-21 01:49:57,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752414153] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:49:57,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:49:57,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 01:49:57,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559455944] [2023-12-21 01:49:57,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:49:57,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 01:49:57,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:49:57,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 01:49:57,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 01:49:57,284 INFO L87 Difference]: Start difference. First operand 890 states and 1185 transitions. Second operand has 9 states, 7 states have (on average 7.571428571428571) internal successors, (53), 9 states have internal predecessors, (53), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-21 01:49:57,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:49:57,899 INFO L93 Difference]: Finished difference Result 1795 states and 2378 transitions. [2023-12-21 01:49:57,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 01:49:57,899 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 7.571428571428571) internal successors, (53), 9 states have internal predecessors, (53), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) Word has length 145 [2023-12-21 01:49:57,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:49:57,902 INFO L225 Difference]: With dead ends: 1795 [2023-12-21 01:49:57,902 INFO L226 Difference]: Without dead ends: 906 [2023-12-21 01:49:57,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-21 01:49:57,904 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 140 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 01:49:57,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 672 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 01:49:57,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2023-12-21 01:49:58,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 763. [2023-12-21 01:49:58,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 763 states, 617 states have (on average 1.2252836304700163) internal successors, (756), 625 states have internal predecessors, (756), 124 states have call successors, (124), 21 states have call predecessors, (124), 21 states have return successors, (124), 116 states have call predecessors, (124), 124 states have call successors, (124) [2023-12-21 01:49:58,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 1004 transitions. [2023-12-21 01:49:58,035 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 1004 transitions. Word has length 145 [2023-12-21 01:49:58,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:49:58,035 INFO L495 AbstractCegarLoop]: Abstraction has 763 states and 1004 transitions. [2023-12-21 01:49:58,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 7.571428571428571) internal successors, (53), 9 states have internal predecessors, (53), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-21 01:49:58,036 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 1004 transitions. [2023-12-21 01:49:58,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-21 01:49:58,037 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:49:58,037 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:49:58,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-21 01:49:58,037 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:49:58,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:49:58,037 INFO L85 PathProgramCache]: Analyzing trace with hash 706196997, now seen corresponding path program 1 times [2023-12-21 01:49:58,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:49:58,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214577103] [2023-12-21 01:49:58,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:49:58,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:49:58,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:58,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:49:58,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:58,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:49:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:58,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:49:58,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:58,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:49:58,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:58,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:49:58,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:58,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:49:58,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:58,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:49:58,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:58,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:49:58,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:58,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:49:58,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:58,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:49:58,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:58,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:49:58,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:58,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:49:58,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:58,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:49:58,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:58,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:49:58,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:58,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:49:58,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:58,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:49:58,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:58,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:49:58,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:58,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:49:58,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:58,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:49:58,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:58,350 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-21 01:49:58,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:49:58,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214577103] [2023-12-21 01:49:58,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214577103] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:49:58,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:49:58,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 01:49:58,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739306518] [2023-12-21 01:49:58,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:49:58,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 01:49:58,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:49:58,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 01:49:58,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-21 01:49:58,352 INFO L87 Difference]: Start difference. First operand 763 states and 1004 transitions. Second operand has 9 states, 8 states have (on average 6.625) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-21 01:49:58,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:49:58,865 INFO L93 Difference]: Finished difference Result 1649 states and 2169 transitions. [2023-12-21 01:49:58,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 01:49:58,865 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) Word has length 145 [2023-12-21 01:49:58,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:49:58,868 INFO L225 Difference]: With dead ends: 1649 [2023-12-21 01:49:58,868 INFO L226 Difference]: Without dead ends: 887 [2023-12-21 01:49:58,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-12-21 01:49:58,871 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 140 mSDsluCounter, 922 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 1142 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 01:49:58,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 1142 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 01:49:58,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2023-12-21 01:49:58,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 753. [2023-12-21 01:49:58,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 607 states have (on average 1.2224052718286655) internal successors, (742), 615 states have internal predecessors, (742), 124 states have call successors, (124), 21 states have call predecessors, (124), 21 states have return successors, (124), 116 states have call predecessors, (124), 124 states have call successors, (124) [2023-12-21 01:49:59,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 990 transitions. [2023-12-21 01:49:59,000 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 990 transitions. Word has length 145 [2023-12-21 01:49:59,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:49:59,000 INFO L495 AbstractCegarLoop]: Abstraction has 753 states and 990 transitions. [2023-12-21 01:49:59,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-21 01:49:59,000 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 990 transitions. [2023-12-21 01:49:59,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-21 01:49:59,001 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:49:59,001 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:49:59,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-21 01:49:59,002 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:49:59,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:49:59,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1847805971, now seen corresponding path program 1 times [2023-12-21 01:49:59,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:49:59,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394531814] [2023-12-21 01:49:59,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:49:59,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:49:59,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:59,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:49:59,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:59,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:49:59,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:59,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:49:59,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:59,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:49:59,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:59,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:49:59,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:59,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:49:59,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:59,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:49:59,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:59,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:49:59,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:59,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:49:59,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:59,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:49:59,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:59,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:49:59,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:59,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:49:59,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:59,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:49:59,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:59,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:49:59,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:59,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:49:59,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:59,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:49:59,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:59,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:49:59,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:59,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:49:59,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:59,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:49:59,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:49:59,292 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-21 01:49:59,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:49:59,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394531814] [2023-12-21 01:49:59,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394531814] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:49:59,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:49:59,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 01:49:59,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005356025] [2023-12-21 01:49:59,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:49:59,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 01:49:59,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:49:59,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 01:49:59,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 01:49:59,295 INFO L87 Difference]: Start difference. First operand 753 states and 990 transitions. Second operand has 9 states, 8 states have (on average 6.625) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-21 01:49:59,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:49:59,806 INFO L93 Difference]: Finished difference Result 1594 states and 2090 transitions. [2023-12-21 01:49:59,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 01:49:59,807 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) Word has length 145 [2023-12-21 01:49:59,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:49:59,809 INFO L225 Difference]: With dead ends: 1594 [2023-12-21 01:49:59,809 INFO L226 Difference]: Without dead ends: 842 [2023-12-21 01:49:59,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-12-21 01:49:59,811 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 155 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 01:49:59,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 1014 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 01:49:59,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2023-12-21 01:49:59,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 497. [2023-12-21 01:49:59,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 415 states have (on average 1.23855421686747) internal successors, (514), 419 states have internal predecessors, (514), 68 states have call successors, (68), 13 states have call predecessors, (68), 13 states have return successors, (68), 64 states have call predecessors, (68), 68 states have call successors, (68) [2023-12-21 01:49:59,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 650 transitions. [2023-12-21 01:49:59,891 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 650 transitions. Word has length 145 [2023-12-21 01:49:59,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:49:59,891 INFO L495 AbstractCegarLoop]: Abstraction has 497 states and 650 transitions. [2023-12-21 01:49:59,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-21 01:49:59,891 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 650 transitions. [2023-12-21 01:49:59,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-21 01:49:59,892 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:49:59,892 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:49:59,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-21 01:49:59,892 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:49:59,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:49:59,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1038927602, now seen corresponding path program 1 times [2023-12-21 01:49:59,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:49:59,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398738233] [2023-12-21 01:49:59,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:49:59,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:49:59,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:00,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:50:00,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:00,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:50:00,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:00,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:50:00,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:00,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:50:00,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:00,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:50:00,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:00,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:50:00,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:00,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:50:00,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:00,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:50:00,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:00,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:50:00,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:00,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:50:00,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:00,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:50:00,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:00,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:50:00,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:00,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:50:00,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:00,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:50:00,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:00,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:50:00,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:00,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:50:00,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:00,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:50:00,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:00,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:50:00,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:00,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:50:00,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:00,223 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-21 01:50:00,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:50:00,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398738233] [2023-12-21 01:50:00,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398738233] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:50:00,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:50:00,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 01:50:00,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111846753] [2023-12-21 01:50:00,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:50:00,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 01:50:00,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:50:00,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 01:50:00,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 01:50:00,224 INFO L87 Difference]: Start difference. First operand 497 states and 650 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, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-21 01:50:00,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:50:00,749 INFO L93 Difference]: Finished difference Result 1058 states and 1386 transitions. [2023-12-21 01:50:00,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 01:50:00,749 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, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 145 [2023-12-21 01:50:00,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:50:00,751 INFO L225 Difference]: With dead ends: 1058 [2023-12-21 01:50:00,751 INFO L226 Difference]: Without dead ends: 562 [2023-12-21 01:50:00,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2023-12-21 01:50:00,752 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 184 mSDsluCounter, 1097 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 01:50:00,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 1296 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 01:50:00,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2023-12-21 01:50:00,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 501. [2023-12-21 01:50:00,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 419 states have (on average 1.233890214797136) internal successors, (517), 423 states have internal predecessors, (517), 68 states have call successors, (68), 13 states have call predecessors, (68), 13 states have return successors, (68), 64 states have call predecessors, (68), 68 states have call successors, (68) [2023-12-21 01:50:00,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 653 transitions. [2023-12-21 01:50:00,833 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 653 transitions. Word has length 145 [2023-12-21 01:50:00,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:50:00,834 INFO L495 AbstractCegarLoop]: Abstraction has 501 states and 653 transitions. [2023-12-21 01:50:00,834 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, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-21 01:50:00,834 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 653 transitions. [2023-12-21 01:50:00,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-21 01:50:00,834 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:50:00,835 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:50:00,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-21 01:50:00,835 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:50:00,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:50:00,835 INFO L85 PathProgramCache]: Analyzing trace with hash -2093325592, now seen corresponding path program 1 times [2023-12-21 01:50:00,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:50:00,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214763559] [2023-12-21 01:50:00,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:50:00,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:50:00,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:50:01,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:50:01,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:50:01,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:50:01,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:50:01,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:50:01,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:50:01,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:50:01,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:50:01,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:50:01,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:50:01,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:50:01,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:50:01,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:50:01,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:50:01,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:50:01,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:50:01,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:50:01,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:50:01,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,030 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-21 01:50:01,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:50:01,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214763559] [2023-12-21 01:50:01,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214763559] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:50:01,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:50:01,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 01:50:01,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013637620] [2023-12-21 01:50:01,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:50:01,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 01:50:01,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:50:01,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 01:50:01,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-21 01:50:01,032 INFO L87 Difference]: Start difference. First operand 501 states and 653 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-21 01:50:01,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:50:01,232 INFO L93 Difference]: Finished difference Result 1241 states and 1620 transitions. [2023-12-21 01:50:01,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 01:50:01,233 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 146 [2023-12-21 01:50:01,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:50:01,235 INFO L225 Difference]: With dead ends: 1241 [2023-12-21 01:50:01,235 INFO L226 Difference]: Without dead ends: 741 [2023-12-21 01:50:01,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-21 01:50:01,236 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 251 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:50:01,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 815 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 01:50:01,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2023-12-21 01:50:01,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 529. [2023-12-21 01:50:01,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 447 states have (on average 1.2192393736017897) internal successors, (545), 451 states have internal predecessors, (545), 68 states have call successors, (68), 13 states have call predecessors, (68), 13 states have return successors, (68), 64 states have call predecessors, (68), 68 states have call successors, (68) [2023-12-21 01:50:01,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 681 transitions. [2023-12-21 01:50:01,320 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 681 transitions. Word has length 146 [2023-12-21 01:50:01,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:50:01,321 INFO L495 AbstractCegarLoop]: Abstraction has 529 states and 681 transitions. [2023-12-21 01:50:01,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-21 01:50:01,321 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 681 transitions. [2023-12-21 01:50:01,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-21 01:50:01,322 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:50:01,322 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:50:01,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-21 01:50:01,322 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:50:01,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:50:01,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1383993254, now seen corresponding path program 1 times [2023-12-21 01:50:01,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:50:01,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770124032] [2023-12-21 01:50:01,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:50:01,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:50:01,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:50:01,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:50:01,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:50:01,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:50:01,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:50:01,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:50:01,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:50:01,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:50:01,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:50:01,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:50:01,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:50:01,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:50:01,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:50:01,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:50:01,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:50:01,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:50:01,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:50:01,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:50:01,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:50:01,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,468 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-21 01:50:01,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:50:01,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770124032] [2023-12-21 01:50:01,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770124032] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:50:01,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:50:01,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 01:50:01,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014684005] [2023-12-21 01:50:01,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:50:01,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 01:50:01,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:50:01,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 01:50:01,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:50:01,469 INFO L87 Difference]: Start difference. First operand 529 states and 681 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-21 01:50:01,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:50:01,627 INFO L93 Difference]: Finished difference Result 1089 states and 1407 transitions. [2023-12-21 01:50:01,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 01:50:01,627 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 146 [2023-12-21 01:50:01,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:50:01,629 INFO L225 Difference]: With dead ends: 1089 [2023-12-21 01:50:01,629 INFO L226 Difference]: Without dead ends: 561 [2023-12-21 01:50:01,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-21 01:50:01,630 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 119 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:50:01,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 660 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 01:50:01,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2023-12-21 01:50:01,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 505. [2023-12-21 01:50:01,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 423 states have (on average 1.2245862884160756) internal successors, (518), 427 states have internal predecessors, (518), 68 states have call successors, (68), 13 states have call predecessors, (68), 13 states have return successors, (68), 64 states have call predecessors, (68), 68 states have call successors, (68) [2023-12-21 01:50:01,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 654 transitions. [2023-12-21 01:50:01,713 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 654 transitions. Word has length 146 [2023-12-21 01:50:01,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:50:01,713 INFO L495 AbstractCegarLoop]: Abstraction has 505 states and 654 transitions. [2023-12-21 01:50:01,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-21 01:50:01,713 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 654 transitions. [2023-12-21 01:50:01,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-21 01:50:01,714 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:50:01,714 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:50:01,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-21 01:50:01,714 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:50:01,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:50:01,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1064505622, now seen corresponding path program 1 times [2023-12-21 01:50:01,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:50:01,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905802000] [2023-12-21 01:50:01,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:50:01,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:50:01,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:50:01,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:50:01,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:50:01,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:50:01,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:50:01,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:50:01,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:50:01,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:50:01,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:50:01,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:50:01,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:50:01,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:50:01,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:50:01,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:50:01,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:50:01,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:50:01,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:50:01,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:50:01,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:50:01,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:01,877 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-21 01:50:01,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:50:01,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905802000] [2023-12-21 01:50:01,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905802000] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:50:01,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:50:01,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 01:50:01,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243531565] [2023-12-21 01:50:01,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:50:01,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 01:50:01,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:50:01,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 01:50:01,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:50:01,879 INFO L87 Difference]: Start difference. First operand 505 states and 654 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-21 01:50:02,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:50:02,022 INFO L93 Difference]: Finished difference Result 999 states and 1296 transitions. [2023-12-21 01:50:02,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 01:50:02,022 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 146 [2023-12-21 01:50:02,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:50:02,024 INFO L225 Difference]: With dead ends: 999 [2023-12-21 01:50:02,024 INFO L226 Difference]: Without dead ends: 493 [2023-12-21 01:50:02,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-21 01:50:02,025 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 195 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 01:50:02,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 575 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 01:50:02,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2023-12-21 01:50:02,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 491. [2023-12-21 01:50:02,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 409 states have (on average 1.2273838630806846) internal successors, (502), 413 states have internal predecessors, (502), 68 states have call successors, (68), 13 states have call predecessors, (68), 13 states have return successors, (68), 64 states have call predecessors, (68), 68 states have call successors, (68) [2023-12-21 01:50:02,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 638 transitions. [2023-12-21 01:50:02,106 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 638 transitions. Word has length 146 [2023-12-21 01:50:02,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:50:02,106 INFO L495 AbstractCegarLoop]: Abstraction has 491 states and 638 transitions. [2023-12-21 01:50:02,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-21 01:50:02,106 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 638 transitions. [2023-12-21 01:50:02,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-21 01:50:02,107 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:50:02,107 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:50:02,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-21 01:50:02,107 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:50:02,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:50:02,108 INFO L85 PathProgramCache]: Analyzing trace with hash -929639084, now seen corresponding path program 1 times [2023-12-21 01:50:02,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:50:02,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111214034] [2023-12-21 01:50:02,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:50:02,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:50:02,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:02,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:50:02,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:02,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:50:02,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:02,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:50:02,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:02,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:50:02,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:02,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:50:02,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:02,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:50:02,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:02,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:50:02,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:02,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:50:02,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:02,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:50:02,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:02,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:50:02,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:02,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:50:02,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:02,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:50:02,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:02,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:50:02,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:02,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:50:02,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:02,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:50:02,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:02,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:50:02,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:02,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:50:02,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:02,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:50:02,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:02,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:50:02,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:02,275 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-21 01:50:02,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:50:02,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111214034] [2023-12-21 01:50:02,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111214034] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:50:02,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:50:02,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 01:50:02,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579583006] [2023-12-21 01:50:02,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:50:02,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 01:50:02,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:50:02,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 01:50:02,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:50:02,276 INFO L87 Difference]: Start difference. First operand 491 states and 638 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-21 01:50:02,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:50:02,414 INFO L93 Difference]: Finished difference Result 989 states and 1286 transitions. [2023-12-21 01:50:02,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 01:50:02,414 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 146 [2023-12-21 01:50:02,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:50:02,416 INFO L225 Difference]: With dead ends: 989 [2023-12-21 01:50:02,416 INFO L226 Difference]: Without dead ends: 499 [2023-12-21 01:50:02,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-21 01:50:02,418 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 173 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 01:50:02,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 590 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 01:50:02,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2023-12-21 01:50:02,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 485. [2023-12-21 01:50:02,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 403 states have (on average 1.2233250620347396) internal successors, (493), 407 states have internal predecessors, (493), 68 states have call successors, (68), 13 states have call predecessors, (68), 13 states have return successors, (68), 64 states have call predecessors, (68), 68 states have call successors, (68) [2023-12-21 01:50:02,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 629 transitions. [2023-12-21 01:50:02,500 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 629 transitions. Word has length 146 [2023-12-21 01:50:02,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:50:02,500 INFO L495 AbstractCegarLoop]: Abstraction has 485 states and 629 transitions. [2023-12-21 01:50:02,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-21 01:50:02,500 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 629 transitions. [2023-12-21 01:50:02,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-21 01:50:02,501 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:50:02,501 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:50:02,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-21 01:50:02,502 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:50:02,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:50:02,502 INFO L85 PathProgramCache]: Analyzing trace with hash -847228276, now seen corresponding path program 1 times [2023-12-21 01:50:02,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:50:02,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434877528] [2023-12-21 01:50:02,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:50:02,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:50:02,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:03,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:50:03,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:03,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:50:03,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:03,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:50:03,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:03,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:50:03,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:03,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:50:03,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:03,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:50:03,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:03,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:50:03,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:03,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:50:03,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:03,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:50:03,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:03,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:50:03,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:03,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:50:03,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:03,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:50:03,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:03,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:50:03,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:03,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:50:03,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:03,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:50:03,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:03,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:50:03,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:03,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:50:03,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:03,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:50:03,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:03,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:50:03,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:03,036 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-21 01:50:03,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:50:03,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434877528] [2023-12-21 01:50:03,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434877528] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:50:03,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:50:03,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 01:50:03,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48095132] [2023-12-21 01:50:03,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:50:03,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 01:50:03,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:50:03,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 01:50:03,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-12-21 01:50:03,038 INFO L87 Difference]: Start difference. First operand 485 states and 629 transitions. Second operand has 12 states, 11 states have (on average 5.0) internal successors, (55), 12 states have internal predecessors, (55), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-21 01:50:03,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:50:03,737 INFO L93 Difference]: Finished difference Result 1179 states and 1525 transitions. [2023-12-21 01:50:03,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 01:50:03,738 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.0) internal successors, (55), 12 states have internal predecessors, (55), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) Word has length 147 [2023-12-21 01:50:03,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:50:03,741 INFO L225 Difference]: With dead ends: 1179 [2023-12-21 01:50:03,741 INFO L226 Difference]: Without dead ends: 695 [2023-12-21 01:50:03,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2023-12-21 01:50:03,743 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 176 mSDsluCounter, 995 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 01:50:03,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 1147 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 01:50:03,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2023-12-21 01:50:03,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 487. [2023-12-21 01:50:03,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 405 states have (on average 1.2222222222222223) internal successors, (495), 409 states have internal predecessors, (495), 68 states have call successors, (68), 13 states have call predecessors, (68), 13 states have return successors, (68), 64 states have call predecessors, (68), 68 states have call successors, (68) [2023-12-21 01:50:03,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 631 transitions. [2023-12-21 01:50:03,845 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 631 transitions. Word has length 147 [2023-12-21 01:50:03,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:50:03,846 INFO L495 AbstractCegarLoop]: Abstraction has 487 states and 631 transitions. [2023-12-21 01:50:03,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.0) internal successors, (55), 12 states have internal predecessors, (55), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-21 01:50:03,846 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 631 transitions. [2023-12-21 01:50:03,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-21 01:50:03,846 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:50:03,847 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:50:03,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-21 01:50:03,847 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:50:03,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:50:03,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1858345526, now seen corresponding path program 1 times [2023-12-21 01:50:03,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:50:03,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215714989] [2023-12-21 01:50:03,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:50:03,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:50:03,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:04,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:50:04,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:04,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:50:04,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:04,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:50:04,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:04,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:50:04,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:04,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:50:04,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:04,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:50:04,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:04,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:50:04,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:04,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:50:04,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:04,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:50:04,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:04,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:50:04,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:04,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:50:04,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:04,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:50:04,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:04,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:50:04,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:04,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:50:04,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:04,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:50:04,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:04,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:50:04,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:04,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:50:04,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:04,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:50:04,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:04,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:50:04,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:04,118 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-21 01:50:04,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:50:04,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215714989] [2023-12-21 01:50:04,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215714989] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:50:04,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:50:04,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 01:50:04,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599480834] [2023-12-21 01:50:04,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:50:04,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 01:50:04,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:50:04,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 01:50:04,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-21 01:50:04,121 INFO L87 Difference]: Start difference. First operand 487 states and 631 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-21 01:50:04,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:50:04,867 INFO L93 Difference]: Finished difference Result 1626 states and 2082 transitions. [2023-12-21 01:50:04,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 01:50:04,867 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 147 [2023-12-21 01:50:04,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:50:04,870 INFO L225 Difference]: With dead ends: 1626 [2023-12-21 01:50:04,870 INFO L226 Difference]: Without dead ends: 1140 [2023-12-21 01:50:04,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-12-21 01:50:04,871 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 249 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 01:50:04,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 893 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 01:50:04,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2023-12-21 01:50:04,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 586. [2023-12-21 01:50:04,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 501 states have (on average 1.2095808383233533) internal successors, (606), 506 states have internal predecessors, (606), 70 states have call successors, (70), 14 states have call predecessors, (70), 14 states have return successors, (70), 65 states have call predecessors, (70), 70 states have call successors, (70) [2023-12-21 01:50:04,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 746 transitions. [2023-12-21 01:50:04,967 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 746 transitions. Word has length 147 [2023-12-21 01:50:04,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:50:04,967 INFO L495 AbstractCegarLoop]: Abstraction has 586 states and 746 transitions. [2023-12-21 01:50:04,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-21 01:50:04,968 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 746 transitions. [2023-12-21 01:50:04,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-21 01:50:04,968 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:50:04,969 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:50:04,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-12-21 01:50:04,969 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:50:04,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:50:04,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1435643700, now seen corresponding path program 1 times [2023-12-21 01:50:04,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:50:04,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969734608] [2023-12-21 01:50:04,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:50:04,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:50:04,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:05,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:50:05,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:05,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:50:05,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:05,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:50:05,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:05,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:50:05,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:05,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:50:05,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:05,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:50:05,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:05,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:50:05,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:05,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:50:05,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:05,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:50:05,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:05,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:50:05,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:05,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:50:05,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:05,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:50:05,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:05,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:50:05,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:05,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:50:05,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:05,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:50:05,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:05,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:50:05,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:05,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:50:05,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:05,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:50:05,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:05,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:50:05,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:05,252 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-21 01:50:05,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:50:05,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969734608] [2023-12-21 01:50:05,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969734608] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:50:05,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:50:05,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 01:50:05,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270006339] [2023-12-21 01:50:05,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:50:05,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 01:50:05,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:50:05,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 01:50:05,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:50:05,254 INFO L87 Difference]: Start difference. First operand 586 states and 746 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-21 01:50:05,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:50:05,658 INFO L93 Difference]: Finished difference Result 1404 states and 1779 transitions. [2023-12-21 01:50:05,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 01:50:05,658 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 147 [2023-12-21 01:50:05,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:50:05,660 INFO L225 Difference]: With dead ends: 1404 [2023-12-21 01:50:05,660 INFO L226 Difference]: Without dead ends: 819 [2023-12-21 01:50:05,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-21 01:50:05,661 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 165 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 01:50:05,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 728 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 01:50:05,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2023-12-21 01:50:05,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 579. [2023-12-21 01:50:05,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 494 states have (on average 1.2064777327935223) internal successors, (596), 499 states have internal predecessors, (596), 70 states have call successors, (70), 14 states have call predecessors, (70), 14 states have return successors, (70), 65 states have call predecessors, (70), 70 states have call successors, (70) [2023-12-21 01:50:05,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 736 transitions. [2023-12-21 01:50:05,757 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 736 transitions. Word has length 147 [2023-12-21 01:50:05,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:50:05,757 INFO L495 AbstractCegarLoop]: Abstraction has 579 states and 736 transitions. [2023-12-21 01:50:05,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-21 01:50:05,757 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 736 transitions. [2023-12-21 01:50:05,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-21 01:50:05,758 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:50:05,759 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:50:05,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-12-21 01:50:05,759 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:50:05,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:50:05,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1500833140, now seen corresponding path program 1 times [2023-12-21 01:50:05,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:50:05,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942898630] [2023-12-21 01:50:05,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:50:05,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:50:05,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:05,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:50:05,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:05,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:50:05,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:05,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:50:05,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:05,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:50:06,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:06,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:50:06,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:06,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:50:06,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:06,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:50:06,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:06,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:50:06,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:06,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:50:06,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:06,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:50:06,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:06,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:50:06,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:06,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:50:06,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:06,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:50:06,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:06,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:50:06,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:06,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:50:06,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:06,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:50:06,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:06,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:50:06,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:06,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:50:06,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:06,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:50:06,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:06,010 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-21 01:50:06,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:50:06,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942898630] [2023-12-21 01:50:06,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942898630] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:50:06,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:50:06,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 01:50:06,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927025422] [2023-12-21 01:50:06,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:50:06,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 01:50:06,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:50:06,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 01:50:06,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-12-21 01:50:06,011 INFO L87 Difference]: Start difference. First operand 579 states and 736 transitions. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-21 01:50:06,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:50:06,502 INFO L93 Difference]: Finished difference Result 1368 states and 1739 transitions. [2023-12-21 01:50:06,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 01:50:06,502 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 147 [2023-12-21 01:50:06,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:50:06,504 INFO L225 Difference]: With dead ends: 1368 [2023-12-21 01:50:06,504 INFO L226 Difference]: Without dead ends: 790 [2023-12-21 01:50:06,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2023-12-21 01:50:06,505 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 211 mSDsluCounter, 1512 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 1726 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 01:50:06,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 1726 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 01:50:06,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2023-12-21 01:50:06,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 769. [2023-12-21 01:50:06,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 640 states have (on average 1.190625) internal successors, (762), 647 states have internal predecessors, (762), 106 states have call successors, (106), 22 states have call predecessors, (106), 22 states have return successors, (106), 99 states have call predecessors, (106), 106 states have call successors, (106) [2023-12-21 01:50:06,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 974 transitions. [2023-12-21 01:50:06,660 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 974 transitions. Word has length 147 [2023-12-21 01:50:06,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:50:06,660 INFO L495 AbstractCegarLoop]: Abstraction has 769 states and 974 transitions. [2023-12-21 01:50:06,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-21 01:50:06,660 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 974 transitions. [2023-12-21 01:50:06,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-21 01:50:06,661 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:50:06,661 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:50:06,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-21 01:50:06,661 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:50:06,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:50:06,662 INFO L85 PathProgramCache]: Analyzing trace with hash 870906122, now seen corresponding path program 1 times [2023-12-21 01:50:06,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:50:06,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167450144] [2023-12-21 01:50:06,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:50:06,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:50:06,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:06,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:50:06,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:06,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:50:06,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:06,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:50:06,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:06,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:50:06,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:06,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:50:06,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:06,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:50:06,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:06,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:50:06,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:06,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:50:06,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:06,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:50:06,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:06,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:50:06,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:06,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:50:06,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:06,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:50:06,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:06,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:50:06,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:06,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:50:06,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:06,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:50:06,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:06,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:50:06,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:06,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:50:06,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:06,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:50:06,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:06,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:50:06,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:06,942 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-21 01:50:06,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:50:06,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167450144] [2023-12-21 01:50:06,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167450144] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:50:06,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:50:06,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 01:50:06,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291229862] [2023-12-21 01:50:06,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:50:06,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 01:50:06,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:50:06,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 01:50:06,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:50:06,944 INFO L87 Difference]: Start difference. First operand 769 states and 974 transitions. Second operand has 7 states, 5 states have (on average 11.0) internal successors, (55), 7 states have internal predecessors, (55), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-21 01:50:07,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:50:07,479 INFO L93 Difference]: Finished difference Result 1628 states and 2060 transitions. [2023-12-21 01:50:07,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 01:50:07,479 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 11.0) internal successors, (55), 7 states have internal predecessors, (55), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) Word has length 147 [2023-12-21 01:50:07,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:50:07,482 INFO L225 Difference]: With dead ends: 1628 [2023-12-21 01:50:07,482 INFO L226 Difference]: Without dead ends: 860 [2023-12-21 01:50:07,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-21 01:50:07,483 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 108 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 01:50:07,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 508 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 01:50:07,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2023-12-21 01:50:07,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 716. [2023-12-21 01:50:07,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 587 states have (on average 1.1839863713798977) internal successors, (695), 594 states have internal predecessors, (695), 106 states have call successors, (106), 22 states have call predecessors, (106), 22 states have return successors, (106), 99 states have call predecessors, (106), 106 states have call successors, (106) [2023-12-21 01:50:07,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 907 transitions. [2023-12-21 01:50:07,640 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 907 transitions. Word has length 147 [2023-12-21 01:50:07,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:50:07,640 INFO L495 AbstractCegarLoop]: Abstraction has 716 states and 907 transitions. [2023-12-21 01:50:07,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 11.0) internal successors, (55), 7 states have internal predecessors, (55), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-21 01:50:07,640 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 907 transitions. [2023-12-21 01:50:07,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-21 01:50:07,641 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:50:07,641 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:50:07,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-12-21 01:50:07,641 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:50:07,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:50:07,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1965765724, now seen corresponding path program 1 times [2023-12-21 01:50:07,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:50:07,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194922765] [2023-12-21 01:50:07,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:50:07,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:50:07,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:50:08,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:50:08,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:50:08,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:50:08,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:50:08,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:50:08,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:50:08,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:50:08,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:50:08,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:50:08,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:50:08,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:50:08,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:50:08,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:50:08,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:50:08,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:50:08,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:50:08,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:50:08,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:50:08,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,238 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-21 01:50:08,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:50:08,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194922765] [2023-12-21 01:50:08,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194922765] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:50:08,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:50:08,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 01:50:08,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205468076] [2023-12-21 01:50:08,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:50:08,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 01:50:08,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:50:08,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 01:50:08,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:50:08,240 INFO L87 Difference]: Start difference. First operand 716 states and 907 transitions. Second operand has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 7 states have internal predecessors, (55), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-21 01:50:08,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:50:08,652 INFO L93 Difference]: Finished difference Result 793 states and 1002 transitions. [2023-12-21 01:50:08,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 01:50:08,653 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 7 states have internal predecessors, (55), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) Word has length 147 [2023-12-21 01:50:08,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:50:08,655 INFO L225 Difference]: With dead ends: 793 [2023-12-21 01:50:08,655 INFO L226 Difference]: Without dead ends: 791 [2023-12-21 01:50:08,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-21 01:50:08,656 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 88 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 01:50:08,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 720 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 01:50:08,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2023-12-21 01:50:08,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 440. [2023-12-21 01:50:08,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 374 states have (on average 1.2058823529411764) internal successors, (451), 377 states have internal predecessors, (451), 53 states have call successors, (53), 12 states have call predecessors, (53), 12 states have return successors, (53), 50 states have call predecessors, (53), 53 states have call successors, (53) [2023-12-21 01:50:08,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 557 transitions. [2023-12-21 01:50:08,813 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 557 transitions. Word has length 147 [2023-12-21 01:50:08,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:50:08,813 INFO L495 AbstractCegarLoop]: Abstraction has 440 states and 557 transitions. [2023-12-21 01:50:08,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 7 states have internal predecessors, (55), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-21 01:50:08,813 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 557 transitions. [2023-12-21 01:50:08,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-21 01:50:08,814 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:50:08,814 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:50:08,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-12-21 01:50:08,814 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:50:08,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:50:08,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1965825306, now seen corresponding path program 1 times [2023-12-21 01:50:08,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:50:08,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231568709] [2023-12-21 01:50:08,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:50:08,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:50:08,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:50:08,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:50:08,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:50:08,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:50:08,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:50:08,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:50:08,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:50:08,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:50:08,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:50:08,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:50:08,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:50:08,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:50:08,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:50:08,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:50:08,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:50:08,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:50:08,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:50:08,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:50:08,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:50:08,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:08,993 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-21 01:50:08,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:50:08,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231568709] [2023-12-21 01:50:08,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231568709] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:50:08,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:50:08,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 01:50:08,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609312388] [2023-12-21 01:50:08,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:50:08,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 01:50:08,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:50:08,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 01:50:08,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:50:08,995 INFO L87 Difference]: Start difference. First operand 440 states and 557 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, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-21 01:50:09,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:50:09,144 INFO L93 Difference]: Finished difference Result 914 states and 1153 transitions. [2023-12-21 01:50:09,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 01:50:09,145 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, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 147 [2023-12-21 01:50:09,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:50:09,146 INFO L225 Difference]: With dead ends: 914 [2023-12-21 01:50:09,146 INFO L226 Difference]: Without dead ends: 475 [2023-12-21 01:50:09,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:50:09,147 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 68 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 01:50:09,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 531 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 01:50:09,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2023-12-21 01:50:09,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 474. [2023-12-21 01:50:09,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 395 states have (on average 1.1848101265822786) internal successors, (468), 399 states have internal predecessors, (468), 62 states have call successors, (62), 16 states have call predecessors, (62), 16 states have return successors, (62), 58 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-21 01:50:09,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 592 transitions. [2023-12-21 01:50:09,278 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 592 transitions. Word has length 147 [2023-12-21 01:50:09,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:50:09,279 INFO L495 AbstractCegarLoop]: Abstraction has 474 states and 592 transitions. [2023-12-21 01:50:09,279 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, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-21 01:50:09,280 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 592 transitions. [2023-12-21 01:50:09,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-21 01:50:09,280 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:50:09,280 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:50:09,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-12-21 01:50:09,281 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:50:09,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:50:09,281 INFO L85 PathProgramCache]: Analyzing trace with hash 2023083608, now seen corresponding path program 1 times [2023-12-21 01:50:09,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:50:09,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910005564] [2023-12-21 01:50:09,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:50:09,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:50:09,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:50:09,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:50:09,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:50:09,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:50:09,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:50:09,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:50:09,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:50:09,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:50:09,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:50:09,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:50:09,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:50:09,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:50:09,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:50:09,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:50:09,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:50:09,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:50:09,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:50:09,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 01:50:09,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 01:50:09,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,378 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-21 01:50:09,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:50:09,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910005564] [2023-12-21 01:50:09,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910005564] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:50:09,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:50:09,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 01:50:09,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532475494] [2023-12-21 01:50:09,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:50:09,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 01:50:09,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:50:09,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 01:50:09,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:50:09,381 INFO L87 Difference]: Start difference. First operand 474 states and 592 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, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-21 01:50:09,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:50:09,523 INFO L93 Difference]: Finished difference Result 949 states and 1181 transitions. [2023-12-21 01:50:09,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 01:50:09,523 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, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 147 [2023-12-21 01:50:09,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:50:09,533 INFO L225 Difference]: With dead ends: 949 [2023-12-21 01:50:09,533 INFO L226 Difference]: Without dead ends: 498 [2023-12-21 01:50:09,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:50:09,540 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 16 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 01:50:09,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 507 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 01:50:09,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2023-12-21 01:50:09,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 486. [2023-12-21 01:50:09,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 407 states have (on average 1.1793611793611793) internal successors, (480), 411 states have internal predecessors, (480), 62 states have call successors, (62), 16 states have call predecessors, (62), 16 states have return successors, (62), 58 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-21 01:50:09,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 604 transitions. [2023-12-21 01:50:09,654 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 604 transitions. Word has length 147 [2023-12-21 01:50:09,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:50:09,655 INFO L495 AbstractCegarLoop]: Abstraction has 486 states and 604 transitions. [2023-12-21 01:50:09,655 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, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-21 01:50:09,655 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 604 transitions. [2023-12-21 01:50:09,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-21 01:50:09,656 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:50:09,656 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:50:09,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-12-21 01:50:09,656 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:50:09,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:50:09,656 INFO L85 PathProgramCache]: Analyzing trace with hash 17285203, now seen corresponding path program 1 times [2023-12-21 01:50:09,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:50:09,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66838163] [2023-12-21 01:50:09,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:50:09,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:50:09,671 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:50:09,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1609359205] [2023-12-21 01:50:09,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:50:09,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:50:09,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:50:09,674 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:50:09,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 01:50:09,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:09,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 01:50:09,919 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:50:10,022 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:50:10,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 18 [2023-12-21 01:50:10,041 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-21 01:50:10,041 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:50:10,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:50:10,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66838163] [2023-12-21 01:50:10,041 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:50:10,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609359205] [2023-12-21 01:50:10,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609359205] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:50:10,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:50:10,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 01:50:10,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897243200] [2023-12-21 01:50:10,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:50:10,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 01:50:10,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:50:10,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 01:50:10,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:50:10,043 INFO L87 Difference]: Start difference. First operand 486 states and 604 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-21 01:50:10,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:50:10,529 INFO L93 Difference]: Finished difference Result 1303 states and 1600 transitions. [2023-12-21 01:50:10,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 01:50:10,529 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 149 [2023-12-21 01:50:10,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:50:10,531 INFO L225 Difference]: With dead ends: 1303 [2023-12-21 01:50:10,531 INFO L226 Difference]: Without dead ends: 840 [2023-12-21 01:50:10,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-21 01:50:10,532 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 110 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 01:50:10,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 397 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 01:50:10,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2023-12-21 01:50:10,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 685. [2023-12-21 01:50:10,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 590 states have (on average 1.1627118644067798) internal successors, (686), 595 states have internal predecessors, (686), 75 states have call successors, (75), 19 states have call predecessors, (75), 19 states have return successors, (75), 70 states have call predecessors, (75), 75 states have call successors, (75) [2023-12-21 01:50:10,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 836 transitions. [2023-12-21 01:50:10,692 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 836 transitions. Word has length 149 [2023-12-21 01:50:10,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:50:10,692 INFO L495 AbstractCegarLoop]: Abstraction has 685 states and 836 transitions. [2023-12-21 01:50:10,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-21 01:50:10,693 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 836 transitions. [2023-12-21 01:50:10,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-21 01:50:10,694 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:50:10,694 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:50:10,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-21 01:50:10,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-12-21 01:50:10,900 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:50:10,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:50:10,900 INFO L85 PathProgramCache]: Analyzing trace with hash 275450641, now seen corresponding path program 1 times [2023-12-21 01:50:10,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:50:10,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321083794] [2023-12-21 01:50:10,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:50:10,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:50:10,938 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:50:10,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [968581308] [2023-12-21 01:50:10,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:50:10,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:50:10,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:50:10,949 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:50:10,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 01:50:11,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:11,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-21 01:50:11,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:50:11,339 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:50:11,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 79 treesize of output 35 [2023-12-21 01:50:11,370 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-21 01:50:11,370 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:50:11,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:50:11,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321083794] [2023-12-21 01:50:11,370 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:50:11,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968581308] [2023-12-21 01:50:11,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968581308] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:50:11,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:50:11,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 01:50:11,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627103564] [2023-12-21 01:50:11,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:50:11,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 01:50:11,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:50:11,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 01:50:11,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:50:11,372 INFO L87 Difference]: Start difference. First operand 685 states and 836 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-21 01:50:11,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:50:11,900 INFO L93 Difference]: Finished difference Result 1476 states and 1788 transitions. [2023-12-21 01:50:11,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 01:50:11,900 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 149 [2023-12-21 01:50:11,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:50:11,902 INFO L225 Difference]: With dead ends: 1476 [2023-12-21 01:50:11,902 INFO L226 Difference]: Without dead ends: 814 [2023-12-21 01:50:11,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-21 01:50:11,903 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 71 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 01:50:11,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 687 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 01:50:11,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2023-12-21 01:50:12,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 783. [2023-12-21 01:50:12,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 783 states, 654 states have (on average 1.1406727828746177) internal successors, (746), 662 states have internal predecessors, (746), 101 states have call successors, (101), 27 states have call predecessors, (101), 27 states have return successors, (101), 93 states have call predecessors, (101), 101 states have call successors, (101) [2023-12-21 01:50:12,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 948 transitions. [2023-12-21 01:50:12,111 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 948 transitions. Word has length 149 [2023-12-21 01:50:12,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:50:12,111 INFO L495 AbstractCegarLoop]: Abstraction has 783 states and 948 transitions. [2023-12-21 01:50:12,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-21 01:50:12,111 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 948 transitions. [2023-12-21 01:50:12,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-21 01:50:12,112 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:50:12,112 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:50:12,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-21 01:50:12,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2023-12-21 01:50:12,318 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:50:12,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:50:12,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1940513237, now seen corresponding path program 1 times [2023-12-21 01:50:12,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:50:12,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92714235] [2023-12-21 01:50:12,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:50:12,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:50:12,333 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:50:12,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2237719] [2023-12-21 01:50:12,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:50:12,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:50:12,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:50:12,334 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:50:12,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 01:50:12,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:12,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-21 01:50:12,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:50:12,622 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:50:12,622 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 21 [2023-12-21 01:50:12,632 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-21 01:50:12,632 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:50:12,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:50:12,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92714235] [2023-12-21 01:50:12,632 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:50:12,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2237719] [2023-12-21 01:50:12,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2237719] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:50:12,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:50:12,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 01:50:12,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680991386] [2023-12-21 01:50:12,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:50:12,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 01:50:12,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:50:12,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 01:50:12,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:50:12,633 INFO L87 Difference]: Start difference. First operand 783 states and 948 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-21 01:50:13,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:50:13,115 INFO L93 Difference]: Finished difference Result 1958 states and 2348 transitions. [2023-12-21 01:50:13,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 01:50:13,116 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 149 [2023-12-21 01:50:13,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:50:13,119 INFO L225 Difference]: With dead ends: 1958 [2023-12-21 01:50:13,119 INFO L226 Difference]: Without dead ends: 1202 [2023-12-21 01:50:13,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:50:13,120 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 94 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 01:50:13,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 495 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 01:50:13,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1202 states. [2023-12-21 01:50:13,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 1008. [2023-12-21 01:50:13,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1008 states, 864 states have (on average 1.1423611111111112) internal successors, (987), 873 states have internal predecessors, (987), 112 states have call successors, (112), 31 states have call predecessors, (112), 31 states have return successors, (112), 103 states have call predecessors, (112), 112 states have call successors, (112) [2023-12-21 01:50:13,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1211 transitions. [2023-12-21 01:50:13,361 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1211 transitions. Word has length 149 [2023-12-21 01:50:13,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:50:13,361 INFO L495 AbstractCegarLoop]: Abstraction has 1008 states and 1211 transitions. [2023-12-21 01:50:13,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-21 01:50:13,361 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1211 transitions. [2023-12-21 01:50:13,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-21 01:50:13,362 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:50:13,362 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:50:13,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-21 01:50:13,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:50:13,569 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:50:13,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:50:13,569 INFO L85 PathProgramCache]: Analyzing trace with hash -2096288621, now seen corresponding path program 1 times [2023-12-21 01:50:13,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:50:13,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799670259] [2023-12-21 01:50:13,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:50:13,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:50:13,584 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:50:13,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [917577946] [2023-12-21 01:50:13,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:50:13,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:50:13,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:50:13,587 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:50:13,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 01:50:13,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:13,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-21 01:50:13,774 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:50:13,845 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:50:13,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 26 [2023-12-21 01:50:13,861 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-21 01:50:13,862 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:50:13,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:50:13,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799670259] [2023-12-21 01:50:13,862 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:50:13,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917577946] [2023-12-21 01:50:13,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917577946] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:50:13,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:50:13,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 01:50:13,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448363985] [2023-12-21 01:50:13,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:50:13,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 01:50:13,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:50:13,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 01:50:13,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:50:13,864 INFO L87 Difference]: Start difference. First operand 1008 states and 1211 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-21 01:50:14,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:50:14,430 INFO L93 Difference]: Finished difference Result 2284 states and 2712 transitions. [2023-12-21 01:50:14,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 01:50:14,431 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 149 [2023-12-21 01:50:14,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:50:14,444 INFO L225 Difference]: With dead ends: 2284 [2023-12-21 01:50:14,444 INFO L226 Difference]: Without dead ends: 1307 [2023-12-21 01:50:14,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-21 01:50:14,447 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 75 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 01:50:14,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 716 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 01:50:14,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1307 states. [2023-12-21 01:50:14,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1307 to 1135. [2023-12-21 01:50:14,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 991 states have (on average 1.1261352169525731) internal successors, (1116), 1000 states have internal predecessors, (1116), 112 states have call successors, (112), 31 states have call predecessors, (112), 31 states have return successors, (112), 103 states have call predecessors, (112), 112 states have call successors, (112) [2023-12-21 01:50:14,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 1340 transitions. [2023-12-21 01:50:14,711 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 1340 transitions. Word has length 149 [2023-12-21 01:50:14,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:50:14,711 INFO L495 AbstractCegarLoop]: Abstraction has 1135 states and 1340 transitions. [2023-12-21 01:50:14,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-21 01:50:14,711 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 1340 transitions. [2023-12-21 01:50:14,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-21 01:50:14,713 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:50:14,713 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:50:14,719 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-21 01:50:14,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:50:14,919 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:50:14,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:50:14,919 INFO L85 PathProgramCache]: Analyzing trace with hash -52189520, now seen corresponding path program 1 times [2023-12-21 01:50:14,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:50:14,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420472947] [2023-12-21 01:50:14,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:50:14,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:50:14,933 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:50:14,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2095198167] [2023-12-21 01:50:14,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:50:14,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:50:14,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:50:14,935 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:50:14,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 01:50:15,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:15,269 INFO L262 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-21 01:50:15,272 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:50:15,453 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:50:15,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 44 [2023-12-21 01:50:15,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 35 [2023-12-21 01:50:15,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 26 [2023-12-21 01:50:15,886 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-21 01:50:15,886 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:50:15,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:50:15,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420472947] [2023-12-21 01:50:15,886 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:50:15,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095198167] [2023-12-21 01:50:15,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095198167] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:50:15,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:50:15,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 01:50:15,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306879555] [2023-12-21 01:50:15,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:50:15,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 01:50:15,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:50:15,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 01:50:15,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:50:15,888 INFO L87 Difference]: Start difference. First operand 1135 states and 1340 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-21 01:50:19,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-21 01:50:24,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-21 01:50:26,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-21 01:50:29,352 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-21 01:50:33,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-21 01:50:37,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-21 01:50:38,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:50:38,853 INFO L93 Difference]: Finished difference Result 2807 states and 3272 transitions. [2023-12-21 01:50:38,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 01:50:38,854 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 150 [2023-12-21 01:50:38,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:50:38,857 INFO L225 Difference]: With dead ends: 2807 [2023-12-21 01:50:38,857 INFO L226 Difference]: Without dead ends: 1703 [2023-12-21 01:50:38,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:50:38,858 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 63 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:50:38,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 469 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 208 Invalid, 1 Unknown, 0 Unchecked, 22.1s Time] [2023-12-21 01:50:38,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2023-12-21 01:50:39,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1671. [2023-12-21 01:50:39,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1671 states, 1472 states have (on average 1.106657608695652) internal successors, (1629), 1489 states have internal predecessors, (1629), 152 states have call successors, (152), 46 states have call predecessors, (152), 46 states have return successors, (152), 135 states have call predecessors, (152), 152 states have call successors, (152) [2023-12-21 01:50:39,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1671 states to 1671 states and 1933 transitions. [2023-12-21 01:50:39,227 INFO L78 Accepts]: Start accepts. Automaton has 1671 states and 1933 transitions. Word has length 150 [2023-12-21 01:50:39,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:50:39,228 INFO L495 AbstractCegarLoop]: Abstraction has 1671 states and 1933 transitions. [2023-12-21 01:50:39,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-21 01:50:39,228 INFO L276 IsEmpty]: Start isEmpty. Operand 1671 states and 1933 transitions. [2023-12-21 01:50:39,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-21 01:50:39,229 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:50:39,229 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:50:39,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-21 01:50:39,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2023-12-21 01:50:39,437 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:50:39,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:50:39,438 INFO L85 PathProgramCache]: Analyzing trace with hash -445216530, now seen corresponding path program 1 times [2023-12-21 01:50:39,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:50:39,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458537494] [2023-12-21 01:50:39,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:50:39,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:50:39,452 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:50:39,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [795200498] [2023-12-21 01:50:39,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:50:39,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:50:39,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:50:39,453 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:50:39,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-21 01:50:39,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:39,663 INFO L262 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-21 01:50:39,665 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:50:39,682 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-21 01:50:39,682 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:50:39,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:50:39,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458537494] [2023-12-21 01:50:39,683 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:50:39,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795200498] [2023-12-21 01:50:39,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795200498] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:50:39,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:50:39,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 01:50:39,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466617532] [2023-12-21 01:50:39,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:50:39,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 01:50:39,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:50:39,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 01:50:39,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:50:39,684 INFO L87 Difference]: Start difference. First operand 1671 states and 1933 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-21 01:50:40,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:50:40,176 INFO L93 Difference]: Finished difference Result 3379 states and 3895 transitions. [2023-12-21 01:50:40,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 01:50:40,177 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 150 [2023-12-21 01:50:40,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:50:40,179 INFO L225 Difference]: With dead ends: 3379 [2023-12-21 01:50:40,180 INFO L226 Difference]: Without dead ends: 1743 [2023-12-21 01:50:40,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-21 01:50:40,182 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 23 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 01:50:40,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 634 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 01:50:40,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1743 states. [2023-12-21 01:50:40,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1743 to 1623. [2023-12-21 01:50:40,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1623 states, 1424 states have (on average 1.0990168539325842) internal successors, (1565), 1441 states have internal predecessors, (1565), 152 states have call successors, (152), 46 states have call predecessors, (152), 46 states have return successors, (152), 135 states have call predecessors, (152), 152 states have call successors, (152) [2023-12-21 01:50:40,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1623 states to 1623 states and 1869 transitions. [2023-12-21 01:50:40,559 INFO L78 Accepts]: Start accepts. Automaton has 1623 states and 1869 transitions. Word has length 150 [2023-12-21 01:50:40,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:50:40,560 INFO L495 AbstractCegarLoop]: Abstraction has 1623 states and 1869 transitions. [2023-12-21 01:50:40,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-21 01:50:40,560 INFO L276 IsEmpty]: Start isEmpty. Operand 1623 states and 1869 transitions. [2023-12-21 01:50:40,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-21 01:50:40,561 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:50:40,561 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:50:40,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-21 01:50:40,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:50:40,768 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:50:40,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:50:40,768 INFO L85 PathProgramCache]: Analyzing trace with hash -114229134, now seen corresponding path program 1 times [2023-12-21 01:50:40,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:50:40,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350686051] [2023-12-21 01:50:40,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:50:40,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:50:40,782 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:50:40,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [854837908] [2023-12-21 01:50:40,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:50:40,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:50:40,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:50:40,783 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:50:40,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-21 01:50:40,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:50:40,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-21 01:50:41,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:50:41,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-21 01:50:41,062 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2023-12-21 01:50:41,062 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 01:50:41,158 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-21 01:50:41,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:50:41,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350686051] [2023-12-21 01:50:41,158 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:50:41,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854837908] [2023-12-21 01:50:41,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854837908] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-21 01:50:41,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 01:50:41,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 12 [2023-12-21 01:50:41,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668215914] [2023-12-21 01:50:41,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:50:41,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 01:50:41,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:50:41,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 01:50:41,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-21 01:50:41,159 INFO L87 Difference]: Start difference. First operand 1623 states and 1869 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-21 01:50:42,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:50:42,053 INFO L93 Difference]: Finished difference Result 4479 states and 5139 transitions. [2023-12-21 01:50:42,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 01:50:42,054 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 150 [2023-12-21 01:50:42,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:50:42,054 INFO L225 Difference]: With dead ends: 4479 [2023-12-21 01:50:42,054 INFO L226 Difference]: Without dead ends: 0 [2023-12-21 01:50:42,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2023-12-21 01:50:42,058 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 136 mSDsluCounter, 1059 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:50:42,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 1306 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 01:50:42,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-21 01:50:42,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-21 01:50:42,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 01:50:42,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-21 01:50:42,058 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 150 [2023-12-21 01:50:42,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:50:42,059 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-21 01:50:42,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-21 01:50:42,059 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-21 01:50:42,059 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-21 01:50:42,063 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 01:50:42,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-21 01:50:42,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:50:42,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. Received shutdown request... [2023-12-21 02:02:53,930 WARN L619 AbstractCegarLoop]: Verification canceled: while PolyPacSimplificationTermWalker was simplifying a ∨-41-4-18-4-18-4-16-4-16-4-16-4-15-3-14-3-13-3-12-3-11-3-9-3-9-3-9-3-9-2-9-2-7-2-5-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-108-4-19-4-19-4-20-4-19-4-19-4-14-3-13-3-12-3-11-3-9-3-9-3-9-3-9-2-9-2-7-2-5-2-1 context. [2023-12-21 02:02:53,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-21 02:02:53,930 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 02:02:53,969 INFO L257 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2023-12-21 02:02:53,970 INFO L158 Benchmark]: Toolchain (without parser) took 859081.41ms. Allocated memory was 314.6MB in the beginning and 955.3MB in the end (delta: 640.7MB). Free memory was 263.0MB in the beginning and 625.1MB in the end (delta: -362.2MB). Peak memory consumption was 280.1MB. Max. memory is 8.0GB. [2023-12-21 02:02:53,970 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 178.3MB. Free memory is still 129.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 02:02:53,970 INFO L158 Benchmark]: CACSL2BoogieTranslator took 266.32ms. Allocated memory is still 314.6MB. Free memory was 263.0MB in the beginning and 247.6MB in the end (delta: 15.4MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-21 02:02:53,970 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.02ms. Allocated memory is still 314.6MB. Free memory was 247.6MB in the beginning and 242.5MB in the end (delta: 5.1MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-21 02:02:53,970 INFO L158 Benchmark]: Boogie Preprocessor took 52.97ms. Allocated memory is still 314.6MB. Free memory was 242.5MB in the beginning and 237.3MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-21 02:02:53,970 INFO L158 Benchmark]: RCFGBuilder took 619.42ms. Allocated memory is still 314.6MB. Free memory was 237.3MB in the beginning and 201.6MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 8.0GB. [2023-12-21 02:02:53,970 INFO L158 Benchmark]: TraceAbstraction took 858073.06ms. Allocated memory was 314.6MB in the beginning and 955.3MB in the end (delta: 640.7MB). Free memory was 201.1MB in the beginning and 625.1MB in the end (delta: -424.0MB). Peak memory consumption was 218.2MB. Max. memory is 8.0GB. [2023-12-21 02:02:53,971 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 178.3MB. Free memory is still 129.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 266.32ms. Allocated memory is still 314.6MB. Free memory was 263.0MB in the beginning and 247.6MB in the end (delta: 15.4MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 65.02ms. Allocated memory is still 314.6MB. Free memory was 247.6MB in the beginning and 242.5MB in the end (delta: 5.1MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 52.97ms. Allocated memory is still 314.6MB. Free memory was 242.5MB in the beginning and 237.3MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 619.42ms. Allocated memory is still 314.6MB. Free memory was 237.3MB in the beginning and 201.6MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 8.0GB. * TraceAbstraction took 858073.06ms. Allocated memory was 314.6MB in the beginning and 955.3MB in the end (delta: 640.7MB). Free memory was 201.1MB in the beginning and 625.1MB in the end (delta: -424.0MB). Peak memory consumption was 218.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while PolyPacSimplificationTermWalker was simplifying a ∨-41-4-18-4-18-4-16-4-16-4-16-4-15-3-14-3-13-3-12-3-11-3-9-3-9-3-9-3-9-2-9-2-7-2-5-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-48-4-18-4-18-4-16-4-16-4-16-4-15-3-14-3-13-3-12-3-11-3-9-3-9-3-9-3-9-2-9-2-7-2-5-2-1 context. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown