/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-71.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 15:24:14,306 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 15:24:14,353 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 15:24:14,356 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 15:24:14,357 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 15:24:14,375 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 15:24:14,375 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 15:24:14,375 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 15:24:14,379 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 15:24:14,379 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 15:24:14,379 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 15:24:14,380 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 15:24:14,380 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 15:24:14,380 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 15:24:14,381 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 15:24:14,381 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 15:24:14,381 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 15:24:14,382 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 15:24:14,382 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 15:24:14,382 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 15:24:14,382 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 15:24:14,385 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 15:24:14,386 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 15:24:14,386 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 15:24:14,386 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 15:24:14,386 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 15:24:14,387 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 15:24:14,387 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 15:24:14,387 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 15:24:14,387 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 15:24:14,388 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 15:24:14,388 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 15:24:14,388 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 15:24:14,389 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 15:24:14,389 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 15:24:14,389 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 15:24:14,389 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 15:24:14,390 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 15:24:14,390 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 15:24:14,390 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 15:24:14,390 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 15:24:14,393 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 15:24:14,394 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 15:24:14,394 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 15:24:14,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 15:24:14,617 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 15:24:14,619 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 15:24:14,620 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 15:24:14,620 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 15:24:14,621 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-71.i [2023-12-19 15:24:15,751 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 15:24:15,966 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 15:24:15,966 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-71.i [2023-12-19 15:24:15,974 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29ef36efb/5fe4476f6ae641949c430d205220fff9/FLAG488b54162 [2023-12-19 15:24:15,988 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29ef36efb/5fe4476f6ae641949c430d205220fff9 [2023-12-19 15:24:15,990 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 15:24:15,991 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 15:24:15,992 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 15:24:15,992 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 15:24:15,996 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 15:24:15,996 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 03:24:15" (1/1) ... [2023-12-19 15:24:15,997 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fc2401c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:24:15, skipping insertion in model container [2023-12-19 15:24:15,997 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 03:24:15" (1/1) ... [2023-12-19 15:24:16,038 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 15:24:16,182 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-71.i[917,930] [2023-12-19 15:24:16,250 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 15:24:16,259 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 15:24:16,274 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-71.i[917,930] [2023-12-19 15:24:16,317 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 15:24:16,336 INFO L206 MainTranslator]: Completed translation [2023-12-19 15:24:16,336 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:24:16 WrapperNode [2023-12-19 15:24:16,336 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 15:24:16,337 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 15:24:16,337 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 15:24:16,337 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 15:24:16,343 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:24:16" (1/1) ... [2023-12-19 15:24:16,364 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:24:16" (1/1) ... [2023-12-19 15:24:16,416 INFO L138 Inliner]: procedures = 26, calls = 173, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 509 [2023-12-19 15:24:16,416 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 15:24:16,417 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 15:24:16,417 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 15:24:16,417 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 15:24:16,433 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:24:16" (1/1) ... [2023-12-19 15:24:16,434 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:24:16" (1/1) ... [2023-12-19 15:24:16,445 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:24:16" (1/1) ... [2023-12-19 15:24:16,463 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]. [2023-12-19 15:24:16,463 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:24:16" (1/1) ... [2023-12-19 15:24:16,463 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:24:16" (1/1) ... [2023-12-19 15:24:16,475 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:24:16" (1/1) ... [2023-12-19 15:24:16,479 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:24:16" (1/1) ... [2023-12-19 15:24:16,481 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:24:16" (1/1) ... [2023-12-19 15:24:16,484 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:24:16" (1/1) ... [2023-12-19 15:24:16,488 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 15:24:16,489 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 15:24:16,489 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 15:24:16,489 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 15:24:16,490 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:24:16" (1/1) ... [2023-12-19 15:24:16,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 15:24:16,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:24:16,565 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 15:24:16,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 15:24:16,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 15:24:16,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-19 15:24:16,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-19 15:24:16,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-19 15:24:16,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-12-19 15:24:16,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-12-19 15:24:16,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-12-19 15:24:16,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-19 15:24:16,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-19 15:24:16,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-19 15:24:16,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-12-19 15:24:16,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-12-19 15:24:16,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-12-19 15:24:16,601 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 15:24:16,601 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 15:24:16,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 15:24:16,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-19 15:24:16,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-19 15:24:16,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-19 15:24:16,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-12-19 15:24:16,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-12-19 15:24:16,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 15:24:16,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 15:24:16,723 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 15:24:16,725 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 15:24:17,222 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 15:24:17,269 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 15:24:17,270 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 15:24:17,271 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 03:24:17 BoogieIcfgContainer [2023-12-19 15:24:17,271 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 15:24:17,274 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 15:24:17,274 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 15:24:17,277 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 15:24:17,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 03:24:15" (1/3) ... [2023-12-19 15:24:17,278 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39678e3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 03:24:17, skipping insertion in model container [2023-12-19 15:24:17,278 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:24:16" (2/3) ... [2023-12-19 15:24:17,278 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39678e3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 03:24:17, skipping insertion in model container [2023-12-19 15:24:17,278 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 03:24:17" (3/3) ... [2023-12-19 15:24:17,280 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-ap_file-71.i [2023-12-19 15:24:17,295 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 15:24:17,295 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 15:24:17,345 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 15:24:17,351 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;@6bd21f1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 15:24:17,351 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 15:24:17,355 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) [2023-12-19 15:24:17,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-19 15:24:17,373 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:24:17,374 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] [2023-12-19 15:24:17,375 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:24:17,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:24:17,381 INFO L85 PathProgramCache]: Analyzing trace with hash 139059872, now seen corresponding path program 1 times [2023-12-19 15:24:17,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:24:17,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890573484] [2023-12-19 15:24:17,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:24:17,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:24:17,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:17,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:24:17,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:17,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:24:17,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:17,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:24:17,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:17,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:24:17,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:17,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:24:17,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:17,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:24:17,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:17,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:24:17,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:17,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:24:17,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:17,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:24:17,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:17,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:24:17,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:17,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:24:17,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:17,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:24:17,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:17,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:24:17,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:17,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:24:17,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:17,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:24:17,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:17,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:24:17,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:17,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:24:17,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:17,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:24:17,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:17,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 15:24:17,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:17,821 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-19 15:24:17,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:24:17,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890573484] [2023-12-19 15:24:17,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890573484] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:24:17,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:24:17,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 15:24:17,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882971129] [2023-12-19 15:24:17,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:24:17,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 15:24:17,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:24:17,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 15:24:17,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 15:24:17,855 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) [2023-12-19 15:24:17,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:24:17,907 INFO L93 Difference]: Finished difference Result 193 states and 309 transitions. [2023-12-19 15:24:17,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 15:24:17,909 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 [2023-12-19 15:24:17,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:24:17,918 INFO L225 Difference]: With dead ends: 193 [2023-12-19 15:24:17,918 INFO L226 Difference]: Without dead ends: 96 [2023-12-19 15:24:17,922 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 [2023-12-19 15:24:17,926 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 [2023-12-19 15:24:17,927 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] [2023-12-19 15:24:17,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-12-19 15:24:17,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2023-12-19 15:24:17,992 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) [2023-12-19 15:24:17,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 139 transitions. [2023-12-19 15:24:18,000 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 139 transitions. Word has length 139 [2023-12-19 15:24:18,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:24:18,001 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 139 transitions. [2023-12-19 15:24:18,001 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) [2023-12-19 15:24:18,002 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 139 transitions. [2023-12-19 15:24:18,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-19 15:24:18,012 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:24:18,012 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] [2023-12-19 15:24:18,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 15:24:18,014 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:24:18,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:24:18,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1954629318, now seen corresponding path program 1 times [2023-12-19 15:24:18,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:24:18,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421467240] [2023-12-19 15:24:18,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:24:18,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:24:18,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:18,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:24:18,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:18,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:24:18,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:18,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:24:18,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:18,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:24:18,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:18,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:24:18,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:18,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:24:18,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:18,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:24:18,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:18,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:24:18,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:18,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:24:18,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:18,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:24:18,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:18,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:24:18,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:18,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:24:18,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:18,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:24:18,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:18,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:24:18,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:18,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:24:18,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:18,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:24:18,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:18,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:24:18,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:18,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:24:18,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:18,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 15:24:18,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:18,399 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-19 15:24:18,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:24:18,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421467240] [2023-12-19 15:24:18,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421467240] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:24:18,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:24:18,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 15:24:18,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629311467] [2023-12-19 15:24:18,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:24:18,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 15:24:18,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:24:18,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 15:24:18,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 15:24:18,405 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) [2023-12-19 15:24:18,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:24:18,483 INFO L93 Difference]: Finished difference Result 199 states and 288 transitions. [2023-12-19 15:24:18,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 15:24:18,483 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 [2023-12-19 15:24:18,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:24:18,485 INFO L225 Difference]: With dead ends: 199 [2023-12-19 15:24:18,485 INFO L226 Difference]: Without dead ends: 104 [2023-12-19 15:24:18,486 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 [2023-12-19 15:24:18,487 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 [2023-12-19 15:24:18,487 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] [2023-12-19 15:24:18,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-12-19 15:24:18,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 98. [2023-12-19 15:24:18,495 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) [2023-12-19 15:24:18,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 141 transitions. [2023-12-19 15:24:18,496 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 141 transitions. Word has length 139 [2023-12-19 15:24:18,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:24:18,498 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 141 transitions. [2023-12-19 15:24:18,498 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) [2023-12-19 15:24:18,498 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 141 transitions. [2023-12-19 15:24:18,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-19 15:24:18,499 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:24:18,499 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] [2023-12-19 15:24:18,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 15:24:18,500 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:24:18,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:24:18,500 INFO L85 PathProgramCache]: Analyzing trace with hash 2011887620, now seen corresponding path program 1 times [2023-12-19 15:24:18,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:24:18,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610694973] [2023-12-19 15:24:18,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:24:18,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:24:18,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:18,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:24:18,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:18,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:24:18,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:18,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:24:18,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:18,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:24:18,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:18,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:24:18,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:18,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:24:18,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:18,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:24:18,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:18,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:24:18,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:18,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:24:18,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:18,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:24:18,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:18,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:24:18,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:18,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:24:18,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:18,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:24:18,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:18,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:24:18,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:18,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:24:18,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:18,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:24:18,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:18,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:24:18,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:18,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:24:18,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:18,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 15:24:18,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:18,713 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-19 15:24:18,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:24:18,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610694973] [2023-12-19 15:24:18,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610694973] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:24:18,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:24:18,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 15:24:18,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863000965] [2023-12-19 15:24:18,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:24:18,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 15:24:18,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:24:18,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 15:24:18,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 15:24:18,720 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) [2023-12-19 15:24:18,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:24:18,772 INFO L93 Difference]: Finished difference Result 199 states and 286 transitions. [2023-12-19 15:24:18,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 15:24:18,772 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 [2023-12-19 15:24:18,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:24:18,778 INFO L225 Difference]: With dead ends: 199 [2023-12-19 15:24:18,778 INFO L226 Difference]: Without dead ends: 102 [2023-12-19 15:24:18,783 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 [2023-12-19 15:24:18,783 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 [2023-12-19 15:24:18,784 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] [2023-12-19 15:24:18,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-12-19 15:24:18,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2023-12-19 15:24:18,790 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) [2023-12-19 15:24:18,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 143 transitions. [2023-12-19 15:24:18,791 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 143 transitions. Word has length 139 [2023-12-19 15:24:18,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:24:18,792 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 143 transitions. [2023-12-19 15:24:18,795 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) [2023-12-19 15:24:18,796 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 143 transitions. [2023-12-19 15:24:18,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-19 15:24:18,799 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:24:18,799 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] [2023-12-19 15:24:18,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 15:24:18,799 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:24:18,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:24:18,800 INFO L85 PathProgramCache]: Analyzing trace with hash 2011947202, now seen corresponding path program 1 times [2023-12-19 15:24:18,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:24:18,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057868763] [2023-12-19 15:24:18,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:24:18,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:24:18,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:19,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:24:19,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:19,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:24:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:19,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:24:19,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:19,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:24:19,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:19,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:24:19,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:19,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:24:19,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:19,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:24:19,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:19,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:24:19,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:19,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:24:19,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:19,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:24:19,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:19,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:24:19,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:19,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:24:19,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:19,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:24:19,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:19,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:24:19,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:19,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:24:19,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:19,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:24:19,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:19,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:24:19,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:19,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:24:19,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:19,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 15:24:19,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:19,127 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-19 15:24:19,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:24:19,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057868763] [2023-12-19 15:24:19,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057868763] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:24:19,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:24:19,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 15:24:19,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003505403] [2023-12-19 15:24:19,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:24:19,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 15:24:19,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:24:19,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 15:24:19,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 15:24:19,130 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) [2023-12-19 15:24:19,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:24:19,233 INFO L93 Difference]: Finished difference Result 247 states and 352 transitions. [2023-12-19 15:24:19,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 15:24:19,234 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 [2023-12-19 15:24:19,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:24:19,236 INFO L225 Difference]: With dead ends: 247 [2023-12-19 15:24:19,236 INFO L226 Difference]: Without dead ends: 148 [2023-12-19 15:24:19,236 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 [2023-12-19 15:24:19,237 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 91 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 15:24:19,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 627 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 15:24:19,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-12-19 15:24:19,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 102. [2023-12-19 15:24:19,244 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) [2023-12-19 15:24:19,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 145 transitions. [2023-12-19 15:24:19,245 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 145 transitions. Word has length 139 [2023-12-19 15:24:19,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:24:19,246 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 145 transitions. [2023-12-19 15:24:19,246 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) [2023-12-19 15:24:19,246 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 145 transitions. [2023-12-19 15:24:19,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-19 15:24:19,247 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:24:19,248 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] [2023-12-19 15:24:19,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 15:24:19,252 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:24:19,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:24:19,252 INFO L85 PathProgramCache]: Analyzing trace with hash -230790985, now seen corresponding path program 1 times [2023-12-19 15:24:19,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:24:19,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683215814] [2023-12-19 15:24:19,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:24:19,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:24:19,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:19,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:24:19,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:19,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:24:19,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:19,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:24:19,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:19,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:24:19,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:19,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:24:19,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:19,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:24:19,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:19,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:24:19,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:19,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:24:19,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:19,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:24:19,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:19,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:24:19,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:19,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:24:19,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:19,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:24:19,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:19,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:24:19,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:19,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:24:19,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:19,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:24:19,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:19,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:24:19,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:19,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:24:19,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:19,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:24:19,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:19,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 15:24:19,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:19,826 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-19 15:24:19,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:24:19,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683215814] [2023-12-19 15:24:19,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683215814] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:24:19,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:24:19,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 15:24:19,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063622288] [2023-12-19 15:24:19,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:24:19,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 15:24:19,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:24:19,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 15:24:19,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 15:24:19,831 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) [2023-12-19 15:24:19,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:24:19,992 INFO L93 Difference]: Finished difference Result 297 states and 419 transitions. [2023-12-19 15:24:19,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 15:24:19,993 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 [2023-12-19 15:24:19,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:24:19,996 INFO L225 Difference]: With dead ends: 297 [2023-12-19 15:24:19,996 INFO L226 Difference]: Without dead ends: 196 [2023-12-19 15:24:19,997 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 [2023-12-19 15:24:20,001 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 [2023-12-19 15:24:20,001 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] [2023-12-19 15:24:20,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2023-12-19 15:24:20,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 114. [2023-12-19 15:24:20,019 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) [2023-12-19 15:24:20,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 163 transitions. [2023-12-19 15:24:20,020 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 163 transitions. Word has length 140 [2023-12-19 15:24:20,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:24:20,020 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 163 transitions. [2023-12-19 15:24:20,021 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) [2023-12-19 15:24:20,021 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 163 transitions. [2023-12-19 15:24:20,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-19 15:24:20,022 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:24:20,022 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] [2023-12-19 15:24:20,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 15:24:20,022 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:24:20,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:24:20,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1580659255, now seen corresponding path program 1 times [2023-12-19 15:24:20,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:24:20,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380348790] [2023-12-19 15:24:20,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:24:20,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:24:20,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:20,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:24:20,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:20,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:24:20,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:20,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:24:20,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:20,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:24:20,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:20,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:24:20,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:20,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:24:20,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:20,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:24:20,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:20,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:24:20,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:20,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:24:20,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:20,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:24:20,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:20,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:24:20,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:20,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:24:20,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:20,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:24:20,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:20,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:24:20,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:20,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:24:20,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:20,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:24:20,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:20,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:24:20,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:20,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:24:20,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:20,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 15:24:20,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:20,835 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-19 15:24:20,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:24:20,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380348790] [2023-12-19 15:24:20,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380348790] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:24:20,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:24:20,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 15:24:20,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700839158] [2023-12-19 15:24:20,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:24:20,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 15:24:20,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:24:20,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 15:24:20,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-19 15:24:20,837 INFO L87 Difference]: Start difference. First operand 114 states and 163 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-19 15:24:21,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:24:21,297 INFO L93 Difference]: Finished difference Result 323 states and 457 transitions. [2023-12-19 15:24:21,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 15:24:21,298 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 141 [2023-12-19 15:24:21,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:24:21,299 INFO L225 Difference]: With dead ends: 323 [2023-12-19 15:24:21,299 INFO L226 Difference]: Without dead ends: 210 [2023-12-19 15:24:21,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2023-12-19 15:24:21,302 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 327 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 15:24:21,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 726 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 15:24:21,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2023-12-19 15:24:21,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 187. [2023-12-19 15:24:21,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 154 states have (on average 1.3311688311688312) internal successors, (205), 155 states have internal predecessors, (205), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-19 15:24:21,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 265 transitions. [2023-12-19 15:24:21,330 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 265 transitions. Word has length 141 [2023-12-19 15:24:21,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:24:21,331 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 265 transitions. [2023-12-19 15:24:21,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-19 15:24:21,331 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 265 transitions. [2023-12-19 15:24:21,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-19 15:24:21,333 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:24:21,333 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] [2023-12-19 15:24:21,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 15:24:21,333 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:24:21,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:24:21,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1898131422, now seen corresponding path program 1 times [2023-12-19 15:24:21,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:24:21,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953265228] [2023-12-19 15:24:21,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:24:21,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:24:21,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:21,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:24:21,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:21,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:24:21,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:21,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:24:21,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:21,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:24:21,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:21,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:24:21,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:21,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:24:21,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:21,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:24:21,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:21,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:24:21,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:21,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:24:21,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:21,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:24:21,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:21,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:24:21,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:21,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:24:21,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:21,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:24:21,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:21,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:24:21,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:21,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:24:21,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:21,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:24:21,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:21,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:24:21,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:21,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:24:21,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:21,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 15:24:21,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:21,578 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-19 15:24:21,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:24:21,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953265228] [2023-12-19 15:24:21,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953265228] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:24:21,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:24:21,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 15:24:21,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789337698] [2023-12-19 15:24:21,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:24:21,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 15:24:21,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:24:21,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 15:24:21,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 15:24:21,580 INFO L87 Difference]: Start difference. First operand 187 states and 265 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2023-12-19 15:24:21,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:24:21,663 INFO L93 Difference]: Finished difference Result 420 states and 590 transitions. [2023-12-19 15:24:21,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 15:24:21,663 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 141 [2023-12-19 15:24:21,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:24:21,666 INFO L225 Difference]: With dead ends: 420 [2023-12-19 15:24:21,666 INFO L226 Difference]: Without dead ends: 234 [2023-12-19 15:24:21,666 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 [2023-12-19 15:24:21,669 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 98 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 15:24:21,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 539 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 15:24:21,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2023-12-19 15:24:21,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 181. [2023-12-19 15:24:21,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 148 states have (on average 1.3108108108108107) internal successors, (194), 149 states have internal predecessors, (194), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-19 15:24:21,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 254 transitions. [2023-12-19 15:24:21,686 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 254 transitions. Word has length 141 [2023-12-19 15:24:21,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:24:21,686 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 254 transitions. [2023-12-19 15:24:21,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2023-12-19 15:24:21,687 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 254 transitions. [2023-12-19 15:24:21,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-19 15:24:21,688 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:24:21,688 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] [2023-12-19 15:24:21,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 15:24:21,688 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:24:21,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:24:21,689 INFO L85 PathProgramCache]: Analyzing trace with hash -155774261, now seen corresponding path program 1 times [2023-12-19 15:24:21,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:24:21,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564953045] [2023-12-19 15:24:21,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:24:21,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:24:21,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:21,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:24:21,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:21,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:24:21,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:21,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:24:21,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:21,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:24:21,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:21,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:24:21,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:21,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:24:21,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:21,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:24:21,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:21,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:24:21,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:21,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:24:21,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:21,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:24:21,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:21,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:24:21,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:21,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:24:21,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:21,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:24:21,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:21,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:24:21,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:21,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:24:21,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:21,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:24:21,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:21,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:24:21,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:21,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:24:21,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:21,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 15:24:21,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:21,945 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-19 15:24:21,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:24:21,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564953045] [2023-12-19 15:24:21,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564953045] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:24:21,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:24:21,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 15:24:21,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926486629] [2023-12-19 15:24:21,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:24:21,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 15:24:21,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:24:21,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 15:24:21,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 15:24:21,947 INFO L87 Difference]: Start difference. First operand 181 states and 254 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 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) [2023-12-19 15:24:22,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:24:22,016 INFO L93 Difference]: Finished difference Result 386 states and 538 transitions. [2023-12-19 15:24:22,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 15:24:22,017 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 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 [2023-12-19 15:24:22,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:24:22,018 INFO L225 Difference]: With dead ends: 386 [2023-12-19 15:24:22,018 INFO L226 Difference]: Without dead ends: 206 [2023-12-19 15:24:22,019 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 [2023-12-19 15:24:22,020 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 88 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 15:24:22,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 572 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 15:24:22,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2023-12-19 15:24:22,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 179. [2023-12-19 15:24:22,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 146 states have (on average 1.2945205479452055) internal successors, (189), 147 states have internal predecessors, (189), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-19 15:24:22,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 249 transitions. [2023-12-19 15:24:22,036 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 249 transitions. Word has length 142 [2023-12-19 15:24:22,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:24:22,037 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 249 transitions. [2023-12-19 15:24:22,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 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) [2023-12-19 15:24:22,037 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 249 transitions. [2023-12-19 15:24:22,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-19 15:24:22,038 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:24:22,038 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] [2023-12-19 15:24:22,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 15:24:22,039 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:24:22,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:24:22,039 INFO L85 PathProgramCache]: Analyzing trace with hash 908373051, now seen corresponding path program 1 times [2023-12-19 15:24:22,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:24:22,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115068812] [2023-12-19 15:24:22,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:24:22,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:24:22,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:24,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:24:24,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:24,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:24:24,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:24,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:24:24,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:24,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:24:24,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:24,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:24:24,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:24,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:24:24,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:24,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:24:24,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:24,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:24:24,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:24,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:24:24,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:24,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:24:24,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:24,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:24:24,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:24,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:24:24,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:24,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:24:24,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:24,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:24:24,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:24,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:24:24,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:24,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:24:24,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:24,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:24:24,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:24,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:24:24,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:24,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 15:24:24,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:24,151 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-19 15:24:24,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:24:24,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115068812] [2023-12-19 15:24:24,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115068812] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:24:24,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:24:24,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-19 15:24:24,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833925495] [2023-12-19 15:24:24,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:24:24,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-19 15:24:24,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:24:24,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-19 15:24:24,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2023-12-19 15:24:24,153 INFO L87 Difference]: Start difference. First operand 179 states and 249 transitions. Second operand has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-19 15:24:28,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:24:28,644 INFO L93 Difference]: Finished difference Result 558 states and 767 transitions. [2023-12-19 15:24:28,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 15:24:28,645 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 142 [2023-12-19 15:24:28,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:24:28,647 INFO L225 Difference]: With dead ends: 558 [2023-12-19 15:24:28,647 INFO L226 Difference]: Without dead ends: 380 [2023-12-19 15:24:28,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=146, Invalid=504, Unknown=0, NotChecked=0, Total=650 [2023-12-19 15:24:28,648 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 611 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-19 15:24:28,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [611 Valid, 649 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-19 15:24:28,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2023-12-19 15:24:28,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 196. [2023-12-19 15:24:28,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 163 states have (on average 1.3067484662576687) internal successors, (213), 164 states have internal predecessors, (213), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-19 15:24:28,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 273 transitions. [2023-12-19 15:24:28,675 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 273 transitions. Word has length 142 [2023-12-19 15:24:28,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:24:28,675 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 273 transitions. [2023-12-19 15:24:28,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-19 15:24:28,676 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 273 transitions. [2023-12-19 15:24:28,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-19 15:24:28,677 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:24:28,677 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] [2023-12-19 15:24:28,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 15:24:28,680 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:24:28,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:24:28,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1919490301, now seen corresponding path program 1 times [2023-12-19 15:24:28,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:24:28,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449780276] [2023-12-19 15:24:28,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:24:28,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:24:28,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:29,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:24:29,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:29,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:24:29,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:29,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:24:29,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:29,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:24:29,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:29,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:24:29,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:29,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:24:29,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:29,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:24:29,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:29,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:24:29,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:29,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:24:29,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:29,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:24:29,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:29,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:24:29,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:29,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:24:29,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:29,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:24:29,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:29,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:24:29,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:29,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:24:29,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:29,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:24:29,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:29,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:24:29,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:29,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:24:29,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:29,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 15:24:29,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:29,579 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-19 15:24:29,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:24:29,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449780276] [2023-12-19 15:24:29,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449780276] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:24:29,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:24:29,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 15:24:29,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227448466] [2023-12-19 15:24:29,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:24:29,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 15:24:29,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:24:29,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 15:24:29,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-19 15:24:29,581 INFO L87 Difference]: Start difference. First operand 196 states and 273 transitions. Second operand has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-19 15:24:30,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:24:30,158 INFO L93 Difference]: Finished difference Result 472 states and 653 transitions. [2023-12-19 15:24:30,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 15:24:30,159 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 142 [2023-12-19 15:24:30,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:24:30,163 INFO L225 Difference]: With dead ends: 472 [2023-12-19 15:24:30,163 INFO L226 Difference]: Without dead ends: 277 [2023-12-19 15:24:30,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2023-12-19 15:24:30,164 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 294 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 15:24:30,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 858 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 15:24:30,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2023-12-19 15:24:30,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 199. [2023-12-19 15:24:30,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 166 states have (on average 1.3072289156626506) internal successors, (217), 167 states have internal predecessors, (217), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-19 15:24:30,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 277 transitions. [2023-12-19 15:24:30,196 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 277 transitions. Word has length 142 [2023-12-19 15:24:30,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:24:30,198 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 277 transitions. [2023-12-19 15:24:30,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-19 15:24:30,198 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 277 transitions. [2023-12-19 15:24:30,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-19 15:24:30,200 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:24:30,200 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] [2023-12-19 15:24:30,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 15:24:30,200 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:24:30,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:24:30,201 INFO L85 PathProgramCache]: Analyzing trace with hash 90724601, now seen corresponding path program 1 times [2023-12-19 15:24:30,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:24:30,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20122276] [2023-12-19 15:24:30,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:24:30,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:24:30,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:31,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:24:31,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:31,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:24:31,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:31,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:24:31,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:31,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:24:31,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:31,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:24:31,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:31,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:24:31,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:31,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:24:31,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:31,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:24:31,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:31,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:24:31,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:31,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:24:31,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:31,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:24:31,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:31,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:24:31,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:31,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:24:31,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:31,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:24:31,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:31,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:24:31,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:31,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:24:31,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:31,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:24:31,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:31,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:24:31,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:31,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 15:24:31,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:31,672 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-19 15:24:31,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:24:31,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20122276] [2023-12-19 15:24:31,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20122276] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:24:31,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:24:31,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-19 15:24:31,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450538398] [2023-12-19 15:24:31,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:24:31,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 15:24:31,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:24:31,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 15:24:31,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-12-19 15:24:31,675 INFO L87 Difference]: Start difference. First operand 199 states and 277 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) 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), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-19 15:24:32,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:24:32,991 INFO L93 Difference]: Finished difference Result 499 states and 688 transitions. [2023-12-19 15:24:32,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 15:24:32,992 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) 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), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 142 [2023-12-19 15:24:32,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:24:32,994 INFO L225 Difference]: With dead ends: 499 [2023-12-19 15:24:32,994 INFO L226 Difference]: Without dead ends: 301 [2023-12-19 15:24:32,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2023-12-19 15:24:32,995 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 243 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 15:24:32,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 717 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 15:24:32,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2023-12-19 15:24:33,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 193. [2023-12-19 15:24:33,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 160 states have (on average 1.3) internal successors, (208), 161 states have internal predecessors, (208), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-19 15:24:33,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 268 transitions. [2023-12-19 15:24:33,047 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 268 transitions. Word has length 142 [2023-12-19 15:24:33,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:24:33,047 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 268 transitions. [2023-12-19 15:24:33,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) 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), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-19 15:24:33,047 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 268 transitions. [2023-12-19 15:24:33,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-19 15:24:33,049 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:24:33,049 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] [2023-12-19 15:24:33,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 15:24:33,049 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:24:33,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:24:33,049 INFO L85 PathProgramCache]: Analyzing trace with hash 774359545, now seen corresponding path program 1 times [2023-12-19 15:24:33,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:24:33,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471490884] [2023-12-19 15:24:33,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:24:33,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:24:33,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:33,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:24:33,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:33,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:24:33,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:33,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:24:33,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:33,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:24:33,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:33,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:24:33,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:33,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:24:33,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:33,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:24:33,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:33,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:24:33,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:33,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:24:33,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:33,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:24:33,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:33,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:24:33,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:33,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:24:33,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:33,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:24:33,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:33,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:24:33,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:33,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:24:33,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:33,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:24:33,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:33,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:24:33,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:33,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:24:33,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:33,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 15:24:33,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:33,381 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-19 15:24:33,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:24:33,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471490884] [2023-12-19 15:24:33,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471490884] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:24:33,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:24:33,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 15:24:33,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627901130] [2023-12-19 15:24:33,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:24:33,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 15:24:33,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:24:33,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 15:24:33,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 15:24:33,383 INFO L87 Difference]: Start difference. First operand 193 states and 268 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) [2023-12-19 15:24:33,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:24:33,591 INFO L93 Difference]: Finished difference Result 462 states and 638 transitions. [2023-12-19 15:24:33,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 15:24:33,591 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 [2023-12-19 15:24:33,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:24:33,593 INFO L225 Difference]: With dead ends: 462 [2023-12-19 15:24:33,593 INFO L226 Difference]: Without dead ends: 270 [2023-12-19 15:24:33,594 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 [2023-12-19 15:24:33,594 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 166 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 15:24:33,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 968 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 15:24:33,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2023-12-19 15:24:33,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 191. [2023-12-19 15:24:33,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 158 states have (on average 1.3037974683544304) internal successors, (206), 159 states have internal predecessors, (206), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-19 15:24:33,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 266 transitions. [2023-12-19 15:24:33,622 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 266 transitions. Word has length 142 [2023-12-19 15:24:33,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:24:33,622 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 266 transitions. [2023-12-19 15:24:33,622 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) [2023-12-19 15:24:33,623 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 266 transitions. [2023-12-19 15:24:33,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-19 15:24:33,624 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:24:33,624 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] [2023-12-19 15:24:33,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 15:24:33,624 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:24:33,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:24:33,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1785476795, now seen corresponding path program 1 times [2023-12-19 15:24:33,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:24:33,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789754739] [2023-12-19 15:24:33,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:24:33,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:24:33,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:34,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:24:34,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:34,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:24:34,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:34,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:24:34,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:34,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:24:34,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:34,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:24:34,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:34,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:24:34,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:34,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:24:34,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:34,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:24:34,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:34,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:24:34,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:34,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:24:34,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:34,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:24:34,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:34,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:24:34,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:34,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:24:34,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:34,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:24:34,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:34,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:24:34,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:34,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:24:34,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:34,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:24:34,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:34,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:24:34,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:34,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 15:24:34,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:35,002 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-19 15:24:35,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:24:35,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789754739] [2023-12-19 15:24:35,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789754739] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:24:35,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:24:35,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-19 15:24:35,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612398989] [2023-12-19 15:24:35,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:24:35,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-19 15:24:35,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:24:35,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-19 15:24:35,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-19 15:24:35,005 INFO L87 Difference]: Start difference. First operand 191 states and 266 transitions. Second operand has 13 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-19 15:24:37,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:24:37,485 INFO L93 Difference]: Finished difference Result 521 states and 716 transitions. [2023-12-19 15:24:37,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 15:24:37,486 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 142 [2023-12-19 15:24:37,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:24:37,487 INFO L225 Difference]: With dead ends: 521 [2023-12-19 15:24:37,488 INFO L226 Difference]: Without dead ends: 331 [2023-12-19 15:24:37,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2023-12-19 15:24:37,489 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 412 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-19 15:24:37,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 782 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-19 15:24:37,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2023-12-19 15:24:37,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 191. [2023-12-19 15:24:37,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 158 states have (on average 1.2974683544303798) internal successors, (205), 159 states have internal predecessors, (205), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-19 15:24:37,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 265 transitions. [2023-12-19 15:24:37,521 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 265 transitions. Word has length 142 [2023-12-19 15:24:37,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:24:37,522 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 265 transitions. [2023-12-19 15:24:37,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-19 15:24:37,522 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 265 transitions. [2023-12-19 15:24:37,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-19 15:24:37,524 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:24:37,524 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] [2023-12-19 15:24:37,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 15:24:37,524 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:24:37,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:24:37,525 INFO L85 PathProgramCache]: Analyzing trace with hash 427387022, now seen corresponding path program 1 times [2023-12-19 15:24:37,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:24:37,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811136518] [2023-12-19 15:24:37,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:24:37,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:24:37,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:38,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:24:38,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:38,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:24:38,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:38,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:24:38,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:38,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:24:38,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:38,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:24:38,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:38,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:24:38,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:38,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:24:38,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:38,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:24:38,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:38,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:24:38,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:38,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:24:38,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:38,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:24:38,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:38,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:24:38,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:38,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:24:38,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:38,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:24:38,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:38,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:24:38,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:38,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:24:38,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:38,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:24:38,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:38,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:24:38,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:38,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 15:24:38,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:38,168 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-19 15:24:38,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:24:38,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811136518] [2023-12-19 15:24:38,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811136518] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:24:38,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:24:38,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 15:24:38,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917431885] [2023-12-19 15:24:38,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:24:38,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 15:24:38,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:24:38,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 15:24:38,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-12-19 15:24:38,170 INFO L87 Difference]: Start difference. First operand 191 states and 265 transitions. Second operand has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 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) [2023-12-19 15:24:39,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:24:39,043 INFO L93 Difference]: Finished difference Result 525 states and 724 transitions. [2023-12-19 15:24:39,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 15:24:39,044 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 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 [2023-12-19 15:24:39,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:24:39,045 INFO L225 Difference]: With dead ends: 525 [2023-12-19 15:24:39,045 INFO L226 Difference]: Without dead ends: 335 [2023-12-19 15:24:39,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2023-12-19 15:24:39,047 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 315 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 877 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 15:24:39,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 1053 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 877 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 15:24:39,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2023-12-19 15:24:39,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 209. [2023-12-19 15:24:39,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 176 states have (on average 1.3068181818181819) internal successors, (230), 177 states have internal predecessors, (230), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-19 15:24:39,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 290 transitions. [2023-12-19 15:24:39,080 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 290 transitions. Word has length 143 [2023-12-19 15:24:39,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:24:39,080 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 290 transitions. [2023-12-19 15:24:39,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 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) [2023-12-19 15:24:39,080 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 290 transitions. [2023-12-19 15:24:39,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-19 15:24:39,083 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:24:39,083 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] [2023-12-19 15:24:39,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 15:24:39,083 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:24:39,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:24:39,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1296919881, now seen corresponding path program 1 times [2023-12-19 15:24:39,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:24:39,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481509488] [2023-12-19 15:24:39,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:24:39,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:24:39,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:24:39,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:24:39,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:24:39,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:24:39,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:24:39,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:24:39,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:24:39,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:24:39,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:24:39,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:24:39,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:24:39,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:24:39,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:24:39,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:24:39,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:24:39,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:24:39,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:24:39,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:24:39,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 15:24:39,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,332 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-19 15:24:39,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:24:39,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481509488] [2023-12-19 15:24:39,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481509488] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:24:39,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:24:39,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 15:24:39,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681999468] [2023-12-19 15:24:39,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:24:39,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 15:24:39,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:24:39,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 15:24:39,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 15:24:39,334 INFO L87 Difference]: Start difference. First operand 209 states and 290 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) [2023-12-19 15:24:39,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:24:39,422 INFO L93 Difference]: Finished difference Result 497 states and 685 transitions. [2023-12-19 15:24:39,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 15:24:39,423 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 [2023-12-19 15:24:39,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:24:39,424 INFO L225 Difference]: With dead ends: 497 [2023-12-19 15:24:39,424 INFO L226 Difference]: Without dead ends: 289 [2023-12-19 15:24:39,426 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 [2023-12-19 15:24:39,427 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 [2023-12-19 15:24:39,427 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] [2023-12-19 15:24:39,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-12-19 15:24:39,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 215. [2023-12-19 15:24:39,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 182 states have (on average 1.3021978021978022) internal successors, (237), 183 states have internal predecessors, (237), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-19 15:24:39,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 297 transitions. [2023-12-19 15:24:39,460 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 297 transitions. Word has length 143 [2023-12-19 15:24:39,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:24:39,461 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 297 transitions. [2023-12-19 15:24:39,461 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) [2023-12-19 15:24:39,461 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 297 transitions. [2023-12-19 15:24:39,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-19 15:24:39,463 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:24:39,463 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] [2023-12-19 15:24:39,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 15:24:39,464 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:24:39,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:24:39,464 INFO L85 PathProgramCache]: Analyzing trace with hash 765088973, now seen corresponding path program 1 times [2023-12-19 15:24:39,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:24:39,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928651076] [2023-12-19 15:24:39,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:24:39,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:24:39,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:24:39,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:24:39,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:24:39,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:24:39,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:24:39,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:24:39,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:24:39,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:24:39,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:24:39,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:24:39,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:24:39,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:24:39,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:24:39,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:24:39,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:24:39,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:24:39,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:24:39,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:24:39,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 15:24:39,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,638 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-19 15:24:39,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:24:39,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928651076] [2023-12-19 15:24:39,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928651076] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:24:39,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:24:39,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 15:24:39,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111954174] [2023-12-19 15:24:39,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:24:39,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 15:24:39,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:24:39,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 15:24:39,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 15:24:39,641 INFO L87 Difference]: Start difference. First operand 215 states and 297 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) [2023-12-19 15:24:39,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:24:39,724 INFO L93 Difference]: Finished difference Result 473 states and 649 transitions. [2023-12-19 15:24:39,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 15:24:39,724 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 [2023-12-19 15:24:39,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:24:39,726 INFO L225 Difference]: With dead ends: 473 [2023-12-19 15:24:39,726 INFO L226 Difference]: Without dead ends: 259 [2023-12-19 15:24:39,726 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 [2023-12-19 15:24:39,727 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 [2023-12-19 15:24:39,727 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] [2023-12-19 15:24:39,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2023-12-19 15:24:39,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 215. [2023-12-19 15:24:39,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 182 states have (on average 1.2967032967032968) internal successors, (236), 183 states have internal predecessors, (236), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-19 15:24:39,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 296 transitions. [2023-12-19 15:24:39,762 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 296 transitions. Word has length 143 [2023-12-19 15:24:39,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:24:39,763 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 296 transitions. [2023-12-19 15:24:39,763 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) [2023-12-19 15:24:39,763 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 296 transitions. [2023-12-19 15:24:39,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-19 15:24:39,765 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:24:39,765 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] [2023-12-19 15:24:39,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 15:24:39,765 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:24:39,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:24:39,765 INFO L85 PathProgramCache]: Analyzing trace with hash -255979381, now seen corresponding path program 1 times [2023-12-19 15:24:39,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:24:39,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500469962] [2023-12-19 15:24:39,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:24:39,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:24:39,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:24:39,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:24:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:24:39,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:24:39,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:24:39,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:24:39,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:24:39,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:24:39,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:24:39,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:24:39,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:24:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:24:39,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:24:39,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:24:39,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:24:39,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:24:39,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:24:39,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:24:39,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 15:24:39,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:39,974 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-19 15:24:39,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:24:39,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500469962] [2023-12-19 15:24:39,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500469962] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:24:39,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:24:39,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 15:24:39,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622967743] [2023-12-19 15:24:39,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:24:39,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 15:24:39,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:24:39,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 15:24:39,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 15:24:39,978 INFO L87 Difference]: Start difference. First operand 215 states and 296 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) [2023-12-19 15:24:40,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:24:40,068 INFO L93 Difference]: Finished difference Result 447 states and 613 transitions. [2023-12-19 15:24:40,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 15:24:40,069 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 [2023-12-19 15:24:40,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:24:40,070 INFO L225 Difference]: With dead ends: 447 [2023-12-19 15:24:40,070 INFO L226 Difference]: Without dead ends: 233 [2023-12-19 15:24:40,071 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 [2023-12-19 15:24:40,071 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 60 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 15:24:40,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 569 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 15:24:40,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2023-12-19 15:24:40,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 209. [2023-12-19 15:24:40,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 176 states have (on average 1.2897727272727273) internal successors, (227), 177 states have internal predecessors, (227), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-19 15:24:40,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 287 transitions. [2023-12-19 15:24:40,113 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 287 transitions. Word has length 143 [2023-12-19 15:24:40,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:24:40,114 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 287 transitions. [2023-12-19 15:24:40,114 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) [2023-12-19 15:24:40,114 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 287 transitions. [2023-12-19 15:24:40,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-19 15:24:40,116 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:24:40,116 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] [2023-12-19 15:24:40,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 15:24:40,116 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:24:40,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:24:40,116 INFO L85 PathProgramCache]: Analyzing trace with hash -612589333, now seen corresponding path program 1 times [2023-12-19 15:24:40,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:24:40,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016724979] [2023-12-19 15:24:40,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:24:40,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:24:40,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:41,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:24:41,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:41,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:24:41,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:41,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:24:41,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:41,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:24:41,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:41,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:24:41,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:41,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:24:41,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:41,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:24:41,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:41,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:24:41,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:41,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:24:41,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:41,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:24:41,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:41,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:24:41,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:41,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:24:41,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:41,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:24:41,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:41,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:24:41,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:41,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:24:41,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:41,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:24:41,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:41,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:24:41,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:41,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:24:41,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:41,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 15:24:41,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:41,132 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-19 15:24:41,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:24:41,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016724979] [2023-12-19 15:24:41,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016724979] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:24:41,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:24:41,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 15:24:41,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150351962] [2023-12-19 15:24:41,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:24:41,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 15:24:41,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:24:41,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 15:24:41,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-19 15:24:41,136 INFO L87 Difference]: Start difference. First operand 209 states and 287 transitions. Second operand has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 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) [2023-12-19 15:24:42,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:24:42,530 INFO L93 Difference]: Finished difference Result 722 states and 987 transitions. [2023-12-19 15:24:42,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-19 15:24:42,531 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 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 144 [2023-12-19 15:24:42,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:24:42,533 INFO L225 Difference]: With dead ends: 722 [2023-12-19 15:24:42,533 INFO L226 Difference]: Without dead ends: 514 [2023-12-19 15:24:42,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=190, Invalid=566, Unknown=0, NotChecked=0, Total=756 [2023-12-19 15:24:42,534 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 575 mSDsluCounter, 1135 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 1370 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 15:24:42,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [575 Valid, 1370 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 891 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 15:24:42,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2023-12-19 15:24:42,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 259. [2023-12-19 15:24:42,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 226 states have (on average 1.3185840707964602) internal successors, (298), 227 states have internal predecessors, (298), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-19 15:24:42,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 358 transitions. [2023-12-19 15:24:42,568 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 358 transitions. Word has length 144 [2023-12-19 15:24:42,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:24:42,568 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 358 transitions. [2023-12-19 15:24:42,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 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) [2023-12-19 15:24:42,569 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 358 transitions. [2023-12-19 15:24:42,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-19 15:24:42,570 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:24:42,570 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] [2023-12-19 15:24:42,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 15:24:42,570 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:24:42,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:24:42,571 INFO L85 PathProgramCache]: Analyzing trace with hash 288196809, now seen corresponding path program 1 times [2023-12-19 15:24:42,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:24:42,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78803822] [2023-12-19 15:24:42,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:24:42,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:24:42,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:43,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:24:43,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:43,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:24:43,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:43,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:24:43,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:43,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:24:43,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:43,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:24:43,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:43,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:24:43,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:43,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:24:43,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:43,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:24:43,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:43,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:24:43,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:43,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:24:43,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:43,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:24:43,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:43,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:24:43,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:43,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:24:43,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:43,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:24:43,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:43,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:24:43,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:43,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:24:43,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:43,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:24:43,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:43,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:24:43,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:43,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 15:24:43,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:43,705 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-19 15:24:43,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:24:43,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78803822] [2023-12-19 15:24:43,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78803822] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:24:43,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:24:43,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-19 15:24:43,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106615647] [2023-12-19 15:24:43,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:24:43,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-19 15:24:43,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:24:43,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-19 15:24:43,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-12-19 15:24:43,709 INFO L87 Difference]: Start difference. First operand 259 states and 358 transitions. Second operand has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-19 15:24:45,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:24:45,051 INFO L93 Difference]: Finished difference Result 728 states and 996 transitions. [2023-12-19 15:24:45,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 15:24:45,052 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 145 [2023-12-19 15:24:45,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:24:45,054 INFO L225 Difference]: With dead ends: 728 [2023-12-19 15:24:45,054 INFO L226 Difference]: Without dead ends: 470 [2023-12-19 15:24:45,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=127, Invalid=379, Unknown=0, NotChecked=0, Total=506 [2023-12-19 15:24:45,055 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 470 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 1017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 15:24:45,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 806 Invalid, 1017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 15:24:45,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2023-12-19 15:24:45,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 284. [2023-12-19 15:24:45,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 251 states have (on average 1.3266932270916334) internal successors, (333), 252 states have internal predecessors, (333), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-19 15:24:45,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 393 transitions. [2023-12-19 15:24:45,091 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 393 transitions. Word has length 145 [2023-12-19 15:24:45,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:24:45,091 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 393 transitions. [2023-12-19 15:24:45,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-19 15:24:45,091 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 393 transitions. [2023-12-19 15:24:45,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-19 15:24:45,093 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:24:45,093 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] [2023-12-19 15:24:45,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 15:24:45,093 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:24:45,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:24:45,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1300151093, now seen corresponding path program 1 times [2023-12-19 15:24:45,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:24:45,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818189217] [2023-12-19 15:24:45,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:24:45,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:24:45,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:45,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:24:45,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:45,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:24:45,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:45,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:24:45,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:45,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:24:45,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:45,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:24:45,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:45,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:24:45,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:45,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:24:45,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:45,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:24:45,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:45,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:24:45,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:45,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:24:45,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:45,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:24:45,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:45,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:24:45,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:45,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:24:45,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:45,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:24:45,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:45,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:24:45,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:45,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:24:45,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:45,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:24:45,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:45,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:24:45,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:45,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 15:24:45,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:45,414 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-19 15:24:45,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:24:45,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818189217] [2023-12-19 15:24:45,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818189217] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:24:45,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:24:45,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 15:24:45,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609400266] [2023-12-19 15:24:45,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:24:45,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 15:24:45,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:24:45,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 15:24:45,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 15:24:45,415 INFO L87 Difference]: Start difference. First operand 284 states and 393 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) [2023-12-19 15:24:45,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:24:45,767 INFO L93 Difference]: Finished difference Result 777 states and 1066 transitions. [2023-12-19 15:24:45,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 15:24:45,769 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 [2023-12-19 15:24:45,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:24:45,771 INFO L225 Difference]: With dead ends: 777 [2023-12-19 15:24:45,771 INFO L226 Difference]: Without dead ends: 494 [2023-12-19 15:24:45,772 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 [2023-12-19 15:24:45,772 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 163 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 15:24:45,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 504 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 15:24:45,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2023-12-19 15:24:45,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 294. [2023-12-19 15:24:45,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 261 states have (on average 1.3295019157088122) internal successors, (347), 262 states have internal predecessors, (347), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-19 15:24:45,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 407 transitions. [2023-12-19 15:24:45,809 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 407 transitions. Word has length 145 [2023-12-19 15:24:45,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:24:45,810 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 407 transitions. [2023-12-19 15:24:45,810 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) [2023-12-19 15:24:45,810 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 407 transitions. [2023-12-19 15:24:45,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-19 15:24:45,811 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:24:45,811 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] [2023-12-19 15:24:45,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 15:24:45,812 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:24:45,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:24:45,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1983698953, now seen corresponding path program 1 times [2023-12-19 15:24:45,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:24:45,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907196271] [2023-12-19 15:24:45,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:24:45,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:24:45,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:46,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:24:46,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:46,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:24:46,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:46,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:24:46,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:46,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:24:46,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:46,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:24:46,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:46,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:24:46,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:46,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:24:46,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:46,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:24:46,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:46,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:24:46,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:46,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:24:46,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:46,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:24:46,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:46,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:24:46,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:46,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:24:46,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:46,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:24:46,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:46,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:24:46,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:46,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:24:46,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:46,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:24:46,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:46,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:24:46,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:46,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 15:24:46,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:46,810 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-19 15:24:46,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:24:46,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907196271] [2023-12-19 15:24:46,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907196271] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:24:46,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:24:46,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-19 15:24:46,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326966354] [2023-12-19 15:24:46,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:24:46,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-19 15:24:46,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:24:46,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-19 15:24:46,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-12-19 15:24:46,812 INFO L87 Difference]: Start difference. First operand 294 states and 407 transitions. Second operand has 16 states, 15 states have (on average 3.533333333333333) internal successors, (53), 16 states have internal predecessors, (53), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-19 15:24:48,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:24:48,018 INFO L93 Difference]: Finished difference Result 687 states and 944 transitions. [2023-12-19 15:24:48,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 15:24:48,019 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.533333333333333) internal successors, (53), 16 states have internal predecessors, (53), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 145 [2023-12-19 15:24:48,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:24:48,021 INFO L225 Difference]: With dead ends: 687 [2023-12-19 15:24:48,021 INFO L226 Difference]: Without dead ends: 394 [2023-12-19 15:24:48,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650 [2023-12-19 15:24:48,022 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 497 mSDsluCounter, 921 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 1089 SdHoareTripleChecker+Invalid, 1295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 15:24:48,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [497 Valid, 1089 Invalid, 1295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 15:24:48,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2023-12-19 15:24:48,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 294. [2023-12-19 15:24:48,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 261 states have (on average 1.3295019157088122) internal successors, (347), 262 states have internal predecessors, (347), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-19 15:24:48,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 407 transitions. [2023-12-19 15:24:48,059 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 407 transitions. Word has length 145 [2023-12-19 15:24:48,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:24:48,059 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 407 transitions. [2023-12-19 15:24:48,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.533333333333333) internal successors, (53), 16 states have internal predecessors, (53), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-19 15:24:48,060 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 407 transitions. [2023-12-19 15:24:48,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-19 15:24:48,061 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:24:48,061 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] [2023-12-19 15:24:48,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 15:24:48,061 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:24:48,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:24:48,061 INFO L85 PathProgramCache]: Analyzing trace with hash 110204309, now seen corresponding path program 1 times [2023-12-19 15:24:48,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:24:48,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581993883] [2023-12-19 15:24:48,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:24:48,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:24:48,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:48,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:24:48,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:48,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:24:48,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:48,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:24:48,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:48,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:24:48,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:48,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:24:48,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:48,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:24:48,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:48,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:24:48,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:48,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:24:48,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:48,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:24:48,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:48,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:24:48,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:48,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:24:48,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:48,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:24:48,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:48,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:24:48,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:48,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:24:48,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:48,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:24:48,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:48,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:24:48,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:48,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:24:48,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:48,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:24:48,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:48,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 15:24:48,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:48,404 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-19 15:24:48,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:24:48,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581993883] [2023-12-19 15:24:48,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581993883] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:24:48,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:24:48,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 15:24:48,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574390495] [2023-12-19 15:24:48,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:24:48,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 15:24:48,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:24:48,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 15:24:48,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-19 15:24:48,406 INFO L87 Difference]: Start difference. First operand 294 states and 407 transitions. Second operand has 8 states, 7 states have (on average 7.571428571428571) 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), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-19 15:24:48,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:24:48,738 INFO L93 Difference]: Finished difference Result 590 states and 817 transitions. [2023-12-19 15:24:48,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 15:24:48,748 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.571428571428571) 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), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 145 [2023-12-19 15:24:48,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:24:48,750 INFO L225 Difference]: With dead ends: 590 [2023-12-19 15:24:48,750 INFO L226 Difference]: Without dead ends: 297 [2023-12-19 15:24:48,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-12-19 15:24:48,753 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 211 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 15:24:48,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 309 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 15:24:48,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2023-12-19 15:24:48,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 295. [2023-12-19 15:24:48,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 262 states have (on average 1.3282442748091603) internal successors, (348), 263 states have internal predecessors, (348), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-19 15:24:48,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 408 transitions. [2023-12-19 15:24:48,790 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 408 transitions. Word has length 145 [2023-12-19 15:24:48,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:24:48,790 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 408 transitions. [2023-12-19 15:24:48,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.571428571428571) 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), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-19 15:24:48,791 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 408 transitions. [2023-12-19 15:24:48,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-19 15:24:48,792 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:24:48,792 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] [2023-12-19 15:24:48,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-19 15:24:48,792 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:24:48,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:24:48,792 INFO L85 PathProgramCache]: Analyzing trace with hash -30344301, now seen corresponding path program 1 times [2023-12-19 15:24:48,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:24:48,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589106132] [2023-12-19 15:24:48,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:24:48,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:24:48,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:50,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:24:50,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:50,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:24:50,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:50,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:24:50,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:50,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:24:50,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:50,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:24:50,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:50,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:24:50,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:50,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:24:50,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:50,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:24:50,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:50,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:24:50,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:50,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:24:50,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:50,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:24:50,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:50,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:24:50,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:50,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:24:50,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:50,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:24:50,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:50,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:24:50,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:50,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:24:50,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:50,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:24:50,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:50,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:24:50,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:50,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 15:24:50,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:50,106 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-19 15:24:50,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:24:50,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589106132] [2023-12-19 15:24:50,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589106132] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:24:50,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:24:50,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-19 15:24:50,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806602393] [2023-12-19 15:24:50,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:24:50,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-19 15:24:50,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:24:50,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-19 15:24:50,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-12-19 15:24:50,108 INFO L87 Difference]: Start difference. First operand 295 states and 408 transitions. Second operand has 16 states, 15 states have (on average 3.533333333333333) internal successors, (53), 16 states have internal predecessors, (53), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-19 15:24:51,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:24:51,990 INFO L93 Difference]: Finished difference Result 1034 states and 1417 transitions. [2023-12-19 15:24:51,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-19 15:24:51,991 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.533333333333333) internal successors, (53), 16 states have internal predecessors, (53), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 145 [2023-12-19 15:24:51,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:24:51,993 INFO L225 Difference]: With dead ends: 1034 [2023-12-19 15:24:51,993 INFO L226 Difference]: Without dead ends: 740 [2023-12-19 15:24:51,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=177, Invalid=693, Unknown=0, NotChecked=0, Total=870 [2023-12-19 15:24:51,995 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 517 mSDsluCounter, 1098 mSDsCounter, 0 mSdLazyCounter, 1390 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 1278 SdHoareTripleChecker+Invalid, 1482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 15:24:51,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [517 Valid, 1278 Invalid, 1482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1390 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 15:24:51,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2023-12-19 15:24:52,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 326. [2023-12-19 15:24:52,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 293 states have (on average 1.3378839590443685) internal successors, (392), 294 states have internal predecessors, (392), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-19 15:24:52,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 452 transitions. [2023-12-19 15:24:52,038 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 452 transitions. Word has length 145 [2023-12-19 15:24:52,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:24:52,038 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 452 transitions. [2023-12-19 15:24:52,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.533333333333333) internal successors, (53), 16 states have internal predecessors, (53), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-19 15:24:52,038 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 452 transitions. [2023-12-19 15:24:52,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-19 15:24:52,039 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:24:52,040 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] [2023-12-19 15:24:52,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-19 15:24:52,040 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:24:52,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:24:52,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1310207979, now seen corresponding path program 1 times [2023-12-19 15:24:52,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:24:52,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261489483] [2023-12-19 15:24:52,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:24:52,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:24:52,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:52,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:24:52,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:52,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:24:52,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:52,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:24:52,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:52,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:24:52,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:52,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:24:52,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:52,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:24:52,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:52,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:24:52,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:52,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:24:52,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:52,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:24:52,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:52,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:24:52,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:52,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:24:52,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:52,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:24:52,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:52,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:24:52,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:52,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:24:52,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:52,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:24:52,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:52,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:24:52,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:52,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:24:52,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:52,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:24:52,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:52,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 15:24:52,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:52,767 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-19 15:24:52,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:24:52,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261489483] [2023-12-19 15:24:52,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261489483] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:24:52,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:24:52,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 15:24:52,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925735291] [2023-12-19 15:24:52,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:24:52,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 15:24:52,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:24:52,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 15:24:52,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-12-19 15:24:52,771 INFO L87 Difference]: Start difference. First operand 326 states and 452 transitions. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-19 15:24:53,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:24:53,496 INFO L93 Difference]: Finished difference Result 765 states and 1051 transitions. [2023-12-19 15:24:53,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 15:24:53,497 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 145 [2023-12-19 15:24:53,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:24:53,499 INFO L225 Difference]: With dead ends: 765 [2023-12-19 15:24:53,499 INFO L226 Difference]: Without dead ends: 440 [2023-12-19 15:24:53,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-12-19 15:24:53,500 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 399 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 15:24:53,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 570 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 15:24:53,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2023-12-19 15:24:53,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 329. [2023-12-19 15:24:53,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 296 states have (on average 1.3175675675675675) internal successors, (390), 297 states have internal predecessors, (390), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-19 15:24:53,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 450 transitions. [2023-12-19 15:24:53,543 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 450 transitions. Word has length 145 [2023-12-19 15:24:53,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:24:53,544 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 450 transitions. [2023-12-19 15:24:53,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-19 15:24:53,544 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 450 transitions. [2023-12-19 15:24:53,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-19 15:24:53,545 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:24:53,545 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] [2023-12-19 15:24:53,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-19 15:24:53,545 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:24:53,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:24:53,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1719288043, now seen corresponding path program 1 times [2023-12-19 15:24:53,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:24:53,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864254891] [2023-12-19 15:24:53,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:24:53,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:24:53,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:55,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:24:55,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:55,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:24:55,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:55,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:24:55,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:55,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:24:55,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:55,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:24:55,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:55,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:24:55,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:55,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:24:55,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:55,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:24:55,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:55,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:24:55,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:55,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:24:55,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:55,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:24:55,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:55,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:24:55,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:55,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:24:55,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:55,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:24:55,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:55,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:24:55,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:55,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:24:55,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:55,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:24:55,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:55,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:24:55,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:55,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 15:24:55,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:55,355 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-19 15:24:55,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:24:55,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864254891] [2023-12-19 15:24:55,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864254891] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:24:55,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:24:55,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-12-19 15:24:55,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242610556] [2023-12-19 15:24:55,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:24:55,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-19 15:24:55,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:24:55,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-19 15:24:55,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2023-12-19 15:24:55,357 INFO L87 Difference]: Start difference. First operand 329 states and 450 transitions. Second operand has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-19 15:24:58,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:24:58,436 INFO L93 Difference]: Finished difference Result 777 states and 1060 transitions. [2023-12-19 15:24:58,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 15:24:58,437 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 145 [2023-12-19 15:24:58,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:24:58,439 INFO L225 Difference]: With dead ends: 777 [2023-12-19 15:24:58,439 INFO L226 Difference]: Without dead ends: 449 [2023-12-19 15:24:58,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=167, Invalid=589, Unknown=0, NotChecked=0, Total=756 [2023-12-19 15:24:58,441 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 418 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 1286 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 1351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-19 15:24:58,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 1079 Invalid, 1351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1286 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-19 15:24:58,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2023-12-19 15:24:58,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 319. [2023-12-19 15:24:58,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 286 states have (on average 1.3181818181818181) internal successors, (377), 287 states have internal predecessors, (377), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-19 15:24:58,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 437 transitions. [2023-12-19 15:24:58,488 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 437 transitions. Word has length 145 [2023-12-19 15:24:58,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:24:58,488 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 437 transitions. [2023-12-19 15:24:58,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-19 15:24:58,489 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 437 transitions. [2023-12-19 15:24:58,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-19 15:24:58,490 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:24:58,490 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] [2023-12-19 15:24:58,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-19 15:24:58,490 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:24:58,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:24:58,490 INFO L85 PathProgramCache]: Analyzing trace with hash -221276281, now seen corresponding path program 1 times [2023-12-19 15:24:58,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:24:58,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795079908] [2023-12-19 15:24:58,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:24:58,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:24:58,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:59,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:24:59,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:59,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:24:59,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:59,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:24:59,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:59,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:24:59,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:59,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:24:59,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:59,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:24:59,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:59,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:24:59,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:59,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:24:59,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:59,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:24:59,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:59,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:24:59,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:59,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:24:59,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:59,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:24:59,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:59,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:24:59,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:59,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:24:59,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:59,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:24:59,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:59,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:24:59,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:59,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:24:59,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:59,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:24:59,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:59,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 15:24:59,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:24:59,273 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-19 15:24:59,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:24:59,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795079908] [2023-12-19 15:24:59,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795079908] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:24:59,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:24:59,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-19 15:24:59,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120829479] [2023-12-19 15:24:59,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:24:59,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 15:24:59,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:24:59,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 15:24:59,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-19 15:24:59,275 INFO L87 Difference]: Start difference. First operand 319 states and 437 transitions. Second operand has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 12 states have internal predecessors, (53), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-19 15:25:00,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:25:00,099 INFO L93 Difference]: Finished difference Result 765 states and 1040 transitions. [2023-12-19 15:25:00,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 15:25:00,100 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 12 states have internal predecessors, (53), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 145 [2023-12-19 15:25:00,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:25:00,101 INFO L225 Difference]: With dead ends: 765 [2023-12-19 15:25:00,102 INFO L226 Difference]: Without dead ends: 447 [2023-12-19 15:25:00,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2023-12-19 15:25:00,102 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 410 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 15:25:00,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 554 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 15:25:00,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2023-12-19 15:25:00,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 262. [2023-12-19 15:25:00,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 240 states have (on average 1.3208333333333333) internal successors, (317), 240 states have internal predecessors, (317), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-19 15:25:00,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 355 transitions. [2023-12-19 15:25:00,155 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 355 transitions. Word has length 145 [2023-12-19 15:25:00,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:25:00,155 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 355 transitions. [2023-12-19 15:25:00,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 12 states have internal predecessors, (53), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-19 15:25:00,156 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 355 transitions. [2023-12-19 15:25:00,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-19 15:25:00,157 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:25:00,157 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] [2023-12-19 15:25:00,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-19 15:25:00,157 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:25:00,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:25:00,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1232393531, now seen corresponding path program 1 times [2023-12-19 15:25:00,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:25:00,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992986724] [2023-12-19 15:25:00,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:25:00,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:25:00,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:01,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:25:01,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:01,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:25:01,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:01,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:25:01,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:01,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:25:01,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:01,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:25:01,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:01,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:25:01,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:01,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:25:01,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:01,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:25:01,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:01,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:25:01,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:01,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:25:01,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:01,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:25:01,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:01,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:25:01,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:01,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:25:01,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:01,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:25:01,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:01,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:25:01,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:01,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:25:01,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:01,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:25:01,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:01,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:25:01,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:01,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 15:25:01,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:01,086 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-19 15:25:01,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:25:01,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992986724] [2023-12-19 15:25:01,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992986724] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:25:01,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:25:01,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-19 15:25:01,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131012226] [2023-12-19 15:25:01,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:25:01,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 15:25:01,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:25:01,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 15:25:01,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-19 15:25:01,088 INFO L87 Difference]: Start difference. First operand 262 states and 355 transitions. Second operand has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 12 states have internal predecessors, (53), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-19 15:25:01,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:25:01,922 INFO L93 Difference]: Finished difference Result 624 states and 840 transitions. [2023-12-19 15:25:01,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 15:25:01,922 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 12 states have internal predecessors, (53), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 145 [2023-12-19 15:25:01,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:25:01,924 INFO L225 Difference]: With dead ends: 624 [2023-12-19 15:25:01,924 INFO L226 Difference]: Without dead ends: 363 [2023-12-19 15:25:01,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2023-12-19 15:25:01,925 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 419 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 15:25:01,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 644 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 15:25:01,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2023-12-19 15:25:01,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 262. [2023-12-19 15:25:01,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 240 states have (on average 1.3041666666666667) internal successors, (313), 240 states have internal predecessors, (313), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-19 15:25:01,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 351 transitions. [2023-12-19 15:25:01,964 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 351 transitions. Word has length 145 [2023-12-19 15:25:01,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:25:01,964 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 351 transitions. [2023-12-19 15:25:01,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 12 states have internal predecessors, (53), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-19 15:25:01,965 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 351 transitions. [2023-12-19 15:25:01,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-19 15:25:01,965 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:25:01,966 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] [2023-12-19 15:25:01,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-19 15:25:01,966 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:25:01,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:25:01,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1474225863, now seen corresponding path program 1 times [2023-12-19 15:25:01,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:25:01,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38463131] [2023-12-19 15:25:01,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:25:01,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:25:01,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:02,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:25:02,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:02,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:25:02,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:02,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:25:02,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:02,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:25:02,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:02,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:25:02,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:02,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:25:02,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:02,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:25:02,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:02,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:25:02,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:02,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:25:02,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:02,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:25:02,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:02,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:25:02,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:02,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:25:02,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:02,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:25:02,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:02,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:25:02,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:02,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:25:02,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:02,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:25:02,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:02,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:25:02,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:02,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:25:02,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:02,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 15:25:02,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:02,373 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-19 15:25:02,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:25:02,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38463131] [2023-12-19 15:25:02,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38463131] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:25:02,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:25:02,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 15:25:02,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893709258] [2023-12-19 15:25:02,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:25:02,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 15:25:02,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:25:02,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 15:25:02,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-19 15:25:02,374 INFO L87 Difference]: Start difference. First operand 262 states and 351 transitions. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 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) [2023-12-19 15:25:03,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:25:03,052 INFO L93 Difference]: Finished difference Result 618 states and 824 transitions. [2023-12-19 15:25:03,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 15:25:03,052 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 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 [2023-12-19 15:25:03,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:25:03,053 INFO L225 Difference]: With dead ends: 618 [2023-12-19 15:25:03,053 INFO L226 Difference]: Without dead ends: 357 [2023-12-19 15:25:03,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2023-12-19 15:25:03,055 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 252 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 15:25:03,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 812 Invalid, 752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 750 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 15:25:03,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2023-12-19 15:25:03,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 258. [2023-12-19 15:25:03,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 236 states have (on average 1.3008474576271187) internal successors, (307), 236 states have internal predecessors, (307), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-19 15:25:03,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 345 transitions. [2023-12-19 15:25:03,091 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 345 transitions. Word has length 145 [2023-12-19 15:25:03,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:25:03,092 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 345 transitions. [2023-12-19 15:25:03,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 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) [2023-12-19 15:25:03,092 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 345 transitions. [2023-12-19 15:25:03,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-19 15:25:03,093 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:25:03,093 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] [2023-12-19 15:25:03,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-19 15:25:03,093 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:25:03,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:25:03,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1679132459, now seen corresponding path program 1 times [2023-12-19 15:25:03,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:25:03,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284376874] [2023-12-19 15:25:03,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:25:03,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:25:03,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:03,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:25:03,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:03,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:25:03,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:03,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:25:03,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:03,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:25:03,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:03,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:25:03,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:03,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:25:03,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:03,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:25:03,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:03,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:25:03,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:03,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:25:03,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:03,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:25:03,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:03,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:25:03,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:03,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:25:03,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:03,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:25:03,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:03,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:25:03,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:03,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:25:03,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:03,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:25:03,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:03,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:25:03,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:03,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:25:03,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:03,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 15:25:03,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:03,461 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-19 15:25:03,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:25:03,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284376874] [2023-12-19 15:25:03,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284376874] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:25:03,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:25:03,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 15:25:03,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57667534] [2023-12-19 15:25:03,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:25:03,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 15:25:03,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:25:03,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 15:25:03,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-12-19 15:25:03,463 INFO L87 Difference]: Start difference. First operand 258 states and 345 transitions. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 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) [2023-12-19 15:25:03,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:25:03,925 INFO L93 Difference]: Finished difference Result 578 states and 772 transitions. [2023-12-19 15:25:03,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 15:25:03,926 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 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 [2023-12-19 15:25:03,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:25:03,927 INFO L225 Difference]: With dead ends: 578 [2023-12-19 15:25:03,927 INFO L226 Difference]: Without dead ends: 321 [2023-12-19 15:25:03,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-12-19 15:25:03,928 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 256 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 15:25:03,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 505 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 15:25:03,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2023-12-19 15:25:03,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 258. [2023-12-19 15:25:03,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 236 states have (on average 1.2923728813559323) internal successors, (305), 236 states have internal predecessors, (305), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-19 15:25:03,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 343 transitions. [2023-12-19 15:25:03,971 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 343 transitions. Word has length 145 [2023-12-19 15:25:03,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:25:03,972 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 343 transitions. [2023-12-19 15:25:03,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 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) [2023-12-19 15:25:03,972 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 343 transitions. [2023-12-19 15:25:03,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-19 15:25:03,973 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:25:03,973 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] [2023-12-19 15:25:03,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-19 15:25:03,973 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:25:03,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:25:03,974 INFO L85 PathProgramCache]: Analyzing trace with hash -270898736, now seen corresponding path program 1 times [2023-12-19 15:25:03,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:25:03,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236150443] [2023-12-19 15:25:03,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:25:03,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:25:04,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:04,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:25:04,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:04,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:25:04,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:04,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:25:04,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:04,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:25:04,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:04,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:25:04,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:04,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:25:04,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:04,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:25:04,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:04,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:25:04,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:04,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:25:04,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:04,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:25:04,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:04,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:25:04,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:04,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:25:04,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:04,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:25:04,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:04,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:25:04,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:04,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:25:04,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:04,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:25:04,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:04,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:25:04,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:04,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:25:04,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:04,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 15:25:04,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:04,872 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-19 15:25:04,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:25:04,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236150443] [2023-12-19 15:25:04,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236150443] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:25:04,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:25:04,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-19 15:25:04,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298331390] [2023-12-19 15:25:04,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:25:04,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-19 15:25:04,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:25:04,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-19 15:25:04,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-12-19 15:25:04,875 INFO L87 Difference]: Start difference. First operand 258 states and 343 transitions. Second operand has 16 states, 15 states have (on average 3.533333333333333) internal successors, (53), 16 states have internal predecessors, (53), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-19 15:25:06,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:25:06,279 INFO L93 Difference]: Finished difference Result 733 states and 958 transitions. [2023-12-19 15:25:06,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-19 15:25:06,280 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.533333333333333) internal successors, (53), 16 states have internal predecessors, (53), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 145 [2023-12-19 15:25:06,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:25:06,281 INFO L225 Difference]: With dead ends: 733 [2023-12-19 15:25:06,281 INFO L226 Difference]: Without dead ends: 476 [2023-12-19 15:25:06,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=203, Invalid=789, Unknown=0, NotChecked=0, Total=992 [2023-12-19 15:25:06,282 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 599 mSDsluCounter, 1528 mSDsCounter, 0 mSdLazyCounter, 1196 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 1726 SdHoareTripleChecker+Invalid, 1285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 15:25:06,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [599 Valid, 1726 Invalid, 1285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1196 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 15:25:06,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2023-12-19 15:25:06,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 315. [2023-12-19 15:25:06,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 293 states have (on average 1.2764505119453924) internal successors, (374), 293 states have internal predecessors, (374), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-19 15:25:06,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 412 transitions. [2023-12-19 15:25:06,329 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 412 transitions. Word has length 145 [2023-12-19 15:25:06,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:25:06,329 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 412 transitions. [2023-12-19 15:25:06,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.533333333333333) internal successors, (53), 16 states have internal predecessors, (53), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-19 15:25:06,330 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 412 transitions. [2023-12-19 15:25:06,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-19 15:25:06,331 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:25:06,331 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] [2023-12-19 15:25:06,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-19 15:25:06,331 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:25:06,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:25:06,331 INFO L85 PathProgramCache]: Analyzing trace with hash -52044018, now seen corresponding path program 1 times [2023-12-19 15:25:06,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:25:06,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422636985] [2023-12-19 15:25:06,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:25:06,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:25:06,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:06,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:25:06,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:06,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:25:06,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:06,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:25:06,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:06,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:25:06,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:06,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:25:06,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:06,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:25:06,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:06,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:25:06,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:06,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:25:06,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:06,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:25:06,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:06,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:25:06,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:06,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:25:06,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:06,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:25:06,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:06,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:25:06,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:06,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:25:06,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:06,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:25:06,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:06,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:25:06,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:06,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:25:06,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:06,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:25:06,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:06,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 15:25:06,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:06,736 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-19 15:25:06,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:25:06,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422636985] [2023-12-19 15:25:06,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422636985] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:25:06,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:25:06,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 15:25:06,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252341307] [2023-12-19 15:25:06,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:25:06,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 15:25:06,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:25:06,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 15:25:06,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-19 15:25:06,738 INFO L87 Difference]: Start difference. First operand 315 states and 412 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) [2023-12-19 15:25:07,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:25:07,247 INFO L93 Difference]: Finished difference Result 745 states and 966 transitions. [2023-12-19 15:25:07,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 15:25:07,247 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 [2023-12-19 15:25:07,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:25:07,248 INFO L225 Difference]: With dead ends: 745 [2023-12-19 15:25:07,248 INFO L226 Difference]: Without dead ends: 431 [2023-12-19 15:25:07,249 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 [2023-12-19 15:25:07,249 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 179 mSDsluCounter, 1081 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 1276 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 15:25:07,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 1276 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 15:25:07,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2023-12-19 15:25:07,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 308. [2023-12-19 15:25:07,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 286 states have (on average 1.2587412587412588) internal successors, (360), 286 states have internal predecessors, (360), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-19 15:25:07,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 398 transitions. [2023-12-19 15:25:07,298 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 398 transitions. Word has length 145 [2023-12-19 15:25:07,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:25:07,298 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 398 transitions. [2023-12-19 15:25:07,298 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) [2023-12-19 15:25:07,298 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 398 transitions. [2023-12-19 15:25:07,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-19 15:25:07,299 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:25:07,299 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] [2023-12-19 15:25:07,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-19 15:25:07,300 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:25:07,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:25:07,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1971450158, now seen corresponding path program 1 times [2023-12-19 15:25:07,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:25:07,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971274597] [2023-12-19 15:25:07,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:25:07,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:25:07,321 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:25:07,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [305873468] [2023-12-19 15:25:07,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:25:07,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:25:07,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:25:07,323 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) [2023-12-19 15:25:07,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 15:25:07,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:07,566 INFO L262 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 111 conjunts are in the unsatisfiable core [2023-12-19 15:25:07,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:25:09,930 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 15 treesize of output 1 [2023-12-19 15:25:10,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-19 15:25:10,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-19 15:25:11,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2023-12-19 15:25:12,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 44 [2023-12-19 15:25:12,519 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 25 treesize of output 21 [2023-12-19 15:25:12,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2023-12-19 15:25:13,680 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 69 [2023-12-19 15:25:13,766 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 317 proven. 135 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-12-19 15:25:13,767 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 15:25:25,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:25:25,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971274597] [2023-12-19 15:25:25,295 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:25:25,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305873468] [2023-12-19 15:25:25,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305873468] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 15:25:25,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-19 15:25:25,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2023-12-19 15:25:25,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083773337] [2023-12-19 15:25:25,295 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-19 15:25:25,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-19 15:25:25,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:25:25,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-19 15:25:25,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=1816, Unknown=1, NotChecked=0, Total=2162 [2023-12-19 15:25:25,297 INFO L87 Difference]: Start difference. First operand 308 states and 398 transitions. Second operand has 29 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 27 states have internal predecessors, (68), 6 states have call successors, (19), 4 states have call predecessors, (19), 6 states have return successors, (19), 4 states have call predecessors, (19), 6 states have call successors, (19) [2023-12-19 15:25:33,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:25:33,109 INFO L93 Difference]: Finished difference Result 937 states and 1207 transitions. [2023-12-19 15:25:33,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-12-19 15:25:33,110 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 27 states have internal predecessors, (68), 6 states have call successors, (19), 4 states have call predecessors, (19), 6 states have return successors, (19), 4 states have call predecessors, (19), 6 states have call successors, (19) Word has length 145 [2023-12-19 15:25:33,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:25:33,112 INFO L225 Difference]: With dead ends: 937 [2023-12-19 15:25:33,112 INFO L226 Difference]: Without dead ends: 630 [2023-12-19 15:25:33,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1852 ImplicationChecksByTransitivity, 17.0s TimeCoverageRelationStatistics Valid=1900, Invalid=7411, Unknown=1, NotChecked=0, Total=9312 [2023-12-19 15:25:33,115 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 835 mSDsluCounter, 1968 mSDsCounter, 0 mSdLazyCounter, 3011 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 837 SdHoareTripleChecker+Valid, 2118 SdHoareTripleChecker+Invalid, 3225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 3011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-19 15:25:33,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [837 Valid, 2118 Invalid, 3225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 3011 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-19 15:25:33,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2023-12-19 15:25:33,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 316. [2023-12-19 15:25:33,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 292 states have (on average 1.2534246575342465) internal successors, (366), 292 states have internal predecessors, (366), 19 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-19 15:25:33,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 404 transitions. [2023-12-19 15:25:33,170 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 404 transitions. Word has length 145 [2023-12-19 15:25:33,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:25:33,171 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 404 transitions. [2023-12-19 15:25:33,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 27 states have internal predecessors, (68), 6 states have call successors, (19), 4 states have call predecessors, (19), 6 states have return successors, (19), 4 states have call predecessors, (19), 6 states have call successors, (19) [2023-12-19 15:25:33,171 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 404 transitions. [2023-12-19 15:25:33,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-19 15:25:33,172 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:25:33,172 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] [2023-12-19 15:25:33,183 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 15:25:33,380 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,SelfDestructingSolverStorable31 [2023-12-19 15:25:33,380 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:25:33,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:25:33,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1069290478, now seen corresponding path program 1 times [2023-12-19 15:25:33,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:25:33,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775291101] [2023-12-19 15:25:33,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:25:33,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:25:33,415 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:25:33,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1819995118] [2023-12-19 15:25:33,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:25:33,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:25:33,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:25:33,423 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) [2023-12-19 15:25:33,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 15:25:33,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:33,642 INFO L262 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 65 conjunts are in the unsatisfiable core [2023-12-19 15:25:33,649 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:25:35,660 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 15 treesize of output 1 [2023-12-19 15:25:35,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 15:25:35,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-19 15:25:36,034 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 25 treesize of output 21 [2023-12-19 15:25:36,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2023-12-19 15:25:36,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 15:25:36,718 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:25:36,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 58 [2023-12-19 15:25:36,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 30 [2023-12-19 15:25:36,794 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 123 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2023-12-19 15:25:36,794 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 15:25:37,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:25:37,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775291101] [2023-12-19 15:25:37,281 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:25:37,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819995118] [2023-12-19 15:25:37,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819995118] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 15:25:37,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-19 15:25:37,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2023-12-19 15:25:37,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710841421] [2023-12-19 15:25:37,281 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-19 15:25:37,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-19 15:25:37,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:25:37,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-19 15:25:37,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=774, Unknown=0, NotChecked=0, Total=930 [2023-12-19 15:25:37,283 INFO L87 Difference]: Start difference. First operand 316 states and 404 transitions. Second operand has 20 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 18 states have internal predecessors, (59), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-19 15:25:41,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:25:41,777 INFO L93 Difference]: Finished difference Result 955 states and 1215 transitions. [2023-12-19 15:25:41,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-12-19 15:25:41,778 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 18 states have internal predecessors, (59), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 145 [2023-12-19 15:25:41,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:25:41,779 INFO L225 Difference]: With dead ends: 955 [2023-12-19 15:25:41,779 INFO L226 Difference]: Without dead ends: 640 [2023-12-19 15:25:41,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 970 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1028, Invalid=3664, Unknown=0, NotChecked=0, Total=4692 [2023-12-19 15:25:41,781 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 665 mSDsluCounter, 1567 mSDsCounter, 0 mSdLazyCounter, 2583 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 1784 SdHoareTripleChecker+Invalid, 2750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 2583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-19 15:25:41,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [665 Valid, 1784 Invalid, 2750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 2583 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-19 15:25:41,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2023-12-19 15:25:41,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 316. [2023-12-19 15:25:41,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 292 states have (on average 1.2534246575342465) internal successors, (366), 292 states have internal predecessors, (366), 19 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-19 15:25:41,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 404 transitions. [2023-12-19 15:25:41,838 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 404 transitions. Word has length 145 [2023-12-19 15:25:41,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:25:41,838 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 404 transitions. [2023-12-19 15:25:41,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 18 states have internal predecessors, (59), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-19 15:25:41,838 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 404 transitions. [2023-12-19 15:25:41,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-19 15:25:41,839 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:25:41,839 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] [2023-12-19 15:25:41,846 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 15:25:42,045 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,SelfDestructingSolverStorable32 [2023-12-19 15:25:42,045 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:25:42,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:25:42,046 INFO L85 PathProgramCache]: Analyzing trace with hash -751189549, now seen corresponding path program 1 times [2023-12-19 15:25:42,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:25:42,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934065202] [2023-12-19 15:25:42,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:25:42,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:25:42,065 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:25:42,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2080980037] [2023-12-19 15:25:42,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:25:42,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:25:42,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:25:42,066 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) [2023-12-19 15:25:42,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 15:25:42,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:42,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-19 15:25:42,272 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:25:43,082 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 17 treesize of output 13 [2023-12-19 15:25:43,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2023-12-19 15:25:43,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-12-19 15:25:43,263 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 19 treesize of output 11 [2023-12-19 15:25:43,326 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2023-12-19 15:25:43,326 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 15:25:43,737 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-19 15:25:43,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:25:43,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934065202] [2023-12-19 15:25:43,737 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:25:43,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080980037] [2023-12-19 15:25:43,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080980037] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 15:25:43,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 15:25:43,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 21 [2023-12-19 15:25:43,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845031174] [2023-12-19 15:25:43,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:25:43,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 15:25:43,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:25:43,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 15:25:43,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2023-12-19 15:25:43,739 INFO L87 Difference]: Start difference. First operand 316 states and 404 transitions. Second operand has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 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) [2023-12-19 15:25:44,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:25:44,617 INFO L93 Difference]: Finished difference Result 699 states and 897 transitions. [2023-12-19 15:25:44,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 15:25:44,617 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 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 [2023-12-19 15:25:44,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:25:44,618 INFO L225 Difference]: With dead ends: 699 [2023-12-19 15:25:44,618 INFO L226 Difference]: Without dead ends: 384 [2023-12-19 15:25:44,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=162, Invalid=768, Unknown=0, NotChecked=0, Total=930 [2023-12-19 15:25:44,620 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 342 mSDsluCounter, 1038 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 1229 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 15:25:44,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 1229 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 15:25:44,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2023-12-19 15:25:44,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 268. [2023-12-19 15:25:44,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 244 states have (on average 1.2827868852459017) internal successors, (313), 244 states have internal predecessors, (313), 19 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-19 15:25:44,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 351 transitions. [2023-12-19 15:25:44,673 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 351 transitions. Word has length 146 [2023-12-19 15:25:44,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:25:44,673 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 351 transitions. [2023-12-19 15:25:44,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 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) [2023-12-19 15:25:44,673 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 351 transitions. [2023-12-19 15:25:44,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-19 15:25:44,674 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:25:44,674 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] [2023-12-19 15:25:44,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 15:25:44,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:25:44,875 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:25:44,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:25:44,875 INFO L85 PathProgramCache]: Analyzing trace with hash 240761604, now seen corresponding path program 1 times [2023-12-19 15:25:44,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:25:44,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135318833] [2023-12-19 15:25:44,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:25:44,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:25:44,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:45,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:25:45,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:45,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:25:45,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:45,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:25:45,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:45,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:25:45,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:45,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:25:45,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:45,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:25:45,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:45,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:25:45,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:45,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:25:45,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:45,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:25:45,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:45,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:25:45,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:45,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:25:45,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:45,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:25:45,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:45,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:25:45,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:45,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:25:45,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:45,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:25:45,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:45,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:25:45,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:45,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:25:45,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:45,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:25:45,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:45,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 15:25:45,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:45,183 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-19 15:25:45,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:25:45,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135318833] [2023-12-19 15:25:45,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135318833] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:25:45,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:25:45,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 15:25:45,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879197270] [2023-12-19 15:25:45,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:25:45,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 15:25:45,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:25:45,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 15:25:45,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-19 15:25:45,185 INFO L87 Difference]: Start difference. First operand 268 states and 351 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) [2023-12-19 15:25:45,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:25:45,398 INFO L93 Difference]: Finished difference Result 653 states and 847 transitions. [2023-12-19 15:25:45,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 15:25:45,399 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 [2023-12-19 15:25:45,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:25:45,400 INFO L225 Difference]: With dead ends: 653 [2023-12-19 15:25:45,400 INFO L226 Difference]: Without dead ends: 386 [2023-12-19 15:25:45,401 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 [2023-12-19 15:25:45,401 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 251 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 15:25:45,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 704 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 15:25:45,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2023-12-19 15:25:45,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 286. [2023-12-19 15:25:45,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 262 states have (on average 1.2633587786259541) internal successors, (331), 262 states have internal predecessors, (331), 19 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-19 15:25:45,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 369 transitions. [2023-12-19 15:25:45,461 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 369 transitions. Word has length 146 [2023-12-19 15:25:45,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:25:45,461 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 369 transitions. [2023-12-19 15:25:45,461 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) [2023-12-19 15:25:45,461 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 369 transitions. [2023-12-19 15:25:45,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-19 15:25:45,462 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:25:45,462 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] [2023-12-19 15:25:45,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-19 15:25:45,462 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:25:45,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:25:45,462 INFO L85 PathProgramCache]: Analyzing trace with hash -576886846, now seen corresponding path program 1 times [2023-12-19 15:25:45,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:25:45,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493808918] [2023-12-19 15:25:45,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:25:45,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:25:45,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:45,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:25:45,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:45,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:25:45,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:45,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:25:45,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:45,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:25:45,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:45,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:25:45,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:45,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:25:45,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:45,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:25:45,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:45,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:25:45,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:45,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:25:45,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:45,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:25:45,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:45,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:25:45,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:45,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:25:45,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:45,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:25:45,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:45,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:25:45,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:45,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:25:45,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:45,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:25:45,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:45,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:25:45,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:45,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:25:45,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:45,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 15:25:45,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:45,694 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-19 15:25:45,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:25:45,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493808918] [2023-12-19 15:25:45,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493808918] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:25:45,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:25:45,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 15:25:45,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170888732] [2023-12-19 15:25:45,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:25:45,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 15:25:45,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:25:45,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 15:25:45,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 15:25:45,697 INFO L87 Difference]: Start difference. First operand 286 states and 369 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) [2023-12-19 15:25:45,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:25:45,854 INFO L93 Difference]: Finished difference Result 621 states and 804 transitions. [2023-12-19 15:25:45,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 15:25:45,854 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 [2023-12-19 15:25:45,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:25:45,855 INFO L225 Difference]: With dead ends: 621 [2023-12-19 15:25:45,855 INFO L226 Difference]: Without dead ends: 336 [2023-12-19 15:25:45,855 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 [2023-12-19 15:25:45,856 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 173 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 15:25:45,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 527 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 15:25:45,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2023-12-19 15:25:45,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 275. [2023-12-19 15:25:45,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 251 states have (on average 1.2709163346613546) internal successors, (319), 251 states have internal predecessors, (319), 19 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-19 15:25:45,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 357 transitions. [2023-12-19 15:25:45,911 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 357 transitions. Word has length 146 [2023-12-19 15:25:45,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:25:45,911 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 357 transitions. [2023-12-19 15:25:45,912 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) [2023-12-19 15:25:45,912 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 357 transitions. [2023-12-19 15:25:45,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-19 15:25:45,913 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:25:45,913 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] [2023-12-19 15:25:45,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-12-19 15:25:45,913 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:25:45,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:25:45,913 INFO L85 PathProgramCache]: Analyzing trace with hash -896374478, now seen corresponding path program 1 times [2023-12-19 15:25:45,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:25:45,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812783318] [2023-12-19 15:25:45,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:25:45,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:25:45,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:46,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:25:46,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:46,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:25:46,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:46,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:25:46,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:46,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:25:46,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:46,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:25:46,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:46,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:25:46,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:46,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:25:46,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:46,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:25:46,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:46,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:25:46,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:46,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:25:46,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:46,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:25:46,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:46,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:25:46,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:46,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:25:46,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:46,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:25:46,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:46,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:25:46,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:46,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:25:46,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:46,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:25:46,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:46,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:25:46,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:46,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 15:25:46,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:46,120 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-19 15:25:46,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:25:46,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812783318] [2023-12-19 15:25:46,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812783318] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:25:46,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:25:46,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 15:25:46,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505960582] [2023-12-19 15:25:46,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:25:46,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 15:25:46,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:25:46,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 15:25:46,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 15:25:46,121 INFO L87 Difference]: Start difference. First operand 275 states and 357 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) [2023-12-19 15:25:46,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:25:46,254 INFO L93 Difference]: Finished difference Result 583 states and 758 transitions. [2023-12-19 15:25:46,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 15:25:46,254 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 [2023-12-19 15:25:46,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:25:46,255 INFO L225 Difference]: With dead ends: 583 [2023-12-19 15:25:46,255 INFO L226 Difference]: Without dead ends: 307 [2023-12-19 15:25:46,256 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 [2023-12-19 15:25:46,256 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, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 15:25:46,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 575 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 15:25:46,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2023-12-19 15:25:46,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 266. [2023-12-19 15:25:46,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 242 states have (on average 1.2727272727272727) internal successors, (308), 242 states have internal predecessors, (308), 19 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-19 15:25:46,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 346 transitions. [2023-12-19 15:25:46,314 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 346 transitions. Word has length 146 [2023-12-19 15:25:46,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:25:46,314 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 346 transitions. [2023-12-19 15:25:46,315 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) [2023-12-19 15:25:46,315 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 346 transitions. [2023-12-19 15:25:46,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-19 15:25:46,315 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:25:46,315 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] [2023-12-19 15:25:46,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-12-19 15:25:46,316 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:25:46,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:25:46,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1404448112, now seen corresponding path program 1 times [2023-12-19 15:25:46,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:25:46,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749060861] [2023-12-19 15:25:46,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:25:46,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:25:46,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:46,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:25:46,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:46,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:25:46,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:46,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:25:46,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:46,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:25:46,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:46,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:25:46,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:46,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:25:46,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:46,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:25:46,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:46,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:25:46,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:46,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:25:46,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:46,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:25:46,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:46,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:25:46,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:46,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:25:46,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:46,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:25:46,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:46,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:25:46,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:46,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:25:46,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:46,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:25:46,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:46,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:25:46,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:46,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:25:46,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:46,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 15:25:46,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:46,502 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-19 15:25:46,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:25:46,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749060861] [2023-12-19 15:25:46,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749060861] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:25:46,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:25:46,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 15:25:46,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869620533] [2023-12-19 15:25:46,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:25:46,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 15:25:46,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:25:46,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 15:25:46,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 15:25:46,503 INFO L87 Difference]: Start difference. First operand 266 states and 346 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) [2023-12-19 15:25:46,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:25:46,625 INFO L93 Difference]: Finished difference Result 566 states and 737 transitions. [2023-12-19 15:25:46,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 15:25:46,626 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 [2023-12-19 15:25:46,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:25:46,627 INFO L225 Difference]: With dead ends: 566 [2023-12-19 15:25:46,627 INFO L226 Difference]: Without dead ends: 301 [2023-12-19 15:25:46,627 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 [2023-12-19 15:25:46,627 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, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 15:25:46,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 590 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 15:25:46,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2023-12-19 15:25:46,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 261. [2023-12-19 15:25:46,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 237 states have (on average 1.2742616033755274) internal successors, (302), 237 states have internal predecessors, (302), 19 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-19 15:25:46,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 340 transitions. [2023-12-19 15:25:46,706 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 340 transitions. Word has length 146 [2023-12-19 15:25:46,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:25:46,706 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 340 transitions. [2023-12-19 15:25:46,706 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) [2023-12-19 15:25:46,706 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 340 transitions. [2023-12-19 15:25:46,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-19 15:25:46,707 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:25:46,708 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] [2023-12-19 15:25:46,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-12-19 15:25:46,708 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:25:46,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:25:46,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1504940402, now seen corresponding path program 1 times [2023-12-19 15:25:46,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:25:46,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464817194] [2023-12-19 15:25:46,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:25:46,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:25:46,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:47,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:25:47,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:47,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:25:47,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:47,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:25:47,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:47,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:25:47,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:47,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:25:47,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:47,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:25:47,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:47,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:25:47,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:47,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:25:47,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:47,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:25:47,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:47,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:25:47,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:47,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:25:47,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:47,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:25:47,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:47,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:25:47,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:47,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:25:47,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:47,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:25:47,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:47,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:25:47,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:47,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:25:47,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:47,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:25:47,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:47,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 15:25:47,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:47,647 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-19 15:25:47,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:25:47,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464817194] [2023-12-19 15:25:47,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464817194] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:25:47,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:25:47,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-19 15:25:47,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526739242] [2023-12-19 15:25:47,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:25:47,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-19 15:25:47,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:25:47,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-19 15:25:47,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-12-19 15:25:47,649 INFO L87 Difference]: Start difference. First operand 261 states and 340 transitions. Second operand has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-19 15:25:49,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:25:49,226 INFO L93 Difference]: Finished difference Result 636 states and 826 transitions. [2023-12-19 15:25:49,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 15:25:49,226 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 147 [2023-12-19 15:25:49,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:25:49,228 INFO L225 Difference]: With dead ends: 636 [2023-12-19 15:25:49,228 INFO L226 Difference]: Without dead ends: 376 [2023-12-19 15:25:49,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2023-12-19 15:25:49,228 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 309 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 877 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 15:25:49,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 902 Invalid, 912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 877 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 15:25:49,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2023-12-19 15:25:49,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 263. [2023-12-19 15:25:49,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 239 states have (on average 1.2719665271966527) internal successors, (304), 239 states have internal predecessors, (304), 19 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-19 15:25:49,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 342 transitions. [2023-12-19 15:25:49,286 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 342 transitions. Word has length 147 [2023-12-19 15:25:49,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:25:49,286 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 342 transitions. [2023-12-19 15:25:49,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-19 15:25:49,287 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 342 transitions. [2023-12-19 15:25:49,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-19 15:25:49,288 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:25:49,288 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] [2023-12-19 15:25:49,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-12-19 15:25:49,288 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:25:49,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:25:49,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1778909644, now seen corresponding path program 1 times [2023-12-19 15:25:49,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:25:49,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525404826] [2023-12-19 15:25:49,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:25:49,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:25:49,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:49,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:25:49,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:49,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:25:49,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:49,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:25:49,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:49,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:25:49,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:49,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:25:49,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:49,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:25:49,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:49,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:25:49,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:49,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:25:49,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:49,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:25:49,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:49,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:25:49,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:49,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:25:49,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:49,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:25:49,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:49,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:25:49,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:49,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:25:49,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:49,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:25:49,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:49,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:25:49,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:49,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:25:49,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:49,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:25:49,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:49,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 15:25:49,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:49,586 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-19 15:25:49,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:25:49,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525404826] [2023-12-19 15:25:49,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525404826] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:25:49,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:25:49,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 15:25:49,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924944838] [2023-12-19 15:25:49,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:25:49,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 15:25:49,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:25:49,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 15:25:49,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 15:25:49,588 INFO L87 Difference]: Start difference. First operand 263 states and 342 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) [2023-12-19 15:25:49,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:25:49,972 INFO L93 Difference]: Finished difference Result 633 states and 816 transitions. [2023-12-19 15:25:49,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 15:25:49,972 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 [2023-12-19 15:25:49,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:25:49,973 INFO L225 Difference]: With dead ends: 633 [2023-12-19 15:25:49,973 INFO L226 Difference]: Without dead ends: 371 [2023-12-19 15:25:49,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-19 15:25:49,974 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 155 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 15:25:49,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 712 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 15:25:49,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2023-12-19 15:25:50,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 263. [2023-12-19 15:25:50,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 239 states have (on average 1.2635983263598327) internal successors, (302), 239 states have internal predecessors, (302), 19 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-19 15:25:50,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 340 transitions. [2023-12-19 15:25:50,019 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 340 transitions. Word has length 147 [2023-12-19 15:25:50,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:25:50,020 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 340 transitions. [2023-12-19 15:25:50,020 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) [2023-12-19 15:25:50,020 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 340 transitions. [2023-12-19 15:25:50,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-19 15:25:50,020 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:25:50,021 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] [2023-12-19 15:25:50,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-12-19 15:25:50,021 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:25:50,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:25:50,021 INFO L85 PathProgramCache]: Analyzing trace with hash 2136422030, now seen corresponding path program 1 times [2023-12-19 15:25:50,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:25:50,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415517906] [2023-12-19 15:25:50,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:25:50,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:25:50,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:50,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:25:50,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:50,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:25:50,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:50,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:25:50,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:50,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:25:50,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:50,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:25:50,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:50,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:25:50,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:50,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:25:50,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:50,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:25:50,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:50,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:25:50,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:50,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:25:50,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:50,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:25:50,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:50,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:25:50,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:50,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:25:50,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:50,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:25:50,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:50,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:25:50,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:50,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:25:50,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:50,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:25:50,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:50,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:25:50,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:50,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 15:25:50,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:50,324 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-19 15:25:50,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:25:50,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415517906] [2023-12-19 15:25:50,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415517906] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:25:50,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:25:50,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 15:25:50,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819598016] [2023-12-19 15:25:50,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:25:50,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 15:25:50,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:25:50,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 15:25:50,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-19 15:25:50,325 INFO L87 Difference]: Start difference. First operand 263 states and 340 transitions. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 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) [2023-12-19 15:25:50,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:25:50,736 INFO L93 Difference]: Finished difference Result 609 states and 787 transitions. [2023-12-19 15:25:50,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 15:25:50,736 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 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 [2023-12-19 15:25:50,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:25:50,737 INFO L225 Difference]: With dead ends: 609 [2023-12-19 15:25:50,737 INFO L226 Difference]: Without dead ends: 347 [2023-12-19 15:25:50,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2023-12-19 15:25:50,738 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 181 mSDsluCounter, 1349 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 1543 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 15:25:50,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 1543 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 15:25:50,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2023-12-19 15:25:50,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 289. [2023-12-19 15:25:50,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 265 states have (on average 1.2641509433962264) internal successors, (335), 265 states have internal predecessors, (335), 19 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-19 15:25:50,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 373 transitions. [2023-12-19 15:25:50,804 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 373 transitions. Word has length 147 [2023-12-19 15:25:50,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:25:50,805 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 373 transitions. [2023-12-19 15:25:50,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 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) [2023-12-19 15:25:50,805 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 373 transitions. [2023-12-19 15:25:50,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-19 15:25:50,806 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:25:50,806 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] [2023-12-19 15:25:50,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-12-19 15:25:50,806 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:25:50,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:25:50,806 INFO L85 PathProgramCache]: Analyzing trace with hash 213193996, now seen corresponding path program 1 times [2023-12-19 15:25:50,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:25:50,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912507429] [2023-12-19 15:25:50,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:25:50,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:25:50,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:50,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:25:50,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:50,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:25:50,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:50,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:25:50,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:50,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:25:50,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:50,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:25:50,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:50,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:25:50,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:50,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:25:50,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:50,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:25:50,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:50,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:25:50,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:50,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:25:50,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:50,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:25:50,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:50,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:25:50,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:50,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:25:50,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:50,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:25:50,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:50,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:25:50,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:50,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:25:50,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:50,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:25:50,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:50,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:25:50,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:50,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 15:25:50,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:50,977 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-19 15:25:50,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:25:50,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912507429] [2023-12-19 15:25:50,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912507429] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:25:50,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:25:50,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 15:25:50,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298783262] [2023-12-19 15:25:50,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:25:50,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 15:25:50,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:25:50,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 15:25:50,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 15:25:50,978 INFO L87 Difference]: Start difference. First operand 289 states and 373 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) [2023-12-19 15:25:51,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:25:51,265 INFO L93 Difference]: Finished difference Result 566 states and 734 transitions. [2023-12-19 15:25:51,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 15:25:51,265 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 [2023-12-19 15:25:51,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:25:51,267 INFO L225 Difference]: With dead ends: 566 [2023-12-19 15:25:51,267 INFO L226 Difference]: Without dead ends: 278 [2023-12-19 15:25:51,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-19 15:25:51,267 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 49 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 15:25:51,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 288 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 15:25:51,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2023-12-19 15:25:51,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 251. [2023-12-19 15:25:51,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 227 states have (on average 1.2599118942731278) internal successors, (286), 227 states have internal predecessors, (286), 19 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-19 15:25:51,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 324 transitions. [2023-12-19 15:25:51,316 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 324 transitions. Word has length 147 [2023-12-19 15:25:51,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:25:51,316 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 324 transitions. [2023-12-19 15:25:51,316 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) [2023-12-19 15:25:51,317 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 324 transitions. [2023-12-19 15:25:51,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-19 15:25:51,317 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:25:51,317 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] [2023-12-19 15:25:51,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-12-19 15:25:51,318 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:25:51,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:25:51,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1308053598, now seen corresponding path program 1 times [2023-12-19 15:25:51,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:25:51,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720158514] [2023-12-19 15:25:51,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:25:51,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:25:51,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:51,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:25:51,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:51,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:25:51,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:51,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:25:51,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:51,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:25:51,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:51,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:25:51,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:51,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:25:51,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:51,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:25:51,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:51,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:25:51,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:51,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:25:51,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:51,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:25:51,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:51,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:25:51,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:51,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:25:51,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:51,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:25:51,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:51,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:25:51,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:51,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:25:51,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:51,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:25:51,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:51,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:25:51,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:51,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:25:51,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:51,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 15:25:51,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:51,960 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-19 15:25:51,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:25:51,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720158514] [2023-12-19 15:25:51,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720158514] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:25:51,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:25:51,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 15:25:51,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544030456] [2023-12-19 15:25:51,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:25:51,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 15:25:51,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:25:51,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 15:25:51,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 15:25:51,963 INFO L87 Difference]: Start difference. First operand 251 states and 324 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) [2023-12-19 15:25:52,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:25:52,244 INFO L93 Difference]: Finished difference Result 282 states and 365 transitions. [2023-12-19 15:25:52,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 15:25:52,244 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 [2023-12-19 15:25:52,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:25:52,246 INFO L225 Difference]: With dead ends: 282 [2023-12-19 15:25:52,246 INFO L226 Difference]: Without dead ends: 280 [2023-12-19 15:25:52,246 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 [2023-12-19 15:25:52,251 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 72 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 15:25:52,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 490 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 15:25:52,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2023-12-19 15:25:52,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 253. [2023-12-19 15:25:52,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 229 states have (on average 1.25764192139738) internal successors, (288), 229 states have internal predecessors, (288), 19 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-19 15:25:52,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 326 transitions. [2023-12-19 15:25:52,320 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 326 transitions. Word has length 147 [2023-12-19 15:25:52,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:25:52,321 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 326 transitions. [2023-12-19 15:25:52,321 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) [2023-12-19 15:25:52,321 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 326 transitions. [2023-12-19 15:25:52,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-19 15:25:52,322 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:25:52,322 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, 1] [2023-12-19 15:25:52,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-12-19 15:25:52,322 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:25:52,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:25:52,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1308113180, now seen corresponding path program 1 times [2023-12-19 15:25:52,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:25:52,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492267194] [2023-12-19 15:25:52,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:25:52,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:25:52,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:52,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:25:52,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:52,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:25:52,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:52,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:25:52,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:52,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:25:52,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:52,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:25:52,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:52,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:25:52,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:52,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:25:52,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:52,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:25:52,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:52,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:25:52,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:52,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:25:52,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:52,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:25:52,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:52,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:25:52,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:52,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:25:52,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:52,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:25:52,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:52,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:25:52,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:52,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:25:52,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:52,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:25:52,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:52,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:25:52,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:52,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 15:25:52,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:52,628 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-19 15:25:52,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:25:52,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492267194] [2023-12-19 15:25:52,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492267194] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:25:52,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:25:52,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 15:25:52,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889492107] [2023-12-19 15:25:52,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:25:52,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 15:25:52,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:25:52,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 15:25:52,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 15:25:52,630 INFO L87 Difference]: Start difference. First operand 253 states and 326 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) 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), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-19 15:25:52,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:25:52,914 INFO L93 Difference]: Finished difference Result 522 states and 673 transitions. [2023-12-19 15:25:52,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 15:25:52,915 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) 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), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 147 [2023-12-19 15:25:52,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:25:52,916 INFO L225 Difference]: With dead ends: 522 [2023-12-19 15:25:52,916 INFO L226 Difference]: Without dead ends: 270 [2023-12-19 15:25:52,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-19 15:25:52,917 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 241 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 15:25:52,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 457 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 15:25:52,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2023-12-19 15:25:53,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 269. [2023-12-19 15:25:53,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 238 states have (on average 1.2436974789915967) internal successors, (296), 239 states have internal predecessors, (296), 25 states have call successors, (25), 5 states have call predecessors, (25), 5 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-19 15:25:53,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 346 transitions. [2023-12-19 15:25:53,034 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 346 transitions. Word has length 147 [2023-12-19 15:25:53,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:25:53,035 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 346 transitions. [2023-12-19 15:25:53,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) 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), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-19 15:25:53,035 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 346 transitions. [2023-12-19 15:25:53,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-19 15:25:53,036 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:25:53,036 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] [2023-12-19 15:25:53,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-12-19 15:25:53,036 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:25:53,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:25:53,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1365371482, now seen corresponding path program 1 times [2023-12-19 15:25:53,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:25:53,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914644510] [2023-12-19 15:25:53,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:25:53,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:25:53,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:53,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:25:53,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:53,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:25:53,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:53,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:25:53,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:53,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:25:53,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:53,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:25:53,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:53,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:25:53,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:53,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:25:53,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:53,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:25:53,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:53,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 15:25:53,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:53,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 15:25:53,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:53,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 15:25:53,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:53,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 15:25:53,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:53,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 15:25:53,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:53,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 15:25:53,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:53,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 15:25:53,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:53,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 15:25:53,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:53,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 15:25:53,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:53,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 15:25:53,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:53,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 15:25:53,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:53,176 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-19 15:25:53,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:25:53,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914644510] [2023-12-19 15:25:53,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914644510] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:25:53,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:25:53,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 15:25:53,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326566184] [2023-12-19 15:25:53,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:25:53,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 15:25:53,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:25:53,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 15:25:53,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 15:25:53,178 INFO L87 Difference]: Start difference. First operand 269 states and 346 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) [2023-12-19 15:25:53,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:25:53,320 INFO L93 Difference]: Finished difference Result 531 states and 680 transitions. [2023-12-19 15:25:53,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 15:25:53,321 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 [2023-12-19 15:25:53,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:25:53,322 INFO L225 Difference]: With dead ends: 531 [2023-12-19 15:25:53,322 INFO L226 Difference]: Without dead ends: 275 [2023-12-19 15:25:53,323 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 [2023-12-19 15:25:53,324 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 [2023-12-19 15:25:53,324 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] [2023-12-19 15:25:53,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2023-12-19 15:25:53,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 272. [2023-12-19 15:25:53,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 241 states have (on average 1.2406639004149378) internal successors, (299), 242 states have internal predecessors, (299), 25 states have call successors, (25), 5 states have call predecessors, (25), 5 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-19 15:25:53,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 349 transitions. [2023-12-19 15:25:53,425 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 349 transitions. Word has length 147 [2023-12-19 15:25:53,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:25:53,425 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 349 transitions. [2023-12-19 15:25:53,425 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) [2023-12-19 15:25:53,426 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 349 transitions. [2023-12-19 15:25:53,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-19 15:25:53,426 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:25:53,427 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] [2023-12-19 15:25:53,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-12-19 15:25:53,427 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:25:53,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:25:53,427 INFO L85 PathProgramCache]: Analyzing trace with hash -682952811, now seen corresponding path program 1 times [2023-12-19 15:25:53,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:25:53,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600170617] [2023-12-19 15:25:53,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:25:53,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:25:53,447 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:25:53,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1740874879] [2023-12-19 15:25:53,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:25:53,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:25:53,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:25:53,448 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) [2023-12-19 15:25:53,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 15:25:53,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:53,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-19 15:25:53,703 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:25:53,801 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2023-12-19 15:25:53,801 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 34 treesize of output 27 [2023-12-19 15:25:53,825 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-19 15:25:53,825 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:25:53,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:25:53,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600170617] [2023-12-19 15:25:53,825 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:25:53,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740874879] [2023-12-19 15:25:53,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740874879] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:25:53,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:25:53,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 15:25:53,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985928778] [2023-12-19 15:25:53,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:25:53,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 15:25:53,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:25:53,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 15:25:53,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 15:25:53,827 INFO L87 Difference]: Start difference. First operand 272 states and 349 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) [2023-12-19 15:25:54,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:25:54,310 INFO L93 Difference]: Finished difference Result 683 states and 860 transitions. [2023-12-19 15:25:54,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 15:25:54,310 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 [2023-12-19 15:25:54,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:25:54,312 INFO L225 Difference]: With dead ends: 683 [2023-12-19 15:25:54,312 INFO L226 Difference]: Without dead ends: 424 [2023-12-19 15:25:54,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-19 15:25:54,312 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 106 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 15:25:54,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 502 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 15:25:54,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2023-12-19 15:25:54,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 418. [2023-12-19 15:25:54,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 374 states have (on average 1.2085561497326203) internal successors, (452), 376 states have internal predecessors, (452), 36 states have call successors, (36), 7 states have call predecessors, (36), 7 states have return successors, (36), 34 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-19 15:25:54,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 524 transitions. [2023-12-19 15:25:54,474 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 524 transitions. Word has length 149 [2023-12-19 15:25:54,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:25:54,474 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 524 transitions. [2023-12-19 15:25:54,475 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) [2023-12-19 15:25:54,475 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 524 transitions. [2023-12-19 15:25:54,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-19 15:25:54,476 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:25:54,476 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] [2023-12-19 15:25:54,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 15:25:54,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:25:54,683 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:25:54,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:25:54,684 INFO L85 PathProgramCache]: Analyzing trace with hash -424787373, now seen corresponding path program 1 times [2023-12-19 15:25:54,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:25:54,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364472830] [2023-12-19 15:25:54,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:25:54,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:25:54,702 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:25:54,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1266984571] [2023-12-19 15:25:54,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:25:54,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:25:54,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:25:54,704 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) [2023-12-19 15:25:54,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 15:25:54,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:54,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-19 15:25:54,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:25:55,216 INFO L349 Elim1Store]: treesize reduction 3, result has 95.9 percent of original size [2023-12-19 15:25:55,217 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 67 treesize of output 104 [2023-12-19 15:25:55,324 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-19 15:25:55,324 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:25:55,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:25:55,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364472830] [2023-12-19 15:25:55,325 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:25:55,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266984571] [2023-12-19 15:25:55,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266984571] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:25:55,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:25:55,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 15:25:55,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147617541] [2023-12-19 15:25:55,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:25:55,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 15:25:55,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:25:55,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 15:25:55,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 15:25:55,326 INFO L87 Difference]: Start difference. First operand 418 states and 524 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) [2023-12-19 15:25:56,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:25:56,168 INFO L93 Difference]: Finished difference Result 835 states and 1042 transitions. [2023-12-19 15:25:56,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 15:25:56,169 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 [2023-12-19 15:25:56,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:25:56,170 INFO L225 Difference]: With dead ends: 835 [2023-12-19 15:25:56,170 INFO L226 Difference]: Without dead ends: 430 [2023-12-19 15:25:56,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-12-19 15:25:56,171 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 80 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 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, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 15:25:56,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 687 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 15:25:56,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2023-12-19 15:25:56,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 384. [2023-12-19 15:25:56,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 347 states have (on average 1.2132564841498559) internal successors, (421), 348 states have internal predecessors, (421), 30 states have call successors, (30), 6 states have call predecessors, (30), 6 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-19 15:25:56,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 481 transitions. [2023-12-19 15:25:56,307 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 481 transitions. Word has length 149 [2023-12-19 15:25:56,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:25:56,307 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 481 transitions. [2023-12-19 15:25:56,307 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) [2023-12-19 15:25:56,307 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 481 transitions. [2023-12-19 15:25:56,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-19 15:25:56,308 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:25:56,309 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] [2023-12-19 15:25:56,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 15:25:56,516 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,SelfDestructingSolverStorable46 [2023-12-19 15:25:56,516 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:25:56,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:25:56,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1240275223, now seen corresponding path program 1 times [2023-12-19 15:25:56,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:25:56,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825225010] [2023-12-19 15:25:56,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:25:56,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:25:56,535 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:25:56,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1759390274] [2023-12-19 15:25:56,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:25:56,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:25:56,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:25:56,537 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) [2023-12-19 15:25:56,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 15:25:56,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:56,754 INFO L262 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-19 15:25:56,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:25:56,839 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:25:56,839 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 45 treesize of output 57 [2023-12-19 15:25:56,862 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-19 15:25:56,862 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:25:56,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:25:56,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825225010] [2023-12-19 15:25:56,863 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:25:56,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759390274] [2023-12-19 15:25:56,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759390274] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:25:56,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:25:56,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 15:25:56,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358656697] [2023-12-19 15:25:56,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:25:56,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 15:25:56,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:25:56,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 15:25:56,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 15:25:56,864 INFO L87 Difference]: Start difference. First operand 384 states and 481 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) [2023-12-19 15:25:57,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:25:57,234 INFO L93 Difference]: Finished difference Result 905 states and 1120 transitions. [2023-12-19 15:25:57,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 15:25:57,235 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 [2023-12-19 15:25:57,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:25:57,236 INFO L225 Difference]: With dead ends: 905 [2023-12-19 15:25:57,236 INFO L226 Difference]: Without dead ends: 548 [2023-12-19 15:25:57,237 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 [2023-12-19 15:25:57,237 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 94 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2023-12-19 15:25:57,237 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] [2023-12-19 15:25:57,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2023-12-19 15:25:57,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 481. [2023-12-19 15:25:57,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 444 states have (on average 1.2004504504504505) internal successors, (533), 445 states have internal predecessors, (533), 30 states have call successors, (30), 6 states have call predecessors, (30), 6 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-19 15:25:57,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 593 transitions. [2023-12-19 15:25:57,356 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 593 transitions. Word has length 149 [2023-12-19 15:25:57,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:25:57,356 INFO L495 AbstractCegarLoop]: Abstraction has 481 states and 593 transitions. [2023-12-19 15:25:57,356 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) [2023-12-19 15:25:57,356 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 593 transitions. [2023-12-19 15:25:57,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-19 15:25:57,357 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:25:57,357 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] [2023-12-19 15:25:57,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 15:25:57,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-12-19 15:25:57,562 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:25:57,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:25:57,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1498440661, now seen corresponding path program 1 times [2023-12-19 15:25:57,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:25:57,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363603002] [2023-12-19 15:25:57,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:25:57,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:25:57,577 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:25:57,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2145608557] [2023-12-19 15:25:57,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:25:57,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:25:57,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:25:57,578 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) [2023-12-19 15:25:57,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 15:25:57,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:57,810 INFO L262 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-19 15:25:57,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:25:57,943 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:25:57,943 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 50 treesize of output 62 [2023-12-19 15:25:57,977 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-19 15:25:57,977 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:25:57,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:25:57,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363603002] [2023-12-19 15:25:57,977 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:25:57,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145608557] [2023-12-19 15:25:57,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145608557] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:25:57,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:25:57,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 15:25:57,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439755898] [2023-12-19 15:25:57,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:25:57,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 15:25:57,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:25:57,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 15:25:57,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 15:25:57,979 INFO L87 Difference]: Start difference. First operand 481 states and 593 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) [2023-12-19 15:25:58,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:25:58,524 INFO L93 Difference]: Finished difference Result 1062 states and 1288 transitions. [2023-12-19 15:25:58,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 15:25:58,524 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 [2023-12-19 15:25:58,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:25:58,526 INFO L225 Difference]: With dead ends: 1062 [2023-12-19 15:25:58,526 INFO L226 Difference]: Without dead ends: 608 [2023-12-19 15:25:58,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-19 15:25:58,527 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 76 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 15:25:58,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 682 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 15:25:58,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2023-12-19 15:25:58,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 565. [2023-12-19 15:25:58,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 528 states have (on average 1.1723484848484849) internal successors, (619), 529 states have internal predecessors, (619), 30 states have call successors, (30), 6 states have call predecessors, (30), 6 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-19 15:25:58,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 679 transitions. [2023-12-19 15:25:58,656 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 679 transitions. Word has length 149 [2023-12-19 15:25:58,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:25:58,656 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 679 transitions. [2023-12-19 15:25:58,656 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) [2023-12-19 15:25:58,656 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 679 transitions. [2023-12-19 15:25:58,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-19 15:25:58,658 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:25:58,658 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] [2023-12-19 15:25:58,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 15:25:58,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:25:58,865 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:25:58,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:25:58,865 INFO L85 PathProgramCache]: Analyzing trace with hash -284702644, now seen corresponding path program 1 times [2023-12-19 15:25:58,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:25:58,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637167035] [2023-12-19 15:25:58,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:25:58,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:25:58,881 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:25:58,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [660875870] [2023-12-19 15:25:58,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:25:58,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:25:58,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:25:58,883 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:25:58,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 15:25:59,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:25:59,233 INFO L262 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-19 15:25:59,241 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:26:01,375 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:26:01,375 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 58 treesize of output 54 [2023-12-19 15:26:01,382 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 43 treesize of output 35 [2023-12-19 15:26:01,386 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 [2023-12-19 15:26:01,419 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-19 15:26:01,419 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:26:01,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:26:01,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637167035] [2023-12-19 15:26:01,419 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:26:01,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660875870] [2023-12-19 15:26:01,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660875870] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:26:01,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:26:01,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 15:26:01,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757525636] [2023-12-19 15:26:01,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:26:01,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 15:26:01,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:26:01,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 15:26:01,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 15:26:01,420 INFO L87 Difference]: Start difference. First operand 565 states and 679 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) [2023-12-19 15:26:04,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 15:26:07,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 15:26:09,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 15:26:12,527 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 15:26:16,846 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 15:26:22,394 WARN L293 SmtUtils]: Spent 5.41s on a formula simplification that was a NOOP. DAG size: 46 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 15:26:26,900 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 [] [2023-12-19 15:26:28,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:26:28,065 INFO L93 Difference]: Finished difference Result 1315 states and 1545 transitions. [2023-12-19 15:26:28,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 15:26:28,067 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 [2023-12-19 15:26:28,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:26:28,068 INFO L225 Difference]: With dead ends: 1315 [2023-12-19 15:26:28,069 INFO L226 Difference]: Without dead ends: 777 [2023-12-19 15:26:28,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 15:26:28,069 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 63 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.0s 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, 21.0s IncrementalHoareTripleChecker+Time [2023-12-19 15:26:28,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 469 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 208 Invalid, 1 Unknown, 0 Unchecked, 21.0s Time] [2023-12-19 15:26:28,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2023-12-19 15:26:28,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 709. [2023-12-19 15:26:28,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 709 states, 684 states have (on average 1.141812865497076) internal successors, (781), 684 states have internal predecessors, (781), 19 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-19 15:26:28,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 819 transitions. [2023-12-19 15:26:28,155 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 819 transitions. Word has length 150 [2023-12-19 15:26:28,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:26:28,155 INFO L495 AbstractCegarLoop]: Abstraction has 709 states and 819 transitions. [2023-12-19 15:26:28,155 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) [2023-12-19 15:26:28,155 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 819 transitions. [2023-12-19 15:26:28,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-19 15:26:28,157 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:26:28,157 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] [2023-12-19 15:26:28,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 15:26:28,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2023-12-19 15:26:28,368 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:26:28,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:26:28,368 INFO L85 PathProgramCache]: Analyzing trace with hash -677729654, now seen corresponding path program 1 times [2023-12-19 15:26:28,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:26:28,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177714948] [2023-12-19 15:26:28,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:26:28,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:26:28,400 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:26:28,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1163783930] [2023-12-19 15:26:28,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:26:28,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:26:28,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:26:28,402 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:26:28,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 15:26:28,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:26:28,648 INFO L262 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 15:26:28,650 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:26:28,672 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-19 15:26:28,673 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:26:28,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:26:28,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177714948] [2023-12-19 15:26:28,673 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:26:28,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163783930] [2023-12-19 15:26:28,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163783930] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:26:28,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:26:28,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 15:26:28,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772193992] [2023-12-19 15:26:28,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:26:28,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 15:26:28,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:26:28,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 15:26:28,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 15:26:28,674 INFO L87 Difference]: Start difference. First operand 709 states and 819 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) [2023-12-19 15:26:28,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:26:28,803 INFO L93 Difference]: Finished difference Result 1427 states and 1648 transitions. [2023-12-19 15:26:28,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 15:26:28,803 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 [2023-12-19 15:26:28,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:26:28,805 INFO L225 Difference]: With dead ends: 1427 [2023-12-19 15:26:28,805 INFO L226 Difference]: Without dead ends: 719 [2023-12-19 15:26:28,806 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 [2023-12-19 15:26:28,806 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 [2023-12-19 15:26:28,806 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] [2023-12-19 15:26:28,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2023-12-19 15:26:28,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 710. [2023-12-19 15:26:28,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 685 states have (on average 1.1416058394160584) internal successors, (782), 685 states have internal predecessors, (782), 19 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-19 15:26:28,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 820 transitions. [2023-12-19 15:26:28,879 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 820 transitions. Word has length 150 [2023-12-19 15:26:28,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:26:28,880 INFO L495 AbstractCegarLoop]: Abstraction has 710 states and 820 transitions. [2023-12-19 15:26:28,880 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) [2023-12-19 15:26:28,880 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 820 transitions. [2023-12-19 15:26:28,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-19 15:26:28,881 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:26:28,881 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] [2023-12-19 15:26:28,888 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-19 15:26:29,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:26:29,089 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:26:29,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:26:29,089 INFO L85 PathProgramCache]: Analyzing trace with hash -346742258, now seen corresponding path program 1 times [2023-12-19 15:26:29,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:26:29,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655960212] [2023-12-19 15:26:29,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:26:29,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:26:29,106 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:26:29,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1060987692] [2023-12-19 15:26:29,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:26:29,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:26:29,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:26:29,108 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:26:29,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 15:26:29,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:26:29,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-19 15:26:29,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:26:29,415 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 [2023-12-19 15:26:29,469 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2023-12-19 15:26:29,469 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 15:26:29,597 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-19 15:26:29,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:26:29,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655960212] [2023-12-19 15:26:29,598 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:26:29,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060987692] [2023-12-19 15:26:29,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060987692] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 15:26:29,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 15:26:29,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 12 [2023-12-19 15:26:29,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361969917] [2023-12-19 15:26:29,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:26:29,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 15:26:29,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:26:29,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 15:26:29,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-19 15:26:29,599 INFO L87 Difference]: Start difference. First operand 710 states and 820 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) [2023-12-19 15:26:29,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:26:29,983 INFO L93 Difference]: Finished difference Result 1537 states and 1783 transitions. [2023-12-19 15:26:29,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 15:26:29,983 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 [2023-12-19 15:26:29,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:26:29,984 INFO L225 Difference]: With dead ends: 1537 [2023-12-19 15:26:29,984 INFO L226 Difference]: Without dead ends: 0 [2023-12-19 15:26:29,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2023-12-19 15:26:29,985 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 130 mSDsluCounter, 1035 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 1276 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 15:26:29,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 1276 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 15:26:29,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-19 15:26:29,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-19 15:26:29,986 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) [2023-12-19 15:26:29,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-19 15:26:29,986 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 150 [2023-12-19 15:26:29,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:26:29,986 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-19 15:26:29,986 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) [2023-12-19 15:26:29,986 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-19 15:26:29,986 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-19 15:26:29,988 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 15:26:29,994 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-19 15:26:30,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2023-12-19 15:26:30,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. Received shutdown request... [2023-12-19 15:38:12,091 WARN L619 AbstractCegarLoop]: Verification canceled: while PolyPacSimplificationTermWalker was simplifying a ∨-6-6-6-9-6-9-6-14-6-22-5-22-5-22-5-22-5-22-5-22-5-22-5-22-5-13-5-13-5-13-5-13-5-13-5-13-5-13-5-13-5-13-5-13-5-13-5-13-5-13-3-13-3-13-3-13-3-13-3-13-1 term,while PolyPacSimplificationTermWalker was simplifying 11 xjuncts wrt. a ∧-103-22-8-22-8-22-6-22-6-22-5-22-5-22-5-22-5-22-5-22-5-22-5-22-5-13-5-13-5-13-5-13-5-13-5-13-5-13-5-13-5-13-5-13-5-13-5-13-5-13-3-13-3-13-3-13-3-13-3-13-1 context. [2023-12-19 15:38:12,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-19 15:38:12,094 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 [2023-12-19 15:38:12,118 INFO L257 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2023-12-19 15:38:12,120 INFO L158 Benchmark]: Toolchain (without parser) took 836128.90ms. Allocated memory was 197.1MB in the beginning and 650.1MB in the end (delta: 453.0MB). Free memory was 137.4MB in the beginning and 281.7MB in the end (delta: -144.3MB). Peak memory consumption was 309.5MB. Max. memory is 8.0GB. [2023-12-19 15:38:12,120 INFO L158 Benchmark]: CDTParser took 0.57ms. Allocated memory is still 197.1MB. Free memory is still 150.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 15:38:12,120 INFO L158 Benchmark]: CACSL2BoogieTranslator took 344.72ms. Allocated memory is still 197.1MB. Free memory was 137.1MB in the beginning and 121.5MB in the end (delta: 15.6MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-19 15:38:12,120 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.93ms. Allocated memory is still 197.1MB. Free memory was 121.5MB in the beginning and 116.9MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-19 15:38:12,120 INFO L158 Benchmark]: Boogie Preprocessor took 71.45ms. Allocated memory is still 197.1MB. Free memory was 116.9MB in the beginning and 111.9MB in the end (delta: 5.0MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-19 15:38:12,120 INFO L158 Benchmark]: RCFGBuilder took 782.58ms. Allocated memory was 197.1MB in the beginning and 247.5MB in the end (delta: 50.3MB). Free memory was 111.9MB in the beginning and 177.1MB in the end (delta: -65.2MB). Peak memory consumption was 7.2MB. Max. memory is 8.0GB. [2023-12-19 15:38:12,120 INFO L158 Benchmark]: TraceAbstraction took 834845.28ms. Allocated memory was 247.5MB in the beginning and 650.1MB in the end (delta: 402.7MB). Free memory was 176.1MB in the beginning and 281.7MB in the end (delta: -105.6MB). Peak memory consumption was 297.0MB. Max. memory is 8.0GB. [2023-12-19 15:38:12,121 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.57ms. Allocated memory is still 197.1MB. Free memory is still 150.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 344.72ms. Allocated memory is still 197.1MB. Free memory was 137.1MB in the beginning and 121.5MB in the end (delta: 15.6MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 78.93ms. Allocated memory is still 197.1MB. Free memory was 121.5MB in the beginning and 116.9MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 71.45ms. Allocated memory is still 197.1MB. Free memory was 116.9MB in the beginning and 111.9MB in the end (delta: 5.0MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 782.58ms. Allocated memory was 197.1MB in the beginning and 247.5MB in the end (delta: 50.3MB). Free memory was 111.9MB in the beginning and 177.1MB in the end (delta: -65.2MB). Peak memory consumption was 7.2MB. Max. memory is 8.0GB. * TraceAbstraction took 834845.28ms. Allocated memory was 247.5MB in the beginning and 650.1MB in the end (delta: 402.7MB). Free memory was 176.1MB in the beginning and 281.7MB in the end (delta: -105.6MB). Peak memory consumption was 297.0MB. 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 ∨-6-6-6-9-6-9-6-14-6-22-5-22-5-22-5-22-5-22-5-22-5-22-5-22-5-13-5-13-5-13-5-13-5-13-5-13-5-13-5-13-5-13-5-13-5-13-5-13-5-13-3-13-3-13-3-13-3-13-3-13-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-25-9-14-14-22-22-7-22-7-22-5-22-9-22-13-22-13-22-10-22-13-22-13-22-11-13-11-13-11-13-11-13-11-13-11-13-13-13-13-13-13-13-5-13-5-13-5-13-5-13-3-13-3-13-3-13-3-13-3-13-1 context. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown