/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-64bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n4_w8_d8_e0.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 18:54:20,459 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 18:54:20,529 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2023-12-16 18:54:20,532 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 18:54:20,533 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 18:54:20,551 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 18:54:20,553 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 18:54:20,553 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 18:54:20,553 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 18:54:20,556 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 18:54:20,557 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 18:54:20,557 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 18:54:20,557 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 18:54:20,558 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 18:54:20,558 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 18:54:20,559 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 18:54:20,559 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 18:54:20,559 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 18:54:20,559 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 18:54:20,559 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 18:54:20,559 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 18:54:20,560 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 18:54:20,560 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 18:54:20,560 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 18:54:20,560 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 18:54:20,561 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 18:54:20,561 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 18:54:20,561 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 18:54:20,561 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 18:54:20,561 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 18:54:20,562 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 18:54:20,562 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 18:54:20,562 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 18:54:20,562 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 18:54:20,562 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 18:54:20,563 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 18:54:20,563 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 18:54:20,563 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 18:54:20,563 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 18:54:20,563 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 18:54:20,563 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-16 18:54:20,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 18:54:20,795 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 18:54:20,797 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 18:54:20,798 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 18:54:20,799 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 18:54:20,800 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n4_w8_d8_e0.c [2023-12-16 18:54:22,033 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 18:54:22,390 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 18:54:22,391 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n4_w8_d8_e0.c [2023-12-16 18:54:22,415 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1702e47d2/3de5192bbaa94f21a422647083b70549/FLAGb42a309b3 [2023-12-16 18:54:22,428 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1702e47d2/3de5192bbaa94f21a422647083b70549 [2023-12-16 18:54:22,430 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 18:54:22,432 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 18:54:22,433 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 18:54:22,433 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 18:54:22,438 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 18:54:22,439 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:54:22" (1/1) ... [2023-12-16 18:54:22,440 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c5ef5a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:54:22, skipping insertion in model container [2023-12-16 18:54:22,440 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:54:22" (1/1) ... [2023-12-16 18:54:22,520 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 18:54:22,711 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n4_w8_d8_e0.c[1269,1282] [2023-12-16 18:54:23,092 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 18:54:23,100 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 18:54:23,110 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n4_w8_d8_e0.c[1269,1282] [2023-12-16 18:54:23,239 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 18:54:23,248 INFO L206 MainTranslator]: Completed translation [2023-12-16 18:54:23,249 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:54:23 WrapperNode [2023-12-16 18:54:23,249 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 18:54:23,250 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 18:54:23,250 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 18:54:23,250 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 18:54:23,254 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:54:23" (1/1) ... [2023-12-16 18:54:23,349 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:54:23" (1/1) ... [2023-12-16 18:54:23,739 INFO L138 Inliner]: procedures = 17, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 5452 [2023-12-16 18:54:23,740 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 18:54:23,741 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 18:54:23,741 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 18:54:23,741 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 18:54:23,749 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:54:23" (1/1) ... [2023-12-16 18:54:23,749 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:54:23" (1/1) ... [2023-12-16 18:54:23,854 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:54:23" (1/1) ... [2023-12-16 18:54:24,067 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 18:54:24,068 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:54:23" (1/1) ... [2023-12-16 18:54:24,068 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:54:23" (1/1) ... [2023-12-16 18:54:24,268 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:54:23" (1/1) ... [2023-12-16 18:54:24,291 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:54:23" (1/1) ... [2023-12-16 18:54:24,339 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:54:23" (1/1) ... [2023-12-16 18:54:24,359 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:54:23" (1/1) ... [2023-12-16 18:54:24,436 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 18:54:24,437 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 18:54:24,437 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 18:54:24,437 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 18:54:24,438 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:54:23" (1/1) ... [2023-12-16 18:54:24,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 18:54:24,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 18:54:24,461 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) [2023-12-16 18:54:24,496 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 [2023-12-16 18:54:24,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 18:54:24,542 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 18:54:24,542 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 18:54:24,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 18:54:24,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 18:54:24,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 18:54:24,903 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 18:54:24,905 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 18:54:27,042 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 18:54:27,119 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 18:54:27,119 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 18:54:27,119 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:54:27 BoogieIcfgContainer [2023-12-16 18:54:27,120 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 18:54:27,121 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 18:54:27,121 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 18:54:27,123 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 18:54:27,124 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 06:54:22" (1/3) ... [2023-12-16 18:54:27,124 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d2e7472 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:54:27, skipping insertion in model container [2023-12-16 18:54:27,124 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:54:23" (2/3) ... [2023-12-16 18:54:27,124 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d2e7472 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:54:27, skipping insertion in model container [2023-12-16 18:54:27,125 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:54:27" (3/3) ... [2023-12-16 18:54:27,125 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.arbitrated_top_n4_w8_d8_e0.c [2023-12-16 18:54:27,137 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 18:54:27,137 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 18:54:27,199 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 18:54:27,204 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;@37556a29, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 18:54:27,204 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 18:54:27,210 INFO L276 IsEmpty]: Start isEmpty. Operand has 1067 states, 1051 states have (on average 1.6574690770694576) internal successors, (1742), 1052 states have internal predecessors, (1742), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-16 18:54:27,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2023-12-16 18:54:27,229 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:54:27,230 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:54:27,231 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:54:27,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:54:27,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1440440509, now seen corresponding path program 1 times [2023-12-16 18:54:27,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:54:27,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121253552] [2023-12-16 18:54:27,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:54:27,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:54:27,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:29,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-16 18:54:29,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:29,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-16 18:54:29,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:29,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-16 18:54:29,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:29,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-16 18:54:29,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:29,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-12-16 18:54:29,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:29,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2023-12-16 18:54:29,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:29,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-12-16 18:54:29,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:29,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-12-16 18:54:29,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:29,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2023-12-16 18:54:29,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:29,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2023-12-16 18:54:29,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:29,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2023-12-16 18:54:29,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:29,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2023-12-16 18:54:29,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:29,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2023-12-16 18:54:29,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:29,345 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-16 18:54:29,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:54:29,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121253552] [2023-12-16 18:54:29,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121253552] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:54:29,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:54:29,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 18:54:29,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607057807] [2023-12-16 18:54:29,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:54:29,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 18:54:29,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:54:29,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 18:54:29,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 18:54:29,375 INFO L87 Difference]: Start difference. First operand has 1067 states, 1051 states have (on average 1.6574690770694576) internal successors, (1742), 1052 states have internal predecessors, (1742), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-16 18:54:30,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:54:30,049 INFO L93 Difference]: Finished difference Result 1972 states and 3282 transitions. [2023-12-16 18:54:30,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 18:54:30,051 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 478 [2023-12-16 18:54:30,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:54:30,064 INFO L225 Difference]: With dead ends: 1972 [2023-12-16 18:54:30,064 INFO L226 Difference]: Without dead ends: 1065 [2023-12-16 18:54:30,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:54:30,083 INFO L413 NwaCegarLoop]: 1301 mSDtfsCounter, 1488 mSDsluCounter, 1303 mSDsCounter, 0 mSdLazyCounter, 931 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 2604 SdHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 18:54:30,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 2604 Invalid, 932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 931 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 18:54:30,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2023-12-16 18:54:30,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1065. [2023-12-16 18:54:30,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 1050 states have (on average 1.6523809523809523) internal successors, (1735), 1050 states have internal predecessors, (1735), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-16 18:54:30,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1761 transitions. [2023-12-16 18:54:30,174 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1761 transitions. Word has length 478 [2023-12-16 18:54:30,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:54:30,176 INFO L495 AbstractCegarLoop]: Abstraction has 1065 states and 1761 transitions. [2023-12-16 18:54:30,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-16 18:54:30,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1761 transitions. [2023-12-16 18:54:30,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2023-12-16 18:54:30,191 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:54:30,191 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:54:30,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 18:54:30,192 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:54:30,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:54:30,192 INFO L85 PathProgramCache]: Analyzing trace with hash -426204449, now seen corresponding path program 1 times [2023-12-16 18:54:30,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:54:30,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065800362] [2023-12-16 18:54:30,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:54:30,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:54:30,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:31,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-16 18:54:31,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:31,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-16 18:54:31,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:31,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-16 18:54:31,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:31,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-16 18:54:31,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:31,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-12-16 18:54:31,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:31,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2023-12-16 18:54:31,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:31,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-12-16 18:54:31,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:31,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-12-16 18:54:31,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:31,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2023-12-16 18:54:31,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:31,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2023-12-16 18:54:31,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:31,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2023-12-16 18:54:31,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:31,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2023-12-16 18:54:31,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:31,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2023-12-16 18:54:31,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:31,123 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-16 18:54:31,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:54:31,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065800362] [2023-12-16 18:54:31,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065800362] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:54:31,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:54:31,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 18:54:31,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386753415] [2023-12-16 18:54:31,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:54:31,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:54:31,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:54:31,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:54:31,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:54:31,126 INFO L87 Difference]: Start difference. First operand 1065 states and 1761 transitions. Second operand has 5 states, 5 states have (on average 83.4) internal successors, (417), 5 states have internal predecessors, (417), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-16 18:54:31,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:54:31,676 INFO L93 Difference]: Finished difference Result 2088 states and 3444 transitions. [2023-12-16 18:54:31,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 18:54:31,676 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 83.4) internal successors, (417), 5 states have internal predecessors, (417), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 479 [2023-12-16 18:54:31,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:54:31,681 INFO L225 Difference]: With dead ends: 2088 [2023-12-16 18:54:31,681 INFO L226 Difference]: Without dead ends: 1065 [2023-12-16 18:54:31,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 18:54:31,684 INFO L413 NwaCegarLoop]: 1754 mSDtfsCounter, 1771 mSDsluCounter, 3076 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1779 SdHoareTripleChecker+Valid, 4830 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 18:54:31,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1779 Valid, 4830 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 18:54:31,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2023-12-16 18:54:31,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1065. [2023-12-16 18:54:31,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 1050 states have (on average 1.6514285714285715) internal successors, (1734), 1050 states have internal predecessors, (1734), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-16 18:54:31,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1760 transitions. [2023-12-16 18:54:31,708 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1760 transitions. Word has length 479 [2023-12-16 18:54:31,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:54:31,708 INFO L495 AbstractCegarLoop]: Abstraction has 1065 states and 1760 transitions. [2023-12-16 18:54:31,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.4) internal successors, (417), 5 states have internal predecessors, (417), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-16 18:54:31,709 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1760 transitions. [2023-12-16 18:54:31,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2023-12-16 18:54:31,713 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:54:31,714 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:54:31,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 18:54:31,714 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:54:31,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:54:31,714 INFO L85 PathProgramCache]: Analyzing trace with hash -831427749, now seen corresponding path program 1 times [2023-12-16 18:54:31,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:54:31,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332128619] [2023-12-16 18:54:31,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:54:31,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:54:31,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:32,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-16 18:54:32,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:32,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-16 18:54:32,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:32,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-16 18:54:32,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:32,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-16 18:54:32,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:32,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-12-16 18:54:32,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:32,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-12-16 18:54:32,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:32,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-12-16 18:54:32,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:32,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-12-16 18:54:32,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:32,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-12-16 18:54:32,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:32,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2023-12-16 18:54:32,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:32,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2023-12-16 18:54:32,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:32,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2023-12-16 18:54:32,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:32,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2023-12-16 18:54:32,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:32,550 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-16 18:54:32,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:54:32,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332128619] [2023-12-16 18:54:32,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332128619] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:54:32,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:54:32,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 18:54:32,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795210056] [2023-12-16 18:54:32,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:54:32,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:54:32,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:54:32,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:54:32,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:54:32,557 INFO L87 Difference]: Start difference. First operand 1065 states and 1760 transitions. Second operand has 5 states, 5 states have (on average 83.6) internal successors, (418), 5 states have internal predecessors, (418), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-16 18:54:33,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:54:33,219 INFO L93 Difference]: Finished difference Result 1970 states and 3254 transitions. [2023-12-16 18:54:33,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 18:54:33,220 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 83.6) internal successors, (418), 5 states have internal predecessors, (418), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 480 [2023-12-16 18:54:33,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:54:33,224 INFO L225 Difference]: With dead ends: 1970 [2023-12-16 18:54:33,224 INFO L226 Difference]: Without dead ends: 1065 [2023-12-16 18:54:33,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 18:54:33,228 INFO L413 NwaCegarLoop]: 1301 mSDtfsCounter, 1607 mSDsluCounter, 1319 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1612 SdHoareTripleChecker+Valid, 2620 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 18:54:33,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1612 Valid, 2620 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 926 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 18:54:33,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2023-12-16 18:54:33,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1065. [2023-12-16 18:54:33,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 1050 states have (on average 1.6504761904761904) internal successors, (1733), 1050 states have internal predecessors, (1733), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-16 18:54:33,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1759 transitions. [2023-12-16 18:54:33,256 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1759 transitions. Word has length 480 [2023-12-16 18:54:33,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:54:33,256 INFO L495 AbstractCegarLoop]: Abstraction has 1065 states and 1759 transitions. [2023-12-16 18:54:33,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.6) internal successors, (418), 5 states have internal predecessors, (418), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-16 18:54:33,257 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1759 transitions. [2023-12-16 18:54:33,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2023-12-16 18:54:33,263 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:54:33,263 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:54:33,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 18:54:33,263 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:54:33,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:54:33,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1939246895, now seen corresponding path program 1 times [2023-12-16 18:54:33,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:54:33,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607808683] [2023-12-16 18:54:33,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:54:33,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:54:33,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:34,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-16 18:54:34,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:34,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-16 18:54:34,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:34,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-16 18:54:34,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:34,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-16 18:54:34,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:34,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-12-16 18:54:34,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:34,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-12-16 18:54:34,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:34,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-12-16 18:54:34,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:34,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-12-16 18:54:34,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:34,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-12-16 18:54:34,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:34,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2023-12-16 18:54:34,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:34,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2023-12-16 18:54:34,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:34,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2023-12-16 18:54:34,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:34,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2023-12-16 18:54:34,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:34,058 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-16 18:54:34,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:54:34,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607808683] [2023-12-16 18:54:34,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607808683] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:54:34,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:54:34,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 18:54:34,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140611205] [2023-12-16 18:54:34,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:54:34,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:54:34,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:54:34,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:54:34,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:54:34,066 INFO L87 Difference]: Start difference. First operand 1065 states and 1759 transitions. Second operand has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-16 18:54:34,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:54:34,676 INFO L93 Difference]: Finished difference Result 1970 states and 3252 transitions. [2023-12-16 18:54:34,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 18:54:34,676 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 481 [2023-12-16 18:54:34,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:54:34,680 INFO L225 Difference]: With dead ends: 1970 [2023-12-16 18:54:34,680 INFO L226 Difference]: Without dead ends: 1065 [2023-12-16 18:54:34,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 18:54:34,682 INFO L413 NwaCegarLoop]: 1301 mSDtfsCounter, 1567 mSDsluCounter, 1319 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1572 SdHoareTripleChecker+Valid, 2620 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 18:54:34,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1572 Valid, 2620 Invalid, 925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 18:54:34,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2023-12-16 18:54:34,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1065. [2023-12-16 18:54:34,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 1050 states have (on average 1.6495238095238096) internal successors, (1732), 1050 states have internal predecessors, (1732), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-16 18:54:34,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1758 transitions. [2023-12-16 18:54:34,699 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1758 transitions. Word has length 481 [2023-12-16 18:54:34,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:54:34,700 INFO L495 AbstractCegarLoop]: Abstraction has 1065 states and 1758 transitions. [2023-12-16 18:54:34,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-16 18:54:34,700 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1758 transitions. [2023-12-16 18:54:34,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2023-12-16 18:54:34,703 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:54:34,703 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:54:34,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 18:54:34,703 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:54:34,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:54:34,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1297597559, now seen corresponding path program 1 times [2023-12-16 18:54:34,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:54:34,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390359826] [2023-12-16 18:54:34,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:54:34,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:54:34,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:35,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-16 18:54:35,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:35,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-16 18:54:35,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:35,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-16 18:54:35,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:35,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-16 18:54:35,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:35,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-12-16 18:54:35,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:35,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-12-16 18:54:35,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:35,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-12-16 18:54:35,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:35,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-12-16 18:54:35,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:35,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-12-16 18:54:35,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:35,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2023-12-16 18:54:35,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:35,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2023-12-16 18:54:35,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:35,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2023-12-16 18:54:35,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:35,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2023-12-16 18:54:35,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:35,403 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-16 18:54:35,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:54:35,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390359826] [2023-12-16 18:54:35,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390359826] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:54:35,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:54:35,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 18:54:35,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125190758] [2023-12-16 18:54:35,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:54:35,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:54:35,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:54:35,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:54:35,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:54:35,406 INFO L87 Difference]: Start difference. First operand 1065 states and 1758 transitions. Second operand has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-16 18:54:36,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:54:36,047 INFO L93 Difference]: Finished difference Result 1970 states and 3250 transitions. [2023-12-16 18:54:36,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 18:54:36,047 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 482 [2023-12-16 18:54:36,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:54:36,051 INFO L225 Difference]: With dead ends: 1970 [2023-12-16 18:54:36,051 INFO L226 Difference]: Without dead ends: 1065 [2023-12-16 18:54:36,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 18:54:36,053 INFO L413 NwaCegarLoop]: 1301 mSDtfsCounter, 1527 mSDsluCounter, 1319 mSDsCounter, 0 mSdLazyCounter, 922 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1532 SdHoareTripleChecker+Valid, 2620 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 18:54:36,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1532 Valid, 2620 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 922 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 18:54:36,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2023-12-16 18:54:36,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1065. [2023-12-16 18:54:36,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 1050 states have (on average 1.6485714285714286) internal successors, (1731), 1050 states have internal predecessors, (1731), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-16 18:54:36,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1757 transitions. [2023-12-16 18:54:36,068 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1757 transitions. Word has length 482 [2023-12-16 18:54:36,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:54:36,069 INFO L495 AbstractCegarLoop]: Abstraction has 1065 states and 1757 transitions. [2023-12-16 18:54:36,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-16 18:54:36,069 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1757 transitions. [2023-12-16 18:54:36,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2023-12-16 18:54:36,072 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:54:36,072 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:54:36,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 18:54:36,072 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:54:36,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:54:36,072 INFO L85 PathProgramCache]: Analyzing trace with hash -580910435, now seen corresponding path program 1 times [2023-12-16 18:54:36,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:54:36,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330305057] [2023-12-16 18:54:36,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:54:36,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:54:36,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:36,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-16 18:54:36,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:36,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-16 18:54:36,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:36,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-16 18:54:36,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:36,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-16 18:54:36,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:36,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-12-16 18:54:36,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:36,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-12-16 18:54:36,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:36,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-12-16 18:54:36,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:36,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-12-16 18:54:36,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:36,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-12-16 18:54:36,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:36,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2023-12-16 18:54:36,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:36,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2023-12-16 18:54:36,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:36,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2023-12-16 18:54:36,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:36,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2023-12-16 18:54:37,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:37,002 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-16 18:54:37,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:54:37,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330305057] [2023-12-16 18:54:37,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330305057] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:54:37,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:54:37,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 18:54:37,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977438408] [2023-12-16 18:54:37,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:54:37,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 18:54:37,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:54:37,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 18:54:37,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 18:54:37,005 INFO L87 Difference]: Start difference. First operand 1065 states and 1757 transitions. Second operand has 4 states, 4 states have (on average 105.25) internal successors, (421), 4 states have internal predecessors, (421), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-16 18:54:37,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:54:37,162 INFO L93 Difference]: Finished difference Result 1970 states and 3248 transitions. [2023-12-16 18:54:37,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 18:54:37,163 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 105.25) internal successors, (421), 4 states have internal predecessors, (421), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 483 [2023-12-16 18:54:37,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:54:37,166 INFO L225 Difference]: With dead ends: 1970 [2023-12-16 18:54:37,167 INFO L226 Difference]: Without dead ends: 1065 [2023-12-16 18:54:37,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:54:37,172 INFO L413 NwaCegarLoop]: 1663 mSDtfsCounter, 1437 mSDsluCounter, 1665 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1437 SdHoareTripleChecker+Valid, 3328 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 18:54:37,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1437 Valid, 3328 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 18:54:37,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2023-12-16 18:54:37,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1065. [2023-12-16 18:54:37,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 1050 states have (on average 1.6466666666666667) internal successors, (1729), 1050 states have internal predecessors, (1729), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-16 18:54:37,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1755 transitions. [2023-12-16 18:54:37,190 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1755 transitions. Word has length 483 [2023-12-16 18:54:37,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:54:37,190 INFO L495 AbstractCegarLoop]: Abstraction has 1065 states and 1755 transitions. [2023-12-16 18:54:37,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 105.25) internal successors, (421), 4 states have internal predecessors, (421), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-16 18:54:37,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1755 transitions. [2023-12-16 18:54:37,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2023-12-16 18:54:37,193 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:54:37,193 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:54:37,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 18:54:37,193 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:54:37,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:54:37,194 INFO L85 PathProgramCache]: Analyzing trace with hash 2029598077, now seen corresponding path program 1 times [2023-12-16 18:54:37,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:54:37,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626881358] [2023-12-16 18:54:37,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:54:37,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:54:37,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:37,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-16 18:54:37,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:37,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-16 18:54:37,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:37,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-16 18:54:37,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:37,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-16 18:54:37,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:37,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-12-16 18:54:37,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:37,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-12-16 18:54:37,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:37,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-12-16 18:54:37,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:37,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-12-16 18:54:37,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:37,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-12-16 18:54:37,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:37,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2023-12-16 18:54:37,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:37,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2023-12-16 18:54:37,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:37,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2023-12-16 18:54:37,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:37,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2023-12-16 18:54:37,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:37,787 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-16 18:54:37,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:54:37,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626881358] [2023-12-16 18:54:37,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626881358] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:54:37,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:54:37,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 18:54:37,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546690947] [2023-12-16 18:54:37,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:54:37,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:54:37,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:54:37,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:54:37,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:54:37,789 INFO L87 Difference]: Start difference. First operand 1065 states and 1755 transitions. Second operand has 5 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-16 18:54:37,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:54:37,944 INFO L93 Difference]: Finished difference Result 2026 states and 3334 transitions. [2023-12-16 18:54:37,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 18:54:37,945 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 484 [2023-12-16 18:54:37,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:54:37,948 INFO L225 Difference]: With dead ends: 2026 [2023-12-16 18:54:37,948 INFO L226 Difference]: Without dead ends: 1065 [2023-12-16 18:54:37,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 18:54:37,950 INFO L413 NwaCegarLoop]: 1738 mSDtfsCounter, 1612 mSDsluCounter, 3416 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1612 SdHoareTripleChecker+Valid, 5154 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 18:54:37,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1612 Valid, 5154 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 18:54:37,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2023-12-16 18:54:37,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1065. [2023-12-16 18:54:37,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 1050 states have (on average 1.6457142857142857) internal successors, (1728), 1050 states have internal predecessors, (1728), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-16 18:54:37,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1754 transitions. [2023-12-16 18:54:37,999 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1754 transitions. Word has length 484 [2023-12-16 18:54:37,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:54:37,999 INFO L495 AbstractCegarLoop]: Abstraction has 1065 states and 1754 transitions. [2023-12-16 18:54:37,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-16 18:54:37,999 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1754 transitions. [2023-12-16 18:54:38,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2023-12-16 18:54:38,002 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:54:38,002 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:54:38,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 18:54:38,002 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:54:38,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:54:38,002 INFO L85 PathProgramCache]: Analyzing trace with hash 335009149, now seen corresponding path program 1 times [2023-12-16 18:54:38,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:54:38,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571634395] [2023-12-16 18:54:38,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:54:38,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:54:38,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:38,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-16 18:54:38,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:38,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-16 18:54:38,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:38,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-16 18:54:38,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:38,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-16 18:54:38,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:38,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-12-16 18:54:38,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:38,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-12-16 18:54:38,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:38,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-12-16 18:54:38,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:38,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-12-16 18:54:38,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:38,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-12-16 18:54:38,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:38,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2023-12-16 18:54:38,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:38,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2023-12-16 18:54:38,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:38,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2023-12-16 18:54:38,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:38,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2023-12-16 18:54:38,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:38,544 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-16 18:54:38,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:54:38,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571634395] [2023-12-16 18:54:38,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571634395] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:54:38,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:54:38,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 18:54:38,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573788648] [2023-12-16 18:54:38,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:54:38,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:54:38,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:54:38,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:54:38,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:54:38,546 INFO L87 Difference]: Start difference. First operand 1065 states and 1754 transitions. Second operand has 5 states, 5 states have (on average 84.6) internal successors, (423), 5 states have internal predecessors, (423), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-16 18:54:38,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:54:38,725 INFO L93 Difference]: Finished difference Result 1970 states and 3242 transitions. [2023-12-16 18:54:38,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 18:54:38,725 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 84.6) internal successors, (423), 5 states have internal predecessors, (423), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 485 [2023-12-16 18:54:38,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:54:38,728 INFO L225 Difference]: With dead ends: 1970 [2023-12-16 18:54:38,728 INFO L226 Difference]: Without dead ends: 1065 [2023-12-16 18:54:38,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 18:54:38,730 INFO L413 NwaCegarLoop]: 1663 mSDtfsCounter, 1724 mSDsluCounter, 1681 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1737 SdHoareTripleChecker+Valid, 3344 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 18:54:38,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1737 Valid, 3344 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 18:54:38,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2023-12-16 18:54:38,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1065. [2023-12-16 18:54:38,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 1050 states have (on average 1.6447619047619049) internal successors, (1727), 1050 states have internal predecessors, (1727), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-16 18:54:38,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1753 transitions. [2023-12-16 18:54:38,745 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1753 transitions. Word has length 485 [2023-12-16 18:54:38,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:54:38,746 INFO L495 AbstractCegarLoop]: Abstraction has 1065 states and 1753 transitions. [2023-12-16 18:54:38,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.6) internal successors, (423), 5 states have internal predecessors, (423), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-16 18:54:38,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1753 transitions. [2023-12-16 18:54:38,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2023-12-16 18:54:38,748 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:54:38,749 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:54:38,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 18:54:38,749 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:54:38,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:54:38,749 INFO L85 PathProgramCache]: Analyzing trace with hash -79763881, now seen corresponding path program 1 times [2023-12-16 18:54:38,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:54:38,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263728312] [2023-12-16 18:54:38,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:54:38,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:54:38,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:39,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-16 18:54:39,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:39,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-16 18:54:39,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:39,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-16 18:54:39,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:39,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-16 18:54:39,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:39,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-12-16 18:54:39,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:39,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-12-16 18:54:39,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:39,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-12-16 18:54:39,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:39,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-12-16 18:54:39,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:39,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-12-16 18:54:39,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:39,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2023-12-16 18:54:39,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:39,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2023-12-16 18:54:39,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:39,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2023-12-16 18:54:39,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:39,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2023-12-16 18:54:39,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:39,359 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-16 18:54:39,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:54:39,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263728312] [2023-12-16 18:54:39,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263728312] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:54:39,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:54:39,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 18:54:39,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167372500] [2023-12-16 18:54:39,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:54:39,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:54:39,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:54:39,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:54:39,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:54:39,362 INFO L87 Difference]: Start difference. First operand 1065 states and 1753 transitions. Second operand has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-16 18:54:39,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:54:39,527 INFO L93 Difference]: Finished difference Result 1970 states and 3240 transitions. [2023-12-16 18:54:39,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 18:54:39,528 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 486 [2023-12-16 18:54:39,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:54:39,531 INFO L225 Difference]: With dead ends: 1970 [2023-12-16 18:54:39,531 INFO L226 Difference]: Without dead ends: 1065 [2023-12-16 18:54:39,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 18:54:39,534 INFO L413 NwaCegarLoop]: 1663 mSDtfsCounter, 1685 mSDsluCounter, 1681 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1698 SdHoareTripleChecker+Valid, 3344 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 18:54:39,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1698 Valid, 3344 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 18:54:39,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2023-12-16 18:54:39,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1065. [2023-12-16 18:54:39,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 1050 states have (on average 1.6438095238095238) internal successors, (1726), 1050 states have internal predecessors, (1726), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-16 18:54:39,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1752 transitions. [2023-12-16 18:54:39,550 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1752 transitions. Word has length 486 [2023-12-16 18:54:39,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:54:39,551 INFO L495 AbstractCegarLoop]: Abstraction has 1065 states and 1752 transitions. [2023-12-16 18:54:39,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-16 18:54:39,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1752 transitions. [2023-12-16 18:54:39,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2023-12-16 18:54:39,554 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:54:39,554 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:54:39,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 18:54:39,554 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:54:39,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:54:39,555 INFO L85 PathProgramCache]: Analyzing trace with hash -937721699, now seen corresponding path program 1 times [2023-12-16 18:54:39,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:54:39,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517033283] [2023-12-16 18:54:39,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:54:39,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:54:39,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:40,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-16 18:54:40,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:40,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-16 18:54:40,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:40,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-16 18:54:40,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:40,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-16 18:54:40,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:40,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-12-16 18:54:40,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:40,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-12-16 18:54:40,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:40,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-12-16 18:54:40,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:40,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-12-16 18:54:40,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:40,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-12-16 18:54:40,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:40,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2023-12-16 18:54:40,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:40,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2023-12-16 18:54:40,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:40,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2023-12-16 18:54:40,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:40,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2023-12-16 18:54:40,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:40,146 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-16 18:54:40,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:54:40,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517033283] [2023-12-16 18:54:40,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517033283] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:54:40,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:54:40,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 18:54:40,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862563165] [2023-12-16 18:54:40,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:54:40,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:54:40,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:54:40,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:54:40,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:54:40,148 INFO L87 Difference]: Start difference. First operand 1065 states and 1752 transitions. Second operand has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-16 18:54:40,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:54:40,326 INFO L93 Difference]: Finished difference Result 1970 states and 3238 transitions. [2023-12-16 18:54:40,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 18:54:40,327 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 487 [2023-12-16 18:54:40,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:54:40,330 INFO L225 Difference]: With dead ends: 1970 [2023-12-16 18:54:40,330 INFO L226 Difference]: Without dead ends: 1065 [2023-12-16 18:54:40,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 18:54:40,332 INFO L413 NwaCegarLoop]: 1663 mSDtfsCounter, 3033 mSDsluCounter, 1665 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3046 SdHoareTripleChecker+Valid, 3328 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 18:54:40,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3046 Valid, 3328 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 18:54:40,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2023-12-16 18:54:40,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1065. [2023-12-16 18:54:40,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 1050 states have (on average 1.6428571428571428) internal successors, (1725), 1050 states have internal predecessors, (1725), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-16 18:54:40,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1751 transitions. [2023-12-16 18:54:40,351 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1751 transitions. Word has length 487 [2023-12-16 18:54:40,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:54:40,351 INFO L495 AbstractCegarLoop]: Abstraction has 1065 states and 1751 transitions. [2023-12-16 18:54:40,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-16 18:54:40,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1751 transitions. [2023-12-16 18:54:40,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2023-12-16 18:54:40,354 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:54:40,354 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:54:40,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 18:54:40,354 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:54:40,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:54:40,355 INFO L85 PathProgramCache]: Analyzing trace with hash -895195299, now seen corresponding path program 1 times [2023-12-16 18:54:40,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:54:40,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159039149] [2023-12-16 18:54:40,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:54:40,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:54:40,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:40,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-16 18:54:40,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:40,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-16 18:54:40,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:40,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-16 18:54:40,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:40,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-16 18:54:40,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:40,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-12-16 18:54:40,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:40,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-12-16 18:54:40,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:40,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-12-16 18:54:40,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:40,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-12-16 18:54:40,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:40,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-12-16 18:54:40,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:40,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2023-12-16 18:54:40,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:40,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2023-12-16 18:54:40,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:40,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2023-12-16 18:54:40,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:40,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2023-12-16 18:54:40,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:40,897 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-16 18:54:40,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:54:40,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159039149] [2023-12-16 18:54:40,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159039149] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:54:40,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:54:40,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 18:54:40,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976424310] [2023-12-16 18:54:40,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:54:40,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:54:40,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:54:40,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:54:40,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:54:40,899 INFO L87 Difference]: Start difference. First operand 1065 states and 1751 transitions. Second operand has 5 states, 5 states have (on average 85.2) internal successors, (426), 5 states have internal predecessors, (426), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-16 18:54:41,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:54:41,059 INFO L93 Difference]: Finished difference Result 1970 states and 3236 transitions. [2023-12-16 18:54:41,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 18:54:41,059 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 85.2) internal successors, (426), 5 states have internal predecessors, (426), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 488 [2023-12-16 18:54:41,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:54:41,063 INFO L225 Difference]: With dead ends: 1970 [2023-12-16 18:54:41,063 INFO L226 Difference]: Without dead ends: 1065 [2023-12-16 18:54:41,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 18:54:41,064 INFO L413 NwaCegarLoop]: 1663 mSDtfsCounter, 3025 mSDsluCounter, 1665 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3038 SdHoareTripleChecker+Valid, 3328 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 18:54:41,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3038 Valid, 3328 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 18:54:41,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2023-12-16 18:54:41,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1065. [2023-12-16 18:54:41,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 1050 states have (on average 1.641904761904762) internal successors, (1724), 1050 states have internal predecessors, (1724), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-16 18:54:41,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1750 transitions. [2023-12-16 18:54:41,079 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1750 transitions. Word has length 488 [2023-12-16 18:54:41,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:54:41,079 INFO L495 AbstractCegarLoop]: Abstraction has 1065 states and 1750 transitions. [2023-12-16 18:54:41,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.2) internal successors, (426), 5 states have internal predecessors, (426), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-16 18:54:41,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1750 transitions. [2023-12-16 18:54:41,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2023-12-16 18:54:41,082 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:54:41,082 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:54:41,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 18:54:41,082 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:54:41,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:54:41,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1642102531, now seen corresponding path program 1 times [2023-12-16 18:54:41,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:54:41,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589256640] [2023-12-16 18:54:41,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:54:41,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:54:41,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:41,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-16 18:54:41,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:41,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-16 18:54:41,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:41,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-16 18:54:41,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:41,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-16 18:54:41,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:41,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-12-16 18:54:41,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:41,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-12-16 18:54:41,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:41,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-12-16 18:54:41,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:41,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-12-16 18:54:41,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:41,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-12-16 18:54:41,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:41,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2023-12-16 18:54:41,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:41,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2023-12-16 18:54:41,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:41,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2023-12-16 18:54:41,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:41,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2023-12-16 18:54:41,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:41,707 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-16 18:54:41,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:54:41,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589256640] [2023-12-16 18:54:41,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589256640] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:54:41,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:54:41,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 18:54:41,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018632756] [2023-12-16 18:54:41,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:54:41,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:54:41,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:54:41,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:54:41,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:54:41,709 INFO L87 Difference]: Start difference. First operand 1065 states and 1750 transitions. Second operand has 5 states, 5 states have (on average 85.4) internal successors, (427), 5 states have internal predecessors, (427), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-16 18:54:41,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:54:41,888 INFO L93 Difference]: Finished difference Result 1970 states and 3234 transitions. [2023-12-16 18:54:41,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 18:54:41,889 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 85.4) internal successors, (427), 5 states have internal predecessors, (427), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 489 [2023-12-16 18:54:41,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:54:41,894 INFO L225 Difference]: With dead ends: 1970 [2023-12-16 18:54:41,894 INFO L226 Difference]: Without dead ends: 1065 [2023-12-16 18:54:41,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 18:54:41,896 INFO L413 NwaCegarLoop]: 1663 mSDtfsCounter, 2947 mSDsluCounter, 1665 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2960 SdHoareTripleChecker+Valid, 3328 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 18:54:41,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2960 Valid, 3328 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 18:54:41,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2023-12-16 18:54:41,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1065. [2023-12-16 18:54:41,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 1050 states have (on average 1.640952380952381) internal successors, (1723), 1050 states have internal predecessors, (1723), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-16 18:54:41,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1749 transitions. [2023-12-16 18:54:41,911 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1749 transitions. Word has length 489 [2023-12-16 18:54:41,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:54:41,912 INFO L495 AbstractCegarLoop]: Abstraction has 1065 states and 1749 transitions. [2023-12-16 18:54:41,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.4) internal successors, (427), 5 states have internal predecessors, (427), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-16 18:54:41,912 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1749 transitions. [2023-12-16 18:54:41,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2023-12-16 18:54:41,915 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:54:41,915 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:54:41,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 18:54:41,915 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:54:41,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:54:41,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1138423747, now seen corresponding path program 1 times [2023-12-16 18:54:41,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:54:41,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078678917] [2023-12-16 18:54:41,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:54:41,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:54:42,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:42,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-16 18:54:42,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:42,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-16 18:54:42,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:42,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-16 18:54:42,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:42,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-16 18:54:42,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:42,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-12-16 18:54:42,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:42,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-12-16 18:54:42,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:42,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-12-16 18:54:42,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:42,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-12-16 18:54:42,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:42,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-12-16 18:54:42,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:42,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2023-12-16 18:54:42,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:42,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2023-12-16 18:54:42,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:42,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2023-12-16 18:54:42,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:42,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2023-12-16 18:54:42,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:42,480 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-16 18:54:42,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:54:42,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078678917] [2023-12-16 18:54:42,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078678917] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:54:42,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:54:42,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 18:54:42,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003319120] [2023-12-16 18:54:42,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:54:42,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:54:42,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:54:42,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:54:42,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:54:42,483 INFO L87 Difference]: Start difference. First operand 1065 states and 1749 transitions. Second operand has 5 states, 5 states have (on average 85.6) internal successors, (428), 5 states have internal predecessors, (428), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-16 18:54:42,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:54:42,639 INFO L93 Difference]: Finished difference Result 1970 states and 3232 transitions. [2023-12-16 18:54:42,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 18:54:42,640 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 85.6) internal successors, (428), 5 states have internal predecessors, (428), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 490 [2023-12-16 18:54:42,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:54:42,643 INFO L225 Difference]: With dead ends: 1970 [2023-12-16 18:54:42,643 INFO L226 Difference]: Without dead ends: 1065 [2023-12-16 18:54:42,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 18:54:42,644 INFO L413 NwaCegarLoop]: 1663 mSDtfsCounter, 2939 mSDsluCounter, 1665 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2952 SdHoareTripleChecker+Valid, 3328 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 18:54:42,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2952 Valid, 3328 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 18:54:42,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2023-12-16 18:54:42,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1065. [2023-12-16 18:54:42,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 1050 states have (on average 1.64) internal successors, (1722), 1050 states have internal predecessors, (1722), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-16 18:54:42,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1748 transitions. [2023-12-16 18:54:42,660 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1748 transitions. Word has length 490 [2023-12-16 18:54:42,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:54:42,661 INFO L495 AbstractCegarLoop]: Abstraction has 1065 states and 1748 transitions. [2023-12-16 18:54:42,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.6) internal successors, (428), 5 states have internal predecessors, (428), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-16 18:54:42,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1748 transitions. [2023-12-16 18:54:42,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2023-12-16 18:54:42,664 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:54:42,664 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:54:42,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-16 18:54:42,664 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:54:42,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:54:42,665 INFO L85 PathProgramCache]: Analyzing trace with hash 145174173, now seen corresponding path program 1 times [2023-12-16 18:54:42,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:54:42,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550156066] [2023-12-16 18:54:42,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:54:42,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:54:42,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:43,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-16 18:54:43,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:43,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-16 18:54:43,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:43,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-16 18:54:43,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:43,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-16 18:54:43,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:43,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-12-16 18:54:43,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:43,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-12-16 18:54:43,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:43,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-12-16 18:54:43,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:43,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-12-16 18:54:43,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:43,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-12-16 18:54:43,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:43,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2023-12-16 18:54:43,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:43,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2023-12-16 18:54:43,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:43,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2023-12-16 18:54:43,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:43,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2023-12-16 18:54:43,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:43,563 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-16 18:54:43,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:54:43,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550156066] [2023-12-16 18:54:43,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550156066] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:54:43,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:54:43,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 18:54:43,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334289216] [2023-12-16 18:54:43,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:54:43,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 18:54:43,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:54:43,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 18:54:43,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 18:54:43,565 INFO L87 Difference]: Start difference. First operand 1065 states and 1748 transitions. Second operand has 4 states, 4 states have (on average 107.25) internal successors, (429), 4 states have internal predecessors, (429), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-16 18:54:43,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:54:43,704 INFO L93 Difference]: Finished difference Result 1970 states and 3230 transitions. [2023-12-16 18:54:43,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 18:54:43,725 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 107.25) internal successors, (429), 4 states have internal predecessors, (429), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 491 [2023-12-16 18:54:43,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:54:43,728 INFO L225 Difference]: With dead ends: 1970 [2023-12-16 18:54:43,728 INFO L226 Difference]: Without dead ends: 1065 [2023-12-16 18:54:43,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:54:43,729 INFO L413 NwaCegarLoop]: 1663 mSDtfsCounter, 1469 mSDsluCounter, 1665 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1469 SdHoareTripleChecker+Valid, 3328 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 18:54:43,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1469 Valid, 3328 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 18:54:43,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2023-12-16 18:54:43,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1065. [2023-12-16 18:54:43,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 1050 states have (on average 1.639047619047619) internal successors, (1721), 1050 states have internal predecessors, (1721), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-16 18:54:43,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1747 transitions. [2023-12-16 18:54:43,745 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1747 transitions. Word has length 491 [2023-12-16 18:54:43,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:54:43,746 INFO L495 AbstractCegarLoop]: Abstraction has 1065 states and 1747 transitions. [2023-12-16 18:54:43,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 107.25) internal successors, (429), 4 states have internal predecessors, (429), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-16 18:54:43,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1747 transitions. [2023-12-16 18:54:43,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2023-12-16 18:54:43,748 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:54:43,749 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:54:43,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 18:54:43,749 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:54:43,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:54:43,749 INFO L85 PathProgramCache]: Analyzing trace with hash -685479461, now seen corresponding path program 1 times [2023-12-16 18:54:43,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:54:43,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195772870] [2023-12-16 18:54:43,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:54:43,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:54:44,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:44,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-16 18:54:44,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:44,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-16 18:54:44,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:44,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-16 18:54:44,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:44,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-16 18:54:44,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:44,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-12-16 18:54:44,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:44,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-12-16 18:54:44,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:44,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-12-16 18:54:44,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:44,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-12-16 18:54:44,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:44,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-12-16 18:54:44,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:44,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2023-12-16 18:54:44,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:44,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2023-12-16 18:54:44,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:44,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2023-12-16 18:54:44,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:44,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2023-12-16 18:54:44,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:44,845 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-16 18:54:44,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:54:44,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195772870] [2023-12-16 18:54:44,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195772870] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:54:44,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:54:44,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 18:54:44,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9502952] [2023-12-16 18:54:44,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:54:44,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 18:54:44,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:54:44,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 18:54:44,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 18:54:44,847 INFO L87 Difference]: Start difference. First operand 1065 states and 1747 transitions. Second operand has 4 states, 4 states have (on average 107.25) internal successors, (429), 4 states have internal predecessors, (429), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-16 18:54:44,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:54:44,990 INFO L93 Difference]: Finished difference Result 1970 states and 3228 transitions. [2023-12-16 18:54:44,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 18:54:44,990 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 107.25) internal successors, (429), 4 states have internal predecessors, (429), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 491 [2023-12-16 18:54:44,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:54:44,993 INFO L225 Difference]: With dead ends: 1970 [2023-12-16 18:54:44,993 INFO L226 Difference]: Without dead ends: 1065 [2023-12-16 18:54:44,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:54:44,996 INFO L413 NwaCegarLoop]: 1663 mSDtfsCounter, 1427 mSDsluCounter, 1665 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1427 SdHoareTripleChecker+Valid, 3328 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 18:54:44,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1427 Valid, 3328 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 18:54:44,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2023-12-16 18:54:45,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1065. [2023-12-16 18:54:45,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 1050 states have (on average 1.638095238095238) internal successors, (1720), 1050 states have internal predecessors, (1720), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-16 18:54:45,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1746 transitions. [2023-12-16 18:54:45,012 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1746 transitions. Word has length 491 [2023-12-16 18:54:45,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:54:45,013 INFO L495 AbstractCegarLoop]: Abstraction has 1065 states and 1746 transitions. [2023-12-16 18:54:45,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 107.25) internal successors, (429), 4 states have internal predecessors, (429), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-16 18:54:45,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1746 transitions. [2023-12-16 18:54:45,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2023-12-16 18:54:45,015 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:54:45,016 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:54:45,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-16 18:54:45,016 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:54:45,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:54:45,016 INFO L85 PathProgramCache]: Analyzing trace with hash -322012963, now seen corresponding path program 1 times [2023-12-16 18:54:45,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:54:45,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193775821] [2023-12-16 18:54:45,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:54:45,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:54:45,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:45,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-16 18:54:45,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:45,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-16 18:54:45,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:45,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-16 18:54:45,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:45,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-16 18:54:45,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:45,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-12-16 18:54:45,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:45,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-12-16 18:54:45,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:45,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-12-16 18:54:45,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:45,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-12-16 18:54:45,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:45,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-12-16 18:54:45,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:45,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2023-12-16 18:54:45,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:45,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2023-12-16 18:54:45,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:45,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2023-12-16 18:54:45,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:45,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2023-12-16 18:54:45,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:46,000 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-16 18:54:46,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:54:46,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193775821] [2023-12-16 18:54:46,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193775821] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:54:46,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:54:46,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 18:54:46,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338198614] [2023-12-16 18:54:46,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:54:46,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 18:54:46,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:54:46,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 18:54:46,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 18:54:46,002 INFO L87 Difference]: Start difference. First operand 1065 states and 1746 transitions. Second operand has 4 states, 4 states have (on average 107.25) internal successors, (429), 4 states have internal predecessors, (429), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-16 18:54:46,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:54:46,142 INFO L93 Difference]: Finished difference Result 1970 states and 3226 transitions. [2023-12-16 18:54:46,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 18:54:46,143 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 107.25) internal successors, (429), 4 states have internal predecessors, (429), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 491 [2023-12-16 18:54:46,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:54:46,146 INFO L225 Difference]: With dead ends: 1970 [2023-12-16 18:54:46,146 INFO L226 Difference]: Without dead ends: 1065 [2023-12-16 18:54:46,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:54:46,147 INFO L413 NwaCegarLoop]: 1663 mSDtfsCounter, 1385 mSDsluCounter, 1665 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1385 SdHoareTripleChecker+Valid, 3328 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 18:54:46,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1385 Valid, 3328 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 18:54:46,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2023-12-16 18:54:46,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1065. [2023-12-16 18:54:46,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 1050 states have (on average 1.6371428571428572) internal successors, (1719), 1050 states have internal predecessors, (1719), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-16 18:54:46,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1745 transitions. [2023-12-16 18:54:46,162 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1745 transitions. Word has length 491 [2023-12-16 18:54:46,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:54:46,162 INFO L495 AbstractCegarLoop]: Abstraction has 1065 states and 1745 transitions. [2023-12-16 18:54:46,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 107.25) internal successors, (429), 4 states have internal predecessors, (429), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-16 18:54:46,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1745 transitions. [2023-12-16 18:54:46,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2023-12-16 18:54:46,165 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:54:46,165 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:54:46,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-16 18:54:46,165 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:54:46,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:54:46,166 INFO L85 PathProgramCache]: Analyzing trace with hash -350513253, now seen corresponding path program 1 times [2023-12-16 18:54:46,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:54:46,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255865026] [2023-12-16 18:54:46,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:54:46,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:54:46,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:46,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-16 18:54:46,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:46,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-16 18:54:46,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:46,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-16 18:54:46,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:46,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-16 18:54:46,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:46,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-12-16 18:54:46,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:46,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-12-16 18:54:46,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:46,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-12-16 18:54:46,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:46,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-12-16 18:54:46,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:46,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-12-16 18:54:46,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:46,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2023-12-16 18:54:46,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:46,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2023-12-16 18:54:46,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:46,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2023-12-16 18:54:46,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:46,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2023-12-16 18:54:46,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:46,981 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-16 18:54:46,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:54:46,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255865026] [2023-12-16 18:54:46,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255865026] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:54:46,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:54:46,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 18:54:46,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373639822] [2023-12-16 18:54:46,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:54:46,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 18:54:46,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:54:46,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 18:54:46,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 18:54:46,984 INFO L87 Difference]: Start difference. First operand 1065 states and 1745 transitions. Second operand has 4 states, 4 states have (on average 107.25) internal successors, (429), 4 states have internal predecessors, (429), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-16 18:54:47,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:54:47,132 INFO L93 Difference]: Finished difference Result 1970 states and 3224 transitions. [2023-12-16 18:54:47,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 18:54:47,133 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 107.25) internal successors, (429), 4 states have internal predecessors, (429), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 491 [2023-12-16 18:54:47,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:54:47,136 INFO L225 Difference]: With dead ends: 1970 [2023-12-16 18:54:47,136 INFO L226 Difference]: Without dead ends: 1065 [2023-12-16 18:54:47,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:54:47,138 INFO L413 NwaCegarLoop]: 1663 mSDtfsCounter, 1343 mSDsluCounter, 1665 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1343 SdHoareTripleChecker+Valid, 3328 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 18:54:47,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1343 Valid, 3328 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 18:54:47,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2023-12-16 18:54:47,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1065. [2023-12-16 18:54:47,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 1050 states have (on average 1.6361904761904762) internal successors, (1718), 1050 states have internal predecessors, (1718), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-16 18:54:47,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1744 transitions. [2023-12-16 18:54:47,153 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1744 transitions. Word has length 491 [2023-12-16 18:54:47,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:54:47,154 INFO L495 AbstractCegarLoop]: Abstraction has 1065 states and 1744 transitions. [2023-12-16 18:54:47,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 107.25) internal successors, (429), 4 states have internal predecessors, (429), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-16 18:54:47,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1744 transitions. [2023-12-16 18:54:47,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2023-12-16 18:54:47,157 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:54:47,157 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:54:47,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-16 18:54:47,157 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:54:47,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:54:47,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1915867933, now seen corresponding path program 1 times [2023-12-16 18:54:47,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:54:47,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136254866] [2023-12-16 18:54:47,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:54:47,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:54:47,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:48,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-16 18:54:48,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:48,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-16 18:54:48,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:48,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-16 18:54:48,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:48,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-16 18:54:48,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:48,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-12-16 18:54:48,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:48,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-12-16 18:54:48,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:48,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-12-16 18:54:48,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:48,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-12-16 18:54:48,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:48,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-12-16 18:54:48,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:48,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2023-12-16 18:54:48,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:48,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2023-12-16 18:54:48,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:48,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2023-12-16 18:54:48,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:48,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2023-12-16 18:54:48,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:48,716 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-16 18:54:48,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:54:48,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136254866] [2023-12-16 18:54:48,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136254866] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:54:48,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:54:48,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 18:54:48,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092898703] [2023-12-16 18:54:48,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:54:48,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:54:48,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:54:48,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:54:48,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:54:48,718 INFO L87 Difference]: Start difference. First operand 1065 states and 1744 transitions. Second operand has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-16 18:54:49,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:54:49,619 INFO L93 Difference]: Finished difference Result 1974 states and 3228 transitions. [2023-12-16 18:54:49,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 18:54:49,619 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 491 [2023-12-16 18:54:49,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:54:49,622 INFO L225 Difference]: With dead ends: 1974 [2023-12-16 18:54:49,622 INFO L226 Difference]: Without dead ends: 1069 [2023-12-16 18:54:49,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:54:49,624 INFO L413 NwaCegarLoop]: 1312 mSDtfsCounter, 1593 mSDsluCounter, 2609 mSDsCounter, 0 mSdLazyCounter, 1326 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1598 SdHoareTripleChecker+Valid, 3921 SdHoareTripleChecker+Invalid, 1327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 18:54:49,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1598 Valid, 3921 Invalid, 1327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1326 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 18:54:49,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2023-12-16 18:54:49,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1067. [2023-12-16 18:54:49,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1067 states, 1052 states have (on average 1.6349809885931559) internal successors, (1720), 1052 states have internal predecessors, (1720), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-16 18:54:49,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 1746 transitions. [2023-12-16 18:54:49,640 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 1746 transitions. Word has length 491 [2023-12-16 18:54:49,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:54:49,641 INFO L495 AbstractCegarLoop]: Abstraction has 1067 states and 1746 transitions. [2023-12-16 18:54:49,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-16 18:54:49,641 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 1746 transitions. [2023-12-16 18:54:49,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2023-12-16 18:54:49,643 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:54:49,644 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:54:49,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-16 18:54:49,644 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:54:49,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:54:49,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1470729243, now seen corresponding path program 1 times [2023-12-16 18:54:49,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:54:49,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137259362] [2023-12-16 18:54:49,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:54:49,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:54:50,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:51,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-16 18:54:51,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:51,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-16 18:54:51,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:51,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-16 18:54:51,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:51,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-16 18:54:51,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:51,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-12-16 18:54:51,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:51,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-12-16 18:54:51,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:51,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-12-16 18:54:51,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:51,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-12-16 18:54:51,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:51,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-12-16 18:54:51,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:51,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2023-12-16 18:54:51,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:51,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2023-12-16 18:54:51,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:51,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2023-12-16 18:54:51,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:51,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2023-12-16 18:54:51,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:51,162 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-16 18:54:51,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:54:51,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137259362] [2023-12-16 18:54:51,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137259362] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:54:51,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:54:51,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 18:54:51,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799449507] [2023-12-16 18:54:51,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:54:51,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:54:51,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:54:51,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:54:51,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:54:51,164 INFO L87 Difference]: Start difference. First operand 1067 states and 1746 transitions. Second operand has 5 states, 5 states have (on average 86.0) internal successors, (430), 5 states have internal predecessors, (430), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-16 18:54:51,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:54:51,889 INFO L93 Difference]: Finished difference Result 1978 states and 3232 transitions. [2023-12-16 18:54:51,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 18:54:51,905 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 86.0) internal successors, (430), 5 states have internal predecessors, (430), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 492 [2023-12-16 18:54:51,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:54:51,909 INFO L225 Difference]: With dead ends: 1978 [2023-12-16 18:54:51,909 INFO L226 Difference]: Without dead ends: 1071 [2023-12-16 18:54:51,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:54:51,911 INFO L413 NwaCegarLoop]: 1312 mSDtfsCounter, 1513 mSDsluCounter, 2593 mSDsCounter, 0 mSdLazyCounter, 1326 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1518 SdHoareTripleChecker+Valid, 3905 SdHoareTripleChecker+Invalid, 1327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 18:54:51,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1518 Valid, 3905 Invalid, 1327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1326 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 18:54:51,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2023-12-16 18:54:51,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 1069. [2023-12-16 18:54:51,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1069 states, 1054 states have (on average 1.633776091081594) internal successors, (1722), 1054 states have internal predecessors, (1722), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-16 18:54:51,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 1748 transitions. [2023-12-16 18:54:51,929 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 1748 transitions. Word has length 492 [2023-12-16 18:54:51,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:54:51,930 INFO L495 AbstractCegarLoop]: Abstraction has 1069 states and 1748 transitions. [2023-12-16 18:54:51,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.0) internal successors, (430), 5 states have internal predecessors, (430), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-16 18:54:51,930 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 1748 transitions. [2023-12-16 18:54:51,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2023-12-16 18:54:51,933 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:54:51,933 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:54:51,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-16 18:54:51,933 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:54:51,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:54:51,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1840537443, now seen corresponding path program 1 times [2023-12-16 18:54:51,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:54:51,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017638032] [2023-12-16 18:54:51,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:54:51,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:54:52,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:53,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-16 18:54:53,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:53,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-16 18:54:53,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:53,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-16 18:54:53,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:53,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-16 18:54:53,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:53,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-12-16 18:54:53,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:53,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-12-16 18:54:53,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:53,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-12-16 18:54:53,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:53,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-12-16 18:54:53,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:53,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-12-16 18:54:53,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:53,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2023-12-16 18:54:53,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:53,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2023-12-16 18:54:53,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:53,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2023-12-16 18:54:53,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:53,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2023-12-16 18:54:53,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:53,838 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-16 18:54:53,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:54:53,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017638032] [2023-12-16 18:54:53,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017638032] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:54:53,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:54:53,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-16 18:54:53,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748978461] [2023-12-16 18:54:53,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:54:53,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 18:54:53,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:54:53,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 18:54:53,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-16 18:54:53,841 INFO L87 Difference]: Start difference. First operand 1069 states and 1748 transitions. Second operand has 10 states, 10 states have (on average 43.1) internal successors, (431), 10 states have internal predecessors, (431), 3 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-16 18:54:54,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:54:54,735 INFO L93 Difference]: Finished difference Result 3822 states and 6239 transitions. [2023-12-16 18:54:54,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-16 18:54:54,738 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 43.1) internal successors, (431), 10 states have internal predecessors, (431), 3 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 493 [2023-12-16 18:54:54,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:54:54,746 INFO L225 Difference]: With dead ends: 3822 [2023-12-16 18:54:54,750 INFO L226 Difference]: Without dead ends: 2909 [2023-12-16 18:54:54,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2023-12-16 18:54:54,752 INFO L413 NwaCegarLoop]: 3214 mSDtfsCounter, 6997 mSDsluCounter, 21801 mSDsCounter, 0 mSdLazyCounter, 1029 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6997 SdHoareTripleChecker+Valid, 25015 SdHoareTripleChecker+Invalid, 1082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 18:54:54,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6997 Valid, 25015 Invalid, 1082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1029 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 18:54:54,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2909 states. [2023-12-16 18:54:54,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2909 to 1083. [2023-12-16 18:54:54,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1083 states, 1068 states have (on average 1.6329588014981273) internal successors, (1744), 1068 states have internal predecessors, (1744), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-16 18:54:54,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 1770 transitions. [2023-12-16 18:54:54,814 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 1770 transitions. Word has length 493 [2023-12-16 18:54:54,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:54:54,814 INFO L495 AbstractCegarLoop]: Abstraction has 1083 states and 1770 transitions. [2023-12-16 18:54:54,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 43.1) internal successors, (431), 10 states have internal predecessors, (431), 3 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-16 18:54:54,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 1770 transitions. [2023-12-16 18:54:54,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2023-12-16 18:54:54,817 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:54:54,817 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:54:54,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-16 18:54:54,818 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:54:54,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:54:54,818 INFO L85 PathProgramCache]: Analyzing trace with hash 278543081, now seen corresponding path program 1 times [2023-12-16 18:54:54,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:54:54,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707576608] [2023-12-16 18:54:54,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:54:54,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:54:55,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:56,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-16 18:54:56,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:56,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-16 18:54:56,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:56,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-16 18:54:56,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:56,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-16 18:54:56,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:56,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-12-16 18:54:56,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:56,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-12-16 18:54:56,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:56,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2023-12-16 18:54:56,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:56,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-12-16 18:54:56,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:56,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2023-12-16 18:54:56,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:56,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2023-12-16 18:54:56,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:56,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2023-12-16 18:54:56,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:56,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2023-12-16 18:54:56,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:56,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2023-12-16 18:54:56,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:56,645 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-16 18:54:56,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:54:56,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707576608] [2023-12-16 18:54:56,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707576608] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:54:56,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:54:56,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 18:54:56,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899362544] [2023-12-16 18:54:56,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:54:56,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 18:54:56,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:54:56,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 18:54:56,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-16 18:54:56,649 INFO L87 Difference]: Start difference. First operand 1083 states and 1770 transitions. Second operand has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-16 18:54:57,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:54:57,008 INFO L93 Difference]: Finished difference Result 3830 states and 6252 transitions. [2023-12-16 18:54:57,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 18:54:57,008 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 494 [2023-12-16 18:54:57,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:54:57,015 INFO L225 Difference]: With dead ends: 3830 [2023-12-16 18:54:57,015 INFO L226 Difference]: Without dead ends: 2907 [2023-12-16 18:54:57,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2023-12-16 18:54:57,020 INFO L413 NwaCegarLoop]: 2012 mSDtfsCounter, 8587 mSDsluCounter, 9295 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8596 SdHoareTripleChecker+Valid, 11307 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 18:54:57,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8596 Valid, 11307 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 18:54:57,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2907 states. [2023-12-16 18:54:57,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2907 to 1083. [2023-12-16 18:54:57,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1083 states, 1068 states have (on average 1.6320224719101124) internal successors, (1743), 1068 states have internal predecessors, (1743), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-16 18:54:57,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 1769 transitions. [2023-12-16 18:54:57,061 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 1769 transitions. Word has length 494 [2023-12-16 18:54:57,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:54:57,061 INFO L495 AbstractCegarLoop]: Abstraction has 1083 states and 1769 transitions. [2023-12-16 18:54:57,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-16 18:54:57,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 1769 transitions. [2023-12-16 18:54:57,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2023-12-16 18:54:57,087 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:54:57,087 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:54:57,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-16 18:54:57,087 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:54:57,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:54:57,087 INFO L85 PathProgramCache]: Analyzing trace with hash 10510469, now seen corresponding path program 1 times [2023-12-16 18:54:57,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:54:57,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214366682] [2023-12-16 18:54:57,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:54:57,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:54:57,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:58,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-16 18:54:58,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:58,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-16 18:54:58,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:58,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-16 18:54:58,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:58,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-16 18:54:58,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:58,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-12-16 18:54:58,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:58,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-12-16 18:54:58,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:58,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2023-12-16 18:54:58,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:58,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-12-16 18:54:58,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:58,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2023-12-16 18:54:58,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:58,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2023-12-16 18:54:58,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:58,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2023-12-16 18:54:58,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:58,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2023-12-16 18:54:58,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:58,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2023-12-16 18:54:58,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:54:58,876 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-16 18:54:58,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:54:58,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214366682] [2023-12-16 18:54:58,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214366682] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:54:58,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:54:58,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 18:54:58,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619986473] [2023-12-16 18:54:58,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:54:58,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:54:58,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:54:58,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:54:58,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:54:58,878 INFO L87 Difference]: Start difference. First operand 1083 states and 1769 transitions. Second operand has 5 states, 5 states have (on average 86.4) internal successors, (432), 5 states have internal predecessors, (432), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-16 18:54:59,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:54:59,743 INFO L93 Difference]: Finished difference Result 2008 states and 3275 transitions. [2023-12-16 18:54:59,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 18:54:59,744 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 86.4) internal successors, (432), 5 states have internal predecessors, (432), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 494 [2023-12-16 18:54:59,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:54:59,747 INFO L225 Difference]: With dead ends: 2008 [2023-12-16 18:54:59,747 INFO L226 Difference]: Without dead ends: 1085 [2023-12-16 18:54:59,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:54:59,748 INFO L413 NwaCegarLoop]: 1312 mSDtfsCounter, 1431 mSDsluCounter, 2577 mSDsCounter, 0 mSdLazyCounter, 1326 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1431 SdHoareTripleChecker+Valid, 3889 SdHoareTripleChecker+Invalid, 1326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 18:54:59,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1431 Valid, 3889 Invalid, 1326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1326 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 18:54:59,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2023-12-16 18:54:59,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 1084. [2023-12-16 18:54:59,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1084 states, 1069 states have (on average 1.6314312441534145) internal successors, (1744), 1069 states have internal predecessors, (1744), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-16 18:54:59,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1084 states to 1084 states and 1770 transitions. [2023-12-16 18:54:59,772 INFO L78 Accepts]: Start accepts. Automaton has 1084 states and 1770 transitions. Word has length 494 [2023-12-16 18:54:59,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:54:59,773 INFO L495 AbstractCegarLoop]: Abstraction has 1084 states and 1770 transitions. [2023-12-16 18:54:59,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.4) internal successors, (432), 5 states have internal predecessors, (432), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-16 18:54:59,773 INFO L276 IsEmpty]: Start isEmpty. Operand 1084 states and 1770 transitions. [2023-12-16 18:54:59,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2023-12-16 18:54:59,776 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:54:59,776 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:54:59,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-16 18:54:59,776 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:54:59,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:54:59,777 INFO L85 PathProgramCache]: Analyzing trace with hash 421120835, now seen corresponding path program 1 times [2023-12-16 18:54:59,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:54:59,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174927416] [2023-12-16 18:54:59,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:54:59,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:55:00,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:01,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-16 18:55:01,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:01,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-16 18:55:01,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:01,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-16 18:55:01,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:01,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-16 18:55:01,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:01,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-12-16 18:55:01,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:01,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-12-16 18:55:01,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:01,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2023-12-16 18:55:01,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:01,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-12-16 18:55:01,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:01,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2023-12-16 18:55:01,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:01,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2023-12-16 18:55:01,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:01,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2023-12-16 18:55:01,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:01,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2023-12-16 18:55:01,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:01,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2023-12-16 18:55:01,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:01,359 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-16 18:55:01,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:55:01,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174927416] [2023-12-16 18:55:01,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174927416] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:55:01,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:55:01,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 18:55:01,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051528250] [2023-12-16 18:55:01,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:55:01,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 18:55:01,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:55:01,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 18:55:01,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 18:55:01,361 INFO L87 Difference]: Start difference. First operand 1084 states and 1770 transitions. Second operand has 6 states, 6 states have (on average 72.0) internal successors, (432), 6 states have internal predecessors, (432), 3 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-16 18:55:01,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:55:01,842 INFO L93 Difference]: Finished difference Result 2961 states and 4827 transitions. [2023-12-16 18:55:01,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 18:55:01,842 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 72.0) internal successors, (432), 6 states have internal predecessors, (432), 3 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 494 [2023-12-16 18:55:01,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:55:01,846 INFO L225 Difference]: With dead ends: 2961 [2023-12-16 18:55:01,846 INFO L226 Difference]: Without dead ends: 2015 [2023-12-16 18:55:01,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-16 18:55:01,848 INFO L413 NwaCegarLoop]: 1734 mSDtfsCounter, 1465 mSDsluCounter, 6513 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 8247 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 18:55:01,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 8247 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 18:55:01,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2015 states. [2023-12-16 18:55:01,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2015 to 1173. [2023-12-16 18:55:01,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1173 states, 1154 states have (on average 1.6299826689774697) internal successors, (1881), 1154 states have internal predecessors, (1881), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-16 18:55:01,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1915 transitions. [2023-12-16 18:55:01,873 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1915 transitions. Word has length 494 [2023-12-16 18:55:01,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:55:01,873 INFO L495 AbstractCegarLoop]: Abstraction has 1173 states and 1915 transitions. [2023-12-16 18:55:01,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.0) internal successors, (432), 6 states have internal predecessors, (432), 3 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-16 18:55:01,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1915 transitions. [2023-12-16 18:55:01,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2023-12-16 18:55:01,876 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:55:01,876 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:55:01,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-16 18:55:01,877 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:55:01,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:55:01,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1032123733, now seen corresponding path program 1 times [2023-12-16 18:55:01,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:55:01,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230124618] [2023-12-16 18:55:01,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:55:01,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:55:02,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:04,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-16 18:55:04,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:04,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-16 18:55:04,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:04,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-16 18:55:04,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:04,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-16 18:55:04,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:04,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-12-16 18:55:04,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:04,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-12-16 18:55:04,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:04,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2023-12-16 18:55:04,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:04,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-12-16 18:55:04,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:04,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2023-12-16 18:55:04,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:04,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2023-12-16 18:55:04,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:04,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2023-12-16 18:55:04,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:04,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2023-12-16 18:55:04,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:04,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2023-12-16 18:55:04,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:04,280 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-16 18:55:04,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:55:04,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230124618] [2023-12-16 18:55:04,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230124618] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:55:04,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:55:04,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 18:55:04,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937672650] [2023-12-16 18:55:04,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:55:04,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 18:55:04,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:55:04,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 18:55:04,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-16 18:55:04,283 INFO L87 Difference]: Start difference. First operand 1173 states and 1915 transitions. Second operand has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-16 18:55:04,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:55:04,764 INFO L93 Difference]: Finished difference Result 4223 states and 6886 transitions. [2023-12-16 18:55:04,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 18:55:04,764 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 494 [2023-12-16 18:55:04,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:55:04,786 INFO L225 Difference]: With dead ends: 4223 [2023-12-16 18:55:04,787 INFO L226 Difference]: Without dead ends: 3299 [2023-12-16 18:55:04,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2023-12-16 18:55:04,797 INFO L413 NwaCegarLoop]: 3240 mSDtfsCounter, 7518 mSDsluCounter, 12108 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7531 SdHoareTripleChecker+Valid, 15348 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 18:55:04,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7531 Valid, 15348 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 18:55:04,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3299 states. [2023-12-16 18:55:04,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3299 to 1463. [2023-12-16 18:55:04,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1463 states, 1431 states have (on average 1.6254367575122293) internal successors, (2326), 1431 states have internal predecessors, (2326), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-16 18:55:04,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1463 states to 1463 states and 2386 transitions. [2023-12-16 18:55:04,835 INFO L78 Accepts]: Start accepts. Automaton has 1463 states and 2386 transitions. Word has length 494 [2023-12-16 18:55:04,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:55:04,835 INFO L495 AbstractCegarLoop]: Abstraction has 1463 states and 2386 transitions. [2023-12-16 18:55:04,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-16 18:55:04,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1463 states and 2386 transitions. [2023-12-16 18:55:04,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2023-12-16 18:55:04,839 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:55:04,839 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:55:04,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-16 18:55:04,839 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:55:04,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:55:04,840 INFO L85 PathProgramCache]: Analyzing trace with hash -362239829, now seen corresponding path program 1 times [2023-12-16 18:55:04,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:55:04,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816525319] [2023-12-16 18:55:04,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:55:04,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:55:05,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:06,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-16 18:55:06,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:06,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-16 18:55:06,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:06,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-16 18:55:06,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:06,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-16 18:55:06,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:06,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-12-16 18:55:06,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:06,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-12-16 18:55:06,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:06,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2023-12-16 18:55:06,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:06,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-12-16 18:55:06,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:06,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2023-12-16 18:55:06,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:06,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2023-12-16 18:55:06,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:06,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2023-12-16 18:55:06,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:06,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2023-12-16 18:55:06,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:06,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2023-12-16 18:55:06,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:06,701 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-16 18:55:06,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:55:06,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816525319] [2023-12-16 18:55:06,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816525319] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:55:06,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:55:06,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 18:55:06,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017770539] [2023-12-16 18:55:06,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:55:06,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:55:06,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:55:06,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:55:06,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:55:06,720 INFO L87 Difference]: Start difference. First operand 1463 states and 2386 transitions. Second operand has 5 states, 5 states have (on average 86.6) internal successors, (433), 5 states have internal predecessors, (433), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-16 18:55:07,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:55:07,438 INFO L93 Difference]: Finished difference Result 2389 states and 3893 transitions. [2023-12-16 18:55:07,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 18:55:07,438 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 86.6) internal successors, (433), 5 states have internal predecessors, (433), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 495 [2023-12-16 18:55:07,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:55:07,441 INFO L225 Difference]: With dead ends: 2389 [2023-12-16 18:55:07,441 INFO L226 Difference]: Without dead ends: 1465 [2023-12-16 18:55:07,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:55:07,443 INFO L413 NwaCegarLoop]: 1312 mSDtfsCounter, 1346 mSDsluCounter, 2609 mSDsCounter, 0 mSdLazyCounter, 1326 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1346 SdHoareTripleChecker+Valid, 3921 SdHoareTripleChecker+Invalid, 1326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 18:55:07,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1346 Valid, 3921 Invalid, 1326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1326 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 18:55:07,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1465 states. [2023-12-16 18:55:07,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1465 to 1464. [2023-12-16 18:55:07,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1464 states, 1432 states have (on average 1.625) internal successors, (2327), 1432 states have internal predecessors, (2327), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-16 18:55:07,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 2387 transitions. [2023-12-16 18:55:07,501 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 2387 transitions. Word has length 495 [2023-12-16 18:55:07,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:55:07,502 INFO L495 AbstractCegarLoop]: Abstraction has 1464 states and 2387 transitions. [2023-12-16 18:55:07,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.6) internal successors, (433), 5 states have internal predecessors, (433), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-16 18:55:07,502 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 2387 transitions. [2023-12-16 18:55:07,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2023-12-16 18:55:07,506 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:55:07,506 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:55:07,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-16 18:55:07,507 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:55:07,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:55:07,507 INFO L85 PathProgramCache]: Analyzing trace with hash 898677421, now seen corresponding path program 1 times [2023-12-16 18:55:07,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:55:07,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925175405] [2023-12-16 18:55:07,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:55:07,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:55:08,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:08,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-16 18:55:08,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:08,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-16 18:55:08,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:08,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-16 18:55:08,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:08,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-16 18:55:08,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:08,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-12-16 18:55:08,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:08,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-12-16 18:55:08,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:08,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2023-12-16 18:55:08,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:08,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-12-16 18:55:08,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:08,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2023-12-16 18:55:08,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:08,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2023-12-16 18:55:08,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:08,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2023-12-16 18:55:08,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:08,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2023-12-16 18:55:08,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:08,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2023-12-16 18:55:08,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:08,888 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-16 18:55:08,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:55:08,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925175405] [2023-12-16 18:55:08,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925175405] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:55:08,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:55:08,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 18:55:08,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158629007] [2023-12-16 18:55:08,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:55:08,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 18:55:08,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:55:08,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 18:55:08,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 18:55:08,890 INFO L87 Difference]: Start difference. First operand 1464 states and 2387 transitions. Second operand has 4 states, 4 states have (on average 108.25) internal successors, (433), 4 states have internal predecessors, (433), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-16 18:55:09,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:55:09,448 INFO L93 Difference]: Finished difference Result 2389 states and 3892 transitions. [2023-12-16 18:55:09,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 18:55:09,449 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 108.25) internal successors, (433), 4 states have internal predecessors, (433), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 495 [2023-12-16 18:55:09,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:55:09,451 INFO L225 Difference]: With dead ends: 2389 [2023-12-16 18:55:09,451 INFO L226 Difference]: Without dead ends: 1464 [2023-12-16 18:55:09,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 18:55:09,452 INFO L413 NwaCegarLoop]: 1313 mSDtfsCounter, 1616 mSDsluCounter, 1297 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1620 SdHoareTripleChecker+Valid, 2610 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 18:55:09,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1620 Valid, 2610 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 872 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 18:55:09,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1464 states. [2023-12-16 18:55:09,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1464 to 1464. [2023-12-16 18:55:09,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1464 states, 1432 states have (on average 1.6243016759776536) internal successors, (2326), 1432 states have internal predecessors, (2326), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-16 18:55:09,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 2386 transitions. [2023-12-16 18:55:09,477 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 2386 transitions. Word has length 495 [2023-12-16 18:55:09,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:55:09,478 INFO L495 AbstractCegarLoop]: Abstraction has 1464 states and 2386 transitions. [2023-12-16 18:55:09,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.25) internal successors, (433), 4 states have internal predecessors, (433), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-16 18:55:09,478 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 2386 transitions. [2023-12-16 18:55:09,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2023-12-16 18:55:09,481 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:55:09,481 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:55:09,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-16 18:55:09,481 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:55:09,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:55:09,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1102396365, now seen corresponding path program 1 times [2023-12-16 18:55:09,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:55:09,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095277606] [2023-12-16 18:55:09,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:55:09,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:55:10,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:10,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-16 18:55:10,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:10,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-16 18:55:10,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:10,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-16 18:55:10,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:10,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-16 18:55:10,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:10,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-12-16 18:55:10,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:10,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-12-16 18:55:10,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:10,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2023-12-16 18:55:10,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:10,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-12-16 18:55:10,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:10,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2023-12-16 18:55:10,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:10,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2023-12-16 18:55:10,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:10,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2023-12-16 18:55:10,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:10,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2023-12-16 18:55:10,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:10,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2023-12-16 18:55:10,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:55:10,890 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-16 18:55:10,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:55:10,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095277606] [2023-12-16 18:55:10,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095277606] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:55:10,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:55:10,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 18:55:10,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614646818] [2023-12-16 18:55:10,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:55:10,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 18:55:10,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:55:10,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 18:55:10,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 18:55:10,892 INFO L87 Difference]: Start difference. First operand 1464 states and 2386 transitions. Second operand has 7 states, 7 states have (on average 62.0) internal successors, (434), 7 states have internal predecessors, (434), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-16 18:55:11,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:55:11,501 INFO L93 Difference]: Finished difference Result 2869 states and 4647 transitions. [2023-12-16 18:55:11,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 18:55:11,501 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 62.0) internal successors, (434), 7 states have internal predecessors, (434), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 496 [2023-12-16 18:55:11,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:55:11,503 INFO L225 Difference]: With dead ends: 2869 [2023-12-16 18:55:11,503 INFO L226 Difference]: Without dead ends: 1493 [2023-12-16 18:55:11,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-12-16 18:55:11,505 INFO L413 NwaCegarLoop]: 1741 mSDtfsCounter, 3194 mSDsluCounter, 5095 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3194 SdHoareTripleChecker+Valid, 6836 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 18:55:11,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3194 Valid, 6836 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 18:55:11,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1493 states. [2023-12-16 18:55:11,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1493 to 1472. [2023-12-16 18:55:11,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1440 states have (on average 1.6180555555555556) internal successors, (2330), 1440 states have internal predecessors, (2330), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-16 18:55:11,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 2390 transitions. [2023-12-16 18:55:11,538 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 2390 transitions. Word has length 496 [2023-12-16 18:55:11,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:55:11,538 INFO L495 AbstractCegarLoop]: Abstraction has 1472 states and 2390 transitions. [2023-12-16 18:55:11,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 62.0) internal successors, (434), 7 states have internal predecessors, (434), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-16 18:55:11,538 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 2390 transitions. [2023-12-16 18:55:11,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2023-12-16 18:55:11,541 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:55:11,541 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:55:11,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-16 18:55:11,542 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:55:11,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:55:11,542 INFO L85 PathProgramCache]: Analyzing trace with hash 179625085, now seen corresponding path program 1 times [2023-12-16 18:55:11,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:55:11,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398455441] [2023-12-16 18:55:11,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:55:11,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms Received shutdown request... [2023-12-16 18:55:11,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2023-12-16 18:55:11,711 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 18:55:11,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-16 18:55:11,711 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 498 with TraceHistMax 13,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleSmtInterpolCraig [398455441] and IpTcStrategyModuleZ3 [541272951]. [2023-12-16 18:55:11,714 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:55:11,715 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 18:55:11,717 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 06:55:11 BoogieIcfgContainer [2023-12-16 18:55:11,717 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 18:55:11,717 INFO L158 Benchmark]: Toolchain (without parser) took 49285.83ms. Allocated memory was 246.4MB in the beginning and 1.5GB in the end (delta: 1.2GB). Free memory was 187.6MB in the beginning and 877.6MB in the end (delta: -690.0MB). Peak memory consumption was 558.8MB. Max. memory is 8.0GB. [2023-12-16 18:55:11,717 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 201.3MB. Free memory is still 148.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 18:55:11,717 INFO L158 Benchmark]: CACSL2BoogieTranslator took 816.06ms. Allocated memory is still 246.4MB. Free memory was 187.1MB in the beginning and 109.5MB in the end (delta: 77.6MB). Peak memory consumption was 77.6MB. Max. memory is 8.0GB. [2023-12-16 18:55:11,718 INFO L158 Benchmark]: Boogie Procedure Inliner took 490.30ms. Allocated memory is still 246.4MB. Free memory was 109.5MB in the beginning and 133.9MB in the end (delta: -24.3MB). Peak memory consumption was 66.9MB. Max. memory is 8.0GB. [2023-12-16 18:55:11,718 INFO L158 Benchmark]: Boogie Preprocessor took 695.08ms. Allocated memory was 246.4MB in the beginning and 492.8MB in the end (delta: 246.4MB). Free memory was 133.9MB in the beginning and 352.1MB in the end (delta: -218.3MB). Peak memory consumption was 51.2MB. Max. memory is 8.0GB. [2023-12-16 18:55:11,718 INFO L158 Benchmark]: RCFGBuilder took 2682.90ms. Allocated memory was 492.8MB in the beginning and 780.1MB in the end (delta: 287.3MB). Free memory was 352.1MB in the beginning and 492.7MB in the end (delta: -140.6MB). Peak memory consumption was 148.9MB. Max. memory is 8.0GB. [2023-12-16 18:55:11,718 INFO L158 Benchmark]: TraceAbstraction took 44595.70ms. Allocated memory was 780.1MB in the beginning and 1.5GB in the end (delta: 714.1MB). Free memory was 492.2MB in the beginning and 877.6MB in the end (delta: -385.5MB). Peak memory consumption was 328.1MB. Max. memory is 8.0GB. [2023-12-16 18:55:11,719 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 201.3MB. Free memory is still 148.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 816.06ms. Allocated memory is still 246.4MB. Free memory was 187.1MB in the beginning and 109.5MB in the end (delta: 77.6MB). Peak memory consumption was 77.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 490.30ms. Allocated memory is still 246.4MB. Free memory was 109.5MB in the beginning and 133.9MB in the end (delta: -24.3MB). Peak memory consumption was 66.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 695.08ms. Allocated memory was 246.4MB in the beginning and 492.8MB in the end (delta: 246.4MB). Free memory was 133.9MB in the beginning and 352.1MB in the end (delta: -218.3MB). Peak memory consumption was 51.2MB. Max. memory is 8.0GB. * RCFGBuilder took 2682.90ms. Allocated memory was 492.8MB in the beginning and 780.1MB in the end (delta: 287.3MB). Free memory was 352.1MB in the beginning and 492.7MB in the end (delta: -140.6MB). Peak memory consumption was 148.9MB. Max. memory is 8.0GB. * TraceAbstraction took 44595.70ms. Allocated memory was 780.1MB in the beginning and 1.5GB in the end (delta: 714.1MB). Free memory was 492.2MB in the beginning and 877.6MB in the end (delta: -385.5MB). Peak memory consumption was 328.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 21). Cancelled while NwaCegarLoop was analyzing trace of length 498 with TraceHistMax 13,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleSmtInterpolCraig [398455441] and IpTcStrategyModuleZ3 [541272951]. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 1067 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 44.5s, OverallIterations: 28, TraceHistogramMax: 13, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 12.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 67392 SdHoareTripleChecker+Valid, 10.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 67246 mSDsluCounter, 142087 SdHoareTripleChecker+Invalid, 8.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 96596 mSDsCounter, 238 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15498 IncrementalHoareTripleChecker+Invalid, 15736 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 238 mSolverCounterUnsat, 45491 mSDtfsCounter, 15498 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 896 GetRequests, 754 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1472occurred in iteration=27, InterpolantAutomatonStates: 153, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 27 MinimizatonAttempts, 6355 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 10.4s SatisfiabilityAnalysisTime, 19.7s InterpolantComputationTime, 13194 NumberOfCodeBlocks, 13194 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 13167 ConstructedInterpolants, 0 QuantifiedInterpolants, 48549 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 27 InterpolantComputations, 27 PerfectInterpolantSequences, 8424/8424 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown