/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-66.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 02:26:05,491 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 02:26:05,554 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 02:26:05,557 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 02:26:05,557 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 02:26:05,571 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 02:26:05,571 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 02:26:05,571 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 02:26:05,572 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 02:26:05,572 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 02:26:05,572 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 02:26:05,573 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 02:26:05,573 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 02:26:05,573 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 02:26:05,573 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 02:26:05,574 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 02:26:05,574 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 02:26:05,574 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 02:26:05,574 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 02:26:05,575 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 02:26:05,575 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 02:26:05,575 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 02:26:05,575 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 02:26:05,576 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 02:26:05,576 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 02:26:05,576 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 02:26:05,576 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 02:26:05,576 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 02:26:05,577 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 02:26:05,577 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 02:26:05,577 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 02:26:05,577 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 02:26:05,577 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 02:26:05,578 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 02:26:05,578 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 02:26:05,578 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 02:26:05,578 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 02:26:05,578 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 02:26:05,578 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 02:26:05,579 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 02:26:05,579 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 02:26:05,581 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 02:26:05,582 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 02:26:05,582 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 02:26:05,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 02:26:05,807 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 02:26:05,809 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 02:26:05,809 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 02:26:05,810 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 02:26:05,810 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-66.i [2023-12-21 02:26:06,907 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 02:26:07,074 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 02:26:07,076 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-66.i [2023-12-21 02:26:07,084 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/368b96b77/18829b039a7e416db8cdfe568a06c6ec/FLAG98d8c1271 [2023-12-21 02:26:07,100 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/368b96b77/18829b039a7e416db8cdfe568a06c6ec [2023-12-21 02:26:07,102 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 02:26:07,103 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 02:26:07,104 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 02:26:07,104 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 02:26:07,107 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 02:26:07,108 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:26:07" (1/1) ... [2023-12-21 02:26:07,108 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@258edab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:26:07, skipping insertion in model container [2023-12-21 02:26:07,109 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:26:07" (1/1) ... [2023-12-21 02:26:07,133 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 02:26:07,236 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-66.i[916,929] [2023-12-21 02:26:07,283 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 02:26:07,292 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 02:26:07,303 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-66.i[916,929] [2023-12-21 02:26:07,343 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 02:26:07,356 INFO L206 MainTranslator]: Completed translation [2023-12-21 02:26:07,357 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:26:07 WrapperNode [2023-12-21 02:26:07,357 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 02:26:07,358 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 02:26:07,358 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 02:26:07,358 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 02:26:07,363 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:26:07" (1/1) ... [2023-12-21 02:26:07,372 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:26:07" (1/1) ... [2023-12-21 02:26:07,429 INFO L138 Inliner]: procedures = 26, calls = 149, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 426 [2023-12-21 02:26:07,429 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 02:26:07,430 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 02:26:07,430 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 02:26:07,430 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 02:26:07,438 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:26:07" (1/1) ... [2023-12-21 02:26:07,438 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:26:07" (1/1) ... [2023-12-21 02:26:07,448 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:26:07" (1/1) ... [2023-12-21 02:26:07,478 INFO L175 MemorySlicer]: Split 123 memory accesses to 2 slices as follows [2, 121]. 98 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 12]. The 16 writes are split as follows [0, 16]. [2023-12-21 02:26:07,478 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:26:07" (1/1) ... [2023-12-21 02:26:07,479 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:26:07" (1/1) ... [2023-12-21 02:26:07,501 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:26:07" (1/1) ... [2023-12-21 02:26:07,523 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:26:07" (1/1) ... [2023-12-21 02:26:07,525 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:26:07" (1/1) ... [2023-12-21 02:26:07,527 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:26:07" (1/1) ... [2023-12-21 02:26:07,530 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 02:26:07,531 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 02:26:07,531 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 02:26:07,531 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 02:26:07,532 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:26:07" (1/1) ... [2023-12-21 02:26:07,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 02:26:07,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:26:07,562 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-21 02:26:07,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-21 02:26:07,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 02:26:07,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-21 02:26:07,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-21 02:26:07,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-21 02:26:07,637 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-21 02:26:07,637 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-21 02:26:07,638 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-21 02:26:07,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 02:26:07,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-21 02:26:07,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 02:26:07,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 02:26:07,732 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 02:26:07,734 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 02:26:08,107 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 02:26:08,139 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 02:26:08,139 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-21 02:26:08,139 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:26:08 BoogieIcfgContainer [2023-12-21 02:26:08,140 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 02:26:08,143 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 02:26:08,143 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 02:26:08,146 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 02:26:08,146 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 02:26:07" (1/3) ... [2023-12-21 02:26:08,147 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6943c85d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:26:08, skipping insertion in model container [2023-12-21 02:26:08,147 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:26:07" (2/3) ... [2023-12-21 02:26:08,147 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6943c85d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:26:08, skipping insertion in model container [2023-12-21 02:26:08,148 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:26:08" (3/3) ... [2023-12-21 02:26:08,149 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-s_file-66.i [2023-12-21 02:26:08,162 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 02:26:08,163 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 02:26:08,200 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 02:26:08,204 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;@1dc3480a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 02:26:08,205 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 02:26:08,207 INFO L276 IsEmpty]: Start isEmpty. Operand has 79 states, 62 states have (on average 1.4516129032258065) internal successors, (90), 63 states have internal predecessors, (90), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-21 02:26:08,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-21 02:26:08,227 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:26:08,228 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:26:08,228 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:26:08,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:26:08,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1993153253, now seen corresponding path program 1 times [2023-12-21 02:26:08,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:26:08,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355312807] [2023-12-21 02:26:08,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:26:08,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:26:08,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:08,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:26:08,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:08,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:26:08,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:08,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:26:08,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:08,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:26:08,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:08,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:26:08,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:08,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:26:08,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:08,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:26:08,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:08,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:26:08,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:08,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:26:08,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:08,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:26:08,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:08,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:26:08,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:08,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:26:08,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:08,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:26:08,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:08,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:26:08,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:08,638 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-21 02:26:08,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:26:08,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355312807] [2023-12-21 02:26:08,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355312807] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:26:08,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:26:08,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 02:26:08,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660220489] [2023-12-21 02:26:08,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:26:08,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 02:26:08,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:26:08,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 02:26:08,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 02:26:08,667 INFO L87 Difference]: Start difference. First operand has 79 states, 62 states have (on average 1.4516129032258065) internal successors, (90), 63 states have internal predecessors, (90), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-21 02:26:08,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:26:08,747 INFO L93 Difference]: Finished difference Result 163 states and 259 transitions. [2023-12-21 02:26:08,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 02:26:08,749 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 104 [2023-12-21 02:26:08,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:26:08,755 INFO L225 Difference]: With dead ends: 163 [2023-12-21 02:26:08,755 INFO L226 Difference]: Without dead ends: 85 [2023-12-21 02:26:08,757 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 [2023-12-21 02:26:08,759 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 12 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 02:26:08,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 315 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 02:26:08,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-12-21 02:26:08,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 79. [2023-12-21 02:26:08,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 63 states have (on average 1.380952380952381) internal successors, (87), 63 states have internal predecessors, (87), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-21 02:26:08,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 115 transitions. [2023-12-21 02:26:08,789 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 115 transitions. Word has length 104 [2023-12-21 02:26:08,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:26:08,790 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 115 transitions. [2023-12-21 02:26:08,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-21 02:26:08,790 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 115 transitions. [2023-12-21 02:26:08,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-21 02:26:08,792 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:26:08,792 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:26:08,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 02:26:08,792 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:26:08,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:26:08,793 INFO L85 PathProgramCache]: Analyzing trace with hash 2050411555, now seen corresponding path program 1 times [2023-12-21 02:26:08,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:26:08,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996446559] [2023-12-21 02:26:08,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:26:08,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:26:08,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:08,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:26:08,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:08,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:26:08,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:08,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:26:08,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:08,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:26:08,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:08,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:26:08,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:08,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:26:08,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:08,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:26:08,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:08,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:26:08,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:08,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:26:08,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:08,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:26:08,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:08,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:26:08,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:08,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:26:08,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:08,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:26:08,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:08,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:26:08,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:08,973 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-21 02:26:08,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:26:08,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996446559] [2023-12-21 02:26:08,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996446559] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:26:08,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:26:08,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 02:26:08,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569021548] [2023-12-21 02:26:08,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:26:08,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 02:26:08,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:26:08,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 02:26:08,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 02:26:08,976 INFO L87 Difference]: Start difference. First operand 79 states and 115 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-21 02:26:09,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:26:09,016 INFO L93 Difference]: Finished difference Result 161 states and 234 transitions. [2023-12-21 02:26:09,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 02:26:09,017 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 104 [2023-12-21 02:26:09,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:26:09,020 INFO L225 Difference]: With dead ends: 161 [2023-12-21 02:26:09,020 INFO L226 Difference]: Without dead ends: 83 [2023-12-21 02:26:09,021 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 [2023-12-21 02:26:09,022 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 3 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 02:26:09,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 316 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 02:26:09,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-12-21 02:26:09,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2023-12-21 02:26:09,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 65 states have (on average 1.3692307692307693) internal successors, (89), 65 states have internal predecessors, (89), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-21 02:26:09,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 117 transitions. [2023-12-21 02:26:09,029 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 117 transitions. Word has length 104 [2023-12-21 02:26:09,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:26:09,029 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 117 transitions. [2023-12-21 02:26:09,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-21 02:26:09,030 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 117 transitions. [2023-12-21 02:26:09,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-21 02:26:09,031 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:26:09,031 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:26:09,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 02:26:09,031 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:26:09,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:26:09,032 INFO L85 PathProgramCache]: Analyzing trace with hash 2050471137, now seen corresponding path program 1 times [2023-12-21 02:26:09,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:26:09,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853684905] [2023-12-21 02:26:09,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:26:09,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:26:09,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:09,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:26:09,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:09,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:26:09,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:09,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:26:09,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:09,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:26:09,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:09,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:26:09,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:09,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:26:09,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:09,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:26:09,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:09,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:26:09,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:09,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:26:09,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:09,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:26:09,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:09,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:26:09,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:09,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:26:09,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:09,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:26:09,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:09,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:26:09,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:09,779 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-21 02:26:09,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:26:09,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853684905] [2023-12-21 02:26:09,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853684905] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:26:09,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:26:09,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 02:26:09,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393729702] [2023-12-21 02:26:09,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:26:09,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 02:26:09,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:26:09,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 02:26:09,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 02:26:09,781 INFO L87 Difference]: Start difference. First operand 81 states and 117 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-21 02:26:09,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:26:09,994 INFO L93 Difference]: Finished difference Result 241 states and 349 transitions. [2023-12-21 02:26:09,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 02:26:09,995 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 104 [2023-12-21 02:26:09,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:26:10,001 INFO L225 Difference]: With dead ends: 241 [2023-12-21 02:26:10,001 INFO L226 Difference]: Without dead ends: 161 [2023-12-21 02:26:10,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 02:26:10,008 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 74 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 02:26:10,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 254 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 02:26:10,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-12-21 02:26:10,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 153. [2023-12-21 02:26:10,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 122 states have (on average 1.3524590163934427) internal successors, (165), 122 states have internal predecessors, (165), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-21 02:26:10,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 221 transitions. [2023-12-21 02:26:10,039 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 221 transitions. Word has length 104 [2023-12-21 02:26:10,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:26:10,041 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 221 transitions. [2023-12-21 02:26:10,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-21 02:26:10,041 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 221 transitions. [2023-12-21 02:26:10,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-21 02:26:10,047 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:26:10,047 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:26:10,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 02:26:10,047 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:26:10,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:26:10,048 INFO L85 PathProgramCache]: Analyzing trace with hash 2064766436, now seen corresponding path program 1 times [2023-12-21 02:26:10,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:26:10,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53920139] [2023-12-21 02:26:10,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:26:10,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:26:10,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:12,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:26:12,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:12,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:26:12,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:12,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:26:12,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:12,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:26:12,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:12,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:26:12,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:12,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:26:12,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:12,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:26:12,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:12,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:26:12,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:12,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:26:12,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:12,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:26:12,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:12,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:26:12,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:12,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:26:12,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:12,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:26:12,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:12,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:26:12,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:12,160 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-21 02:26:12,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:26:12,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53920139] [2023-12-21 02:26:12,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53920139] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:26:12,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:26:12,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 02:26:12,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772832468] [2023-12-21 02:26:12,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:26:12,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 02:26:12,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:26:12,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 02:26:12,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-12-21 02:26:12,164 INFO L87 Difference]: Start difference. First operand 153 states and 221 transitions. Second operand has 12 states, 9 states have (on average 4.222222222222222) internal successors, (38), 12 states have internal predecessors, (38), 4 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 4 states have call successors, (14) [2023-12-21 02:26:13,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:26:13,098 INFO L93 Difference]: Finished difference Result 500 states and 723 transitions. [2023-12-21 02:26:13,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 02:26:13,099 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 4.222222222222222) internal successors, (38), 12 states have internal predecessors, (38), 4 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 4 states have call successors, (14) Word has length 105 [2023-12-21 02:26:13,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:26:13,101 INFO L225 Difference]: With dead ends: 500 [2023-12-21 02:26:13,101 INFO L226 Difference]: Without dead ends: 348 [2023-12-21 02:26:13,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2023-12-21 02:26:13,102 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 298 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 02:26:13,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 632 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 02:26:13,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2023-12-21 02:26:13,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 169. [2023-12-21 02:26:13,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 138 states have (on average 1.3623188405797102) internal successors, (188), 138 states have internal predecessors, (188), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-21 02:26:13,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 244 transitions. [2023-12-21 02:26:13,132 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 244 transitions. Word has length 105 [2023-12-21 02:26:13,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:26:13,132 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 244 transitions. [2023-12-21 02:26:13,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 4.222222222222222) internal successors, (38), 12 states have internal predecessors, (38), 4 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 4 states have call successors, (14) [2023-12-21 02:26:13,133 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 244 transitions. [2023-12-21 02:26:13,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-21 02:26:13,134 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:26:13,135 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:26:13,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 02:26:13,135 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:26:13,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:26:13,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1972035422, now seen corresponding path program 1 times [2023-12-21 02:26:13,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:26:13,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575830015] [2023-12-21 02:26:13,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:26:13,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:26:13,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:13,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:26:13,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:13,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:26:13,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:13,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:26:13,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:13,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:26:13,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:13,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:26:13,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:13,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:26:13,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:13,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:26:13,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:13,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:26:13,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:13,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:26:13,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:13,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:26:13,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:13,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:26:13,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:13,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:26:13,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:13,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:26:13,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:13,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:26:13,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:13,667 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-21 02:26:13,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:26:13,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575830015] [2023-12-21 02:26:13,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575830015] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:26:13,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:26:13,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 02:26:13,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297229011] [2023-12-21 02:26:13,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:26:13,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 02:26:13,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:26:13,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 02:26:13,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 02:26:13,670 INFO L87 Difference]: Start difference. First operand 169 states and 244 transitions. Second operand has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 02:26:14,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:26:14,105 INFO L93 Difference]: Finished difference Result 419 states and 598 transitions. [2023-12-21 02:26:14,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 02:26:14,105 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) Word has length 105 [2023-12-21 02:26:14,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:26:14,107 INFO L225 Difference]: With dead ends: 419 [2023-12-21 02:26:14,107 INFO L226 Difference]: Without dead ends: 331 [2023-12-21 02:26:14,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-12-21 02:26:14,108 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 290 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 02:26:14,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 355 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 02:26:14,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2023-12-21 02:26:14,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 203. [2023-12-21 02:26:14,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 164 states have (on average 1.3475609756097562) internal successors, (221), 165 states have internal predecessors, (221), 34 states have call successors, (34), 4 states have call predecessors, (34), 4 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-21 02:26:14,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 289 transitions. [2023-12-21 02:26:14,133 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 289 transitions. Word has length 105 [2023-12-21 02:26:14,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:26:14,134 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 289 transitions. [2023-12-21 02:26:14,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 02:26:14,134 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 289 transitions. [2023-12-21 02:26:14,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-21 02:26:14,136 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:26:14,136 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:26:14,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 02:26:14,136 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:26:14,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:26:14,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1043698082, now seen corresponding path program 1 times [2023-12-21 02:26:14,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:26:14,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238033105] [2023-12-21 02:26:14,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:26:14,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:26:14,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:14,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:26:14,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:14,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:26:14,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:14,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:26:14,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:14,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:26:14,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:14,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:26:14,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:14,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:26:14,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:14,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:26:14,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:14,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:26:14,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:14,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:26:14,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:14,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:26:14,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:14,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:26:14,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:14,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:26:14,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:14,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:26:14,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:14,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:26:14,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:14,803 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-21 02:26:14,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:26:14,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238033105] [2023-12-21 02:26:14,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238033105] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:26:14,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:26:14,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 02:26:14,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749770027] [2023-12-21 02:26:14,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:26:14,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 02:26:14,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:26:14,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 02:26:14,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 02:26:14,806 INFO L87 Difference]: Start difference. First operand 203 states and 289 transitions. Second operand has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 7 states have internal predecessors, (38), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 02:26:15,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:26:15,285 INFO L93 Difference]: Finished difference Result 529 states and 746 transitions. [2023-12-21 02:26:15,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 02:26:15,286 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 7 states have internal predecessors, (38), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) Word has length 105 [2023-12-21 02:26:15,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:26:15,289 INFO L225 Difference]: With dead ends: 529 [2023-12-21 02:26:15,289 INFO L226 Difference]: Without dead ends: 333 [2023-12-21 02:26:15,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-12-21 02:26:15,290 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 215 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 02:26:15,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 331 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 02:26:15,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2023-12-21 02:26:15,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 263. [2023-12-21 02:26:15,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 208 states have (on average 1.3125) internal successors, (273), 210 states have internal predecessors, (273), 48 states have call successors, (48), 6 states have call predecessors, (48), 6 states have return successors, (48), 46 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-21 02:26:15,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 369 transitions. [2023-12-21 02:26:15,329 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 369 transitions. Word has length 105 [2023-12-21 02:26:15,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:26:15,329 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 369 transitions. [2023-12-21 02:26:15,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 7 states have internal predecessors, (38), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 02:26:15,329 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 369 transitions. [2023-12-21 02:26:15,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-21 02:26:15,330 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:26:15,330 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:26:15,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 02:26:15,330 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:26:15,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:26:15,331 INFO L85 PathProgramCache]: Analyzing trace with hash -647041737, now seen corresponding path program 1 times [2023-12-21 02:26:15,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:26:15,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119146985] [2023-12-21 02:26:15,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:26:15,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:26:15,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:15,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:26:15,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:15,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:26:15,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:15,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:26:15,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:15,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:26:15,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:15,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:26:15,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:15,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:26:15,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:15,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:26:15,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:15,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:26:15,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:15,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:26:15,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:15,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:26:15,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:15,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:26:15,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:15,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:26:15,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:15,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:26:15,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:15,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:26:15,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:15,732 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-21 02:26:15,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:26:15,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119146985] [2023-12-21 02:26:15,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119146985] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:26:15,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:26:15,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 02:26:15,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111379717] [2023-12-21 02:26:15,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:26:15,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 02:26:15,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:26:15,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 02:26:15,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 02:26:15,734 INFO L87 Difference]: Start difference. First operand 263 states and 369 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-21 02:26:15,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:26:15,860 INFO L93 Difference]: Finished difference Result 453 states and 635 transitions. [2023-12-21 02:26:15,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 02:26:15,861 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 106 [2023-12-21 02:26:15,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:26:15,863 INFO L225 Difference]: With dead ends: 453 [2023-12-21 02:26:15,863 INFO L226 Difference]: Without dead ends: 197 [2023-12-21 02:26:15,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 02:26:15,866 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 105 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 02:26:15,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 235 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 02:26:15,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2023-12-21 02:26:15,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 189. [2023-12-21 02:26:15,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 150 states have (on average 1.3066666666666666) internal successors, (196), 151 states have internal predecessors, (196), 34 states have call successors, (34), 4 states have call predecessors, (34), 4 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-21 02:26:15,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 264 transitions. [2023-12-21 02:26:15,888 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 264 transitions. Word has length 106 [2023-12-21 02:26:15,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:26:15,888 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 264 transitions. [2023-12-21 02:26:15,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-21 02:26:15,888 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 264 transitions. [2023-12-21 02:26:15,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-21 02:26:15,889 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:26:15,889 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:26:15,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 02:26:15,889 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:26:15,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:26:15,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1475694180, now seen corresponding path program 1 times [2023-12-21 02:26:15,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:26:15,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080530546] [2023-12-21 02:26:15,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:26:15,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:26:15,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:15,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:26:15,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:15,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:26:15,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:15,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:26:15,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:15,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:26:15,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:15,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:26:15,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:15,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:26:15,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:15,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:26:15,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:15,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:26:15,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:15,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:26:15,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:15,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:26:15,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:15,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:26:15,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:15,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:26:15,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:15,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:26:15,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:15,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:26:15,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:15,947 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-21 02:26:15,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:26:15,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080530546] [2023-12-21 02:26:15,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080530546] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:26:15,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:26:15,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 02:26:15,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995292708] [2023-12-21 02:26:15,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:26:15,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 02:26:15,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:26:15,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 02:26:15,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 02:26:15,949 INFO L87 Difference]: Start difference. First operand 189 states and 264 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-21 02:26:15,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:26:15,974 INFO L93 Difference]: Finished difference Result 401 states and 559 transitions. [2023-12-21 02:26:15,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 02:26:15,975 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 108 [2023-12-21 02:26:15,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:26:15,977 INFO L225 Difference]: With dead ends: 401 [2023-12-21 02:26:15,977 INFO L226 Difference]: Without dead ends: 225 [2023-12-21 02:26:15,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 02:26:15,979 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 30 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 02:26:15,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 218 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 02:26:15,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2023-12-21 02:26:15,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 191. [2023-12-21 02:26:15,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 152 states have (on average 1.3026315789473684) internal successors, (198), 153 states have internal predecessors, (198), 34 states have call successors, (34), 4 states have call predecessors, (34), 4 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-21 02:26:15,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 266 transitions. [2023-12-21 02:26:15,999 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 266 transitions. Word has length 108 [2023-12-21 02:26:15,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:26:15,999 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 266 transitions. [2023-12-21 02:26:15,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-21 02:26:15,999 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 266 transitions. [2023-12-21 02:26:16,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-21 02:26:16,000 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:26:16,000 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:26:16,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 02:26:16,000 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:26:16,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:26:16,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1217528742, now seen corresponding path program 1 times [2023-12-21 02:26:16,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:26:16,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139895056] [2023-12-21 02:26:16,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:26:16,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:26:16,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:16,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:26:16,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:16,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:26:16,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:16,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:26:16,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:16,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:26:16,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:16,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:26:16,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:16,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:26:16,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:16,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:26:16,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:16,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:26:16,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:16,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:26:16,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:16,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:26:16,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:16,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:26:16,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:16,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:26:16,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:16,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:26:16,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:16,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:26:16,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:16,109 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-21 02:26:16,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:26:16,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139895056] [2023-12-21 02:26:16,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139895056] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:26:16,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:26:16,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 02:26:16,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126071935] [2023-12-21 02:26:16,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:26:16,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 02:26:16,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:26:16,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 02:26:16,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 02:26:16,111 INFO L87 Difference]: Start difference. First operand 191 states and 266 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-21 02:26:16,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:26:16,158 INFO L93 Difference]: Finished difference Result 399 states and 555 transitions. [2023-12-21 02:26:16,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 02:26:16,158 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 108 [2023-12-21 02:26:16,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:26:16,160 INFO L225 Difference]: With dead ends: 399 [2023-12-21 02:26:16,160 INFO L226 Difference]: Without dead ends: 221 [2023-12-21 02:26:16,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 02:26:16,162 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 63 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 02:26:16,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 401 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 02:26:16,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2023-12-21 02:26:16,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 197. [2023-12-21 02:26:16,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 158 states have (on average 1.2911392405063291) internal successors, (204), 159 states have internal predecessors, (204), 34 states have call successors, (34), 4 states have call predecessors, (34), 4 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-21 02:26:16,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 272 transitions. [2023-12-21 02:26:16,181 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 272 transitions. Word has length 108 [2023-12-21 02:26:16,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:26:16,181 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 272 transitions. [2023-12-21 02:26:16,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-21 02:26:16,181 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 272 transitions. [2023-12-21 02:26:16,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-21 02:26:16,182 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:26:16,182 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:26:16,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 02:26:16,183 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:26:16,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:26:16,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1897635123, now seen corresponding path program 1 times [2023-12-21 02:26:16,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:26:16,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811829148] [2023-12-21 02:26:16,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:26:16,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:26:16,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:17,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:26:17,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:17,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:26:17,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:17,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:26:17,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:17,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:26:17,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:17,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:26:17,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:17,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:26:17,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:17,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:26:17,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:17,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:26:17,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:17,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:26:17,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:17,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:26:17,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:17,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:26:17,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:17,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:26:17,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:17,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:26:17,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:17,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:26:17,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:17,286 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-21 02:26:17,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:26:17,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811829148] [2023-12-21 02:26:17,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811829148] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:26:17,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:26:17,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 02:26:17,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901989598] [2023-12-21 02:26:17,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:26:17,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 02:26:17,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:26:17,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 02:26:17,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-12-21 02:26:17,287 INFO L87 Difference]: Start difference. First operand 197 states and 272 transitions. Second operand has 12 states, 10 states have (on average 4.1) internal successors, (41), 12 states have internal predecessors, (41), 3 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-21 02:26:19,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:26:19,112 INFO L93 Difference]: Finished difference Result 521 states and 714 transitions. [2023-12-21 02:26:19,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-21 02:26:19,114 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 4.1) internal successors, (41), 12 states have internal predecessors, (41), 3 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 3 states have call successors, (14) Word has length 108 [2023-12-21 02:26:19,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:26:19,116 INFO L225 Difference]: With dead ends: 521 [2023-12-21 02:26:19,116 INFO L226 Difference]: Without dead ends: 417 [2023-12-21 02:26:19,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=127, Invalid=629, Unknown=0, NotChecked=0, Total=756 [2023-12-21 02:26:19,117 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 400 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 1344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-21 02:26:19,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 558 Invalid, 1344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-21 02:26:19,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2023-12-21 02:26:19,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 189. [2023-12-21 02:26:19,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 156 states have (on average 1.3076923076923077) internal successors, (204), 156 states have internal predecessors, (204), 28 states have call successors, (28), 4 states have call predecessors, (28), 4 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-21 02:26:19,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 260 transitions. [2023-12-21 02:26:19,142 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 260 transitions. Word has length 108 [2023-12-21 02:26:19,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:26:19,143 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 260 transitions. [2023-12-21 02:26:19,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 4.1) internal successors, (41), 12 states have internal predecessors, (41), 3 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-21 02:26:19,143 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 260 transitions. [2023-12-21 02:26:19,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-21 02:26:19,144 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:26:19,144 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:26:19,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 02:26:19,144 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:26:19,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:26:19,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1376263819, now seen corresponding path program 1 times [2023-12-21 02:26:19,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:26:19,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381924174] [2023-12-21 02:26:19,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:26:19,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:26:19,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:21,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:26:21,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:21,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:26:21,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:21,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:26:21,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:21,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:26:21,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:21,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:26:21,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:21,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:26:21,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:21,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:26:21,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:21,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:26:21,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:21,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:26:21,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:21,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:26:21,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:21,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:26:21,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:21,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:26:21,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:21,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:26:21,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:21,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:26:21,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:21,833 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-21 02:26:21,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:26:21,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381924174] [2023-12-21 02:26:21,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381924174] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:26:21,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:26:21,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 02:26:21,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509906578] [2023-12-21 02:26:21,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:26:21,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 02:26:21,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:26:21,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 02:26:21,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-12-21 02:26:21,835 INFO L87 Difference]: Start difference. First operand 189 states and 260 transitions. Second operand has 10 states, 7 states have (on average 5.857142857142857) internal successors, (41), 10 states have internal predecessors, (41), 4 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 4 states have call successors, (14) [2023-12-21 02:26:22,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:26:22,216 INFO L93 Difference]: Finished difference Result 334 states and 461 transitions. [2023-12-21 02:26:22,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 02:26:22,216 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 5.857142857142857) internal successors, (41), 10 states have internal predecessors, (41), 4 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 4 states have call successors, (14) Word has length 108 [2023-12-21 02:26:22,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:26:22,219 INFO L225 Difference]: With dead ends: 334 [2023-12-21 02:26:22,219 INFO L226 Difference]: Without dead ends: 226 [2023-12-21 02:26:22,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-12-21 02:26:22,220 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 184 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 02:26:22,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 639 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 02:26:22,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2023-12-21 02:26:22,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 189. [2023-12-21 02:26:22,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 156 states have (on average 1.3076923076923077) internal successors, (204), 156 states have internal predecessors, (204), 28 states have call successors, (28), 4 states have call predecessors, (28), 4 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-21 02:26:22,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 260 transitions. [2023-12-21 02:26:22,244 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 260 transitions. Word has length 108 [2023-12-21 02:26:22,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:26:22,244 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 260 transitions. [2023-12-21 02:26:22,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 5.857142857142857) internal successors, (41), 10 states have internal predecessors, (41), 4 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 4 states have call successors, (14) [2023-12-21 02:26:22,244 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 260 transitions. [2023-12-21 02:26:22,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-21 02:26:22,245 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:26:22,245 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:26:22,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 02:26:22,246 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:26:22,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:26:22,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1579683723, now seen corresponding path program 1 times [2023-12-21 02:26:22,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:26:22,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438205905] [2023-12-21 02:26:22,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:26:22,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:26:22,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:22,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:26:22,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:22,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:26:22,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:22,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:26:22,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:22,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:26:22,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:22,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:26:22,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:22,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:26:22,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:22,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:26:22,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:22,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:26:22,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:22,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:26:22,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:22,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:26:22,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:22,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:26:22,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:22,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:26:22,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:22,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:26:22,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:22,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:26:22,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:22,791 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-21 02:26:22,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:26:22,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438205905] [2023-12-21 02:26:22,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438205905] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:26:22,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:26:22,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 02:26:22,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413726879] [2023-12-21 02:26:22,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:26:22,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 02:26:22,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:26:22,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 02:26:22,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-21 02:26:22,792 INFO L87 Difference]: Start difference. First operand 189 states and 260 transitions. Second operand has 9 states, 8 states have (on average 5.125) internal successors, (41), 9 states have internal predecessors, (41), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 02:26:23,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:26:23,422 INFO L93 Difference]: Finished difference Result 445 states and 607 transitions. [2023-12-21 02:26:23,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 02:26:23,423 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.125) internal successors, (41), 9 states have internal predecessors, (41), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) Word has length 108 [2023-12-21 02:26:23,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:26:23,424 INFO L225 Difference]: With dead ends: 445 [2023-12-21 02:26:23,424 INFO L226 Difference]: Without dead ends: 337 [2023-12-21 02:26:23,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2023-12-21 02:26:23,425 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 364 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 02:26:23,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 306 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 02:26:23,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2023-12-21 02:26:23,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 177. [2023-12-21 02:26:23,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 144 states have (on average 1.2847222222222223) internal successors, (185), 144 states have internal predecessors, (185), 28 states have call successors, (28), 4 states have call predecessors, (28), 4 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-21 02:26:23,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 241 transitions. [2023-12-21 02:26:23,464 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 241 transitions. Word has length 108 [2023-12-21 02:26:23,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:26:23,464 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 241 transitions. [2023-12-21 02:26:23,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.125) internal successors, (41), 9 states have internal predecessors, (41), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 02:26:23,465 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 241 transitions. [2023-12-21 02:26:23,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-21 02:26:23,465 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:26:23,465 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:26:23,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 02:26:23,466 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:26:23,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:26:23,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1541036681, now seen corresponding path program 1 times [2023-12-21 02:26:23,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:26:23,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548372117] [2023-12-21 02:26:23,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:26:23,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:26:23,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:24,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:26:24,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:24,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:26:24,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:24,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:26:24,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:24,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:26:24,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:24,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:26:24,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:24,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:26:24,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:24,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:26:24,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:24,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:26:24,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:24,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:26:24,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:24,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:26:24,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:24,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:26:24,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:24,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:26:24,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:24,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:26:24,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:24,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:26:24,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:24,089 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-21 02:26:24,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:26:24,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548372117] [2023-12-21 02:26:24,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548372117] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:26:24,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:26:24,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 02:26:24,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720973693] [2023-12-21 02:26:24,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:26:24,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 02:26:24,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:26:24,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 02:26:24,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-21 02:26:24,092 INFO L87 Difference]: Start difference. First operand 177 states and 241 transitions. Second operand has 11 states, 10 states have (on average 4.3) internal successors, (43), 11 states have internal predecessors, (43), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 02:26:24,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:26:24,813 INFO L93 Difference]: Finished difference Result 484 states and 658 transitions. [2023-12-21 02:26:24,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-21 02:26:24,813 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.3) internal successors, (43), 11 states have internal predecessors, (43), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) Word has length 110 [2023-12-21 02:26:24,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:26:24,815 INFO L225 Difference]: With dead ends: 484 [2023-12-21 02:26:24,815 INFO L226 Difference]: Without dead ends: 388 [2023-12-21 02:26:24,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=182, Invalid=520, Unknown=0, NotChecked=0, Total=702 [2023-12-21 02:26:24,816 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 364 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 02:26:24,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 705 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 02:26:24,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2023-12-21 02:26:24,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 190. [2023-12-21 02:26:24,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 157 states have (on average 1.2993630573248407) internal successors, (204), 157 states have internal predecessors, (204), 28 states have call successors, (28), 4 states have call predecessors, (28), 4 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-21 02:26:24,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 260 transitions. [2023-12-21 02:26:24,838 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 260 transitions. Word has length 110 [2023-12-21 02:26:24,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:26:24,839 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 260 transitions. [2023-12-21 02:26:24,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.3) internal successors, (43), 11 states have internal predecessors, (43), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 02:26:24,839 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 260 transitions. [2023-12-21 02:26:24,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-21 02:26:24,839 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:26:24,840 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:26:24,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 02:26:24,840 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:26:24,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:26:24,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1069309923, now seen corresponding path program 1 times [2023-12-21 02:26:24,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:26:24,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014865280] [2023-12-21 02:26:24,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:26:24,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:26:24,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:25,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:26:25,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:25,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:26:25,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:25,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:26:25,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:25,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:26:25,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:25,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:26:25,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:25,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:26:25,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:25,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:26:25,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:25,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:26:25,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:25,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:26:25,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:25,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:26:25,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:25,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:26:25,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:25,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:26:25,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:25,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:26:25,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:25,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:26:25,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:25,628 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-21 02:26:25,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:26:25,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014865280] [2023-12-21 02:26:25,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014865280] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:26:25,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:26:25,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 02:26:25,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074945303] [2023-12-21 02:26:25,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:26:25,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 02:26:25,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:26:25,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 02:26:25,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-21 02:26:25,629 INFO L87 Difference]: Start difference. First operand 190 states and 260 transitions. Second operand has 10 states, 8 states have (on average 5.375) internal successors, (43), 10 states have internal predecessors, (43), 3 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-21 02:26:26,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:26:26,302 INFO L93 Difference]: Finished difference Result 413 states and 566 transitions. [2023-12-21 02:26:26,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 02:26:26,303 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 5.375) internal successors, (43), 10 states have internal predecessors, (43), 3 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 3 states have call successors, (14) Word has length 110 [2023-12-21 02:26:26,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:26:26,304 INFO L225 Difference]: With dead ends: 413 [2023-12-21 02:26:26,304 INFO L226 Difference]: Without dead ends: 304 [2023-12-21 02:26:26,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2023-12-21 02:26:26,305 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 283 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 02:26:26,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 504 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 02:26:26,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2023-12-21 02:26:26,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 236. [2023-12-21 02:26:26,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 198 states have (on average 1.3181818181818181) internal successors, (261), 199 states have internal predecessors, (261), 32 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-21 02:26:26,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 325 transitions. [2023-12-21 02:26:26,344 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 325 transitions. Word has length 110 [2023-12-21 02:26:26,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:26:26,344 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 325 transitions. [2023-12-21 02:26:26,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 5.375) internal successors, (43), 10 states have internal predecessors, (43), 3 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-21 02:26:26,345 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 325 transitions. [2023-12-21 02:26:26,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-21 02:26:26,345 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:26:26,345 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:26:26,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 02:26:26,346 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:26:26,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:26:26,346 INFO L85 PathProgramCache]: Analyzing trace with hash -475173374, now seen corresponding path program 1 times [2023-12-21 02:26:26,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:26:26,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886748173] [2023-12-21 02:26:26,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:26:26,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:26:26,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:26,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:26:26,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:26,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:26:26,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:26,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:26:26,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:26,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:26:26,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:26,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:26:26,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:26,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:26:26,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:26,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:26:26,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:26,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:26:26,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:26,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:26:26,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:26,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:26:26,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:26,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:26:26,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:26,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:26:26,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:26,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:26:26,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:26,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:26:26,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:26,687 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-21 02:26:26,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:26:26,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886748173] [2023-12-21 02:26:26,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886748173] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:26:26,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:26:26,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 02:26:26,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084331922] [2023-12-21 02:26:26,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:26:26,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 02:26:26,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:26:26,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 02:26:26,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 02:26:26,688 INFO L87 Difference]: Start difference. First operand 236 states and 325 transitions. Second operand has 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 02:26:26,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:26:26,916 INFO L93 Difference]: Finished difference Result 526 states and 722 transitions. [2023-12-21 02:26:26,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 02:26:26,916 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) Word has length 111 [2023-12-21 02:26:26,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:26:26,918 INFO L225 Difference]: With dead ends: 526 [2023-12-21 02:26:26,918 INFO L226 Difference]: Without dead ends: 303 [2023-12-21 02:26:26,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 02:26:26,920 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 122 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 02:26:26,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 256 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 02:26:26,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2023-12-21 02:26:26,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 288. [2023-12-21 02:26:26,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 249 states have (on average 1.321285140562249) internal successors, (329), 250 states have internal predecessors, (329), 32 states have call successors, (32), 6 states have call predecessors, (32), 6 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-21 02:26:26,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 393 transitions. [2023-12-21 02:26:26,948 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 393 transitions. Word has length 111 [2023-12-21 02:26:26,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:26:26,949 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 393 transitions. [2023-12-21 02:26:26,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 02:26:26,949 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 393 transitions. [2023-12-21 02:26:26,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-21 02:26:26,950 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:26:26,950 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:26:26,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 02:26:26,950 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:26:26,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:26:26,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1292821824, now seen corresponding path program 1 times [2023-12-21 02:26:26,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:26:26,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150205277] [2023-12-21 02:26:26,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:26:26,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:26:26,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:27,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:26:27,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:27,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:26:27,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:27,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:26:27,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:27,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:26:27,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:27,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:26:27,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:27,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:26:27,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:27,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:26:27,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:27,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:26:27,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:27,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:26:27,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:27,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:26:27,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:27,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:26:27,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:27,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:26:27,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:27,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:26:27,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:27,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:26:27,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:27,443 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-21 02:26:27,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:26:27,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150205277] [2023-12-21 02:26:27,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150205277] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:26:27,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:26:27,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 02:26:27,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323585770] [2023-12-21 02:26:27,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:26:27,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 02:26:27,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:26:27,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 02:26:27,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-21 02:26:27,445 INFO L87 Difference]: Start difference. First operand 288 states and 393 transitions. Second operand has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 02:26:27,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:26:27,958 INFO L93 Difference]: Finished difference Result 665 states and 901 transitions. [2023-12-21 02:26:27,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 02:26:27,959 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) Word has length 111 [2023-12-21 02:26:27,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:26:27,960 INFO L225 Difference]: With dead ends: 665 [2023-12-21 02:26:27,960 INFO L226 Difference]: Without dead ends: 378 [2023-12-21 02:26:27,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-12-21 02:26:27,961 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 262 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 02:26:27,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 397 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 643 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 02:26:27,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2023-12-21 02:26:27,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 287. [2023-12-21 02:26:27,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 248 states have (on average 1.3185483870967742) internal successors, (327), 249 states have internal predecessors, (327), 32 states have call successors, (32), 6 states have call predecessors, (32), 6 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-21 02:26:27,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 391 transitions. [2023-12-21 02:26:27,995 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 391 transitions. Word has length 111 [2023-12-21 02:26:27,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:26:27,996 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 391 transitions. [2023-12-21 02:26:27,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 02:26:27,996 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 391 transitions. [2023-12-21 02:26:27,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-21 02:26:27,997 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:26:27,997 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:26:27,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 02:26:27,997 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:26:27,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:26:27,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1317524780, now seen corresponding path program 1 times [2023-12-21 02:26:27,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:26:27,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138950140] [2023-12-21 02:26:27,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:26:27,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:26:28,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:28,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:26:28,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:28,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:26:28,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:28,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:26:28,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:28,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:26:28,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:28,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:26:28,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:28,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:26:28,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:28,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:26:28,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:28,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:26:28,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:28,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:26:28,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:28,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:26:28,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:28,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:26:28,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:28,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:26:28,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:28,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:26:28,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:28,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:26:28,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:28,423 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-21 02:26:28,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:26:28,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138950140] [2023-12-21 02:26:28,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138950140] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:26:28,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:26:28,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 02:26:28,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958377785] [2023-12-21 02:26:28,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:26:28,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 02:26:28,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:26:28,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 02:26:28,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 02:26:28,426 INFO L87 Difference]: Start difference. First operand 287 states and 391 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-21 02:26:28,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:26:28,582 INFO L93 Difference]: Finished difference Result 578 states and 785 transitions. [2023-12-21 02:26:28,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 02:26:28,583 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 111 [2023-12-21 02:26:28,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:26:28,584 INFO L225 Difference]: With dead ends: 578 [2023-12-21 02:26:28,584 INFO L226 Difference]: Without dead ends: 292 [2023-12-21 02:26:28,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 02:26:28,585 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 71 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 02:26:28,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 217 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 02:26:28,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2023-12-21 02:26:28,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 287. [2023-12-21 02:26:28,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 248 states have (on average 1.314516129032258) internal successors, (326), 249 states have internal predecessors, (326), 32 states have call successors, (32), 6 states have call predecessors, (32), 6 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-21 02:26:28,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 390 transitions. [2023-12-21 02:26:28,615 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 390 transitions. Word has length 111 [2023-12-21 02:26:28,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:26:28,615 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 390 transitions. [2023-12-21 02:26:28,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-21 02:26:28,616 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 390 transitions. [2023-12-21 02:26:28,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-21 02:26:28,616 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:26:28,616 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:26:28,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 02:26:28,617 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:26:28,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:26:28,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1991028222, now seen corresponding path program 1 times [2023-12-21 02:26:28,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:26:28,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608760576] [2023-12-21 02:26:28,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:26:28,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:26:28,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:29,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:26:29,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:29,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:26:29,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:29,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:26:29,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:29,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:26:29,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:29,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:26:29,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:29,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:26:29,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:29,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:26:29,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:29,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:26:29,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:29,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:26:29,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:29,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:26:29,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:29,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:26:29,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:29,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:26:29,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:29,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:26:29,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:29,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:26:29,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:29,024 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-21 02:26:29,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:26:29,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608760576] [2023-12-21 02:26:29,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608760576] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:26:29,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:26:29,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 02:26:29,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944392160] [2023-12-21 02:26:29,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:26:29,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 02:26:29,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:26:29,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 02:26:29,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 02:26:29,026 INFO L87 Difference]: Start difference. First operand 287 states and 390 transitions. Second operand has 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 02:26:29,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:26:29,260 INFO L93 Difference]: Finished difference Result 591 states and 801 transitions. [2023-12-21 02:26:29,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 02:26:29,260 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) Word has length 111 [2023-12-21 02:26:29,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:26:29,261 INFO L225 Difference]: With dead ends: 591 [2023-12-21 02:26:29,261 INFO L226 Difference]: Without dead ends: 305 [2023-12-21 02:26:29,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 02:26:29,262 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 181 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 02:26:29,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 303 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 02:26:29,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2023-12-21 02:26:29,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 275. [2023-12-21 02:26:29,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 236 states have (on average 1.3008474576271187) internal successors, (307), 237 states have internal predecessors, (307), 32 states have call successors, (32), 6 states have call predecessors, (32), 6 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-21 02:26:29,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 371 transitions. [2023-12-21 02:26:29,292 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 371 transitions. Word has length 111 [2023-12-21 02:26:29,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:26:29,292 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 371 transitions. [2023-12-21 02:26:29,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 02:26:29,292 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 371 transitions. [2023-12-21 02:26:29,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-21 02:26:29,293 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:26:29,293 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:26:29,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 02:26:29,293 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:26:29,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:26:29,294 INFO L85 PathProgramCache]: Analyzing trace with hash -584174144, now seen corresponding path program 1 times [2023-12-21 02:26:29,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:26:29,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786352086] [2023-12-21 02:26:29,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:26:29,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:26:29,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:30,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:26:30,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:30,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:26:30,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:30,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:26:30,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:30,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:26:30,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:30,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:26:30,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:30,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:26:30,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:30,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:26:30,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:30,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:26:30,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:30,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:26:30,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:30,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:26:30,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:30,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:26:30,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:30,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:26:30,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:30,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:26:30,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:30,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:26:30,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:30,281 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-21 02:26:30,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:26:30,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786352086] [2023-12-21 02:26:30,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786352086] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:26:30,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:26:30,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 02:26:30,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729213020] [2023-12-21 02:26:30,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:26:30,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 02:26:30,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:26:30,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 02:26:30,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-12-21 02:26:30,284 INFO L87 Difference]: Start difference. First operand 275 states and 371 transitions. Second operand has 10 states, 8 states have (on average 5.625) internal successors, (45), 10 states have internal predecessors, (45), 3 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-21 02:26:30,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:26:30,673 INFO L93 Difference]: Finished difference Result 304 states and 406 transitions. [2023-12-21 02:26:30,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 02:26:30,674 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 5.625) internal successors, (45), 10 states have internal predecessors, (45), 3 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 3 states have call successors, (14) Word has length 112 [2023-12-21 02:26:30,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:26:30,675 INFO L225 Difference]: With dead ends: 304 [2023-12-21 02:26:30,675 INFO L226 Difference]: Without dead ends: 302 [2023-12-21 02:26:30,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-12-21 02:26:30,675 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 209 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 02:26:30,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 420 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 02:26:30,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2023-12-21 02:26:30,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 281. [2023-12-21 02:26:30,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 242 states have (on average 1.2933884297520661) internal successors, (313), 243 states have internal predecessors, (313), 32 states have call successors, (32), 6 states have call predecessors, (32), 6 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-21 02:26:30,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 377 transitions. [2023-12-21 02:26:30,707 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 377 transitions. Word has length 112 [2023-12-21 02:26:30,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:26:30,708 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 377 transitions. [2023-12-21 02:26:30,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 5.625) internal successors, (45), 10 states have internal predecessors, (45), 3 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-21 02:26:30,709 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 377 transitions. [2023-12-21 02:26:30,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-21 02:26:30,709 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:26:30,710 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:26:30,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 02:26:30,710 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:26:30,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:26:30,710 INFO L85 PathProgramCache]: Analyzing trace with hash -584114562, now seen corresponding path program 1 times [2023-12-21 02:26:30,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:26:30,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135835525] [2023-12-21 02:26:30,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:26:30,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:26:30,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:31,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:26:31,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:31,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:26:31,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:31,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:26:31,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:31,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:26:31,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:31,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:26:31,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:31,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:26:31,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:31,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:26:31,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:31,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:26:31,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:31,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:26:31,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:31,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:26:31,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:31,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:26:31,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:31,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:26:31,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:31,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:26:31,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:31,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:26:31,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:31,164 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-21 02:26:31,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:26:31,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135835525] [2023-12-21 02:26:31,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135835525] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:26:31,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:26:31,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 02:26:31,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918622145] [2023-12-21 02:26:31,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:26:31,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 02:26:31,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:26:31,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 02:26:31,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 02:26:31,166 INFO L87 Difference]: Start difference. First operand 281 states and 377 transitions. Second operand has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 02:26:31,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:26:31,438 INFO L93 Difference]: Finished difference Result 602 states and 802 transitions. [2023-12-21 02:26:31,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 02:26:31,439 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) Word has length 112 [2023-12-21 02:26:31,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:26:31,440 INFO L225 Difference]: With dead ends: 602 [2023-12-21 02:26:31,440 INFO L226 Difference]: Without dead ends: 322 [2023-12-21 02:26:31,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-21 02:26:31,441 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 78 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 02:26:31,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 363 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 02:26:31,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2023-12-21 02:26:31,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 321. [2023-12-21 02:26:31,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 266 states have (on average 1.255639097744361) internal successors, (334), 268 states have internal predecessors, (334), 44 states have call successors, (44), 10 states have call predecessors, (44), 10 states have return successors, (44), 42 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-21 02:26:31,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 422 transitions. [2023-12-21 02:26:31,489 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 422 transitions. Word has length 112 [2023-12-21 02:26:31,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:26:31,489 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 422 transitions. [2023-12-21 02:26:31,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 02:26:31,489 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 422 transitions. [2023-12-21 02:26:31,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-21 02:26:31,490 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:26:31,490 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:26:31,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 02:26:31,490 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:26:31,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:26:31,490 INFO L85 PathProgramCache]: Analyzing trace with hash -526856260, now seen corresponding path program 1 times [2023-12-21 02:26:31,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:26:31,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383922988] [2023-12-21 02:26:31,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:26:31,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:26:31,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:32,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:26:32,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:32,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:26:32,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:32,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:26:32,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:32,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:26:32,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:32,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:26:32,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:32,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:26:32,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:32,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:26:32,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:32,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:26:32,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:32,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:26:32,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:32,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:26:32,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:32,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:26:32,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:32,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:26:32,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:32,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:26:32,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:32,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:26:32,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:32,061 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-21 02:26:32,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:26:32,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383922988] [2023-12-21 02:26:32,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383922988] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:26:32,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:26:32,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 02:26:32,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331622754] [2023-12-21 02:26:32,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:26:32,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 02:26:32,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:26:32,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 02:26:32,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 02:26:32,063 INFO L87 Difference]: Start difference. First operand 321 states and 422 transitions. Second operand has 7 states, 6 states have (on average 7.5) internal successors, (45), 7 states have internal predecessors, (45), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 02:26:32,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:26:32,278 INFO L93 Difference]: Finished difference Result 615 states and 804 transitions. [2023-12-21 02:26:32,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 02:26:32,279 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.5) internal successors, (45), 7 states have internal predecessors, (45), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) Word has length 112 [2023-12-21 02:26:32,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:26:32,280 INFO L225 Difference]: With dead ends: 615 [2023-12-21 02:26:32,281 INFO L226 Difference]: Without dead ends: 438 [2023-12-21 02:26:32,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-21 02:26:32,282 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 55 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 02:26:32,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 470 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 02:26:32,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2023-12-21 02:26:32,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 394. [2023-12-21 02:26:32,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 339 states have (on average 1.2595870206489677) internal successors, (427), 341 states have internal predecessors, (427), 44 states have call successors, (44), 10 states have call predecessors, (44), 10 states have return successors, (44), 42 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-21 02:26:32,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 515 transitions. [2023-12-21 02:26:32,324 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 515 transitions. Word has length 112 [2023-12-21 02:26:32,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:26:32,324 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 515 transitions. [2023-12-21 02:26:32,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.5) internal successors, (45), 7 states have internal predecessors, (45), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 02:26:32,324 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 515 transitions. [2023-12-21 02:26:32,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-21 02:26:32,325 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:26:32,325 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:26:32,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-21 02:26:32,325 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:26:32,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:26:32,326 INFO L85 PathProgramCache]: Analyzing trace with hash -533105034, now seen corresponding path program 1 times [2023-12-21 02:26:32,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:26:32,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739893004] [2023-12-21 02:26:32,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:26:32,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:26:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:32,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:26:32,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:32,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:26:32,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:32,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:26:32,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:32,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:26:32,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:32,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:26:32,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:32,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:26:32,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:32,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:26:32,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:32,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:26:32,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:32,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:26:32,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:32,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:26:32,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:32,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:26:32,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:32,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:26:32,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:32,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:26:32,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:32,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:26:32,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:32,498 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-21 02:26:32,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:26:32,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739893004] [2023-12-21 02:26:32,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739893004] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:26:32,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:26:32,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 02:26:32,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452322189] [2023-12-21 02:26:32,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:26:32,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 02:26:32,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:26:32,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 02:26:32,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 02:26:32,499 INFO L87 Difference]: Start difference. First operand 394 states and 515 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-21 02:26:32,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:26:32,901 INFO L93 Difference]: Finished difference Result 778 states and 1011 transitions. [2023-12-21 02:26:32,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 02:26:32,902 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 113 [2023-12-21 02:26:32,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:26:32,904 INFO L225 Difference]: With dead ends: 778 [2023-12-21 02:26:32,904 INFO L226 Difference]: Without dead ends: 540 [2023-12-21 02:26:32,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-12-21 02:26:32,905 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 264 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 02:26:32,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 341 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 02:26:32,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2023-12-21 02:26:32,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 410. [2023-12-21 02:26:32,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 352 states have (on average 1.25) internal successors, (440), 354 states have internal predecessors, (440), 46 states have call successors, (46), 11 states have call predecessors, (46), 11 states have return successors, (46), 44 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-21 02:26:32,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 532 transitions. [2023-12-21 02:26:32,950 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 532 transitions. Word has length 113 [2023-12-21 02:26:32,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:26:32,951 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 532 transitions. [2023-12-21 02:26:32,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-21 02:26:32,951 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 532 transitions. [2023-12-21 02:26:32,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-21 02:26:32,953 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:26:32,953 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:26:32,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-21 02:26:32,953 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:26:32,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:26:32,953 INFO L85 PathProgramCache]: Analyzing trace with hash -2121452936, now seen corresponding path program 1 times [2023-12-21 02:26:32,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:26:32,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376498710] [2023-12-21 02:26:32,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:26:32,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:26:32,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:33,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:26:33,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:33,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:26:33,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:33,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:26:33,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:33,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:26:33,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:33,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:26:33,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:33,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:26:33,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:33,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:26:33,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:33,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:26:33,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:33,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:26:33,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:33,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:26:33,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:33,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:26:33,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:33,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:26:33,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:33,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:26:33,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:33,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:26:33,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:33,337 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-21 02:26:33,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:26:33,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376498710] [2023-12-21 02:26:33,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376498710] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:26:33,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:26:33,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 02:26:33,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780868699] [2023-12-21 02:26:33,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:26:33,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 02:26:33,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:26:33,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 02:26:33,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-21 02:26:33,338 INFO L87 Difference]: Start difference. First operand 410 states and 532 transitions. Second operand has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 8 states have internal predecessors, (46), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 02:26:33,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:26:33,879 INFO L93 Difference]: Finished difference Result 729 states and 947 transitions. [2023-12-21 02:26:33,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 02:26:33,881 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 8 states have internal predecessors, (46), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) Word has length 113 [2023-12-21 02:26:33,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:26:33,883 INFO L225 Difference]: With dead ends: 729 [2023-12-21 02:26:33,883 INFO L226 Difference]: Without dead ends: 491 [2023-12-21 02:26:33,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2023-12-21 02:26:33,885 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 299 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 02:26:33,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 382 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 02:26:33,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2023-12-21 02:26:33,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 410. [2023-12-21 02:26:33,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 352 states have (on average 1.2443181818181819) internal successors, (438), 354 states have internal predecessors, (438), 46 states have call successors, (46), 11 states have call predecessors, (46), 11 states have return successors, (46), 44 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-21 02:26:33,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 530 transitions. [2023-12-21 02:26:33,930 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 530 transitions. Word has length 113 [2023-12-21 02:26:33,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:26:33,930 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 530 transitions. [2023-12-21 02:26:33,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 8 states have internal predecessors, (46), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 02:26:33,930 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 530 transitions. [2023-12-21 02:26:33,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-21 02:26:33,931 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:26:33,931 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:26:33,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-21 02:26:33,931 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:26:33,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:26:33,932 INFO L85 PathProgramCache]: Analyzing trace with hash -162527700, now seen corresponding path program 1 times [2023-12-21 02:26:33,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:26:33,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094183383] [2023-12-21 02:26:33,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:26:33,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:26:33,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:34,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:26:34,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:34,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:26:34,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:34,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:26:34,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:34,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:26:34,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:34,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:26:34,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:34,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:26:34,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:34,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:26:34,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:34,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:26:34,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:34,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:26:34,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:34,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:26:34,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:34,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:26:34,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:34,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:26:34,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:34,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:26:34,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:34,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:26:34,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:34,285 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-21 02:26:34,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:26:34,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094183383] [2023-12-21 02:26:34,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094183383] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:26:34,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:26:34,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 02:26:34,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564288941] [2023-12-21 02:26:34,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:26:34,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 02:26:34,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:26:34,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 02:26:34,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-21 02:26:34,289 INFO L87 Difference]: Start difference. First operand 410 states and 530 transitions. Second operand has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 8 states have internal predecessors, (46), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 02:26:34,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:26:34,783 INFO L93 Difference]: Finished difference Result 728 states and 944 transitions. [2023-12-21 02:26:34,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 02:26:34,783 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 8 states have internal predecessors, (46), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) Word has length 113 [2023-12-21 02:26:34,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:26:34,785 INFO L225 Difference]: With dead ends: 728 [2023-12-21 02:26:34,785 INFO L226 Difference]: Without dead ends: 486 [2023-12-21 02:26:34,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2023-12-21 02:26:34,786 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 165 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 02:26:34,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 425 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 02:26:34,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2023-12-21 02:26:34,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 406. [2023-12-21 02:26:34,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 348 states have (on average 1.2413793103448276) internal successors, (432), 350 states have internal predecessors, (432), 46 states have call successors, (46), 11 states have call predecessors, (46), 11 states have return successors, (46), 44 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-21 02:26:34,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 524 transitions. [2023-12-21 02:26:34,831 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 524 transitions. Word has length 113 [2023-12-21 02:26:34,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:26:34,831 INFO L495 AbstractCegarLoop]: Abstraction has 406 states and 524 transitions. [2023-12-21 02:26:34,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 8 states have internal predecessors, (46), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 02:26:34,832 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 524 transitions. [2023-12-21 02:26:34,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-21 02:26:34,832 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:26:34,832 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:26:34,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-21 02:26:34,832 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:26:34,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:26:34,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1173644950, now seen corresponding path program 1 times [2023-12-21 02:26:34,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:26:34,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271567888] [2023-12-21 02:26:34,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:26:34,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:26:34,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:35,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:26:35,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:35,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:26:35,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:35,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:26:35,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:35,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:26:35,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:35,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:26:35,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:35,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:26:35,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:35,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:26:35,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:35,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:26:35,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:35,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:26:35,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:35,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:26:35,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:35,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:26:35,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:35,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:26:35,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:35,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:26:35,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:35,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:26:35,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:35,254 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-21 02:26:35,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:26:35,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271567888] [2023-12-21 02:26:35,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271567888] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:26:35,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:26:35,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 02:26:35,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075268800] [2023-12-21 02:26:35,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:26:35,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 02:26:35,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:26:35,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 02:26:35,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-21 02:26:35,256 INFO L87 Difference]: Start difference. First operand 406 states and 524 transitions. Second operand has 9 states, 8 states have (on average 5.75) internal successors, (46), 9 states have internal predecessors, (46), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 02:26:35,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:26:35,916 INFO L93 Difference]: Finished difference Result 725 states and 939 transitions. [2023-12-21 02:26:35,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 02:26:35,917 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.75) internal successors, (46), 9 states have internal predecessors, (46), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) Word has length 113 [2023-12-21 02:26:35,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:26:35,919 INFO L225 Difference]: With dead ends: 725 [2023-12-21 02:26:35,919 INFO L226 Difference]: Without dead ends: 487 [2023-12-21 02:26:35,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2023-12-21 02:26:35,920 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 228 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 02:26:35,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 441 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 02:26:35,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2023-12-21 02:26:35,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 410. [2023-12-21 02:26:35,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 352 states have (on average 1.2386363636363635) internal successors, (436), 354 states have internal predecessors, (436), 46 states have call successors, (46), 11 states have call predecessors, (46), 11 states have return successors, (46), 44 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-21 02:26:36,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 528 transitions. [2023-12-21 02:26:36,001 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 528 transitions. Word has length 113 [2023-12-21 02:26:36,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:26:36,001 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 528 transitions. [2023-12-21 02:26:36,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.75) internal successors, (46), 9 states have internal predecessors, (46), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 02:26:36,002 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 528 transitions. [2023-12-21 02:26:36,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-21 02:26:36,003 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:26:36,003 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:26:36,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-21 02:26:36,003 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:26:36,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:26:36,003 INFO L85 PathProgramCache]: Analyzing trace with hash 103281636, now seen corresponding path program 1 times [2023-12-21 02:26:36,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:26:36,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615990633] [2023-12-21 02:26:36,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:26:36,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:26:36,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:36,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:26:36,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:36,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:26:36,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:36,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:26:36,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:36,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:26:36,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:36,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:26:36,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:36,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:26:36,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:36,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:26:36,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:36,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:26:36,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:36,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:26:36,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:36,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:26:36,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:36,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:26:36,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:36,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:26:36,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:36,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:26:36,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:36,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:26:36,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:36,644 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-21 02:26:36,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:26:36,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615990633] [2023-12-21 02:26:36,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615990633] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:26:36,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:26:36,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 02:26:36,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518139834] [2023-12-21 02:26:36,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:26:36,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 02:26:36,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:26:36,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 02:26:36,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 02:26:36,646 INFO L87 Difference]: Start difference. First operand 410 states and 528 transitions. Second operand has 7 states, 5 states have (on average 9.4) internal successors, (47), 7 states have internal predecessors, (47), 3 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-21 02:26:36,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:26:36,908 INFO L93 Difference]: Finished difference Result 728 states and 930 transitions. [2023-12-21 02:26:36,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 02:26:36,908 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 9.4) internal successors, (47), 7 states have internal predecessors, (47), 3 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 3 states have call successors, (14) Word has length 114 [2023-12-21 02:26:36,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:26:36,910 INFO L225 Difference]: With dead ends: 728 [2023-12-21 02:26:36,910 INFO L226 Difference]: Without dead ends: 490 [2023-12-21 02:26:36,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-21 02:26:36,911 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 71 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 02:26:36,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 432 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 02:26:36,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2023-12-21 02:26:36,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 468. [2023-12-21 02:26:36,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 402 states have (on average 1.2238805970149254) internal successors, (492), 406 states have internal predecessors, (492), 50 states have call successors, (50), 15 states have call predecessors, (50), 15 states have return successors, (50), 46 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-21 02:26:36,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 592 transitions. [2023-12-21 02:26:36,973 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 592 transitions. Word has length 114 [2023-12-21 02:26:36,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:26:36,974 INFO L495 AbstractCegarLoop]: Abstraction has 468 states and 592 transitions. [2023-12-21 02:26:36,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 9.4) internal successors, (47), 7 states have internal predecessors, (47), 3 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-21 02:26:36,974 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 592 transitions. [2023-12-21 02:26:36,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-21 02:26:36,974 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:26:36,974 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:26:36,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-21 02:26:36,975 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:26:36,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:26:36,975 INFO L85 PathProgramCache]: Analyzing trace with hash -258381462, now seen corresponding path program 1 times [2023-12-21 02:26:36,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:26:36,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558577098] [2023-12-21 02:26:36,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:26:36,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:26:36,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:37,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:26:37,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:37,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:26:37,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:37,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:26:37,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:37,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:26:37,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:37,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:26:37,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:37,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:26:37,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:37,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:26:37,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:37,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:26:37,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:37,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:26:37,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:37,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:26:37,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:37,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:26:37,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:37,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:26:37,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:37,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:26:37,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:37,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:26:37,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:37,023 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-21 02:26:37,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:26:37,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558577098] [2023-12-21 02:26:37,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558577098] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:26:37,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:26:37,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 02:26:37,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133249653] [2023-12-21 02:26:37,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:26:37,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 02:26:37,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:26:37,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 02:26:37,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 02:26:37,025 INFO L87 Difference]: Start difference. First operand 468 states and 592 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-21 02:26:37,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:26:37,093 INFO L93 Difference]: Finished difference Result 946 states and 1194 transitions. [2023-12-21 02:26:37,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 02:26:37,094 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 114 [2023-12-21 02:26:37,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:26:37,095 INFO L225 Difference]: With dead ends: 946 [2023-12-21 02:26:37,096 INFO L226 Difference]: Without dead ends: 523 [2023-12-21 02:26:37,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 02:26:37,097 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 9 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 02:26:37,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 214 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 02:26:37,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2023-12-21 02:26:37,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 473. [2023-12-21 02:26:37,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 407 states have (on average 1.221130221130221) internal successors, (497), 411 states have internal predecessors, (497), 50 states have call successors, (50), 15 states have call predecessors, (50), 15 states have return successors, (50), 46 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-21 02:26:37,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 597 transitions. [2023-12-21 02:26:37,152 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 597 transitions. Word has length 114 [2023-12-21 02:26:37,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:26:37,152 INFO L495 AbstractCegarLoop]: Abstraction has 473 states and 597 transitions. [2023-12-21 02:26:37,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-21 02:26:37,152 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 597 transitions. [2023-12-21 02:26:37,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-21 02:26:37,153 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:26:37,153 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:26:37,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-21 02:26:37,153 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:26:37,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:26:37,154 INFO L85 PathProgramCache]: Analyzing trace with hash 134645548, now seen corresponding path program 1 times [2023-12-21 02:26:37,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:26:37,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851927654] [2023-12-21 02:26:37,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:26:37,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:26:37,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:37,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:26:37,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:37,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:26:37,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:37,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:26:37,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:37,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:26:37,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:37,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:26:37,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:37,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:26:37,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:37,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:26:37,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:37,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:26:37,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:37,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:26:37,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:37,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:26:37,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:37,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:26:37,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:37,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:26:37,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:37,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:26:37,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:37,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:26:37,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:37,491 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-21 02:26:37,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:26:37,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851927654] [2023-12-21 02:26:37,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851927654] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:26:37,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:26:37,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 02:26:37,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278211932] [2023-12-21 02:26:37,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:26:37,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 02:26:37,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:26:37,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 02:26:37,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 02:26:37,492 INFO L87 Difference]: Start difference. First operand 473 states and 597 transitions. Second operand has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 02:26:37,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:26:37,718 INFO L93 Difference]: Finished difference Result 951 states and 1193 transitions. [2023-12-21 02:26:37,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 02:26:37,718 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) Word has length 114 [2023-12-21 02:26:37,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:26:37,720 INFO L225 Difference]: With dead ends: 951 [2023-12-21 02:26:37,720 INFO L226 Difference]: Without dead ends: 523 [2023-12-21 02:26:37,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 02:26:37,721 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 132 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 02:26:37,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 284 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 02:26:37,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2023-12-21 02:26:37,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 470. [2023-12-21 02:26:37,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 404 states have (on average 1.2153465346534653) internal successors, (491), 408 states have internal predecessors, (491), 50 states have call successors, (50), 15 states have call predecessors, (50), 15 states have return successors, (50), 46 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-21 02:26:37,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 591 transitions. [2023-12-21 02:26:37,775 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 591 transitions. Word has length 114 [2023-12-21 02:26:37,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:26:37,775 INFO L495 AbstractCegarLoop]: Abstraction has 470 states and 591 transitions. [2023-12-21 02:26:37,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 02:26:37,775 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 591 transitions. [2023-12-21 02:26:37,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-21 02:26:37,776 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:26:37,776 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:26:37,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-21 02:26:37,776 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:26:37,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:26:37,777 INFO L85 PathProgramCache]: Analyzing trace with hash 442683116, now seen corresponding path program 1 times [2023-12-21 02:26:37,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:26:37,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168699886] [2023-12-21 02:26:37,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:26:37,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:26:37,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:38,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:26:38,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:38,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:26:38,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:38,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:26:38,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:38,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:26:38,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:38,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:26:38,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:38,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:26:38,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:38,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:26:38,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:38,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:26:38,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:38,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:26:38,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:38,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:26:38,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:38,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:26:38,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:38,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:26:38,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:38,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:26:38,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:38,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:26:38,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:38,053 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-21 02:26:38,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:26:38,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168699886] [2023-12-21 02:26:38,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168699886] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:26:38,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:26:38,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 02:26:38,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325530588] [2023-12-21 02:26:38,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:26:38,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 02:26:38,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:26:38,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 02:26:38,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-21 02:26:38,055 INFO L87 Difference]: Start difference. First operand 470 states and 591 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-21 02:26:38,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:26:38,475 INFO L93 Difference]: Finished difference Result 1113 states and 1385 transitions. [2023-12-21 02:26:38,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 02:26:38,476 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 114 [2023-12-21 02:26:38,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:26:38,478 INFO L225 Difference]: With dead ends: 1113 [2023-12-21 02:26:38,478 INFO L226 Difference]: Without dead ends: 688 [2023-12-21 02:26:38,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-21 02:26:38,479 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 294 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 02:26:38,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 406 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 02:26:38,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2023-12-21 02:26:38,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 574. [2023-12-21 02:26:38,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 508 states have (on average 1.2244094488188977) internal successors, (622), 511 states have internal predecessors, (622), 50 states have call successors, (50), 15 states have call predecessors, (50), 15 states have return successors, (50), 47 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-21 02:26:38,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 722 transitions. [2023-12-21 02:26:38,540 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 722 transitions. Word has length 114 [2023-12-21 02:26:38,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:26:38,540 INFO L495 AbstractCegarLoop]: Abstraction has 574 states and 722 transitions. [2023-12-21 02:26:38,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-21 02:26:38,540 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 722 transitions. [2023-12-21 02:26:38,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-21 02:26:38,541 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:26:38,541 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:26:38,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-21 02:26:38,541 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:26:38,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:26:38,541 INFO L85 PathProgramCache]: Analyzing trace with hash 835710126, now seen corresponding path program 1 times [2023-12-21 02:26:38,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:26:38,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214258720] [2023-12-21 02:26:38,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:26:38,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:26:38,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:38,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:26:38,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:38,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:26:38,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:38,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:26:38,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:38,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:26:38,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:38,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:26:38,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:38,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:26:38,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:38,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:26:38,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:38,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:26:38,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:38,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:26:38,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:38,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:26:38,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:38,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:26:38,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:38,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:26:38,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:38,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:26:38,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:38,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:26:38,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:38,996 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-21 02:26:38,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:26:38,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214258720] [2023-12-21 02:26:38,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214258720] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:26:38,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:26:38,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 02:26:38,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821964031] [2023-12-21 02:26:38,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:26:38,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 02:26:38,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:26:38,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 02:26:38,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-21 02:26:38,998 INFO L87 Difference]: Start difference. First operand 574 states and 722 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-21 02:26:39,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:26:39,476 INFO L93 Difference]: Finished difference Result 1109 states and 1385 transitions. [2023-12-21 02:26:39,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 02:26:39,478 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 114 [2023-12-21 02:26:39,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:26:39,480 INFO L225 Difference]: With dead ends: 1109 [2023-12-21 02:26:39,480 INFO L226 Difference]: Without dead ends: 684 [2023-12-21 02:26:39,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-21 02:26:39,481 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 158 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 02:26:39,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 649 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 02:26:39,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2023-12-21 02:26:39,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 602. [2023-12-21 02:26:39,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 536 states have (on average 1.2145522388059702) internal successors, (651), 539 states have internal predecessors, (651), 50 states have call successors, (50), 15 states have call predecessors, (50), 15 states have return successors, (50), 47 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-21 02:26:39,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 751 transitions. [2023-12-21 02:26:39,540 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 751 transitions. Word has length 114 [2023-12-21 02:26:39,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:26:39,541 INFO L495 AbstractCegarLoop]: Abstraction has 602 states and 751 transitions. [2023-12-21 02:26:39,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-21 02:26:39,541 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 751 transitions. [2023-12-21 02:26:39,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-21 02:26:39,542 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:26:39,542 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:26:39,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-21 02:26:39,542 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:26:39,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:26:39,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1054564844, now seen corresponding path program 1 times [2023-12-21 02:26:39,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:26:39,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523117442] [2023-12-21 02:26:39,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:26:39,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:26:39,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:39,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:26:39,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:39,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:26:39,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:39,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:26:39,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:39,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:26:39,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:39,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:26:39,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:39,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:26:39,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:39,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:26:39,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:39,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:26:39,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:39,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:26:39,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:39,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:26:39,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:39,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:26:39,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:39,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:26:39,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:39,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:26:39,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:39,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:26:39,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:39,736 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-21 02:26:39,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:26:39,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523117442] [2023-12-21 02:26:39,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523117442] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:26:39,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:26:39,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 02:26:39,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312469687] [2023-12-21 02:26:39,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:26:39,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 02:26:39,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:26:39,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 02:26:39,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 02:26:39,737 INFO L87 Difference]: Start difference. First operand 602 states and 751 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-21 02:26:40,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:26:40,033 INFO L93 Difference]: Finished difference Result 1129 states and 1404 transitions. [2023-12-21 02:26:40,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 02:26:40,034 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 114 [2023-12-21 02:26:40,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:26:40,036 INFO L225 Difference]: With dead ends: 1129 [2023-12-21 02:26:40,036 INFO L226 Difference]: Without dead ends: 645 [2023-12-21 02:26:40,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-21 02:26:40,051 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 145 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 02:26:40,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 300 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 02:26:40,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2023-12-21 02:26:40,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 596. [2023-12-21 02:26:40,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 530 states have (on average 1.209433962264151) internal successors, (641), 533 states have internal predecessors, (641), 50 states have call successors, (50), 15 states have call predecessors, (50), 15 states have return successors, (50), 47 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-21 02:26:40,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 741 transitions. [2023-12-21 02:26:40,113 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 741 transitions. Word has length 114 [2023-12-21 02:26:40,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:26:40,113 INFO L495 AbstractCegarLoop]: Abstraction has 596 states and 741 transitions. [2023-12-21 02:26:40,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-21 02:26:40,113 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 741 transitions. [2023-12-21 02:26:40,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-21 02:26:40,114 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:26:40,114 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:26:40,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-21 02:26:40,115 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:26:40,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:26:40,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1535602200, now seen corresponding path program 1 times [2023-12-21 02:26:40,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:26:40,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031977850] [2023-12-21 02:26:40,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:26:40,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:26:40,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:40,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:26:40,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:40,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:26:40,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:40,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:26:40,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:40,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:26:40,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:40,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:26:40,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:40,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:26:40,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:40,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:26:40,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:40,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:26:40,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:40,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:26:40,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:40,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:26:40,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:40,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:26:40,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:40,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:26:40,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:40,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:26:40,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:40,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:26:40,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:40,633 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-21 02:26:40,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:26:40,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031977850] [2023-12-21 02:26:40,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031977850] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:26:40,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:26:40,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 02:26:40,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250209638] [2023-12-21 02:26:40,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:26:40,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 02:26:40,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:26:40,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 02:26:40,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 02:26:40,635 INFO L87 Difference]: Start difference. First operand 596 states and 741 transitions. Second operand has 7 states, 5 states have (on average 9.6) internal successors, (48), 7 states have internal predecessors, (48), 3 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-21 02:26:40,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:26:40,919 INFO L93 Difference]: Finished difference Result 888 states and 1108 transitions. [2023-12-21 02:26:40,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 02:26:40,919 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 9.6) internal successors, (48), 7 states have internal predecessors, (48), 3 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 3 states have call successors, (14) Word has length 115 [2023-12-21 02:26:40,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:26:40,921 INFO L225 Difference]: With dead ends: 888 [2023-12-21 02:26:40,921 INFO L226 Difference]: Without dead ends: 594 [2023-12-21 02:26:40,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-21 02:26:40,923 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 44 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 02:26:40,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 420 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 02:26:40,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2023-12-21 02:26:40,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 522. [2023-12-21 02:26:40,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 460 states have (on average 1.208695652173913) internal successors, (556), 461 states have internal predecessors, (556), 46 states have call successors, (46), 15 states have call predecessors, (46), 15 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-21 02:26:40,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 648 transitions. [2023-12-21 02:26:40,977 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 648 transitions. Word has length 115 [2023-12-21 02:26:40,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:26:40,977 INFO L495 AbstractCegarLoop]: Abstraction has 522 states and 648 transitions. [2023-12-21 02:26:40,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 9.6) internal successors, (48), 7 states have internal predecessors, (48), 3 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-21 02:26:40,977 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 648 transitions. [2023-12-21 02:26:40,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-21 02:26:40,978 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:26:40,978 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:26:40,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-21 02:26:40,978 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:26:40,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:26:40,978 INFO L85 PathProgramCache]: Analyzing trace with hash 857282979, now seen corresponding path program 1 times [2023-12-21 02:26:40,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:26:40,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163040720] [2023-12-21 02:26:40,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:26:40,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:26:41,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:41,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:26:41,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:41,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:26:41,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:41,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:26:41,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:41,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:26:41,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:41,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:26:41,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:41,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:26:41,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:41,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:26:41,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:41,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:26:41,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:41,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:26:41,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:41,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:26:41,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:41,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:26:41,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:41,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:26:41,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:41,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:26:41,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:41,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:26:41,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:41,851 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-21 02:26:41,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:26:41,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163040720] [2023-12-21 02:26:41,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163040720] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:26:41,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:26:41,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-21 02:26:41,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401315518] [2023-12-21 02:26:41,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:26:41,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 02:26:41,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:26:41,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 02:26:41,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2023-12-21 02:26:41,855 INFO L87 Difference]: Start difference. First operand 522 states and 648 transitions. Second operand has 16 states, 14 states have (on average 3.5) internal successors, (49), 16 states have internal predecessors, (49), 3 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-21 02:26:43,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:26:43,294 INFO L93 Difference]: Finished difference Result 1170 states and 1455 transitions. [2023-12-21 02:26:43,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-21 02:26:43,295 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 3.5) internal successors, (49), 16 states have internal predecessors, (49), 3 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 3 states have call successors, (14) Word has length 116 [2023-12-21 02:26:43,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:26:43,298 INFO L225 Difference]: With dead ends: 1170 [2023-12-21 02:26:43,298 INFO L226 Difference]: Without dead ends: 920 [2023-12-21 02:26:43,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=206, Invalid=984, Unknown=0, NotChecked=0, Total=1190 [2023-12-21 02:26:43,299 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 398 mSDsluCounter, 1213 mSDsCounter, 0 mSdLazyCounter, 1420 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 1344 SdHoareTripleChecker+Invalid, 1457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 02:26:43,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 1344 Invalid, 1457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1420 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 02:26:43,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2023-12-21 02:26:43,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 721. [2023-12-21 02:26:43,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 648 states have (on average 1.2237654320987654) internal successors, (793), 650 states have internal predecessors, (793), 54 states have call successors, (54), 18 states have call predecessors, (54), 18 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-21 02:26:43,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 901 transitions. [2023-12-21 02:26:43,384 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 901 transitions. Word has length 116 [2023-12-21 02:26:43,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:26:43,384 INFO L495 AbstractCegarLoop]: Abstraction has 721 states and 901 transitions. [2023-12-21 02:26:43,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 3.5) internal successors, (49), 16 states have internal predecessors, (49), 3 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-21 02:26:43,385 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 901 transitions. [2023-12-21 02:26:43,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-21 02:26:43,385 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:26:43,385 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:26:43,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-12-21 02:26:43,386 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:26:43,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:26:43,386 INFO L85 PathProgramCache]: Analyzing trace with hash 671611120, now seen corresponding path program 1 times [2023-12-21 02:26:43,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:26:43,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056496520] [2023-12-21 02:26:43,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:26:43,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:26:43,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:43,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:26:43,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:43,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:26:43,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:43,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:26:43,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:43,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:26:43,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:43,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:26:43,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:43,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:26:43,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:43,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:26:43,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:43,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:26:43,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:43,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:26:43,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:43,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:26:43,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:43,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:26:43,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:43,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:26:43,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:43,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:26:43,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:43,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:26:43,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:43,894 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-21 02:26:43,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:26:43,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056496520] [2023-12-21 02:26:43,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056496520] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:26:43,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:26:43,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 02:26:43,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320016631] [2023-12-21 02:26:43,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:26:43,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 02:26:43,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:26:43,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 02:26:43,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 02:26:43,896 INFO L87 Difference]: Start difference. First operand 721 states and 901 transitions. Second operand has 9 states, 8 states have (on average 6.25) internal successors, (50), 9 states have internal predecessors, (50), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 02:26:44,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:26:44,477 INFO L93 Difference]: Finished difference Result 1471 states and 1841 transitions. [2023-12-21 02:26:44,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 02:26:44,478 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.25) internal successors, (50), 9 states have internal predecessors, (50), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) Word has length 117 [2023-12-21 02:26:44,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:26:44,481 INFO L225 Difference]: With dead ends: 1471 [2023-12-21 02:26:44,481 INFO L226 Difference]: Without dead ends: 1101 [2023-12-21 02:26:44,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2023-12-21 02:26:44,482 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 116 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 02:26:44,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 894 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 669 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 02:26:44,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2023-12-21 02:26:44,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 850. [2023-12-21 02:26:44,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 777 states have (on average 1.229086229086229) internal successors, (955), 779 states have internal predecessors, (955), 54 states have call successors, (54), 18 states have call predecessors, (54), 18 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-21 02:26:44,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1063 transitions. [2023-12-21 02:26:44,556 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1063 transitions. Word has length 117 [2023-12-21 02:26:44,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:26:44,556 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1063 transitions. [2023-12-21 02:26:44,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.25) internal successors, (50), 9 states have internal predecessors, (50), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 02:26:44,557 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1063 transitions. [2023-12-21 02:26:44,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-21 02:26:44,557 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:26:44,557 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:26:44,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-12-21 02:26:44,558 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:26:44,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:26:44,558 INFO L85 PathProgramCache]: Analyzing trace with hash 119339657, now seen corresponding path program 1 times [2023-12-21 02:26:44,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:26:44,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031227600] [2023-12-21 02:26:44,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:26:44,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:26:44,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:45,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:26:45,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:45,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:26:45,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:45,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:26:45,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:45,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:26:45,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:45,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:26:45,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:45,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:26:45,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:45,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:26:45,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:45,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:26:45,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:45,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:26:45,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:45,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:26:45,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:45,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:26:45,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:45,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:26:45,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:45,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:26:45,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:45,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:26:45,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:45,377 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-21 02:26:45,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:26:45,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031227600] [2023-12-21 02:26:45,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031227600] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:26:45,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:26:45,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 02:26:45,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133395017] [2023-12-21 02:26:45,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:26:45,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 02:26:45,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:26:45,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 02:26:45,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-21 02:26:45,380 INFO L87 Difference]: Start difference. First operand 850 states and 1063 transitions. Second operand has 10 states, 7 states have (on average 7.285714285714286) internal successors, (51), 10 states have internal predecessors, (51), 4 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 4 states have call successors, (14) [2023-12-21 02:26:46,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:26:46,184 INFO L93 Difference]: Finished difference Result 1627 states and 2062 transitions. [2023-12-21 02:26:46,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 02:26:46,184 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 7.285714285714286) internal successors, (51), 10 states have internal predecessors, (51), 4 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 4 states have call successors, (14) Word has length 118 [2023-12-21 02:26:46,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:26:46,187 INFO L225 Difference]: With dead ends: 1627 [2023-12-21 02:26:46,187 INFO L226 Difference]: Without dead ends: 1151 [2023-12-21 02:26:46,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-12-21 02:26:46,188 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 149 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 02:26:46,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 725 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 954 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 02:26:46,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2023-12-21 02:26:46,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 970. [2023-12-21 02:26:46,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 897 states have (on average 1.2408026755852843) internal successors, (1113), 899 states have internal predecessors, (1113), 54 states have call successors, (54), 18 states have call predecessors, (54), 18 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-21 02:26:46,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1221 transitions. [2023-12-21 02:26:46,276 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1221 transitions. Word has length 118 [2023-12-21 02:26:46,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:26:46,276 INFO L495 AbstractCegarLoop]: Abstraction has 970 states and 1221 transitions. [2023-12-21 02:26:46,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 7.285714285714286) internal successors, (51), 10 states have internal predecessors, (51), 4 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 4 states have call successors, (14) [2023-12-21 02:26:46,276 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1221 transitions. [2023-12-21 02:26:46,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-21 02:26:46,277 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:26:46,277 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:26:46,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-21 02:26:46,277 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:26:46,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:26:46,277 INFO L85 PathProgramCache]: Analyzing trace with hash -891777593, now seen corresponding path program 1 times [2023-12-21 02:26:46,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:26:46,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137162194] [2023-12-21 02:26:46,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:26:46,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:26:46,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:47,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:26:47,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:47,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:26:47,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:47,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:26:47,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:47,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:26:47,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:47,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:26:47,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:47,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:26:47,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:47,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:26:47,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:47,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:26:47,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:47,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:26:47,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:47,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:26:47,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:47,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:26:47,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:47,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:26:47,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:47,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:26:47,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:47,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:26:47,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:47,104 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-21 02:26:47,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:26:47,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137162194] [2023-12-21 02:26:47,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137162194] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:26:47,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:26:47,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-21 02:26:47,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000595722] [2023-12-21 02:26:47,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:26:47,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 02:26:47,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:26:47,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 02:26:47,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-21 02:26:47,106 INFO L87 Difference]: Start difference. First operand 970 states and 1221 transitions. Second operand has 13 states, 9 states have (on average 5.666666666666667) internal successors, (51), 13 states have internal predecessors, (51), 5 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 5 states have call successors, (14) [2023-12-21 02:26:48,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:26:48,044 INFO L93 Difference]: Finished difference Result 1715 states and 2184 transitions. [2023-12-21 02:26:48,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 02:26:48,045 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 9 states have (on average 5.666666666666667) internal successors, (51), 13 states have internal predecessors, (51), 5 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 5 states have call successors, (14) Word has length 118 [2023-12-21 02:26:48,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:26:48,047 INFO L225 Difference]: With dead ends: 1715 [2023-12-21 02:26:48,047 INFO L226 Difference]: Without dead ends: 1184 [2023-12-21 02:26:48,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2023-12-21 02:26:48,049 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 272 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 02:26:48,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 661 Invalid, 1158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 02:26:48,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2023-12-21 02:26:48,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 973. [2023-12-21 02:26:48,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 973 states, 900 states have (on average 1.238888888888889) internal successors, (1115), 902 states have internal predecessors, (1115), 54 states have call successors, (54), 18 states have call predecessors, (54), 18 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-21 02:26:48,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1223 transitions. [2023-12-21 02:26:48,122 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1223 transitions. Word has length 118 [2023-12-21 02:26:48,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:26:48,123 INFO L495 AbstractCegarLoop]: Abstraction has 973 states and 1223 transitions. [2023-12-21 02:26:48,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 9 states have (on average 5.666666666666667) internal successors, (51), 13 states have internal predecessors, (51), 5 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 5 states have call successors, (14) [2023-12-21 02:26:48,123 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1223 transitions. [2023-12-21 02:26:48,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-21 02:26:48,124 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:26:48,124 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:26:48,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-12-21 02:26:48,124 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:26:48,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:26:48,124 INFO L85 PathProgramCache]: Analyzing trace with hash 30284617, now seen corresponding path program 1 times [2023-12-21 02:26:48,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:26:48,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086506328] [2023-12-21 02:26:48,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:26:48,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:26:48,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:48,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:26:48,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:48,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:26:48,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:48,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:26:48,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:48,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:26:48,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:48,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:26:48,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:48,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:26:48,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:48,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:26:48,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:48,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:26:48,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:48,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:26:48,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:48,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:26:48,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:48,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:26:48,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:48,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:26:48,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:48,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:26:48,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:48,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:26:48,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:48,903 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-21 02:26:48,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:26:48,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086506328] [2023-12-21 02:26:48,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086506328] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:26:48,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:26:48,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 02:26:48,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999095879] [2023-12-21 02:26:48,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:26:48,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 02:26:48,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:26:48,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 02:26:48,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-21 02:26:48,909 INFO L87 Difference]: Start difference. First operand 973 states and 1223 transitions. Second operand has 10 states, 7 states have (on average 7.285714285714286) internal successors, (51), 10 states have internal predecessors, (51), 4 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 4 states have call successors, (14) [2023-12-21 02:26:49,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:26:49,593 INFO L93 Difference]: Finished difference Result 1863 states and 2365 transitions. [2023-12-21 02:26:49,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 02:26:49,597 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 7.285714285714286) internal successors, (51), 10 states have internal predecessors, (51), 4 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 4 states have call successors, (14) Word has length 118 [2023-12-21 02:26:49,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:26:49,600 INFO L225 Difference]: With dead ends: 1863 [2023-12-21 02:26:49,600 INFO L226 Difference]: Without dead ends: 1333 [2023-12-21 02:26:49,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-12-21 02:26:49,602 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 180 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 839 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 02:26:49,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 649 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 839 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 02:26:49,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1333 states. [2023-12-21 02:26:49,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1333 to 1117. [2023-12-21 02:26:49,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1117 states, 1044 states have (on average 1.2452107279693487) internal successors, (1300), 1046 states have internal predecessors, (1300), 54 states have call successors, (54), 18 states have call predecessors, (54), 18 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-21 02:26:49,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 1408 transitions. [2023-12-21 02:26:49,679 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 1408 transitions. Word has length 118 [2023-12-21 02:26:49,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:26:49,679 INFO L495 AbstractCegarLoop]: Abstraction has 1117 states and 1408 transitions. [2023-12-21 02:26:49,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 7.285714285714286) internal successors, (51), 10 states have internal predecessors, (51), 4 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 4 states have call successors, (14) [2023-12-21 02:26:49,679 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 1408 transitions. [2023-12-21 02:26:49,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-21 02:26:49,680 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:26:49,680 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:26:49,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-12-21 02:26:49,680 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:26:49,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:26:49,681 INFO L85 PathProgramCache]: Analyzing trace with hash -990783737, now seen corresponding path program 1 times [2023-12-21 02:26:49,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:26:49,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482836762] [2023-12-21 02:26:49,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:26:49,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:26:49,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:49,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:26:49,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:49,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:26:49,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:49,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:26:49,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:49,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:26:49,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:49,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:26:49,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:49,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:26:49,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:49,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:26:49,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:49,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:26:49,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:49,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:26:49,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:49,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:26:49,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:49,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:26:49,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:49,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:26:49,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:49,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:26:49,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:49,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:26:49,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:49,819 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-21 02:26:49,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:26:49,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482836762] [2023-12-21 02:26:49,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482836762] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:26:49,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:26:49,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 02:26:49,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803940002] [2023-12-21 02:26:49,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:26:49,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 02:26:49,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:26:49,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 02:26:49,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 02:26:49,821 INFO L87 Difference]: Start difference. First operand 1117 states and 1408 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-21 02:26:50,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:26:50,147 INFO L93 Difference]: Finished difference Result 2366 states and 2984 transitions. [2023-12-21 02:26:50,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 02:26:50,148 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 118 [2023-12-21 02:26:50,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:26:50,152 INFO L225 Difference]: With dead ends: 2366 [2023-12-21 02:26:50,152 INFO L226 Difference]: Without dead ends: 1764 [2023-12-21 02:26:50,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-21 02:26:50,154 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 126 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 02:26:50,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 360 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 02:26:50,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1764 states. [2023-12-21 02:26:50,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1764 to 1142. [2023-12-21 02:26:50,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1142 states, 1069 states have (on average 1.2525724976613657) internal successors, (1339), 1071 states have internal predecessors, (1339), 54 states have call successors, (54), 18 states have call predecessors, (54), 18 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-21 02:26:50,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 1447 transitions. [2023-12-21 02:26:50,235 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 1447 transitions. Word has length 118 [2023-12-21 02:26:50,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:26:50,235 INFO L495 AbstractCegarLoop]: Abstraction has 1142 states and 1447 transitions. [2023-12-21 02:26:50,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-21 02:26:50,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 1447 transitions. [2023-12-21 02:26:50,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-21 02:26:50,236 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:26:50,236 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:26:50,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-12-21 02:26:50,237 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:26:50,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:26:50,237 INFO L85 PathProgramCache]: Analyzing trace with hash -2001900987, now seen corresponding path program 1 times [2023-12-21 02:26:50,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:26:50,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854322184] [2023-12-21 02:26:50,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:26:50,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:26:50,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:50,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:26:50,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:50,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:26:50,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:50,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:26:50,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:50,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:26:50,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:50,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:26:50,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:50,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:26:50,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:50,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:26:50,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:50,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:26:50,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:50,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:26:50,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:50,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:26:50,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:50,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:26:50,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:50,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:26:50,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:50,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:26:50,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:50,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:26:50,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:50,803 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-21 02:26:50,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:26:50,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854322184] [2023-12-21 02:26:50,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854322184] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:26:50,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:26:50,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 02:26:50,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631122743] [2023-12-21 02:26:50,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:26:50,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 02:26:50,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:26:50,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 02:26:50,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-21 02:26:50,804 INFO L87 Difference]: Start difference. First operand 1142 states and 1447 transitions. Second operand has 10 states, 8 states have (on average 6.375) internal successors, (51), 10 states have internal predecessors, (51), 3 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-21 02:26:51,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:26:51,534 INFO L93 Difference]: Finished difference Result 2329 states and 2952 transitions. [2023-12-21 02:26:51,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 02:26:51,535 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 6.375) internal successors, (51), 10 states have internal predecessors, (51), 3 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 3 states have call successors, (14) Word has length 118 [2023-12-21 02:26:51,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:26:51,539 INFO L225 Difference]: With dead ends: 2329 [2023-12-21 02:26:51,539 INFO L226 Difference]: Without dead ends: 1707 [2023-12-21 02:26:51,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2023-12-21 02:26:51,541 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 306 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 782 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 02:26:51,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 575 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 782 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 02:26:51,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2023-12-21 02:26:51,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 1147. [2023-12-21 02:26:51,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1147 states, 1074 states have (on average 1.2495344506517692) internal successors, (1342), 1076 states have internal predecessors, (1342), 54 states have call successors, (54), 18 states have call predecessors, (54), 18 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-21 02:26:51,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 1450 transitions. [2023-12-21 02:26:51,624 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 1450 transitions. Word has length 118 [2023-12-21 02:26:51,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:26:51,624 INFO L495 AbstractCegarLoop]: Abstraction has 1147 states and 1450 transitions. [2023-12-21 02:26:51,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 6.375) internal successors, (51), 10 states have internal predecessors, (51), 3 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-21 02:26:51,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 1450 transitions. [2023-12-21 02:26:51,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-21 02:26:51,625 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:26:51,625 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:26:51,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-12-21 02:26:51,625 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:26:51,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:26:51,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1945019461, now seen corresponding path program 1 times [2023-12-21 02:26:51,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:26:51,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746053334] [2023-12-21 02:26:51,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:26:51,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:26:51,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:53,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:26:53,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:53,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:26:53,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:53,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:26:53,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:53,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:26:53,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:53,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:26:53,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:53,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:26:53,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:53,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:26:53,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:53,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:26:53,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:53,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:26:53,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:53,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:26:53,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:53,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:26:53,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:53,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:26:53,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:53,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:26:53,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:53,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:26:53,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:53,463 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-21 02:26:53,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:26:53,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746053334] [2023-12-21 02:26:53,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746053334] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:26:53,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:26:53,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-12-21 02:26:53,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783141417] [2023-12-21 02:26:53,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:26:53,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-21 02:26:53,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:26:53,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-21 02:26:53,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2023-12-21 02:26:53,464 INFO L87 Difference]: Start difference. First operand 1147 states and 1450 transitions. Second operand has 19 states, 15 states have (on average 3.4) internal successors, (51), 19 states have internal predecessors, (51), 5 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 5 states have call successors, (14) [2023-12-21 02:26:59,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:26:59,610 INFO L93 Difference]: Finished difference Result 2186 states and 2763 transitions. [2023-12-21 02:26:59,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-21 02:26:59,612 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 3.4) internal successors, (51), 19 states have internal predecessors, (51), 5 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 5 states have call successors, (14) Word has length 118 [2023-12-21 02:26:59,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:26:59,616 INFO L225 Difference]: With dead ends: 2186 [2023-12-21 02:26:59,616 INFO L226 Difference]: Without dead ends: 1580 [2023-12-21 02:26:59,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=327, Invalid=1743, Unknown=0, NotChecked=0, Total=2070 [2023-12-21 02:26:59,617 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 460 mSDsluCounter, 1444 mSDsCounter, 0 mSdLazyCounter, 2178 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 1562 SdHoareTripleChecker+Invalid, 2260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-21 02:26:59,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 1562 Invalid, 2260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 2178 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-21 02:26:59,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2023-12-21 02:26:59,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 1112. [2023-12-21 02:26:59,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1112 states, 1039 states have (on average 1.2502406159769008) internal successors, (1299), 1041 states have internal predecessors, (1299), 54 states have call successors, (54), 18 states have call predecessors, (54), 18 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-21 02:26:59,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 1407 transitions. [2023-12-21 02:26:59,727 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 1407 transitions. Word has length 118 [2023-12-21 02:26:59,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:26:59,727 INFO L495 AbstractCegarLoop]: Abstraction has 1112 states and 1407 transitions. [2023-12-21 02:26:59,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 3.4) internal successors, (51), 19 states have internal predecessors, (51), 5 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 5 states have call successors, (14) [2023-12-21 02:26:59,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 1407 transitions. [2023-12-21 02:26:59,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-21 02:26:59,728 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:26:59,728 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:26:59,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-12-21 02:26:59,728 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:26:59,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:26:59,728 INFO L85 PathProgramCache]: Analyzing trace with hash 141971911, now seen corresponding path program 1 times [2023-12-21 02:26:59,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:26:59,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144037780] [2023-12-21 02:26:59,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:26:59,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:26:59,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:26:59,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:26:59,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:00,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:27:00,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:00,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:27:00,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:00,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:27:00,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:00,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:27:00,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:00,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:27:00,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:00,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:27:00,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:00,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:27:00,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:00,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:27:00,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:00,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:27:00,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:00,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:27:00,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:00,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:27:00,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:00,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:27:00,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:00,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:27:00,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:00,010 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-21 02:27:00,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:27:00,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144037780] [2023-12-21 02:27:00,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144037780] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:27:00,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:27:00,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 02:27:00,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714299562] [2023-12-21 02:27:00,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:27:00,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 02:27:00,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:27:00,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 02:27:00,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 02:27:00,011 INFO L87 Difference]: Start difference. First operand 1112 states and 1407 transitions. Second operand has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 02:27:00,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:27:00,376 INFO L93 Difference]: Finished difference Result 1980 states and 2526 transitions. [2023-12-21 02:27:00,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 02:27:00,376 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) Word has length 118 [2023-12-21 02:27:00,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:27:00,379 INFO L225 Difference]: With dead ends: 1980 [2023-12-21 02:27:00,379 INFO L226 Difference]: Without dead ends: 1315 [2023-12-21 02:27:00,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-21 02:27:00,380 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 78 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 02:27:00,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 378 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 02:27:00,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2023-12-21 02:27:00,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 1112. [2023-12-21 02:27:00,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1112 states, 1039 states have (on average 1.2473532242540906) internal successors, (1296), 1041 states have internal predecessors, (1296), 54 states have call successors, (54), 18 states have call predecessors, (54), 18 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-21 02:27:00,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 1404 transitions. [2023-12-21 02:27:00,470 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 1404 transitions. Word has length 118 [2023-12-21 02:27:00,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:27:00,470 INFO L495 AbstractCegarLoop]: Abstraction has 1112 states and 1404 transitions. [2023-12-21 02:27:00,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 02:27:00,471 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 1404 transitions. [2023-12-21 02:27:00,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-21 02:27:00,471 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:27:00,471 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:27:00,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-12-21 02:27:00,472 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:27:00,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:27:00,472 INFO L85 PathProgramCache]: Analyzing trace with hash -367501179, now seen corresponding path program 1 times [2023-12-21 02:27:00,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:27:00,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111340357] [2023-12-21 02:27:00,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:27:00,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:27:00,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:01,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:27:01,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:01,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:27:01,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:01,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:27:01,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:01,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:27:01,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:01,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:27:01,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:01,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:27:01,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:01,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:27:01,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:01,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:27:01,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:01,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:27:01,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:01,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:27:01,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:01,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:27:01,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:01,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:27:01,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:01,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:27:01,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:01,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:27:01,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:01,015 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-21 02:27:01,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:27:01,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111340357] [2023-12-21 02:27:01,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111340357] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:27:01,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:27:01,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 02:27:01,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943728052] [2023-12-21 02:27:01,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:27:01,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 02:27:01,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:27:01,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 02:27:01,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-21 02:27:01,016 INFO L87 Difference]: Start difference. First operand 1112 states and 1404 transitions. Second operand has 10 states, 8 states have (on average 6.375) internal successors, (51), 10 states have internal predecessors, (51), 3 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-21 02:27:01,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:27:01,766 INFO L93 Difference]: Finished difference Result 1986 states and 2523 transitions. [2023-12-21 02:27:01,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 02:27:01,766 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 6.375) internal successors, (51), 10 states have internal predecessors, (51), 3 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 3 states have call successors, (14) Word has length 118 [2023-12-21 02:27:01,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:27:01,770 INFO L225 Difference]: With dead ends: 1986 [2023-12-21 02:27:01,770 INFO L226 Difference]: Without dead ends: 1370 [2023-12-21 02:27:01,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2023-12-21 02:27:01,771 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 202 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 02:27:01,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 531 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 861 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 02:27:01,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1370 states. [2023-12-21 02:27:01,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1370 to 1116. [2023-12-21 02:27:01,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1116 states, 1043 states have (on average 1.239693192713327) internal successors, (1293), 1045 states have internal predecessors, (1293), 54 states have call successors, (54), 18 states have call predecessors, (54), 18 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-21 02:27:01,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1116 states to 1116 states and 1401 transitions. [2023-12-21 02:27:01,881 INFO L78 Accepts]: Start accepts. Automaton has 1116 states and 1401 transitions. Word has length 118 [2023-12-21 02:27:01,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:27:01,882 INFO L495 AbstractCegarLoop]: Abstraction has 1116 states and 1401 transitions. [2023-12-21 02:27:01,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 6.375) internal successors, (51), 10 states have internal predecessors, (51), 3 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-21 02:27:01,882 INFO L276 IsEmpty]: Start isEmpty. Operand 1116 states and 1401 transitions. [2023-12-21 02:27:01,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-21 02:27:01,882 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:27:01,883 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:27:01,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-12-21 02:27:01,883 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:27:01,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:27:01,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1378618429, now seen corresponding path program 1 times [2023-12-21 02:27:01,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:27:01,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613545443] [2023-12-21 02:27:01,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:27:01,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:27:01,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:02,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:27:02,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:02,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:27:02,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:02,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:27:02,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:02,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:27:02,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:02,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:27:02,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:02,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:27:02,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:02,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:27:02,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:02,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:27:02,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:02,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:27:02,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:02,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:27:02,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:02,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:27:02,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:02,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:27:02,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:02,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:27:02,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:02,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:27:02,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:02,804 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-21 02:27:02,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:27:02,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613545443] [2023-12-21 02:27:02,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613545443] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:27:02,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:27:02,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-21 02:27:02,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836258645] [2023-12-21 02:27:02,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:27:02,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 02:27:02,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:27:02,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 02:27:02,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-12-21 02:27:02,808 INFO L87 Difference]: Start difference. First operand 1116 states and 1401 transitions. Second operand has 14 states, 10 states have (on average 5.1) internal successors, (51), 14 states have internal predecessors, (51), 5 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 5 states have call successors, (14) [2023-12-21 02:27:03,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:27:03,954 INFO L93 Difference]: Finished difference Result 1918 states and 2430 transitions. [2023-12-21 02:27:03,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 02:27:03,954 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 5.1) internal successors, (51), 14 states have internal predecessors, (51), 5 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 5 states have call successors, (14) Word has length 118 [2023-12-21 02:27:03,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:27:03,957 INFO L225 Difference]: With dead ends: 1918 [2023-12-21 02:27:03,957 INFO L226 Difference]: Without dead ends: 1321 [2023-12-21 02:27:03,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=115, Invalid=535, Unknown=0, NotChecked=0, Total=650 [2023-12-21 02:27:03,959 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 235 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 1355 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 1426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 02:27:03,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 766 Invalid, 1426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1355 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 02:27:03,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1321 states. [2023-12-21 02:27:04,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1321 to 1119. [2023-12-21 02:27:04,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 1046 states have (on average 1.2380497131931167) internal successors, (1295), 1048 states have internal predecessors, (1295), 54 states have call successors, (54), 18 states have call predecessors, (54), 18 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-21 02:27:04,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 1403 transitions. [2023-12-21 02:27:04,051 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 1403 transitions. Word has length 118 [2023-12-21 02:27:04,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:27:04,052 INFO L495 AbstractCegarLoop]: Abstraction has 1119 states and 1403 transitions. [2023-12-21 02:27:04,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 5.1) internal successors, (51), 14 states have internal predecessors, (51), 5 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 5 states have call successors, (14) [2023-12-21 02:27:04,053 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 1403 transitions. [2023-12-21 02:27:04,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-21 02:27:04,053 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:27:04,053 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:27:04,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-12-21 02:27:04,054 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:27:04,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:27:04,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1979268733, now seen corresponding path program 1 times [2023-12-21 02:27:04,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:27:04,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987150245] [2023-12-21 02:27:04,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:27:04,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:27:04,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:05,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:27:05,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:05,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:27:05,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:05,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:27:05,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:05,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:27:05,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:05,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:27:05,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:05,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:27:05,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:05,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:27:05,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:05,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:27:05,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:05,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:27:05,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:05,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:27:05,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:05,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:27:05,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:05,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:27:05,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:05,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:27:05,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:05,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:27:05,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:05,142 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-21 02:27:05,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:27:05,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987150245] [2023-12-21 02:27:05,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987150245] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:27:05,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:27:05,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-21 02:27:05,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131577342] [2023-12-21 02:27:05,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:27:05,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 02:27:05,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:27:05,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 02:27:05,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-12-21 02:27:05,143 INFO L87 Difference]: Start difference. First operand 1119 states and 1403 transitions. Second operand has 14 states, 10 states have (on average 5.1) internal successors, (51), 14 states have internal predecessors, (51), 5 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 5 states have call successors, (14) [2023-12-21 02:27:07,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:27:07,450 INFO L93 Difference]: Finished difference Result 2027 states and 2550 transitions. [2023-12-21 02:27:07,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-21 02:27:07,450 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 5.1) internal successors, (51), 14 states have internal predecessors, (51), 5 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 5 states have call successors, (14) Word has length 118 [2023-12-21 02:27:07,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:27:07,469 INFO L225 Difference]: With dead ends: 2027 [2023-12-21 02:27:07,469 INFO L226 Difference]: Without dead ends: 1428 [2023-12-21 02:27:07,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=136, Invalid=676, Unknown=0, NotChecked=0, Total=812 [2023-12-21 02:27:07,471 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 280 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 1370 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 1494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-21 02:27:07,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 857 Invalid, 1494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1370 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-21 02:27:07,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1428 states. [2023-12-21 02:27:07,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1428 to 1122. [2023-12-21 02:27:07,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1122 states, 1048 states have (on average 1.2356870229007633) internal successors, (1295), 1050 states have internal predecessors, (1295), 54 states have call successors, (54), 19 states have call predecessors, (54), 19 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-21 02:27:07,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 1403 transitions. [2023-12-21 02:27:07,579 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 1403 transitions. Word has length 118 [2023-12-21 02:27:07,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:27:07,580 INFO L495 AbstractCegarLoop]: Abstraction has 1122 states and 1403 transitions. [2023-12-21 02:27:07,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 5.1) internal successors, (51), 14 states have internal predecessors, (51), 5 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 5 states have call successors, (14) [2023-12-21 02:27:07,580 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 1403 transitions. [2023-12-21 02:27:07,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-21 02:27:07,580 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:27:07,581 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:27:07,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-12-21 02:27:07,581 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:27:07,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:27:07,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1361462839, now seen corresponding path program 1 times [2023-12-21 02:27:07,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:27:07,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561558910] [2023-12-21 02:27:07,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:27:07,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:27:07,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:08,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:27:08,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:08,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:27:08,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:08,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:27:08,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:08,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:27:08,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:08,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:27:08,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:08,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:27:08,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:08,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:27:08,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:08,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:27:08,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:08,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:27:08,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:08,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:27:08,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:08,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:27:08,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:08,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:27:08,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:08,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:27:08,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:08,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:27:08,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:08,325 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-21 02:27:08,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:27:08,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561558910] [2023-12-21 02:27:08,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561558910] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:27:08,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:27:08,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-21 02:27:08,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736447634] [2023-12-21 02:27:08,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:27:08,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 02:27:08,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:27:08,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 02:27:08,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2023-12-21 02:27:08,326 INFO L87 Difference]: Start difference. First operand 1122 states and 1403 transitions. Second operand has 14 states, 12 states have (on average 4.25) internal successors, (51), 14 states have internal predecessors, (51), 3 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-21 02:27:09,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:27:09,337 INFO L93 Difference]: Finished difference Result 1870 states and 2366 transitions. [2023-12-21 02:27:09,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-21 02:27:09,337 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 4.25) internal successors, (51), 14 states have internal predecessors, (51), 3 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 3 states have call successors, (14) Word has length 118 [2023-12-21 02:27:09,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:27:09,339 INFO L225 Difference]: With dead ends: 1870 [2023-12-21 02:27:09,339 INFO L226 Difference]: Without dead ends: 1280 [2023-12-21 02:27:09,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=140, Invalid=616, Unknown=0, NotChecked=0, Total=756 [2023-12-21 02:27:09,341 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 252 mSDsluCounter, 1157 mSDsCounter, 0 mSdLazyCounter, 1187 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 1197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 02:27:09,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 1290 Invalid, 1197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1187 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 02:27:09,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1280 states. [2023-12-21 02:27:09,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1280 to 1078. [2023-12-21 02:27:09,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1078 states, 1004 states have (on average 1.2330677290836654) internal successors, (1238), 1006 states have internal predecessors, (1238), 54 states have call successors, (54), 19 states have call predecessors, (54), 19 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-21 02:27:09,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 1346 transitions. [2023-12-21 02:27:09,432 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 1346 transitions. Word has length 118 [2023-12-21 02:27:09,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:27:09,432 INFO L495 AbstractCegarLoop]: Abstraction has 1078 states and 1346 transitions. [2023-12-21 02:27:09,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 4.25) internal successors, (51), 14 states have internal predecessors, (51), 3 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-21 02:27:09,432 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 1346 transitions. [2023-12-21 02:27:09,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-21 02:27:09,433 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:27:09,433 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:27:09,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-12-21 02:27:09,433 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:27:09,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:27:09,433 INFO L85 PathProgramCache]: Analyzing trace with hash -463643985, now seen corresponding path program 1 times [2023-12-21 02:27:09,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:27:09,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754476647] [2023-12-21 02:27:09,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:27:09,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:27:09,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:10,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:27:10,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:10,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:27:10,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:10,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:27:10,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:10,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:27:10,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:10,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:27:10,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:10,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:27:10,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:10,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:27:10,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:10,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:27:10,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:10,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:27:10,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:10,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:27:10,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:10,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:27:10,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:10,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:27:10,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:10,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:27:10,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:10,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:27:10,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:10,034 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-21 02:27:10,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:27:10,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754476647] [2023-12-21 02:27:10,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754476647] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:27:10,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:27:10,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-12-21 02:27:10,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397200187] [2023-12-21 02:27:10,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:27:10,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-21 02:27:10,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:27:10,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-21 02:27:10,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2023-12-21 02:27:10,036 INFO L87 Difference]: Start difference. First operand 1078 states and 1346 transitions. Second operand has 15 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 15 states have internal predecessors, (53), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 02:27:10,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:27:10,999 INFO L93 Difference]: Finished difference Result 2063 states and 2602 transitions. [2023-12-21 02:27:10,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-21 02:27:10,999 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 15 states have internal predecessors, (53), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) Word has length 120 [2023-12-21 02:27:10,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:27:11,001 INFO L225 Difference]: With dead ends: 2063 [2023-12-21 02:27:11,001 INFO L226 Difference]: Without dead ends: 1491 [2023-12-21 02:27:11,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=202, Invalid=854, Unknown=0, NotChecked=0, Total=1056 [2023-12-21 02:27:11,003 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 294 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 1159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 02:27:11,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 941 Invalid, 1159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1146 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 02:27:11,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1491 states. [2023-12-21 02:27:11,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1491 to 1213. [2023-12-21 02:27:11,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1213 states, 1139 states have (on average 1.2414398595259) internal successors, (1414), 1141 states have internal predecessors, (1414), 54 states have call successors, (54), 19 states have call predecessors, (54), 19 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-21 02:27:11,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1522 transitions. [2023-12-21 02:27:11,105 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1522 transitions. Word has length 120 [2023-12-21 02:27:11,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:27:11,105 INFO L495 AbstractCegarLoop]: Abstraction has 1213 states and 1522 transitions. [2023-12-21 02:27:11,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 15 states have internal predecessors, (53), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 02:27:11,105 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1522 transitions. [2023-12-21 02:27:11,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-21 02:27:11,106 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:27:11,106 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:27:11,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-12-21 02:27:11,106 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:27:11,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:27:11,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1474761235, now seen corresponding path program 1 times [2023-12-21 02:27:11,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:27:11,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322074042] [2023-12-21 02:27:11,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:27:11,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:27:11,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:11,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:27:11,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:11,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:27:11,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:11,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:27:11,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:11,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:27:11,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:11,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:27:11,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:11,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:27:11,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:11,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:27:11,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:11,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:27:11,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:11,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:27:11,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:11,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:27:11,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:11,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:27:11,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:11,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:27:11,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:11,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:27:11,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:11,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:27:11,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:11,230 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-21 02:27:11,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:27:11,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322074042] [2023-12-21 02:27:11,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322074042] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:27:11,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:27:11,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 02:27:11,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349295396] [2023-12-21 02:27:11,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:27:11,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 02:27:11,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:27:11,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 02:27:11,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 02:27:11,231 INFO L87 Difference]: Start difference. First operand 1213 states and 1522 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-21 02:27:11,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:27:11,517 INFO L93 Difference]: Finished difference Result 2325 states and 2919 transitions. [2023-12-21 02:27:11,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 02:27:11,517 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 120 [2023-12-21 02:27:11,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:27:11,520 INFO L225 Difference]: With dead ends: 2325 [2023-12-21 02:27:11,520 INFO L226 Difference]: Without dead ends: 1680 [2023-12-21 02:27:11,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 02:27:11,521 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 122 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 02:27:11,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 386 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 02:27:11,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1680 states. [2023-12-21 02:27:11,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1680 to 1213. [2023-12-21 02:27:11,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1213 states, 1139 states have (on average 1.2291483757682178) internal successors, (1400), 1141 states have internal predecessors, (1400), 54 states have call successors, (54), 19 states have call predecessors, (54), 19 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-21 02:27:11,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1508 transitions. [2023-12-21 02:27:11,618 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1508 transitions. Word has length 120 [2023-12-21 02:27:11,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:27:11,619 INFO L495 AbstractCegarLoop]: Abstraction has 1213 states and 1508 transitions. [2023-12-21 02:27:11,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-21 02:27:11,619 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1508 transitions. [2023-12-21 02:27:11,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-21 02:27:11,619 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:27:11,619 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:27:11,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-12-21 02:27:11,620 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:27:11,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:27:11,620 INFO L85 PathProgramCache]: Analyzing trace with hash -441011731, now seen corresponding path program 1 times [2023-12-21 02:27:11,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:27:11,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368154817] [2023-12-21 02:27:11,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:27:11,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:27:11,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:12,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:27:12,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:12,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:27:12,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:12,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:27:12,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:12,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:27:12,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:12,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:27:12,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:12,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:27:12,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:12,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:27:12,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:12,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:27:12,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:12,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:27:12,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:12,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:27:12,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:12,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:27:12,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:12,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:27:12,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:12,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:27:12,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:12,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:27:12,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:12,412 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-21 02:27:12,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:27:12,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368154817] [2023-12-21 02:27:12,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368154817] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:27:12,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:27:12,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-21 02:27:12,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831615939] [2023-12-21 02:27:12,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:27:12,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 02:27:12,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:27:12,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 02:27:12,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-12-21 02:27:12,413 INFO L87 Difference]: Start difference. First operand 1213 states and 1508 transitions. Second operand has 14 states, 12 states have (on average 4.416666666666667) internal successors, (53), 14 states have internal predecessors, (53), 3 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-21 02:27:13,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:27:13,706 INFO L93 Difference]: Finished difference Result 2000 states and 2505 transitions. [2023-12-21 02:27:13,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-21 02:27:13,706 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 4.416666666666667) internal successors, (53), 14 states have internal predecessors, (53), 3 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 3 states have call successors, (14) Word has length 120 [2023-12-21 02:27:13,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:27:13,708 INFO L225 Difference]: With dead ends: 2000 [2023-12-21 02:27:13,708 INFO L226 Difference]: Without dead ends: 1342 [2023-12-21 02:27:13,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=192, Invalid=800, Unknown=0, NotChecked=0, Total=992 [2023-12-21 02:27:13,709 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 322 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 1419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 02:27:13,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 679 Invalid, 1419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 1190 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 02:27:13,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1342 states. [2023-12-21 02:27:13,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1342 to 1192. [2023-12-21 02:27:13,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1192 states, 1118 states have (on average 1.2262969588550985) internal successors, (1371), 1120 states have internal predecessors, (1371), 54 states have call successors, (54), 19 states have call predecessors, (54), 19 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-21 02:27:13,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 1479 transitions. [2023-12-21 02:27:13,803 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 1479 transitions. Word has length 120 [2023-12-21 02:27:13,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:27:13,803 INFO L495 AbstractCegarLoop]: Abstraction has 1192 states and 1479 transitions. [2023-12-21 02:27:13,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 4.416666666666667) internal successors, (53), 14 states have internal predecessors, (53), 3 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-21 02:27:13,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 1479 transitions. [2023-12-21 02:27:13,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-21 02:27:13,804 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:27:13,804 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:27:13,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-12-21 02:27:13,804 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:27:13,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:27:13,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1982089979, now seen corresponding path program 1 times [2023-12-21 02:27:13,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:27:13,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195840194] [2023-12-21 02:27:13,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:27:13,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:27:13,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:14,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:27:14,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:14,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:27:14,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:14,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:27:14,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:14,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:27:14,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:14,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:27:14,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:14,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:27:14,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:14,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:27:14,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:14,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:27:14,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:14,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:27:14,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:14,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:27:14,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:14,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:27:14,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:14,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:27:14,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:14,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:27:14,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:14,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:27:14,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:14,115 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-21 02:27:14,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:27:14,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195840194] [2023-12-21 02:27:14,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195840194] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:27:14,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:27:14,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 02:27:14,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230269670] [2023-12-21 02:27:14,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:27:14,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 02:27:14,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:27:14,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 02:27:14,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 02:27:14,116 INFO L87 Difference]: Start difference. First operand 1192 states and 1479 transitions. Second operand has 6 states, 5 states have (on average 11.0) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 02:27:14,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:27:14,480 INFO L93 Difference]: Finished difference Result 1988 states and 2483 transitions. [2023-12-21 02:27:14,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 02:27:14,481 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.0) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) Word has length 122 [2023-12-21 02:27:14,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:27:14,482 INFO L225 Difference]: With dead ends: 1988 [2023-12-21 02:27:14,482 INFO L226 Difference]: Without dead ends: 1285 [2023-12-21 02:27:14,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-21 02:27:14,484 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 82 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 02:27:14,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 455 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 02:27:14,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1285 states. [2023-12-21 02:27:14,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1285 to 1084. [2023-12-21 02:27:14,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1084 states, 1010 states have (on average 1.2207920792079208) internal successors, (1233), 1012 states have internal predecessors, (1233), 54 states have call successors, (54), 19 states have call predecessors, (54), 19 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-21 02:27:14,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1084 states to 1084 states and 1341 transitions. [2023-12-21 02:27:14,581 INFO L78 Accepts]: Start accepts. Automaton has 1084 states and 1341 transitions. Word has length 122 [2023-12-21 02:27:14,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:27:14,581 INFO L495 AbstractCegarLoop]: Abstraction has 1084 states and 1341 transitions. [2023-12-21 02:27:14,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.0) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 02:27:14,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1084 states and 1341 transitions. [2023-12-21 02:27:14,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-21 02:27:14,582 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:27:14,582 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:27:14,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-12-21 02:27:14,582 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:27:14,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:27:14,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1963291585, now seen corresponding path program 1 times [2023-12-21 02:27:14,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:27:14,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149404627] [2023-12-21 02:27:14,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:27:14,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:27:14,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:15,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:27:15,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:15,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:27:15,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:15,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:27:15,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:15,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:27:15,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:15,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:27:15,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:15,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:27:15,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:15,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:27:15,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:15,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:27:15,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:15,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:27:15,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:15,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:27:15,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:15,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:27:15,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:15,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:27:15,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:15,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:27:15,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:15,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:27:15,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:15,374 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-21 02:27:15,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:27:15,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149404627] [2023-12-21 02:27:15,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149404627] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:27:15,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:27:15,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-12-21 02:27:15,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278186949] [2023-12-21 02:27:15,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:27:15,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-21 02:27:15,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:27:15,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-21 02:27:15,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2023-12-21 02:27:15,376 INFO L87 Difference]: Start difference. First operand 1084 states and 1341 transitions. Second operand has 20 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 20 states have internal predecessors, (55), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 02:27:16,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:27:16,737 INFO L93 Difference]: Finished difference Result 1977 states and 2445 transitions. [2023-12-21 02:27:16,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-21 02:27:16,737 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 20 states have internal predecessors, (55), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) Word has length 122 [2023-12-21 02:27:16,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:27:16,739 INFO L225 Difference]: With dead ends: 1977 [2023-12-21 02:27:16,739 INFO L226 Difference]: Without dead ends: 1345 [2023-12-21 02:27:16,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=299, Invalid=1593, Unknown=0, NotChecked=0, Total=1892 [2023-12-21 02:27:16,740 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 458 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 1859 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 1142 SdHoareTripleChecker+Invalid, 1940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 02:27:16,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [458 Valid, 1142 Invalid, 1940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1859 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 02:27:16,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1345 states. [2023-12-21 02:27:16,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1345 to 1065. [2023-12-21 02:27:16,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 991 states have (on average 1.218970736629667) internal successors, (1208), 993 states have internal predecessors, (1208), 54 states have call successors, (54), 19 states have call predecessors, (54), 19 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-21 02:27:16,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1316 transitions. [2023-12-21 02:27:16,837 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1316 transitions. Word has length 122 [2023-12-21 02:27:16,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:27:16,837 INFO L495 AbstractCegarLoop]: Abstraction has 1065 states and 1316 transitions. [2023-12-21 02:27:16,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 20 states have internal predecessors, (55), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 02:27:16,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1316 transitions. [2023-12-21 02:27:16,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2023-12-21 02:27:16,839 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:27:16,840 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:27:16,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-12-21 02:27:16,840 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:27:16,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:27:16,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1057653544, now seen corresponding path program 1 times [2023-12-21 02:27:16,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:27:16,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092907921] [2023-12-21 02:27:16,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:27:16,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:27:16,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:17,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:27:17,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:17,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:27:17,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:17,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:27:17,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:17,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:27:17,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:17,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:27:17,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:17,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:27:17,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:17,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:27:17,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:17,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:27:17,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:17,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:27:17,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:17,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:27:17,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:17,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:27:17,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:17,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:27:17,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:17,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:27:17,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:17,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:27:17,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:17,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 02:27:17,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:17,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-21 02:27:17,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:17,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-21 02:27:17,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:17,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-21 02:27:17,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:17,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-21 02:27:17,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:17,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-12-21 02:27:17,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:17,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-21 02:27:17,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:17,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-21 02:27:17,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:17,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-21 02:27:17,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:17,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-12-21 02:27:17,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:17,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-12-21 02:27:17,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:17,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-12-21 02:27:17,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:17,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2023-12-21 02:27:17,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:17,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2023-12-21 02:27:17,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:17,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1563 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 1540 trivial. 0 not checked. [2023-12-21 02:27:17,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:27:17,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092907921] [2023-12-21 02:27:17,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092907921] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:27:17,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:27:17,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 02:27:17,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158326769] [2023-12-21 02:27:17,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:27:17,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 02:27:17,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:27:17,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 02:27:17,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 02:27:17,231 INFO L87 Difference]: Start difference. First operand 1065 states and 1316 transitions. Second operand has 6 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-21 02:27:17,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:27:17,478 INFO L93 Difference]: Finished difference Result 1677 states and 2094 transitions. [2023-12-21 02:27:17,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 02:27:17,479 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 220 [2023-12-21 02:27:17,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:27:17,480 INFO L225 Difference]: With dead ends: 1677 [2023-12-21 02:27:17,480 INFO L226 Difference]: Without dead ends: 1090 [2023-12-21 02:27:17,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-21 02:27:17,485 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 60 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 02:27:17,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 372 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 02:27:17,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2023-12-21 02:27:17,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 1024. [2023-12-21 02:27:17,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1024 states, 950 states have (on average 1.2094736842105263) internal successors, (1149), 952 states have internal predecessors, (1149), 54 states have call successors, (54), 19 states have call predecessors, (54), 19 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-21 02:27:17,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1257 transitions. [2023-12-21 02:27:17,581 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1257 transitions. Word has length 220 [2023-12-21 02:27:17,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:27:17,581 INFO L495 AbstractCegarLoop]: Abstraction has 1024 states and 1257 transitions. [2023-12-21 02:27:17,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-21 02:27:17,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1257 transitions. [2023-12-21 02:27:17,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2023-12-21 02:27:17,583 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:27:17,583 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:27:17,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2023-12-21 02:27:17,583 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:27:17,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:27:17,584 INFO L85 PathProgramCache]: Analyzing trace with hash -2123102284, now seen corresponding path program 1 times [2023-12-21 02:27:17,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:27:17,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511310594] [2023-12-21 02:27:17,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:27:17,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:27:17,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:18,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:27:18,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:18,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:27:18,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:18,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:27:18,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:18,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:27:18,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:18,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:27:18,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:18,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:27:18,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:18,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:27:18,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:18,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:27:18,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:18,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:27:18,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:18,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:27:18,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:18,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:27:18,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:18,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:27:18,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:18,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:27:18,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:18,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:27:18,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:18,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 02:27:18,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:18,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-21 02:27:18,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:18,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-21 02:27:18,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:18,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-21 02:27:18,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:18,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-21 02:27:18,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:18,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-12-21 02:27:18,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:18,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-21 02:27:18,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:18,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-21 02:27:18,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:18,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-21 02:27:18,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:18,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-12-21 02:27:18,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:18,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-12-21 02:27:18,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:18,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-12-21 02:27:18,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:18,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2023-12-21 02:27:18,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:18,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2023-12-21 02:27:18,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:18,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 43 proven. 9 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-12-21 02:27:18,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:27:18,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511310594] [2023-12-21 02:27:18,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511310594] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 02:27:18,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885832428] [2023-12-21 02:27:18,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:27:18,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:27:18,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:27:18,959 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 02:27:18,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 02:27:19,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:19,206 INFO L262 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 02:27:19,225 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:27:19,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-21 02:27:19,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 1551 trivial. 0 not checked. [2023-12-21 02:27:19,348 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:27:19,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885832428] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:27:19,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 02:27:19,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 16 [2023-12-21 02:27:19,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595039439] [2023-12-21 02:27:19,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:27:19,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 02:27:19,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:27:19,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 02:27:19,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-12-21 02:27:19,350 INFO L87 Difference]: Start difference. First operand 1024 states and 1257 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-21 02:27:19,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:27:19,585 INFO L93 Difference]: Finished difference Result 1687 states and 2107 transitions. [2023-12-21 02:27:19,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 02:27:19,586 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 224 [2023-12-21 02:27:19,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:27:19,588 INFO L225 Difference]: With dead ends: 1687 [2023-12-21 02:27:19,588 INFO L226 Difference]: Without dead ends: 1141 [2023-12-21 02:27:19,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 292 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2023-12-21 02:27:19,591 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 68 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 02:27:19,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 313 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 02:27:19,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1141 states. [2023-12-21 02:27:19,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1141 to 1021. [2023-12-21 02:27:19,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1021 states, 947 states have (on average 1.2101372756071807) internal successors, (1146), 949 states have internal predecessors, (1146), 54 states have call successors, (54), 19 states have call predecessors, (54), 19 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-21 02:27:19,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1021 states to 1021 states and 1254 transitions. [2023-12-21 02:27:19,691 INFO L78 Accepts]: Start accepts. Automaton has 1021 states and 1254 transitions. Word has length 224 [2023-12-21 02:27:19,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:27:19,691 INFO L495 AbstractCegarLoop]: Abstraction has 1021 states and 1254 transitions. [2023-12-21 02:27:19,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-21 02:27:19,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1021 states and 1254 transitions. [2023-12-21 02:27:19,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2023-12-21 02:27:19,693 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:27:19,693 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:27:19,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-21 02:27:19,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:27:19,901 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:27:19,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:27:19,902 INFO L85 PathProgramCache]: Analyzing trace with hash 583517110, now seen corresponding path program 1 times [2023-12-21 02:27:19,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:27:19,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428321848] [2023-12-21 02:27:19,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:27:19,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:27:19,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:20,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:27:20,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:20,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:27:20,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:20,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:27:20,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:20,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:27:20,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:20,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:27:20,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:20,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:27:20,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:20,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:27:20,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:20,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:27:20,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:20,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:27:20,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:20,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:27:20,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:20,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:27:20,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:20,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:27:20,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:20,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:27:20,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:20,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:27:20,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:20,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 02:27:20,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:20,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-21 02:27:20,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:20,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-21 02:27:20,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:20,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-21 02:27:20,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:20,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-21 02:27:20,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:20,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-12-21 02:27:20,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:20,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-21 02:27:20,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:20,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-21 02:27:20,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:20,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-21 02:27:20,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:20,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-12-21 02:27:20,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:20,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-12-21 02:27:20,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:20,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-12-21 02:27:20,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:20,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2023-12-21 02:27:20,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:20,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2023-12-21 02:27:20,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:20,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 1540 trivial. 0 not checked. [2023-12-21 02:27:20,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:27:20,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428321848] [2023-12-21 02:27:20,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428321848] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:27:20,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:27:20,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 02:27:20,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508328637] [2023-12-21 02:27:20,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:27:20,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 02:27:20,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:27:20,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 02:27:20,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 02:27:20,467 INFO L87 Difference]: Start difference. First operand 1021 states and 1254 transitions. Second operand has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 7 states have internal predecessors, (74), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-21 02:27:20,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:27:20,789 INFO L93 Difference]: Finished difference Result 1735 states and 2143 transitions. [2023-12-21 02:27:20,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 02:27:20,789 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 7 states have internal predecessors, (74), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 224 [2023-12-21 02:27:20,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:27:20,791 INFO L225 Difference]: With dead ends: 1735 [2023-12-21 02:27:20,791 INFO L226 Difference]: Without dead ends: 1186 [2023-12-21 02:27:20,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-21 02:27:20,792 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 102 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 02:27:20,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 416 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 02:27:20,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2023-12-21 02:27:20,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 1012. [2023-12-21 02:27:20,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1012 states, 938 states have (on average 1.2025586353944564) internal successors, (1128), 940 states have internal predecessors, (1128), 54 states have call successors, (54), 19 states have call predecessors, (54), 19 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-21 02:27:20,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1012 states to 1012 states and 1236 transitions. [2023-12-21 02:27:20,891 INFO L78 Accepts]: Start accepts. Automaton has 1012 states and 1236 transitions. Word has length 224 [2023-12-21 02:27:20,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:27:20,891 INFO L495 AbstractCegarLoop]: Abstraction has 1012 states and 1236 transitions. [2023-12-21 02:27:20,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 7 states have internal predecessors, (74), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-21 02:27:20,891 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states and 1236 transitions. [2023-12-21 02:27:20,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2023-12-21 02:27:20,893 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:27:20,893 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:27:20,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-12-21 02:27:20,893 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:27:20,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:27:20,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1752524950, now seen corresponding path program 1 times [2023-12-21 02:27:20,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:27:20,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902321184] [2023-12-21 02:27:20,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:27:20,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:27:21,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:21,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:27:21,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:21,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:27:21,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:21,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:27:21,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:21,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:27:21,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:21,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:27:21,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:21,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:27:21,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:21,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:27:21,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:21,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:27:21,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:21,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:27:21,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:21,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:27:21,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:21,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:27:21,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:21,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:27:21,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:21,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:27:21,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:21,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:27:21,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:21,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 02:27:21,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:21,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-21 02:27:21,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:21,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-21 02:27:21,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:21,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-21 02:27:21,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:21,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-21 02:27:21,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:21,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-12-21 02:27:21,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:21,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-21 02:27:21,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:21,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-21 02:27:21,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:21,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-21 02:27:21,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:21,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-12-21 02:27:21,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:21,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-12-21 02:27:21,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:21,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-12-21 02:27:21,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:21,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2023-12-21 02:27:21,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:21,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2023-12-21 02:27:21,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:21,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 45 proven. 7 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-12-21 02:27:21,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:27:21,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902321184] [2023-12-21 02:27:21,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902321184] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 02:27:21,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740637466] [2023-12-21 02:27:21,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:27:21,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:27:21,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:27:21,891 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 02:27:21,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 02:27:22,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:22,134 INFO L262 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-21 02:27:22,144 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:27:22,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 39 [2023-12-21 02:27:22,232 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:27:22,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 65 treesize of output 52 [2023-12-21 02:27:22,263 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:27:22,264 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 84 treesize of output 86 [2023-12-21 02:27:22,314 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:27:22,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 103 treesize of output 102 [2023-12-21 02:27:22,441 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:27:22,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 133 treesize of output 57 [2023-12-21 02:27:22,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 1541 trivial. 0 not checked. [2023-12-21 02:27:22,447 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:27:22,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740637466] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:27:22,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 02:27:22,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 14 [2023-12-21 02:27:22,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597657406] [2023-12-21 02:27:22,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:27:22,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 02:27:22,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:27:22,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 02:27:22,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-12-21 02:27:22,449 INFO L87 Difference]: Start difference. First operand 1012 states and 1236 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-21 02:27:23,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:27:23,110 INFO L93 Difference]: Finished difference Result 2115 states and 2595 transitions. [2023-12-21 02:27:23,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 02:27:23,111 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 224 [2023-12-21 02:27:23,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:27:23,113 INFO L225 Difference]: With dead ends: 2115 [2023-12-21 02:27:23,113 INFO L226 Difference]: Without dead ends: 1575 [2023-12-21 02:27:23,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 295 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2023-12-21 02:27:23,114 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 171 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 02:27:23,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 482 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 02:27:23,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1575 states. [2023-12-21 02:27:23,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1575 to 1000. [2023-12-21 02:27:23,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1000 states, 926 states have (on average 1.1922246220302375) internal successors, (1104), 928 states have internal predecessors, (1104), 54 states have call successors, (54), 19 states have call predecessors, (54), 19 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-21 02:27:23,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1212 transitions. [2023-12-21 02:27:23,212 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1212 transitions. Word has length 224 [2023-12-21 02:27:23,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:27:23,213 INFO L495 AbstractCegarLoop]: Abstraction has 1000 states and 1212 transitions. [2023-12-21 02:27:23,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-21 02:27:23,213 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1212 transitions. [2023-12-21 02:27:23,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2023-12-21 02:27:23,214 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:27:23,214 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:27:23,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-21 02:27:23,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2023-12-21 02:27:23,422 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:27:23,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:27:23,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1531325096, now seen corresponding path program 1 times [2023-12-21 02:27:23,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:27:23,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126269453] [2023-12-21 02:27:23,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:27:23,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:27:23,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:24,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:27:24,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:24,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:27:24,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:24,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:27:24,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:24,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:27:24,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:24,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:27:24,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:24,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:27:24,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:24,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:27:24,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:24,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:27:24,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:24,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:27:24,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:24,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:27:24,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:24,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:27:24,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:24,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:27:24,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:24,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:27:24,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:24,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:27:24,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:24,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 02:27:24,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:24,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-21 02:27:24,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:24,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-21 02:27:24,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:24,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-21 02:27:24,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:24,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-21 02:27:24,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:24,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-12-21 02:27:24,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:24,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-21 02:27:24,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:24,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-21 02:27:24,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:24,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-21 02:27:24,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:24,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-12-21 02:27:24,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:24,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-12-21 02:27:24,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:24,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-12-21 02:27:24,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:24,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2023-12-21 02:27:24,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:24,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2023-12-21 02:27:24,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:24,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 1539 trivial. 0 not checked. [2023-12-21 02:27:24,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:27:24,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126269453] [2023-12-21 02:27:24,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126269453] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 02:27:24,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031132680] [2023-12-21 02:27:24,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:27:24,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:27:24,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:27:24,509 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 02:27:24,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 02:27:24,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:24,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-21 02:27:24,738 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:27:24,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 28 [2023-12-21 02:27:24,777 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:27:24,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 62 [2023-12-21 02:27:24,809 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:27:24,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 88 treesize of output 78 [2023-12-21 02:27:24,944 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:27:24,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 106 treesize of output 48 [2023-12-21 02:27:24,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 1541 trivial. 0 not checked. [2023-12-21 02:27:24,959 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:27:24,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031132680] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:27:24,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 02:27:24,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 14 [2023-12-21 02:27:24,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077647772] [2023-12-21 02:27:24,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:27:24,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 02:27:24,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:27:24,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 02:27:24,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-12-21 02:27:24,961 INFO L87 Difference]: Start difference. First operand 1000 states and 1212 transitions. Second operand has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-21 02:27:25,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:27:25,462 INFO L93 Difference]: Finished difference Result 2124 states and 2573 transitions. [2023-12-21 02:27:25,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 02:27:25,462 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 224 [2023-12-21 02:27:25,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:27:25,464 INFO L225 Difference]: With dead ends: 2124 [2023-12-21 02:27:25,464 INFO L226 Difference]: Without dead ends: 1596 [2023-12-21 02:27:25,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 296 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2023-12-21 02:27:25,465 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 340 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 02:27:25,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 408 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 02:27:25,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1596 states. [2023-12-21 02:27:25,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1596 to 1020. [2023-12-21 02:27:25,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1020 states, 946 states have (on average 1.1923890063424947) internal successors, (1128), 948 states have internal predecessors, (1128), 54 states have call successors, (54), 19 states have call predecessors, (54), 19 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-21 02:27:25,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1020 states to 1020 states and 1236 transitions. [2023-12-21 02:27:25,560 INFO L78 Accepts]: Start accepts. Automaton has 1020 states and 1236 transitions. Word has length 224 [2023-12-21 02:27:25,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:27:25,560 INFO L495 AbstractCegarLoop]: Abstraction has 1020 states and 1236 transitions. [2023-12-21 02:27:25,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-21 02:27:25,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1020 states and 1236 transitions. [2023-12-21 02:27:25,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2023-12-21 02:27:25,562 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:27:25,562 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:27:25,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-21 02:27:25,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:27:25,763 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:27:25,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:27:25,763 INFO L85 PathProgramCache]: Analyzing trace with hash 365679020, now seen corresponding path program 1 times [2023-12-21 02:27:25,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:27:25,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364100302] [2023-12-21 02:27:25,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:27:25,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:27:25,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:27,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:27:27,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:27,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:27:27,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:27,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:27:27,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:27,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:27:27,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:27,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:27:27,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:27,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:27:27,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:27,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:27:27,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:27,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:27:27,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:27,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:27:27,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:27,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:27:27,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:27,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:27:27,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:27,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:27:27,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:27,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:27:27,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:27,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:27:27,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:27,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 02:27:27,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:27,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-21 02:27:27,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:27,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-21 02:27:27,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:27,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-21 02:27:27,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:27,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-21 02:27:27,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:27,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-12-21 02:27:27,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:27,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-21 02:27:27,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:27,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-21 02:27:27,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:27,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-21 02:27:27,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:27,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-12-21 02:27:27,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:27,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-12-21 02:27:27,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:27,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-12-21 02:27:27,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:27,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2023-12-21 02:27:27,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:27,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2023-12-21 02:27:27,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:27,627 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 44 proven. 8 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-12-21 02:27:27,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:27:27,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364100302] [2023-12-21 02:27:27,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364100302] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 02:27:27,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554966177] [2023-12-21 02:27:27,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:27:27,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:27:27,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:27:27,629 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 02:27:27,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 02:27:27,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:27,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-21 02:27:27,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:27:27,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2023-12-21 02:27:27,938 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:27:27,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 48 [2023-12-21 02:27:27,991 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:27:27,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 64 [2023-12-21 02:27:28,154 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:27:28,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 67 treesize of output 27 [2023-12-21 02:27:28,175 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 1541 trivial. 0 not checked. [2023-12-21 02:27:28,175 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:27:28,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554966177] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:27:28,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 02:27:28,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [16] total 22 [2023-12-21 02:27:28,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008011553] [2023-12-21 02:27:28,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:27:28,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 02:27:28,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:27:28,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 02:27:28,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2023-12-21 02:27:28,176 INFO L87 Difference]: Start difference. First operand 1020 states and 1236 transitions. Second operand has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-21 02:27:28,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:27:28,739 INFO L93 Difference]: Finished difference Result 2135 states and 2582 transitions. [2023-12-21 02:27:28,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 02:27:28,739 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 224 [2023-12-21 02:27:28,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:27:28,741 INFO L225 Difference]: With dead ends: 2135 [2023-12-21 02:27:28,741 INFO L226 Difference]: Without dead ends: 1587 [2023-12-21 02:27:28,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 296 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=108, Invalid=704, Unknown=0, NotChecked=0, Total=812 [2023-12-21 02:27:28,742 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 220 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 02:27:28,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 488 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 02:27:28,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1587 states. [2023-12-21 02:27:28,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1587 to 1000. [2023-12-21 02:27:28,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1000 states, 926 states have (on average 1.187904967602592) internal successors, (1100), 928 states have internal predecessors, (1100), 54 states have call successors, (54), 19 states have call predecessors, (54), 19 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-21 02:27:28,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1208 transitions. [2023-12-21 02:27:28,844 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1208 transitions. Word has length 224 [2023-12-21 02:27:28,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:27:28,844 INFO L495 AbstractCegarLoop]: Abstraction has 1000 states and 1208 transitions. [2023-12-21 02:27:28,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-21 02:27:28,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1208 transitions. [2023-12-21 02:27:28,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2023-12-21 02:27:28,846 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:27:28,846 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:27:28,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-21 02:27:29,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:27:29,055 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:27:29,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:27:29,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1602591378, now seen corresponding path program 1 times [2023-12-21 02:27:29,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:27:29,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379872832] [2023-12-21 02:27:29,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:27:29,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:27:29,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:29,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:27:29,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:29,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:27:29,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:29,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:27:29,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:29,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:27:29,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:29,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:27:29,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:29,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:27:29,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:29,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:27:29,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:29,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:27:29,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:29,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:27:29,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:29,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:27:29,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:29,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:27:29,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:29,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:27:29,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:29,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:27:29,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:29,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:27:29,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:29,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 02:27:29,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:29,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-21 02:27:29,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:29,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-21 02:27:29,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:29,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-21 02:27:29,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:29,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-21 02:27:29,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:29,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-12-21 02:27:29,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:29,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-21 02:27:29,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:29,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-21 02:27:29,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:29,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-21 02:27:29,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:29,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-12-21 02:27:29,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:29,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-12-21 02:27:29,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:29,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-12-21 02:27:29,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:29,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2023-12-21 02:27:29,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:29,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2023-12-21 02:27:29,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:29,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1563 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 1546 trivial. 0 not checked. [2023-12-21 02:27:29,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:27:29,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379872832] [2023-12-21 02:27:29,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379872832] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:27:29,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:27:29,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 02:27:29,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312259111] [2023-12-21 02:27:29,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:27:29,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 02:27:29,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:27:29,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 02:27:29,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-21 02:27:29,493 INFO L87 Difference]: Start difference. First operand 1000 states and 1208 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-21 02:27:29,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:27:29,779 INFO L93 Difference]: Finished difference Result 2117 states and 2530 transitions. [2023-12-21 02:27:29,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 02:27:29,780 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 225 [2023-12-21 02:27:29,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:27:29,782 INFO L225 Difference]: With dead ends: 2117 [2023-12-21 02:27:29,782 INFO L226 Difference]: Without dead ends: 1305 [2023-12-21 02:27:29,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-21 02:27:29,783 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 87 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 02:27:29,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 354 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 02:27:29,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1305 states. [2023-12-21 02:27:29,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1305 to 1054. [2023-12-21 02:27:29,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1054 states, 980 states have (on average 1.1959183673469387) internal successors, (1172), 982 states have internal predecessors, (1172), 54 states have call successors, (54), 19 states have call predecessors, (54), 19 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-21 02:27:29,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1054 states to 1054 states and 1280 transitions. [2023-12-21 02:27:29,894 INFO L78 Accepts]: Start accepts. Automaton has 1054 states and 1280 transitions. Word has length 225 [2023-12-21 02:27:29,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:27:29,894 INFO L495 AbstractCegarLoop]: Abstraction has 1054 states and 1280 transitions. [2023-12-21 02:27:29,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-21 02:27:29,894 INFO L276 IsEmpty]: Start isEmpty. Operand 1054 states and 1280 transitions. [2023-12-21 02:27:29,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2023-12-21 02:27:29,896 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:27:29,896 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:27:29,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2023-12-21 02:27:29,896 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:27:29,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:27:29,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1383736660, now seen corresponding path program 1 times [2023-12-21 02:27:29,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:27:29,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179865318] [2023-12-21 02:27:29,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:27:29,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:27:30,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:30,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:27:30,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:30,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:27:30,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:30,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:27:30,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:30,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:27:30,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:30,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:27:30,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:30,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:27:30,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:30,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:27:30,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:30,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:27:30,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:30,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:27:30,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:30,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:27:30,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:30,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:27:30,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:30,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:27:30,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:30,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:27:30,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:30,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:27:30,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:30,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 02:27:30,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:30,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-21 02:27:30,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:30,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-21 02:27:30,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:30,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-21 02:27:30,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:30,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-21 02:27:30,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:30,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-12-21 02:27:30,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:30,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-21 02:27:30,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:30,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-21 02:27:30,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:30,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-21 02:27:30,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:30,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-12-21 02:27:30,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:30,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-12-21 02:27:30,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:30,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-12-21 02:27:30,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:30,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2023-12-21 02:27:30,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:30,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2023-12-21 02:27:30,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:30,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1563 backedges. 40 proven. 75 refuted. 0 times theorem prover too weak. 1448 trivial. 0 not checked. [2023-12-21 02:27:30,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:27:30,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179865318] [2023-12-21 02:27:30,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179865318] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 02:27:30,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220883146] [2023-12-21 02:27:30,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:27:30,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:27:30,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:27:30,837 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 02:27:30,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 02:27:31,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:31,072 INFO L262 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-21 02:27:31,076 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:27:31,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2023-12-21 02:27:31,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1563 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 1546 trivial. 0 not checked. [2023-12-21 02:27:31,203 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:27:31,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220883146] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:27:31,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 02:27:31,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-12-21 02:27:31,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842079938] [2023-12-21 02:27:31,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:27:31,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 02:27:31,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:27:31,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 02:27:31,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2023-12-21 02:27:31,205 INFO L87 Difference]: Start difference. First operand 1054 states and 1280 transitions. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-21 02:27:31,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:27:31,891 INFO L93 Difference]: Finished difference Result 2303 states and 2782 transitions. [2023-12-21 02:27:31,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 02:27:31,891 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 225 [2023-12-21 02:27:31,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:27:31,893 INFO L225 Difference]: With dead ends: 2303 [2023-12-21 02:27:31,893 INFO L226 Difference]: Without dead ends: 1360 [2023-12-21 02:27:31,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=529, Unknown=0, NotChecked=0, Total=650 [2023-12-21 02:27:31,894 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 175 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 02:27:31,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 1004 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 02:27:31,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1360 states. [2023-12-21 02:27:31,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 1054. [2023-12-21 02:27:31,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1054 states, 980 states have (on average 1.1959183673469387) internal successors, (1172), 982 states have internal predecessors, (1172), 54 states have call successors, (54), 19 states have call predecessors, (54), 19 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-21 02:27:31,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1054 states to 1054 states and 1280 transitions. [2023-12-21 02:27:31,996 INFO L78 Accepts]: Start accepts. Automaton has 1054 states and 1280 transitions. Word has length 225 [2023-12-21 02:27:31,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:27:31,996 INFO L495 AbstractCegarLoop]: Abstraction has 1054 states and 1280 transitions. [2023-12-21 02:27:31,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-21 02:27:31,996 INFO L276 IsEmpty]: Start isEmpty. Operand 1054 states and 1280 transitions. [2023-12-21 02:27:31,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2023-12-21 02:27:31,998 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:27:31,998 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:27:32,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-21 02:27:32,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2023-12-21 02:27:32,201 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:27:32,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:27:32,202 INFO L85 PathProgramCache]: Analyzing trace with hash -990709650, now seen corresponding path program 1 times [2023-12-21 02:27:32,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:27:32,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312859125] [2023-12-21 02:27:32,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:27:32,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:27:32,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:32,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:27:32,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:32,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:27:32,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:32,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:27:32,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:32,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:27:32,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:32,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:27:32,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:32,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:27:32,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:32,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:27:32,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:32,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:27:32,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:32,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:27:32,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:32,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:27:32,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:32,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:27:32,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:32,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:27:32,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:32,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:27:32,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:32,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:27:32,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:32,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 02:27:32,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:32,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-21 02:27:32,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:32,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-21 02:27:32,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:32,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-21 02:27:32,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:32,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-21 02:27:32,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:32,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-12-21 02:27:32,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:32,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-21 02:27:32,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:32,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-21 02:27:32,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:32,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-21 02:27:32,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:32,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-12-21 02:27:32,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:32,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-12-21 02:27:32,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:32,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-12-21 02:27:32,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:32,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2023-12-21 02:27:32,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:32,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2023-12-21 02:27:32,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:32,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1563 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 1546 trivial. 0 not checked. [2023-12-21 02:27:32,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:27:32,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312859125] [2023-12-21 02:27:32,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312859125] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:27:32,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:27:32,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 02:27:32,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404456637] [2023-12-21 02:27:32,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:27:32,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 02:27:32,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:27:32,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 02:27:32,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-21 02:27:32,595 INFO L87 Difference]: Start difference. First operand 1054 states and 1280 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-21 02:27:32,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:27:32,886 INFO L93 Difference]: Finished difference Result 2061 states and 2480 transitions. [2023-12-21 02:27:32,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 02:27:32,886 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 225 [2023-12-21 02:27:32,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:27:32,888 INFO L225 Difference]: With dead ends: 2061 [2023-12-21 02:27:32,888 INFO L226 Difference]: Without dead ends: 1118 [2023-12-21 02:27:32,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-21 02:27:32,890 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 63 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 02:27:32,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 422 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 02:27:32,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1118 states. [2023-12-21 02:27:32,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1118 to 1038. [2023-12-21 02:27:32,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1038 states, 964 states have (on average 1.1908713692946058) internal successors, (1148), 966 states have internal predecessors, (1148), 54 states have call successors, (54), 19 states have call predecessors, (54), 19 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-21 02:27:32,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1256 transitions. [2023-12-21 02:27:32,986 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1256 transitions. Word has length 225 [2023-12-21 02:27:32,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:27:32,986 INFO L495 AbstractCegarLoop]: Abstraction has 1038 states and 1256 transitions. [2023-12-21 02:27:32,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-21 02:27:32,986 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1256 transitions. [2023-12-21 02:27:32,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2023-12-21 02:27:32,988 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:27:32,988 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:27:32,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2023-12-21 02:27:32,988 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:27:32,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:27:32,989 INFO L85 PathProgramCache]: Analyzing trace with hash 888000363, now seen corresponding path program 1 times [2023-12-21 02:27:32,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:27:32,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445767574] [2023-12-21 02:27:32,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:27:32,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:27:33,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:33,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:27:33,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:33,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:27:33,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:33,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:27:33,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:33,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:27:33,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:33,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:27:33,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:33,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:27:33,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:33,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:27:33,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:33,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:27:33,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:33,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:27:33,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:33,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:27:33,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:33,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:27:33,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:33,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:27:33,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:33,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:27:33,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:33,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:27:33,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:33,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 02:27:33,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:33,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-21 02:27:33,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:33,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-21 02:27:33,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:33,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-21 02:27:33,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:33,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-21 02:27:33,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:33,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-12-21 02:27:33,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:33,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-21 02:27:33,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:33,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-21 02:27:33,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:33,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-21 02:27:33,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:33,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-12-21 02:27:33,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:33,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-12-21 02:27:33,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:33,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-12-21 02:27:33,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:33,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2023-12-21 02:27:33,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:33,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2023-12-21 02:27:33,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:33,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 1546 trivial. 0 not checked. [2023-12-21 02:27:33,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:27:33,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445767574] [2023-12-21 02:27:33,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445767574] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:27:33,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:27:33,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 02:27:33,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073709838] [2023-12-21 02:27:33,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:27:33,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 02:27:33,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:27:33,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 02:27:33,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 02:27:33,663 INFO L87 Difference]: Start difference. First operand 1038 states and 1256 transitions. Second operand has 6 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-21 02:27:33,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:27:33,963 INFO L93 Difference]: Finished difference Result 1855 states and 2233 transitions. [2023-12-21 02:27:33,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 02:27:33,964 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 226 [2023-12-21 02:27:33,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:27:33,965 INFO L225 Difference]: With dead ends: 1855 [2023-12-21 02:27:33,965 INFO L226 Difference]: Without dead ends: 1249 [2023-12-21 02:27:33,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 02:27:33,966 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 90 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 02:27:33,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 411 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 02:27:33,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2023-12-21 02:27:34,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 1156. [2023-12-21 02:27:34,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1156 states, 1076 states have (on average 1.1719330855018588) internal successors, (1261), 1079 states have internal predecessors, (1261), 58 states have call successors, (58), 21 states have call predecessors, (58), 21 states have return successors, (58), 55 states have call predecessors, (58), 58 states have call successors, (58) [2023-12-21 02:27:34,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1377 transitions. [2023-12-21 02:27:34,083 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1377 transitions. Word has length 226 [2023-12-21 02:27:34,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:27:34,084 INFO L495 AbstractCegarLoop]: Abstraction has 1156 states and 1377 transitions. [2023-12-21 02:27:34,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-21 02:27:34,084 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1377 transitions. [2023-12-21 02:27:34,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2023-12-21 02:27:34,086 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:27:34,086 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:27:34,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2023-12-21 02:27:34,086 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:27:34,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:27:34,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1006620821, now seen corresponding path program 1 times [2023-12-21 02:27:34,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:27:34,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594040435] [2023-12-21 02:27:34,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:27:34,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:27:34,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:34,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:27:34,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:34,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:27:34,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:34,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:27:34,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:34,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:27:34,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:34,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:27:34,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:34,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:27:34,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:34,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:27:34,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:34,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:27:34,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:34,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:27:34,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:34,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:27:34,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:34,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:27:34,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:34,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:27:34,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:34,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:27:34,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:34,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:27:34,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:34,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 02:27:34,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:34,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-21 02:27:34,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:34,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-21 02:27:34,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:34,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-21 02:27:34,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:34,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-21 02:27:34,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:34,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-12-21 02:27:34,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:34,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-21 02:27:34,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:34,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-21 02:27:34,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:34,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-21 02:27:34,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:34,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-12-21 02:27:34,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:34,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-12-21 02:27:34,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:34,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-12-21 02:27:34,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:34,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2023-12-21 02:27:34,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:34,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2023-12-21 02:27:34,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:34,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1552 trivial. 0 not checked. [2023-12-21 02:27:34,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:27:34,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594040435] [2023-12-21 02:27:34,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594040435] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:27:34,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:27:34,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 02:27:34,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214713222] [2023-12-21 02:27:34,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:27:34,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 02:27:34,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:27:34,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 02:27:34,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 02:27:34,291 INFO L87 Difference]: Start difference. First operand 1156 states and 1377 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-21 02:27:34,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:27:34,572 INFO L93 Difference]: Finished difference Result 1971 states and 2348 transitions. [2023-12-21 02:27:34,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 02:27:34,572 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 226 [2023-12-21 02:27:34,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:27:34,574 INFO L225 Difference]: With dead ends: 1971 [2023-12-21 02:27:34,574 INFO L226 Difference]: Without dead ends: 1320 [2023-12-21 02:27:34,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-21 02:27:34,576 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 86 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 02:27:34,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 242 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 02:27:34,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2023-12-21 02:27:34,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1171. [2023-12-21 02:27:34,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1171 states, 1091 states have (on average 1.1695692025664528) internal successors, (1276), 1094 states have internal predecessors, (1276), 58 states have call successors, (58), 21 states have call predecessors, (58), 21 states have return successors, (58), 55 states have call predecessors, (58), 58 states have call successors, (58) [2023-12-21 02:27:34,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 1392 transitions. [2023-12-21 02:27:34,696 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 1392 transitions. Word has length 226 [2023-12-21 02:27:34,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:27:34,696 INFO L495 AbstractCegarLoop]: Abstraction has 1171 states and 1392 transitions. [2023-12-21 02:27:34,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-21 02:27:34,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 1392 transitions. [2023-12-21 02:27:34,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2023-12-21 02:27:34,698 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:27:34,698 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:27:34,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2023-12-21 02:27:34,698 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:27:34,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:27:34,699 INFO L85 PathProgramCache]: Analyzing trace with hash -911505392, now seen corresponding path program 1 times [2023-12-21 02:27:34,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:27:34,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240214117] [2023-12-21 02:27:34,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:27:34,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:27:34,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:35,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:27:35,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:35,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:27:35,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:35,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:27:35,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:35,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:27:35,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:35,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:27:35,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:35,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:27:35,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:35,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:27:35,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:35,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:27:35,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:35,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:27:35,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:35,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:27:35,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:35,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:27:35,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:35,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:27:35,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:35,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:27:35,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:35,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:27:35,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:35,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 02:27:35,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:35,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-21 02:27:35,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:35,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-21 02:27:35,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:35,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-21 02:27:35,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:35,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-21 02:27:35,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:35,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-12-21 02:27:35,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:35,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-21 02:27:35,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:35,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-21 02:27:35,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:35,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-21 02:27:35,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:35,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-12-21 02:27:35,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:35,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-12-21 02:27:35,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:35,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-12-21 02:27:35,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:35,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2023-12-21 02:27:35,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:35,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2023-12-21 02:27:35,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:35,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 1540 trivial. 0 not checked. [2023-12-21 02:27:35,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:27:35,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240214117] [2023-12-21 02:27:35,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240214117] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:27:35,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:27:35,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 02:27:35,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314337780] [2023-12-21 02:27:35,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:27:35,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 02:27:35,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:27:35,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 02:27:35,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 02:27:35,262 INFO L87 Difference]: Start difference. First operand 1171 states and 1392 transitions. Second operand has 6 states, 5 states have (on average 15.2) internal successors, (76), 6 states have internal predecessors, (76), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-21 02:27:35,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:27:35,598 INFO L93 Difference]: Finished difference Result 1940 states and 2315 transitions. [2023-12-21 02:27:35,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 02:27:35,599 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 15.2) internal successors, (76), 6 states have internal predecessors, (76), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 226 [2023-12-21 02:27:35,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:27:35,601 INFO L225 Difference]: With dead ends: 1940 [2023-12-21 02:27:35,601 INFO L226 Difference]: Without dead ends: 1274 [2023-12-21 02:27:35,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-21 02:27:35,602 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 99 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 02:27:35,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 366 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 02:27:35,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2023-12-21 02:27:35,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 1171. [2023-12-21 02:27:35,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1171 states, 1091 states have (on average 1.158570119156737) internal successors, (1264), 1094 states have internal predecessors, (1264), 58 states have call successors, (58), 21 states have call predecessors, (58), 21 states have return successors, (58), 55 states have call predecessors, (58), 58 states have call successors, (58) [2023-12-21 02:27:35,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 1380 transitions. [2023-12-21 02:27:35,726 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 1380 transitions. Word has length 226 [2023-12-21 02:27:35,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:27:35,726 INFO L495 AbstractCegarLoop]: Abstraction has 1171 states and 1380 transitions. [2023-12-21 02:27:35,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 15.2) internal successors, (76), 6 states have internal predecessors, (76), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-21 02:27:35,726 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 1380 transitions. [2023-12-21 02:27:35,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2023-12-21 02:27:35,728 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:27:35,728 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:27:35,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2023-12-21 02:27:35,728 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:27:35,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:27:35,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1386741010, now seen corresponding path program 1 times [2023-12-21 02:27:35,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:27:35,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746839563] [2023-12-21 02:27:35,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:27:35,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:27:35,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:36,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:27:36,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:36,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:27:36,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:36,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:27:36,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:36,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:27:36,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:36,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:27:36,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:36,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:27:36,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:36,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:27:36,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:36,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:27:36,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:36,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:27:36,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:36,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:27:36,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:36,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:27:36,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:36,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:27:36,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:36,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:27:36,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:36,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:27:36,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:36,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 02:27:36,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:36,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-21 02:27:36,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:36,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-21 02:27:36,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:36,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-21 02:27:36,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:36,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-21 02:27:36,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:36,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-12-21 02:27:36,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:36,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-21 02:27:36,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:36,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-21 02:27:36,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:36,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-21 02:27:36,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:36,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-12-21 02:27:36,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:36,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-12-21 02:27:36,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:36,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-12-21 02:27:36,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:36,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2023-12-21 02:27:36,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:36,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2023-12-21 02:27:36,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:36,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1566 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 1546 trivial. 0 not checked. [2023-12-21 02:27:36,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:27:36,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746839563] [2023-12-21 02:27:36,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746839563] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:27:36,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:27:36,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 02:27:36,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70345092] [2023-12-21 02:27:36,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:27:36,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 02:27:36,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:27:36,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 02:27:36,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 02:27:36,511 INFO L87 Difference]: Start difference. First operand 1171 states and 1380 transitions. Second operand has 6 states, 5 states have (on average 14.4) internal successors, (72), 6 states have internal predecessors, (72), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-21 02:27:36,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:27:36,807 INFO L93 Difference]: Finished difference Result 1926 states and 2268 transitions. [2023-12-21 02:27:36,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 02:27:36,808 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.4) internal successors, (72), 6 states have internal predecessors, (72), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 228 [2023-12-21 02:27:36,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:27:36,810 INFO L225 Difference]: With dead ends: 1926 [2023-12-21 02:27:36,810 INFO L226 Difference]: Without dead ends: 1260 [2023-12-21 02:27:36,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 02:27:36,811 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 89 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 02:27:36,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 392 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 02:27:36,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2023-12-21 02:27:36,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 1088. [2023-12-21 02:27:36,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1088 states, 1008 states have (on average 1.1636904761904763) internal successors, (1173), 1011 states have internal predecessors, (1173), 58 states have call successors, (58), 21 states have call predecessors, (58), 21 states have return successors, (58), 55 states have call predecessors, (58), 58 states have call successors, (58) [2023-12-21 02:27:36,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1088 states to 1088 states and 1289 transitions. [2023-12-21 02:27:36,954 INFO L78 Accepts]: Start accepts. Automaton has 1088 states and 1289 transitions. Word has length 228 [2023-12-21 02:27:36,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:27:36,955 INFO L495 AbstractCegarLoop]: Abstraction has 1088 states and 1289 transitions. [2023-12-21 02:27:36,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.4) internal successors, (72), 6 states have internal predecessors, (72), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-21 02:27:36,955 INFO L276 IsEmpty]: Start isEmpty. Operand 1088 states and 1289 transitions. [2023-12-21 02:27:36,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2023-12-21 02:27:36,956 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:27:36,956 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:27:36,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2023-12-21 02:27:36,957 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:27:36,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:27:36,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1688243474, now seen corresponding path program 1 times [2023-12-21 02:27:36,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:27:36,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75657349] [2023-12-21 02:27:36,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:27:36,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:27:37,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:37,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:27:37,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:37,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:27:37,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:37,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:27:37,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:37,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:27:37,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:37,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:27:37,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:37,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:27:37,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:37,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:27:37,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:37,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:27:37,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:37,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:27:37,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:37,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:27:37,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:37,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:27:37,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:37,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:27:37,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:37,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:27:37,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:37,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:27:37,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:37,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 02:27:37,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:37,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-21 02:27:37,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:37,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-21 02:27:37,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:37,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-21 02:27:37,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:37,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-21 02:27:37,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:37,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-12-21 02:27:37,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:37,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-21 02:27:37,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:37,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-21 02:27:37,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:37,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-21 02:27:37,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:37,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-12-21 02:27:37,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:37,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-12-21 02:27:37,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:37,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-12-21 02:27:37,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:37,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2023-12-21 02:27:37,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:37,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2023-12-21 02:27:37,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:37,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1566 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 1545 trivial. 0 not checked. [2023-12-21 02:27:37,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:27:37,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75657349] [2023-12-21 02:27:37,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75657349] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:27:37,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:27:37,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 02:27:37,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988531609] [2023-12-21 02:27:37,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:27:37,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 02:27:37,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:27:37,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 02:27:37,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 02:27:37,772 INFO L87 Difference]: Start difference. First operand 1088 states and 1289 transitions. Second operand has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 7 states have internal predecessors, (74), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-21 02:27:38,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:27:38,185 INFO L93 Difference]: Finished difference Result 1889 states and 2225 transitions. [2023-12-21 02:27:38,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 02:27:38,186 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 7 states have internal predecessors, (74), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 228 [2023-12-21 02:27:38,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:27:38,188 INFO L225 Difference]: With dead ends: 1889 [2023-12-21 02:27:38,188 INFO L226 Difference]: Without dead ends: 1233 [2023-12-21 02:27:38,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-21 02:27:38,189 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 111 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 02:27:38,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 354 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 02:27:38,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1233 states. [2023-12-21 02:27:38,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1233 to 1052. [2023-12-21 02:27:38,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1052 states, 972 states have (on average 1.1635802469135803) internal successors, (1131), 975 states have internal predecessors, (1131), 58 states have call successors, (58), 21 states have call predecessors, (58), 21 states have return successors, (58), 55 states have call predecessors, (58), 58 states have call successors, (58) [2023-12-21 02:27:38,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1247 transitions. [2023-12-21 02:27:38,309 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1247 transitions. Word has length 228 [2023-12-21 02:27:38,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:27:38,310 INFO L495 AbstractCegarLoop]: Abstraction has 1052 states and 1247 transitions. [2023-12-21 02:27:38,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 7 states have internal predecessors, (74), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-21 02:27:38,310 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1247 transitions. [2023-12-21 02:27:38,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2023-12-21 02:27:38,311 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:27:38,312 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:27:38,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2023-12-21 02:27:38,312 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:27:38,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:27:38,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1235414199, now seen corresponding path program 1 times [2023-12-21 02:27:38,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:27:38,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519446739] [2023-12-21 02:27:38,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:27:38,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:27:38,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:40,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:27:40,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:40,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:27:40,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:40,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:27:40,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:40,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:27:40,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:40,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:27:40,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:40,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:27:40,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:40,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:27:40,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:40,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:27:40,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:40,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:27:40,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:40,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:27:40,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:40,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:27:40,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:40,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:27:40,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:40,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:27:40,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:40,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:27:40,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:40,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 02:27:40,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:40,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-21 02:27:40,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:40,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-21 02:27:40,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:40,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-21 02:27:40,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:40,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-21 02:27:40,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:40,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-12-21 02:27:40,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:40,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-21 02:27:40,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:40,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-21 02:27:40,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:40,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-21 02:27:40,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:40,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-12-21 02:27:40,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:40,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-12-21 02:27:40,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:40,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-12-21 02:27:40,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:40,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2023-12-21 02:27:40,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:40,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2023-12-21 02:27:40,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:40,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 44 proven. 8 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-12-21 02:27:40,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:27:40,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519446739] [2023-12-21 02:27:40,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519446739] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 02:27:40,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339597357] [2023-12-21 02:27:40,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:27:40,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:27:40,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:27:40,267 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 02:27:40,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-21 02:27:40,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:40,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-21 02:27:40,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:27:40,564 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:27:40,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 15 [2023-12-21 02:27:40,610 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:27:40,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 28 [2023-12-21 02:27:40,618 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:27:40,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 60 treesize of output 71 [2023-12-21 02:27:40,659 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:27:40,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 79 treesize of output 87 [2023-12-21 02:27:40,732 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:27:40,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 93 treesize of output 35 [2023-12-21 02:27:40,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 1543 trivial. 0 not checked. [2023-12-21 02:27:40,747 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:27:40,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339597357] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:27:40,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 02:27:40,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 17 [2023-12-21 02:27:40,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431346294] [2023-12-21 02:27:40,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:27:40,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 02:27:40,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:27:40,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 02:27:40,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2023-12-21 02:27:40,748 INFO L87 Difference]: Start difference. First operand 1052 states and 1247 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-21 02:27:41,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:27:41,410 INFO L93 Difference]: Finished difference Result 2294 states and 2645 transitions. [2023-12-21 02:27:41,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 02:27:41,411 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 229 [2023-12-21 02:27:41,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:27:41,413 INFO L225 Difference]: With dead ends: 2294 [2023-12-21 02:27:41,413 INFO L226 Difference]: Without dead ends: 1674 [2023-12-21 02:27:41,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 296 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2023-12-21 02:27:41,414 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 229 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 02:27:41,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 531 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 02:27:41,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1674 states. [2023-12-21 02:27:41,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1674 to 1016. [2023-12-21 02:27:41,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1016 states, 936 states have (on average 1.1613247863247864) internal successors, (1087), 939 states have internal predecessors, (1087), 58 states have call successors, (58), 21 states have call predecessors, (58), 21 states have return successors, (58), 55 states have call predecessors, (58), 58 states have call successors, (58) [2023-12-21 02:27:41,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1203 transitions. [2023-12-21 02:27:41,540 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1203 transitions. Word has length 229 [2023-12-21 02:27:41,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:27:41,540 INFO L495 AbstractCegarLoop]: Abstraction has 1016 states and 1203 transitions. [2023-12-21 02:27:41,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-21 02:27:41,540 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1203 transitions. [2023-12-21 02:27:41,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2023-12-21 02:27:41,542 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:27:41,542 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:27:41,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-21 02:27:41,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:27:41,750 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:27:41,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:27:41,751 INFO L85 PathProgramCache]: Analyzing trace with hash -711137785, now seen corresponding path program 1 times [2023-12-21 02:27:41,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:27:41,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062816701] [2023-12-21 02:27:41,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:27:41,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:27:41,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:44,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:27:44,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:44,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:27:44,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:44,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:27:44,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:44,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:27:44,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:44,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:27:44,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:44,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:27:44,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:44,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:27:44,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:44,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:27:44,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:44,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:27:44,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:44,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:27:44,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:44,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:27:44,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:44,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:27:44,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:44,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:27:44,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:44,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:27:44,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:44,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 02:27:44,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:44,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-21 02:27:44,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:44,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-21 02:27:44,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:44,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-21 02:27:44,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:44,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-21 02:27:44,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:44,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-12-21 02:27:44,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:44,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-21 02:27:44,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:44,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-21 02:27:44,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:44,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-21 02:27:44,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:44,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-12-21 02:27:44,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:44,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-12-21 02:27:44,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:44,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-12-21 02:27:44,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:44,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2023-12-21 02:27:44,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:44,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2023-12-21 02:27:44,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:44,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 43 proven. 9 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-12-21 02:27:44,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:27:44,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062816701] [2023-12-21 02:27:44,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062816701] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 02:27:44,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180574282] [2023-12-21 02:27:44,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:27:44,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:27:44,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:27:44,268 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 02:27:44,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-21 02:27:44,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:44,540 INFO L262 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-21 02:27:44,545 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:27:44,549 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:27:44,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 15 [2023-12-21 02:27:44,649 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:27:44,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 81 treesize of output 53 [2023-12-21 02:27:44,662 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:27:44,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 100 treesize of output 96 [2023-12-21 02:27:44,715 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:27:44,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 119 treesize of output 112 [2023-12-21 02:27:44,901 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:27:44,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 165 treesize of output 65 [2023-12-21 02:27:44,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 1543 trivial. 0 not checked. [2023-12-21 02:27:44,961 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:27:44,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180574282] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:27:44,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 02:27:44,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [18] total 24 [2023-12-21 02:27:44,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806857685] [2023-12-21 02:27:44,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:27:44,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 02:27:44,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:27:44,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 02:27:44,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2023-12-21 02:27:44,963 INFO L87 Difference]: Start difference. First operand 1016 states and 1203 transitions. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-21 02:27:45,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:27:45,856 INFO L93 Difference]: Finished difference Result 1876 states and 2203 transitions. [2023-12-21 02:27:45,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 02:27:45,857 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 229 [2023-12-21 02:27:45,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:27:45,858 INFO L225 Difference]: With dead ends: 1876 [2023-12-21 02:27:45,858 INFO L226 Difference]: Without dead ends: 1256 [2023-12-21 02:27:45,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 298 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=91, Invalid=559, Unknown=0, NotChecked=0, Total=650 [2023-12-21 02:27:45,860 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 183 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 02:27:45,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 680 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 669 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 02:27:45,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2023-12-21 02:27:46,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 982. [2023-12-21 02:27:46,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 982 states, 902 states have (on average 1.1629711751662972) internal successors, (1049), 905 states have internal predecessors, (1049), 58 states have call successors, (58), 21 states have call predecessors, (58), 21 states have return successors, (58), 55 states have call predecessors, (58), 58 states have call successors, (58) [2023-12-21 02:27:46,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1165 transitions. [2023-12-21 02:27:46,002 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1165 transitions. Word has length 229 [2023-12-21 02:27:46,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:27:46,002 INFO L495 AbstractCegarLoop]: Abstraction has 982 states and 1165 transitions. [2023-12-21 02:27:46,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-21 02:27:46,002 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1165 transitions. [2023-12-21 02:27:46,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2023-12-21 02:27:46,004 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:27:46,004 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:27:46,011 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-21 02:27:46,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:27:46,212 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:27:46,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:27:46,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1722255035, now seen corresponding path program 1 times [2023-12-21 02:27:46,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:27:46,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110492682] [2023-12-21 02:27:46,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:27:46,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:27:46,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:47,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:27:47,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:47,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:27:47,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:47,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:27:47,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:47,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:27:47,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:47,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:27:47,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:47,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:27:47,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:47,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:27:47,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:47,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:27:47,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:47,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:27:47,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:47,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:27:47,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:47,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:27:47,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:47,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:27:47,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:47,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:27:47,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:47,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:27:47,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:47,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 02:27:47,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:47,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-21 02:27:47,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:47,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-21 02:27:47,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:47,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-21 02:27:47,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:47,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-21 02:27:47,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:47,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-12-21 02:27:47,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:47,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-21 02:27:47,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:47,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-21 02:27:47,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:47,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-21 02:27:47,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:47,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-12-21 02:27:47,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:47,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-12-21 02:27:47,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:47,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-12-21 02:27:47,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:47,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2023-12-21 02:27:47,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:47,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2023-12-21 02:27:47,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:47,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 1539 trivial. 0 not checked. [2023-12-21 02:27:47,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:27:47,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110492682] [2023-12-21 02:27:47,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110492682] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:27:47,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:27:47,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 02:27:47,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528848563] [2023-12-21 02:27:47,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:27:47,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 02:27:47,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:27:47,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 02:27:47,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-12-21 02:27:47,699 INFO L87 Difference]: Start difference. First operand 982 states and 1165 transitions. Second operand has 11 states, 7 states have (on average 11.428571428571429) internal successors, (80), 11 states have internal predecessors, (80), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 5 states have call successors, (18) [2023-12-21 02:27:48,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:27:48,726 INFO L93 Difference]: Finished difference Result 1764 states and 2072 transitions. [2023-12-21 02:27:48,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 02:27:48,731 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 7 states have (on average 11.428571428571429) internal successors, (80), 11 states have internal predecessors, (80), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 5 states have call successors, (18) Word has length 229 [2023-12-21 02:27:48,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:27:48,733 INFO L225 Difference]: With dead ends: 1764 [2023-12-21 02:27:48,733 INFO L226 Difference]: Without dead ends: 1181 [2023-12-21 02:27:48,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2023-12-21 02:27:48,734 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 151 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 1073 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 1080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 02:27:48,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 722 Invalid, 1080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1073 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 02:27:48,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2023-12-21 02:27:48,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 982. [2023-12-21 02:27:48,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 982 states, 902 states have (on average 1.1585365853658536) internal successors, (1045), 905 states have internal predecessors, (1045), 58 states have call successors, (58), 21 states have call predecessors, (58), 21 states have return successors, (58), 55 states have call predecessors, (58), 58 states have call successors, (58) [2023-12-21 02:27:48,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1161 transitions. [2023-12-21 02:27:48,870 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1161 transitions. Word has length 229 [2023-12-21 02:27:48,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:27:48,870 INFO L495 AbstractCegarLoop]: Abstraction has 982 states and 1161 transitions. [2023-12-21 02:27:48,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 7 states have (on average 11.428571428571429) internal successors, (80), 11 states have internal predecessors, (80), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 5 states have call successors, (18) [2023-12-21 02:27:48,871 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1161 transitions. [2023-12-21 02:27:48,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2023-12-21 02:27:48,872 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:27:48,872 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:27:48,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2023-12-21 02:27:48,872 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:27:48,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:27:48,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1662799741, now seen corresponding path program 1 times [2023-12-21 02:27:48,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:27:48,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011773494] [2023-12-21 02:27:48,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:27:48,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:27:48,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:50,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:27:50,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:50,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:27:50,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:50,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:27:50,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:50,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:27:50,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:50,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:27:50,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:50,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:27:50,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:50,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:27:50,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:50,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:27:50,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:50,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:27:50,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:50,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:27:50,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:50,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:27:50,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:50,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:27:50,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:50,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:27:50,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:50,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:27:50,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:50,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 02:27:50,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:50,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-21 02:27:50,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:50,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-21 02:27:50,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:50,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-21 02:27:50,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:50,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-21 02:27:50,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:50,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-12-21 02:27:50,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:50,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-21 02:27:50,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:50,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-21 02:27:50,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:50,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-21 02:27:50,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:50,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-12-21 02:27:50,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:50,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-12-21 02:27:50,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:50,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-12-21 02:27:50,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:50,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2023-12-21 02:27:50,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:50,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2023-12-21 02:27:50,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:50,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-12-21 02:27:50,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:27:50,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011773494] [2023-12-21 02:27:50,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011773494] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:27:50,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:27:50,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 02:27:50,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153746576] [2023-12-21 02:27:50,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:27:50,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 02:27:50,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:27:50,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 02:27:50,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-21 02:27:50,487 INFO L87 Difference]: Start difference. First operand 982 states and 1161 transitions. Second operand has 12 states, 9 states have (on average 10.222222222222221) internal successors, (92), 12 states have internal predecessors, (92), 5 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 2 states have call predecessors, (28), 5 states have call successors, (28) [2023-12-21 02:27:52,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:27:52,168 INFO L93 Difference]: Finished difference Result 2331 states and 2723 transitions. [2023-12-21 02:27:52,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-21 02:27:52,169 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 10.222222222222221) internal successors, (92), 12 states have internal predecessors, (92), 5 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 2 states have call predecessors, (28), 5 states have call successors, (28) Word has length 229 [2023-12-21 02:27:52,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:27:52,172 INFO L225 Difference]: With dead ends: 2331 [2023-12-21 02:27:52,172 INFO L226 Difference]: Without dead ends: 1748 [2023-12-21 02:27:52,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 79 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=708, Unknown=0, NotChecked=0, Total=870 [2023-12-21 02:27:52,174 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 284 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 1553 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 02:27:52,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 884 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1553 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 02:27:52,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1748 states. [2023-12-21 02:27:52,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1748 to 1243. [2023-12-21 02:27:52,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1243 states, 1127 states have (on average 1.1526175687666371) internal successors, (1299), 1132 states have internal predecessors, (1299), 84 states have call successors, (84), 31 states have call predecessors, (84), 31 states have return successors, (84), 79 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-21 02:27:52,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1243 states to 1243 states and 1467 transitions. [2023-12-21 02:27:52,421 INFO L78 Accepts]: Start accepts. Automaton has 1243 states and 1467 transitions. Word has length 229 [2023-12-21 02:27:52,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:27:52,421 INFO L495 AbstractCegarLoop]: Abstraction has 1243 states and 1467 transitions. [2023-12-21 02:27:52,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 10.222222222222221) internal successors, (92), 12 states have internal predecessors, (92), 5 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 2 states have call predecessors, (28), 5 states have call successors, (28) [2023-12-21 02:27:52,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1243 states and 1467 transitions. [2023-12-21 02:27:52,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2023-12-21 02:27:52,423 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:27:52,424 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:27:52,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2023-12-21 02:27:52,424 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:27:52,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:27:52,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1972061957, now seen corresponding path program 1 times [2023-12-21 02:27:52,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:27:52,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421173434] [2023-12-21 02:27:52,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:27:52,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:27:52,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:54,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:27:54,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:54,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:27:54,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:54,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:27:54,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:54,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:27:54,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:54,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:27:54,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:54,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:27:54,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:54,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:27:54,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:54,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:27:54,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:54,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:27:54,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:54,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:27:54,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:54,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:27:54,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:54,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:27:54,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:54,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:27:54,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:54,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:27:54,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:54,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 02:27:54,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:54,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-21 02:27:54,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:54,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-21 02:27:54,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:54,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-21 02:27:54,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:54,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-21 02:27:54,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:54,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-12-21 02:27:54,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:54,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-21 02:27:54,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:54,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-21 02:27:54,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:54,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-21 02:27:54,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:54,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-12-21 02:27:54,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:54,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-12-21 02:27:54,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:54,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-12-21 02:27:54,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:54,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2023-12-21 02:27:54,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:54,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2023-12-21 02:27:54,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:54,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 42 proven. 10 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-12-21 02:27:54,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:27:54,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421173434] [2023-12-21 02:27:54,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421173434] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 02:27:54,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369726839] [2023-12-21 02:27:54,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:27:54,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:27:54,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:27:54,799 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 02:27:54,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-21 02:27:55,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:55,085 INFO L262 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-21 02:27:55,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:27:55,097 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:27:55,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 48 treesize of output 18 [2023-12-21 02:27:55,108 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:27:55,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 39 [2023-12-21 02:27:55,254 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:27:55,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 83 treesize of output 76 [2023-12-21 02:27:55,276 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:27:55,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 102 treesize of output 110 [2023-12-21 02:27:55,342 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:27:55,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 121 treesize of output 126 [2023-12-21 02:27:55,552 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:27:55,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 146 treesize of output 52 [2023-12-21 02:27:55,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 1541 trivial. 0 not checked. [2023-12-21 02:27:55,588 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:27:55,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369726839] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:27:55,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 02:27:55,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [17] total 25 [2023-12-21 02:27:55,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940519897] [2023-12-21 02:27:55,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:27:55,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 02:27:55,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:27:55,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 02:27:55,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=525, Unknown=0, NotChecked=0, Total=600 [2023-12-21 02:27:55,589 INFO L87 Difference]: Start difference. First operand 1243 states and 1467 transitions. Second operand has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-21 02:27:56,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:27:56,646 INFO L93 Difference]: Finished difference Result 2476 states and 2890 transitions. [2023-12-21 02:27:56,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 02:27:56,647 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 229 [2023-12-21 02:27:56,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:27:56,649 INFO L225 Difference]: With dead ends: 2476 [2023-12-21 02:27:56,649 INFO L226 Difference]: Without dead ends: 1632 [2023-12-21 02:27:56,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 293 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=94, Invalid=608, Unknown=0, NotChecked=0, Total=702 [2023-12-21 02:27:56,650 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 299 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 02:27:56,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 582 Invalid, 687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 02:27:56,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2023-12-21 02:27:56,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 1253. [2023-12-21 02:27:56,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1253 states, 1137 states have (on average 1.1539138082673703) internal successors, (1312), 1142 states have internal predecessors, (1312), 84 states have call successors, (84), 31 states have call predecessors, (84), 31 states have return successors, (84), 79 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-21 02:27:56,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1253 states to 1253 states and 1480 transitions. [2023-12-21 02:27:56,859 INFO L78 Accepts]: Start accepts. Automaton has 1253 states and 1480 transitions. Word has length 229 [2023-12-21 02:27:56,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:27:56,860 INFO L495 AbstractCegarLoop]: Abstraction has 1253 states and 1480 transitions. [2023-12-21 02:27:56,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-21 02:27:56,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1253 states and 1480 transitions. [2023-12-21 02:27:56,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2023-12-21 02:27:56,862 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:27:56,862 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:27:56,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-21 02:27:57,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2023-12-21 02:27:57,070 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:27:57,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:27:57,070 INFO L85 PathProgramCache]: Analyzing trace with hash -2042011007, now seen corresponding path program 1 times [2023-12-21 02:27:57,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:27:57,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104175134] [2023-12-21 02:27:57,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:27:57,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:27:57,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:58,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:27:58,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:58,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:27:58,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:58,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:27:58,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:58,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:27:58,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:58,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:27:58,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:58,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:27:58,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:58,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:27:58,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:58,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:27:58,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:58,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:27:58,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:58,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:27:58,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:58,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:27:58,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:58,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:27:58,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:58,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:27:58,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:58,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:27:58,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:58,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 02:27:58,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:58,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-21 02:27:58,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:58,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-21 02:27:58,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:58,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-21 02:27:58,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:58,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-21 02:27:58,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:58,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-12-21 02:27:58,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:58,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-21 02:27:58,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:58,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-21 02:27:58,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:58,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-21 02:27:58,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:58,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-12-21 02:27:58,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:58,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-12-21 02:27:58,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:58,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-12-21 02:27:58,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:58,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2023-12-21 02:27:58,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:58,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2023-12-21 02:27:58,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:58,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 43 proven. 9 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-12-21 02:27:58,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:27:58,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104175134] [2023-12-21 02:27:58,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104175134] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 02:27:58,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034102114] [2023-12-21 02:27:58,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:27:58,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:27:58,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:27:58,830 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 02:27:58,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-21 02:27:59,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:27:59,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 681 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-21 02:27:59,107 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:27:59,115 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:27:59,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 15 [2023-12-21 02:27:59,192 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:27:59,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 41 [2023-12-21 02:27:59,200 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:27:59,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 63 treesize of output 72 [2023-12-21 02:27:59,239 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:27:59,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 80 treesize of output 88 [2023-12-21 02:27:59,363 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:27:59,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 105 treesize of output 41 [2023-12-21 02:27:59,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 1543 trivial. 0 not checked. [2023-12-21 02:27:59,393 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:27:59,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034102114] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:27:59,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 02:27:59,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15] total 22 [2023-12-21 02:27:59,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755304400] [2023-12-21 02:27:59,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:27:59,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 02:27:59,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:27:59,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 02:27:59,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2023-12-21 02:27:59,394 INFO L87 Difference]: Start difference. First operand 1253 states and 1480 transitions. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-21 02:28:00,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:28:00,252 INFO L93 Difference]: Finished difference Result 2500 states and 2918 transitions. [2023-12-21 02:28:00,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 02:28:00,253 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 229 [2023-12-21 02:28:00,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:28:00,255 INFO L225 Difference]: With dead ends: 2500 [2023-12-21 02:28:00,255 INFO L226 Difference]: Without dead ends: 1644 [2023-12-21 02:28:00,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2023-12-21 02:28:00,257 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 229 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 02:28:00,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 499 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 02:28:00,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1644 states. [2023-12-21 02:28:00,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1644 to 1240. [2023-12-21 02:28:00,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1124 states have (on average 1.152135231316726) internal successors, (1295), 1129 states have internal predecessors, (1295), 84 states have call successors, (84), 31 states have call predecessors, (84), 31 states have return successors, (84), 79 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-21 02:28:00,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1463 transitions. [2023-12-21 02:28:00,469 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1463 transitions. Word has length 229 [2023-12-21 02:28:00,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:28:00,469 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1463 transitions. [2023-12-21 02:28:00,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-21 02:28:00,469 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1463 transitions. [2023-12-21 02:28:00,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2023-12-21 02:28:00,471 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:28:00,471 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:28:00,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-21 02:28:00,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2023-12-21 02:28:00,672 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:28:00,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:28:00,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1720734295, now seen corresponding path program 1 times [2023-12-21 02:28:00,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:28:00,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611566693] [2023-12-21 02:28:00,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:28:00,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:28:00,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:02,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:28:02,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:02,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:28:02,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:02,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:28:02,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:02,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:28:02,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:02,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:28:02,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:02,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:28:02,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:02,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:28:02,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:02,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:28:02,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:02,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:28:02,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:02,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:28:02,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:02,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:28:02,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:02,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:28:02,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:02,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:28:02,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:02,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:28:02,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:02,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 02:28:02,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:02,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-21 02:28:02,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:02,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-21 02:28:02,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:02,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-21 02:28:02,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:02,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-21 02:28:02,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:02,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-12-21 02:28:02,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:02,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-21 02:28:02,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:02,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-21 02:28:03,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:03,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-21 02:28:03,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:03,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-12-21 02:28:03,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:03,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-12-21 02:28:03,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:03,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-12-21 02:28:03,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:03,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2023-12-21 02:28:03,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:03,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2023-12-21 02:28:03,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:03,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 47 proven. 5 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-12-21 02:28:03,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:28:03,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611566693] [2023-12-21 02:28:03,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611566693] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 02:28:03,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112240804] [2023-12-21 02:28:03,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:28:03,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:28:03,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:28:03,011 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 02:28:03,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-21 02:28:03,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:03,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 692 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-21 02:28:03,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:28:03,326 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:28:03,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 15 [2023-12-21 02:28:03,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2023-12-21 02:28:03,461 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:28:03,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 56 treesize of output 58 [2023-12-21 02:28:03,509 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:28:03,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 75 treesize of output 74 [2023-12-21 02:28:03,675 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:28:03,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 91 treesize of output 33 [2023-12-21 02:28:03,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 33 proven. 69 refuted. 0 times theorem prover too weak. 1462 trivial. 0 not checked. [2023-12-21 02:28:03,791 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 02:28:04,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 1543 trivial. 0 not checked. [2023-12-21 02:28:04,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112240804] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-21 02:28:04,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-21 02:28:04,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [23, 16] total 39 [2023-12-21 02:28:04,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72776937] [2023-12-21 02:28:04,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:28:04,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 02:28:04,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:28:04,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 02:28:04,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1373, Unknown=0, NotChecked=0, Total=1482 [2023-12-21 02:28:04,041 INFO L87 Difference]: Start difference. First operand 1240 states and 1463 transitions. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-21 02:28:05,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:28:05,182 INFO L93 Difference]: Finished difference Result 2399 states and 2801 transitions. [2023-12-21 02:28:05,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-21 02:28:05,183 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 231 [2023-12-21 02:28:05,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:28:05,185 INFO L225 Difference]: With dead ends: 2399 [2023-12-21 02:28:05,185 INFO L226 Difference]: Without dead ends: 1556 [2023-12-21 02:28:05,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 578 GetRequests, 520 SyntacticMatches, 7 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=234, Invalid=2522, Unknown=0, NotChecked=0, Total=2756 [2023-12-21 02:28:05,187 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 254 mSDsluCounter, 1098 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 1245 SdHoareTripleChecker+Invalid, 929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 02:28:05,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 1245 Invalid, 929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 02:28:05,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1556 states. [2023-12-21 02:28:05,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1556 to 1436. [2023-12-21 02:28:05,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1436 states, 1276 states have (on average 1.1387147335423198) internal successors, (1453), 1285 states have internal predecessors, (1453), 116 states have call successors, (116), 43 states have call predecessors, (116), 43 states have return successors, (116), 107 states have call predecessors, (116), 116 states have call successors, (116) [2023-12-21 02:28:05,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 1685 transitions. [2023-12-21 02:28:05,518 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 1685 transitions. Word has length 231 [2023-12-21 02:28:05,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:28:05,518 INFO L495 AbstractCegarLoop]: Abstraction has 1436 states and 1685 transitions. [2023-12-21 02:28:05,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-21 02:28:05,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 1685 transitions. [2023-12-21 02:28:05,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2023-12-21 02:28:05,520 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:28:05,520 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:28:05,528 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-21 02:28:05,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable70 [2023-12-21 02:28:05,727 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:28:05,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:28:05,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1317588195, now seen corresponding path program 1 times [2023-12-21 02:28:05,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:28:05,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745384454] [2023-12-21 02:28:05,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:28:05,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:28:05,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:06,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:28:06,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:06,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:28:06,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:06,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:28:06,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:06,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:28:06,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:06,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:28:06,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:06,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:28:06,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:06,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:28:06,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:06,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:28:06,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:06,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:28:06,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:06,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:28:06,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:06,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:28:06,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:06,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:28:06,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:06,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:28:06,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:06,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:28:06,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:06,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 02:28:06,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:06,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-21 02:28:06,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:06,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-21 02:28:06,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:06,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-21 02:28:06,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:06,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-21 02:28:06,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:06,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-12-21 02:28:06,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:06,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-21 02:28:06,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:06,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-21 02:28:06,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:06,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-21 02:28:06,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:06,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-12-21 02:28:06,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:06,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-12-21 02:28:06,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:06,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-12-21 02:28:06,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:06,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2023-12-21 02:28:06,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:06,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2023-12-21 02:28:06,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:06,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 1540 trivial. 0 not checked. [2023-12-21 02:28:06,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:28:06,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745384454] [2023-12-21 02:28:06,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745384454] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:28:06,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:28:06,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 02:28:06,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377981035] [2023-12-21 02:28:06,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:28:06,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 02:28:06,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:28:06,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 02:28:06,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-21 02:28:06,962 INFO L87 Difference]: Start difference. First operand 1436 states and 1685 transitions. Second operand has 10 states, 7 states have (on average 11.571428571428571) internal successors, (81), 10 states have internal predecessors, (81), 4 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 4 states have call successors, (17) [2023-12-21 02:28:08,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:28:08,307 INFO L93 Difference]: Finished difference Result 2748 states and 3187 transitions. [2023-12-21 02:28:08,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 02:28:08,308 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 11.571428571428571) internal successors, (81), 10 states have internal predecessors, (81), 4 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 4 states have call successors, (17) Word has length 231 [2023-12-21 02:28:08,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:28:08,310 INFO L225 Difference]: With dead ends: 2748 [2023-12-21 02:28:08,311 INFO L226 Difference]: Without dead ends: 1687 [2023-12-21 02:28:08,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-12-21 02:28:08,312 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 151 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 896 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 02:28:08,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 656 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 896 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 02:28:08,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1687 states. [2023-12-21 02:28:08,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1687 to 1473. [2023-12-21 02:28:08,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1473 states, 1304 states have (on average 1.133435582822086) internal successors, (1478), 1314 states have internal predecessors, (1478), 122 states have call successors, (122), 46 states have call predecessors, (122), 46 states have return successors, (122), 112 states have call predecessors, (122), 122 states have call successors, (122) [2023-12-21 02:28:08,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1473 states to 1473 states and 1722 transitions. [2023-12-21 02:28:08,693 INFO L78 Accepts]: Start accepts. Automaton has 1473 states and 1722 transitions. Word has length 231 [2023-12-21 02:28:08,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:28:08,693 INFO L495 AbstractCegarLoop]: Abstraction has 1473 states and 1722 transitions. [2023-12-21 02:28:08,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 11.571428571428571) internal successors, (81), 10 states have internal predecessors, (81), 4 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 4 states have call successors, (17) [2023-12-21 02:28:08,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1473 states and 1722 transitions. [2023-12-21 02:28:08,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2023-12-21 02:28:08,696 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:28:08,696 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:28:08,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2023-12-21 02:28:08,696 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:28:08,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:28:08,696 INFO L85 PathProgramCache]: Analyzing trace with hash 496074703, now seen corresponding path program 1 times [2023-12-21 02:28:08,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:28:08,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848092976] [2023-12-21 02:28:08,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:28:08,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:28:08,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:09,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:28:09,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:09,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:28:09,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:09,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:28:09,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:09,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:28:09,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:09,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:28:09,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:09,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:28:09,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:09,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:28:09,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:09,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:28:09,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:09,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:28:09,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:09,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:28:09,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:09,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:28:09,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:09,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:28:09,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:09,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:28:09,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:09,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:28:09,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:09,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 02:28:09,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:09,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-21 02:28:09,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:09,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-21 02:28:09,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:09,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-21 02:28:09,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:09,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-21 02:28:09,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:09,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-21 02:28:09,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:09,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-12-21 02:28:09,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:09,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-12-21 02:28:09,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:09,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-12-21 02:28:09,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:09,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2023-12-21 02:28:09,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:09,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2023-12-21 02:28:09,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:09,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2023-12-21 02:28:09,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:09,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2023-12-21 02:28:09,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:09,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-21 02:28:09,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:09,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 1539 trivial. 0 not checked. [2023-12-21 02:28:09,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:28:09,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848092976] [2023-12-21 02:28:09,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848092976] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:28:09,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:28:09,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 02:28:09,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472402554] [2023-12-21 02:28:09,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:28:09,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 02:28:09,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:28:09,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 02:28:09,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-12-21 02:28:09,859 INFO L87 Difference]: Start difference. First operand 1473 states and 1722 transitions. Second operand has 12 states, 10 states have (on average 8.5) internal successors, (85), 12 states have internal predecessors, (85), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-21 02:28:11,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:28:11,349 INFO L93 Difference]: Finished difference Result 2781 states and 3221 transitions. [2023-12-21 02:28:11,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 02:28:11,350 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 8.5) internal successors, (85), 12 states have internal predecessors, (85), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) Word has length 234 [2023-12-21 02:28:11,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:28:11,351 INFO L225 Difference]: With dead ends: 2781 [2023-12-21 02:28:11,352 INFO L226 Difference]: Without dead ends: 1667 [2023-12-21 02:28:11,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2023-12-21 02:28:11,353 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 195 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 1252 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 1332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 02:28:11,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 771 Invalid, 1332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1252 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 02:28:11,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1667 states. [2023-12-21 02:28:11,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1667 to 1536. [2023-12-21 02:28:11,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1536 states, 1358 states have (on average 1.1251840942562592) internal successors, (1528), 1369 states have internal predecessors, (1528), 128 states have call successors, (128), 49 states have call predecessors, (128), 49 states have return successors, (128), 117 states have call predecessors, (128), 128 states have call successors, (128) [2023-12-21 02:28:11,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1536 states to 1536 states and 1784 transitions. [2023-12-21 02:28:11,748 INFO L78 Accepts]: Start accepts. Automaton has 1536 states and 1784 transitions. Word has length 234 [2023-12-21 02:28:11,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:28:11,748 INFO L495 AbstractCegarLoop]: Abstraction has 1536 states and 1784 transitions. [2023-12-21 02:28:11,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 8.5) internal successors, (85), 12 states have internal predecessors, (85), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-21 02:28:11,748 INFO L276 IsEmpty]: Start isEmpty. Operand 1536 states and 1784 transitions. [2023-12-21 02:28:11,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2023-12-21 02:28:11,750 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:28:11,751 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:28:11,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2023-12-21 02:28:11,751 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:28:11,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:28:11,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1868154709, now seen corresponding path program 1 times [2023-12-21 02:28:11,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:28:11,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128380806] [2023-12-21 02:28:11,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:28:11,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:28:11,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:13,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:28:13,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:13,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:28:13,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:13,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:28:13,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:13,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:28:13,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:13,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:28:13,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:13,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:28:13,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:13,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:28:13,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:13,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:28:13,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:13,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:28:13,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:13,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:28:13,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:13,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:28:13,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:13,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:28:13,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:13,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:28:13,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:13,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:28:13,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:13,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 02:28:13,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:13,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-21 02:28:13,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:13,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-21 02:28:13,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:13,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-21 02:28:13,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:13,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-21 02:28:13,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:13,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-21 02:28:13,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:13,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-12-21 02:28:13,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:13,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-12-21 02:28:13,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:13,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-12-21 02:28:13,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:13,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2023-12-21 02:28:13,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:13,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2023-12-21 02:28:13,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:13,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2023-12-21 02:28:13,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:13,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2023-12-21 02:28:13,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:13,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-21 02:28:13,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:28:13,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 1542 trivial. 0 not checked. [2023-12-21 02:28:13,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:28:13,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128380806] [2023-12-21 02:28:13,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128380806] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:28:13,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:28:13,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 02:28:13,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021255381] [2023-12-21 02:28:13,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:28:13,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 02:28:13,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:28:13,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 02:28:13,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 02:28:13,203 INFO L87 Difference]: Start difference. First operand 1536 states and 1784 transitions. Second operand has 7 states, 5 states have (on average 16.4) internal successors, (82), 7 states have internal predecessors, (82), 3 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 3 states have call successors, (15) [2023-12-21 02:28:13,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:28:13,950 INFO L93 Difference]: Finished difference Result 2719 states and 3124 transitions. [2023-12-21 02:28:13,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 02:28:13,951 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 16.4) internal successors, (82), 7 states have internal predecessors, (82), 3 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 3 states have call successors, (15) Word has length 234 [2023-12-21 02:28:13,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:28:13,951 INFO L225 Difference]: With dead ends: 2719 [2023-12-21 02:28:13,951 INFO L226 Difference]: Without dead ends: 0 [2023-12-21 02:28:13,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-21 02:28:13,954 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 95 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 02:28:13,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 343 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 02:28:13,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-21 02:28:13,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-21 02:28:13,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 02:28:13,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-21 02:28:13,954 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 234 [2023-12-21 02:28:13,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:28:13,954 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-21 02:28:13,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 16.4) internal successors, (82), 7 states have internal predecessors, (82), 3 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 3 states have call successors, (15) [2023-12-21 02:28:13,955 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-21 02:28:13,955 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-21 02:28:13,957 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 02:28:13,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2023-12-21 02:28:13,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. Received shutdown request... [2023-12-21 02:40:03,644 WARN L619 AbstractCegarLoop]: Verification canceled: while PolyPacSimplificationTermWalker was simplifying a ∨-15-25-9-7-8-12-9-12-9-10-9-10-9-10-9-10-8-10-7-10-6-10-6-10-6-10-5-10-5-10-5-10-5-9-5-9-5-9-5-9-5-9-5-5-3-5-3-5-2-3-2-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-67-25-9-9-8-12-9-12-9-10-9-10-9-10-9-10-8-10-7-10-6-10-6-10-6-10-5-10-5-10-5-10-5-9-5-9-5-9-5-9-5-9-5-5-3-5-3-5-2-3-2-3-1 context. [2023-12-21 02:40:03,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-21 02:40:03,663 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 02:40:03,679 INFO L257 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2023-12-21 02:40:03,681 INFO L158 Benchmark]: Toolchain (without parser) took 836577.53ms. Allocated memory was 195.0MB in the beginning and 1.0GB in the end (delta: 851.4MB). Free memory was 143.9MB in the beginning and 535.4MB in the end (delta: -391.4MB). Peak memory consumption was 461.2MB. Max. memory is 8.0GB. [2023-12-21 02:40:03,681 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 195.0MB. Free memory is still 152.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 02:40:03,681 INFO L158 Benchmark]: CACSL2BoogieTranslator took 253.15ms. Allocated memory is still 195.0MB. Free memory was 143.6MB in the beginning and 127.5MB in the end (delta: 16.1MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-21 02:40:03,681 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.44ms. Allocated memory is still 195.0MB. Free memory was 127.5MB in the beginning and 122.9MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-21 02:40:03,681 INFO L158 Benchmark]: Boogie Preprocessor took 100.59ms. Allocated memory is still 195.0MB. Free memory was 122.9MB in the beginning and 117.4MB in the end (delta: 5.5MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-21 02:40:03,681 INFO L158 Benchmark]: RCFGBuilder took 609.16ms. Allocated memory was 195.0MB in the beginning and 254.8MB in the end (delta: 59.8MB). Free memory was 117.4MB in the beginning and 198.4MB in the end (delta: -81.0MB). Peak memory consumption was 9.7MB. Max. memory is 8.0GB. [2023-12-21 02:40:03,681 INFO L158 Benchmark]: TraceAbstraction took 835536.95ms. Allocated memory was 254.8MB in the beginning and 1.0GB in the end (delta: 791.7MB). Free memory was 197.9MB in the beginning and 535.4MB in the end (delta: -337.5MB). Peak memory consumption was 454.7MB. Max. memory is 8.0GB. [2023-12-21 02:40:03,682 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 195.0MB. Free memory is still 152.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 253.15ms. Allocated memory is still 195.0MB. Free memory was 143.6MB in the beginning and 127.5MB in the end (delta: 16.1MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 71.44ms. Allocated memory is still 195.0MB. Free memory was 127.5MB in the beginning and 122.9MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 100.59ms. Allocated memory is still 195.0MB. Free memory was 122.9MB in the beginning and 117.4MB in the end (delta: 5.5MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 609.16ms. Allocated memory was 195.0MB in the beginning and 254.8MB in the end (delta: 59.8MB). Free memory was 117.4MB in the beginning and 198.4MB in the end (delta: -81.0MB). Peak memory consumption was 9.7MB. Max. memory is 8.0GB. * TraceAbstraction took 835536.95ms. Allocated memory was 254.8MB in the beginning and 1.0GB in the end (delta: 791.7MB). Free memory was 197.9MB in the beginning and 535.4MB in the end (delta: -337.5MB). Peak memory consumption was 454.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while PolyPacSimplificationTermWalker was simplifying a ∨-15-25-9-7-8-12-9-12-9-10-9-10-9-10-9-10-8-10-7-10-6-10-6-10-6-10-5-10-5-10-5-10-5-9-5-9-5-9-5-9-5-9-5-5-3-5-3-5-2-3-2-3-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-72-25-9-9-8-12-9-12-9-10-9-10-9-10-9-10-8-10-7-10-6-10-6-10-6-10-5-10-5-10-5-10-5-9-5-9-5-9-5-9-5-9-5-5-3-5-3-5-2-3-2-3-1 context. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown