/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/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 14:20:39,292 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 14:20:39,339 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 14:20:39,342 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 14:20:39,342 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 14:20:39,356 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 14:20:39,356 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 14:20:39,356 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 14:20:39,357 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 14:20:39,357 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 14:20:39,357 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 14:20:39,357 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 14:20:39,358 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 14:20:39,358 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 14:20:39,358 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 14:20:39,358 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 14:20:39,359 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 14:20:39,359 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 14:20:39,359 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 14:20:39,359 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 14:20:39,360 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 14:20:39,360 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 14:20:39,360 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 14:20:39,360 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 14:20:39,361 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 14:20:39,361 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 14:20:39,361 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 14:20:39,361 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 14:20:39,361 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 14:20:39,362 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 14:20:39,362 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 14:20:39,362 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 14:20:39,362 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 14:20:39,363 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 14:20:39,363 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 14:20:39,363 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 14:20:39,363 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 14:20:39,364 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 14:20:39,364 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 14:20:39,364 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 14:20:39,364 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 14:20:39,369 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 14:20:39,370 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 14:20:39,370 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 14:20:39,561 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 14:20:39,574 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 14:20:39,576 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 14:20:39,577 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 14:20:39,578 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 14:20:39,579 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2023-12-21 14:20:40,576 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 14:20:40,749 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 14:20:40,749 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2023-12-21 14:20:40,756 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f51175c0/9eeb45d61d28401c80ee3911df49befd/FLAG98c51690d [2023-12-21 14:20:40,767 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f51175c0/9eeb45d61d28401c80ee3911df49befd [2023-12-21 14:20:40,769 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 14:20:40,770 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 14:20:40,771 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 14:20:40,771 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 14:20:40,777 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 14:20:40,777 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:20:40" (1/1) ... [2023-12-21 14:20:40,778 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f15f631 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:20:40, skipping insertion in model container [2023-12-21 14:20:40,778 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:20:40" (1/1) ... [2023-12-21 14:20:40,806 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 14:20:40,979 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[7806,7819] [2023-12-21 14:20:41,012 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 14:20:41,029 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 14:20:41,070 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[7806,7819] [2023-12-21 14:20:41,087 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 14:20:41,111 INFO L206 MainTranslator]: Completed translation [2023-12-21 14:20:41,111 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:20:41 WrapperNode [2023-12-21 14:20:41,111 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 14:20:41,112 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 14:20:41,112 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 14:20:41,112 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 14:20:41,119 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:20:41" (1/1) ... [2023-12-21 14:20:41,139 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:20:41" (1/1) ... [2023-12-21 14:20:41,171 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 675 [2023-12-21 14:20:41,172 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 14:20:41,172 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 14:20:41,172 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 14:20:41,173 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 14:20:41,186 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:20:41" (1/1) ... [2023-12-21 14:20:41,186 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:20:41" (1/1) ... [2023-12-21 14:20:41,189 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:20:41" (1/1) ... [2023-12-21 14:20:41,200 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-21 14:20:41,201 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:20:41" (1/1) ... [2023-12-21 14:20:41,201 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:20:41" (1/1) ... [2023-12-21 14:20:41,208 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:20:41" (1/1) ... [2023-12-21 14:20:41,211 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:20:41" (1/1) ... [2023-12-21 14:20:41,212 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:20:41" (1/1) ... [2023-12-21 14:20:41,214 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:20:41" (1/1) ... [2023-12-21 14:20:41,217 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 14:20:41,218 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 14:20:41,218 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 14:20:41,218 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 14:20:41,218 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:20:41" (1/1) ... [2023-12-21 14:20:41,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 14:20:41,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 14:20:41,241 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 14:20:41,270 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 14:20:41,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 14:20:41,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 14:20:41,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 14:20:41,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 14:20:41,404 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 14:20:41,406 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 14:20:41,855 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 14:20:41,882 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 14:20:41,883 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-21 14:20:41,883 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:20:41 BoogieIcfgContainer [2023-12-21 14:20:41,883 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 14:20:41,884 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 14:20:41,884 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 14:20:41,886 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 14:20:41,886 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 02:20:40" (1/3) ... [2023-12-21 14:20:41,887 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@268ea524 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:20:41, skipping insertion in model container [2023-12-21 14:20:41,887 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:20:41" (2/3) ... [2023-12-21 14:20:41,887 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@268ea524 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:20:41, skipping insertion in model container [2023-12-21 14:20:41,887 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:20:41" (3/3) ... [2023-12-21 14:20:41,889 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2023-12-21 14:20:41,900 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 14:20:41,900 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 14:20:41,934 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 14:20:41,938 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;@2d7e2a69, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 14:20:41,938 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 14:20:41,941 INFO L276 IsEmpty]: Start isEmpty. Operand has 147 states, 145 states have (on average 1.7724137931034483) internal successors, (257), 146 states have internal predecessors, (257), 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 14:20:41,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-21 14:20:41,947 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:20:41,947 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:20:41,948 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:20:41,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:20:41,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1865519982, now seen corresponding path program 1 times [2023-12-21 14:20:41,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:20:41,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850774221] [2023-12-21 14:20:41,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:20:41,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:20:42,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:20:42,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:20:42,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:20:42,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850774221] [2023-12-21 14:20:42,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850774221] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:20:42,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:20:42,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:20:42,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991564500] [2023-12-21 14:20:42,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:20:42,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:20:42,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:20:42,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:20:42,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:20:42,303 INFO L87 Difference]: Start difference. First operand has 147 states, 145 states have (on average 1.7724137931034483) internal successors, (257), 146 states have internal predecessors, (257), 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) Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 14:20:42,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:20:42,375 INFO L93 Difference]: Finished difference Result 319 states and 543 transitions. [2023-12-21 14:20:42,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:20:42,381 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) Word has length 61 [2023-12-21 14:20:42,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:20:42,390 INFO L225 Difference]: With dead ends: 319 [2023-12-21 14:20:42,390 INFO L226 Difference]: Without dead ends: 224 [2023-12-21 14:20:42,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 14:20:42,394 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 149 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:20:42,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 444 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:20:42,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-12-21 14:20:42,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 222. [2023-12-21 14:20:42,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 221 states have (on average 1.5746606334841629) internal successors, (348), 221 states have internal predecessors, (348), 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 14:20:42,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 348 transitions. [2023-12-21 14:20:42,428 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 348 transitions. Word has length 61 [2023-12-21 14:20:42,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:20:42,428 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 348 transitions. [2023-12-21 14:20:42,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 14:20:42,429 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 348 transitions. [2023-12-21 14:20:42,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-21 14:20:42,431 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:20:42,431 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:20:42,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 14:20:42,431 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:20:42,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:20:42,432 INFO L85 PathProgramCache]: Analyzing trace with hash 152055503, now seen corresponding path program 1 times [2023-12-21 14:20:42,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:20:42,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914937453] [2023-12-21 14:20:42,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:20:42,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:20:42,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:20:42,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:20:42,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:20:42,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914937453] [2023-12-21 14:20:42,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914937453] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:20:42,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:20:42,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:20:42,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410934972] [2023-12-21 14:20:42,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:20:42,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:20:42,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:20:42,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:20:42,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:20:42,555 INFO L87 Difference]: Start difference. First operand 222 states and 348 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 14:20:42,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:20:42,586 INFO L93 Difference]: Finished difference Result 538 states and 868 transitions. [2023-12-21 14:20:42,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:20:42,587 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) Word has length 63 [2023-12-21 14:20:42,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:20:42,590 INFO L225 Difference]: With dead ends: 538 [2023-12-21 14:20:42,590 INFO L226 Difference]: Without dead ends: 372 [2023-12-21 14:20:42,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 14:20:42,591 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 125 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:20:42,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 413 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:20:42,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2023-12-21 14:20:42,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 370. [2023-12-21 14:20:42,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 369 states have (on average 1.6016260162601625) internal successors, (591), 369 states have internal predecessors, (591), 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 14:20:42,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 591 transitions. [2023-12-21 14:20:42,610 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 591 transitions. Word has length 63 [2023-12-21 14:20:42,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:20:42,611 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 591 transitions. [2023-12-21 14:20:42,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 14:20:42,611 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 591 transitions. [2023-12-21 14:20:42,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-21 14:20:42,624 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:20:42,624 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:20:42,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 14:20:42,625 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:20:42,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:20:42,626 INFO L85 PathProgramCache]: Analyzing trace with hash 2126698160, now seen corresponding path program 1 times [2023-12-21 14:20:42,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:20:42,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571709153] [2023-12-21 14:20:42,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:20:42,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:20:42,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:20:42,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:20:42,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:20:42,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571709153] [2023-12-21 14:20:42,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571709153] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:20:42,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:20:42,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:20:42,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222108592] [2023-12-21 14:20:42,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:20:42,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:20:42,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:20:42,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:20:42,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:20:42,764 INFO L87 Difference]: Start difference. First operand 370 states and 591 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 14:20:42,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:20:42,783 INFO L93 Difference]: Finished difference Result 966 states and 1569 transitions. [2023-12-21 14:20:42,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:20:42,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) Word has length 65 [2023-12-21 14:20:42,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:20:42,788 INFO L225 Difference]: With dead ends: 966 [2023-12-21 14:20:42,788 INFO L226 Difference]: Without dead ends: 652 [2023-12-21 14:20:42,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 14:20:42,795 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 119 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:20:42,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 414 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:20:42,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2023-12-21 14:20:42,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 650. [2023-12-21 14:20:42,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 649 states have (on average 1.613251155624037) internal successors, (1047), 649 states have internal predecessors, (1047), 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 14:20:42,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 1047 transitions. [2023-12-21 14:20:42,828 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 1047 transitions. Word has length 65 [2023-12-21 14:20:42,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:20:42,831 INFO L495 AbstractCegarLoop]: Abstraction has 650 states and 1047 transitions. [2023-12-21 14:20:42,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 14:20:42,835 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 1047 transitions. [2023-12-21 14:20:42,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-21 14:20:42,837 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:20:42,837 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:20:42,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 14:20:42,838 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:20:42,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:20:42,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1914747537, now seen corresponding path program 1 times [2023-12-21 14:20:42,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:20:42,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886324798] [2023-12-21 14:20:42,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:20:42,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:20:42,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:20:42,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:20:42,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:20:42,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886324798] [2023-12-21 14:20:42,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886324798] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:20:42,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:20:42,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 14:20:42,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142207794] [2023-12-21 14:20:42,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:20:42,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:20:42,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:20:42,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:20:42,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:20:42,983 INFO L87 Difference]: Start difference. First operand 650 states and 1047 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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 14:20:43,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:20:43,108 INFO L93 Difference]: Finished difference Result 2806 states and 4617 transitions. [2023-12-21 14:20:43,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 14:20:43,109 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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) Word has length 67 [2023-12-21 14:20:43,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:20:43,117 INFO L225 Difference]: With dead ends: 2806 [2023-12-21 14:20:43,117 INFO L226 Difference]: Without dead ends: 2212 [2023-12-21 14:20:43,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 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 14:20:43,123 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 857 mSDsluCounter, 1398 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:20:43,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 1615 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:20:43,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2212 states. [2023-12-21 14:20:43,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2212 to 1169. [2023-12-21 14:20:43,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1169 states, 1168 states have (on average 1.6241438356164384) internal successors, (1897), 1168 states have internal predecessors, (1897), 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 14:20:43,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1169 states to 1169 states and 1897 transitions. [2023-12-21 14:20:43,154 INFO L78 Accepts]: Start accepts. Automaton has 1169 states and 1897 transitions. Word has length 67 [2023-12-21 14:20:43,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:20:43,154 INFO L495 AbstractCegarLoop]: Abstraction has 1169 states and 1897 transitions. [2023-12-21 14:20:43,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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 14:20:43,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1169 states and 1897 transitions. [2023-12-21 14:20:43,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-21 14:20:43,155 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:20:43,155 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:20:43,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 14:20:43,156 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:20:43,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:20:43,156 INFO L85 PathProgramCache]: Analyzing trace with hash -834872683, now seen corresponding path program 1 times [2023-12-21 14:20:43,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:20:43,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42648217] [2023-12-21 14:20:43,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:20:43,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:20:43,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:20:43,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:20:43,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:20:43,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42648217] [2023-12-21 14:20:43,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42648217] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:20:43,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:20:43,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:20:43,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155674789] [2023-12-21 14:20:43,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:20:43,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 14:20:43,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:20:43,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 14:20:43,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:20:43,245 INFO L87 Difference]: Start difference. First operand 1169 states and 1897 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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 14:20:43,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:20:43,300 INFO L93 Difference]: Finished difference Result 3408 states and 5598 transitions. [2023-12-21 14:20:43,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 14:20:43,300 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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) Word has length 68 [2023-12-21 14:20:43,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:20:43,307 INFO L225 Difference]: With dead ends: 3408 [2023-12-21 14:20:43,308 INFO L226 Difference]: Without dead ends: 2295 [2023-12-21 14:20:43,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 14:20:43,310 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 430 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:20:43,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [430 Valid, 753 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:20:43,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2295 states. [2023-12-21 14:20:43,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2295 to 1723. [2023-12-21 14:20:43,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1723 states, 1722 states have (on average 1.6300813008130082) internal successors, (2807), 1722 states have internal predecessors, (2807), 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 14:20:43,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1723 states to 1723 states and 2807 transitions. [2023-12-21 14:20:43,357 INFO L78 Accepts]: Start accepts. Automaton has 1723 states and 2807 transitions. Word has length 68 [2023-12-21 14:20:43,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:20:43,357 INFO L495 AbstractCegarLoop]: Abstraction has 1723 states and 2807 transitions. [2023-12-21 14:20:43,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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 14:20:43,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1723 states and 2807 transitions. [2023-12-21 14:20:43,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-21 14:20:43,358 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:20:43,358 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:20:43,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 14:20:43,358 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:20:43,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:20:43,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1554445324, now seen corresponding path program 1 times [2023-12-21 14:20:43,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:20:43,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502576843] [2023-12-21 14:20:43,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:20:43,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:20:43,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:20:43,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:20:43,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:20:43,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502576843] [2023-12-21 14:20:43,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502576843] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:20:43,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:20:43,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:20:43,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587635548] [2023-12-21 14:20:43,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:20:43,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:20:43,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:20:43,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:20:43,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:20:43,393 INFO L87 Difference]: Start difference. First operand 1723 states and 2807 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 14:20:43,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:20:43,413 INFO L93 Difference]: Finished difference Result 3778 states and 6217 transitions. [2023-12-21 14:20:43,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:20:43,414 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) Word has length 69 [2023-12-21 14:20:43,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:20:43,420 INFO L225 Difference]: With dead ends: 3778 [2023-12-21 14:20:43,420 INFO L226 Difference]: Without dead ends: 2590 [2023-12-21 14:20:43,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 14:20:43,422 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 132 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:20:43,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 510 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:20:43,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2590 states. [2023-12-21 14:20:43,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2590 to 2588. [2023-12-21 14:20:43,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2588 states, 2587 states have (on average 1.6335523772709701) internal successors, (4226), 2587 states have internal predecessors, (4226), 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 14:20:43,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2588 states to 2588 states and 4226 transitions. [2023-12-21 14:20:43,469 INFO L78 Accepts]: Start accepts. Automaton has 2588 states and 4226 transitions. Word has length 69 [2023-12-21 14:20:43,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:20:43,469 INFO L495 AbstractCegarLoop]: Abstraction has 2588 states and 4226 transitions. [2023-12-21 14:20:43,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 14:20:43,470 INFO L276 IsEmpty]: Start isEmpty. Operand 2588 states and 4226 transitions. [2023-12-21 14:20:43,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-21 14:20:43,470 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:20:43,470 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:20:43,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 14:20:43,470 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:20:43,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:20:43,471 INFO L85 PathProgramCache]: Analyzing trace with hash 867555242, now seen corresponding path program 1 times [2023-12-21 14:20:43,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:20:43,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118854537] [2023-12-21 14:20:43,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:20:43,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:20:43,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:20:43,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:20:43,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:20:43,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118854537] [2023-12-21 14:20:43,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118854537] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:20:43,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:20:43,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:20:43,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431963884] [2023-12-21 14:20:43,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:20:43,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:20:43,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:20:43,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:20:43,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:20:43,506 INFO L87 Difference]: Start difference. First operand 2588 states and 4226 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 14:20:43,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:20:43,531 INFO L93 Difference]: Finished difference Result 5032 states and 8245 transitions. [2023-12-21 14:20:43,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:20:43,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) Word has length 69 [2023-12-21 14:20:43,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:20:43,542 INFO L225 Difference]: With dead ends: 5032 [2023-12-21 14:20:43,542 INFO L226 Difference]: Without dead ends: 3598 [2023-12-21 14:20:43,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 14:20:43,547 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 126 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:20:43,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 496 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:20:43,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3598 states. [2023-12-21 14:20:43,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3598 to 3596. [2023-12-21 14:20:43,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3596 states, 3595 states have (on average 1.6289290681502087) internal successors, (5856), 3595 states have internal predecessors, (5856), 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 14:20:43,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3596 states to 3596 states and 5856 transitions. [2023-12-21 14:20:43,605 INFO L78 Accepts]: Start accepts. Automaton has 3596 states and 5856 transitions. Word has length 69 [2023-12-21 14:20:43,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:20:43,605 INFO L495 AbstractCegarLoop]: Abstraction has 3596 states and 5856 transitions. [2023-12-21 14:20:43,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 14:20:43,605 INFO L276 IsEmpty]: Start isEmpty. Operand 3596 states and 5856 transitions. [2023-12-21 14:20:43,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-21 14:20:43,606 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:20:43,606 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:20:43,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 14:20:43,606 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:20:43,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:20:43,607 INFO L85 PathProgramCache]: Analyzing trace with hash -169195560, now seen corresponding path program 1 times [2023-12-21 14:20:43,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:20:43,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107967030] [2023-12-21 14:20:43,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:20:43,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:20:43,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:20:43,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:20:43,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:20:43,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107967030] [2023-12-21 14:20:43,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107967030] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:20:43,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:20:43,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:20:43,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767730912] [2023-12-21 14:20:43,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:20:43,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 14:20:43,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:20:43,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 14:20:43,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:20:43,677 INFO L87 Difference]: Start difference. First operand 3596 states and 5856 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 14:20:43,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:20:43,793 INFO L93 Difference]: Finished difference Result 11302 states and 18474 transitions. [2023-12-21 14:20:43,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 14:20:43,793 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) Word has length 69 [2023-12-21 14:20:43,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:20:43,815 INFO L225 Difference]: With dead ends: 11302 [2023-12-21 14:20:43,815 INFO L226 Difference]: Without dead ends: 7780 [2023-12-21 14:20:43,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 14:20:43,822 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 429 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:20:43,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 745 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:20:43,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7780 states. [2023-12-21 14:20:43,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7780 to 5669. [2023-12-21 14:20:43,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5669 states, 5668 states have (on average 1.6233239237826393) internal successors, (9201), 5668 states have internal predecessors, (9201), 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 14:20:43,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5669 states to 5669 states and 9201 transitions. [2023-12-21 14:20:43,934 INFO L78 Accepts]: Start accepts. Automaton has 5669 states and 9201 transitions. Word has length 69 [2023-12-21 14:20:43,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:20:43,934 INFO L495 AbstractCegarLoop]: Abstraction has 5669 states and 9201 transitions. [2023-12-21 14:20:43,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 14:20:43,935 INFO L276 IsEmpty]: Start isEmpty. Operand 5669 states and 9201 transitions. [2023-12-21 14:20:43,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-21 14:20:43,935 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:20:43,935 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:20:43,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 14:20:43,935 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:20:43,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:20:43,936 INFO L85 PathProgramCache]: Analyzing trace with hash -73418808, now seen corresponding path program 1 times [2023-12-21 14:20:43,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:20:43,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566926041] [2023-12-21 14:20:43,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:20:43,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:20:43,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:20:43,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:20:43,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:20:43,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566926041] [2023-12-21 14:20:43,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566926041] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:20:43,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:20:43,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:20:43,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213647475] [2023-12-21 14:20:43,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:20:43,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:20:43,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:20:43,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:20:43,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:20:43,975 INFO L87 Difference]: Start difference. First operand 5669 states and 9201 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 14:20:44,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:20:44,014 INFO L93 Difference]: Finished difference Result 11089 states and 18038 transitions. [2023-12-21 14:20:44,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:20:44,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) Word has length 69 [2023-12-21 14:20:44,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:20:44,046 INFO L225 Difference]: With dead ends: 11089 [2023-12-21 14:20:44,046 INFO L226 Difference]: Without dead ends: 7837 [2023-12-21 14:20:44,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 14:20:44,054 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 120 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:20:44,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 473 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:20:44,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7837 states. [2023-12-21 14:20:44,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7837 to 7835. [2023-12-21 14:20:44,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7835 states, 7834 states have (on average 1.6153944345162115) internal successors, (12655), 7834 states have internal predecessors, (12655), 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 14:20:44,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7835 states to 7835 states and 12655 transitions. [2023-12-21 14:20:44,232 INFO L78 Accepts]: Start accepts. Automaton has 7835 states and 12655 transitions. Word has length 69 [2023-12-21 14:20:44,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:20:44,232 INFO L495 AbstractCegarLoop]: Abstraction has 7835 states and 12655 transitions. [2023-12-21 14:20:44,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 14:20:44,232 INFO L276 IsEmpty]: Start isEmpty. Operand 7835 states and 12655 transitions. [2023-12-21 14:20:44,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-21 14:20:44,233 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:20:44,233 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:20:44,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 14:20:44,233 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:20:44,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:20:44,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1003483204, now seen corresponding path program 1 times [2023-12-21 14:20:44,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:20:44,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839981914] [2023-12-21 14:20:44,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:20:44,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:20:44,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:20:44,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:20:44,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:20:44,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839981914] [2023-12-21 14:20:44,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839981914] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:20:44,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:20:44,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:20:44,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422655274] [2023-12-21 14:20:44,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:20:44,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 14:20:44,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:20:44,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 14:20:44,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:20:44,306 INFO L87 Difference]: Start difference. First operand 7835 states and 12655 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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 14:20:44,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:20:44,409 INFO L93 Difference]: Finished difference Result 24464 states and 39612 transitions. [2023-12-21 14:20:44,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 14:20:44,410 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) Word has length 70 [2023-12-21 14:20:44,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:20:44,444 INFO L225 Difference]: With dead ends: 24464 [2023-12-21 14:20:44,445 INFO L226 Difference]: Without dead ends: 16719 [2023-12-21 14:20:44,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 14:20:44,460 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 427 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:20:44,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 747 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:20:44,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16719 states. [2023-12-21 14:20:44,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16719 to 12234. [2023-12-21 14:20:44,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12234 states, 12233 states have (on average 1.6072917518188508) internal successors, (19662), 12233 states have internal predecessors, (19662), 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 14:20:44,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12234 states to 12234 states and 19662 transitions. [2023-12-21 14:20:44,749 INFO L78 Accepts]: Start accepts. Automaton has 12234 states and 19662 transitions. Word has length 70 [2023-12-21 14:20:44,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:20:44,749 INFO L495 AbstractCegarLoop]: Abstraction has 12234 states and 19662 transitions. [2023-12-21 14:20:44,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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 14:20:44,750 INFO L276 IsEmpty]: Start isEmpty. Operand 12234 states and 19662 transitions. [2023-12-21 14:20:44,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-21 14:20:44,750 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:20:44,751 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:20:44,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 14:20:44,751 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:20:44,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:20:44,752 INFO L85 PathProgramCache]: Analyzing trace with hash 502971341, now seen corresponding path program 1 times [2023-12-21 14:20:44,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:20:44,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648721315] [2023-12-21 14:20:44,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:20:44,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:20:44,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:20:44,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:20:44,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:20:44,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648721315] [2023-12-21 14:20:44,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648721315] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:20:44,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:20:44,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 14:20:44,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038874994] [2023-12-21 14:20:44,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:20:44,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:20:44,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:20:44,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:20:44,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:20:44,887 INFO L87 Difference]: Start difference. First operand 12234 states and 19662 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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 14:20:44,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:20:44,997 INFO L93 Difference]: Finished difference Result 24380 states and 39201 transitions. [2023-12-21 14:20:44,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:20:44,998 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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) Word has length 72 [2023-12-21 14:20:44,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:20:45,084 INFO L225 Difference]: With dead ends: 24380 [2023-12-21 14:20:45,084 INFO L226 Difference]: Without dead ends: 12236 [2023-12-21 14:20:45,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-21 14:20:45,091 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 239 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:20:45,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 605 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:20:45,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12236 states. [2023-12-21 14:20:45,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12236 to 12234. [2023-12-21 14:20:45,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12234 states, 12233 states have (on average 1.597073489740865) internal successors, (19537), 12233 states have internal predecessors, (19537), 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 14:20:45,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12234 states to 12234 states and 19537 transitions. [2023-12-21 14:20:45,223 INFO L78 Accepts]: Start accepts. Automaton has 12234 states and 19537 transitions. Word has length 72 [2023-12-21 14:20:45,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:20:45,223 INFO L495 AbstractCegarLoop]: Abstraction has 12234 states and 19537 transitions. [2023-12-21 14:20:45,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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 14:20:45,224 INFO L276 IsEmpty]: Start isEmpty. Operand 12234 states and 19537 transitions. [2023-12-21 14:20:45,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-21 14:20:45,224 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:20:45,224 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:20:45,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 14:20:45,224 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:20:45,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:20:45,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1124745034, now seen corresponding path program 1 times [2023-12-21 14:20:45,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:20:45,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529742132] [2023-12-21 14:20:45,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:20:45,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:20:45,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:20:45,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:20:45,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:20:45,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529742132] [2023-12-21 14:20:45,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529742132] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:20:45,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:20:45,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 14:20:45,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390221035] [2023-12-21 14:20:45,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:20:45,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:20:45,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:20:45,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:20:45,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:20:45,469 INFO L87 Difference]: Start difference. First operand 12234 states and 19537 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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 14:20:45,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:20:45,584 INFO L93 Difference]: Finished difference Result 35012 states and 56061 transitions. [2023-12-21 14:20:45,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:20:45,585 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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) Word has length 75 [2023-12-21 14:20:45,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:20:45,667 INFO L225 Difference]: With dead ends: 35012 [2023-12-21 14:20:45,667 INFO L226 Difference]: Without dead ends: 22868 [2023-12-21 14:20:45,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-21 14:20:45,679 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 235 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:20:45,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 610 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:20:45,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22868 states. [2023-12-21 14:20:45,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22868 to 22866. [2023-12-21 14:20:45,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22866 states, 22865 states have (on average 1.5857424010496393) internal successors, (36258), 22865 states have internal predecessors, (36258), 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 14:20:46,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22866 states to 22866 states and 36258 transitions. [2023-12-21 14:20:46,027 INFO L78 Accepts]: Start accepts. Automaton has 22866 states and 36258 transitions. Word has length 75 [2023-12-21 14:20:46,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:20:46,028 INFO L495 AbstractCegarLoop]: Abstraction has 22866 states and 36258 transitions. [2023-12-21 14:20:46,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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 14:20:46,028 INFO L276 IsEmpty]: Start isEmpty. Operand 22866 states and 36258 transitions. [2023-12-21 14:20:46,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-21 14:20:46,028 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:20:46,028 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:20:46,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 14:20:46,028 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:20:46,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:20:46,029 INFO L85 PathProgramCache]: Analyzing trace with hash 505448394, now seen corresponding path program 1 times [2023-12-21 14:20:46,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:20:46,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137380900] [2023-12-21 14:20:46,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:20:46,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:20:46,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:20:46,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:20:46,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:20:46,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137380900] [2023-12-21 14:20:46,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137380900] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:20:46,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:20:46,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 14:20:46,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133343418] [2023-12-21 14:20:46,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:20:46,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:20:46,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:20:46,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:20:46,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:20:46,265 INFO L87 Difference]: Start difference. First operand 22866 states and 36258 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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 14:20:46,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:20:46,378 INFO L93 Difference]: Finished difference Result 43697 states and 68968 transitions. [2023-12-21 14:20:46,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 14:20:46,379 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) Word has length 76 [2023-12-21 14:20:46,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:20:46,450 INFO L225 Difference]: With dead ends: 43697 [2023-12-21 14:20:46,450 INFO L226 Difference]: Without dead ends: 43695 [2023-12-21 14:20:46,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 14:20:46,466 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 268 mSDsluCounter, 739 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 1045 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:20:46,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 1045 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:20:46,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43695 states. [2023-12-21 14:20:46,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43695 to 23590. [2023-12-21 14:20:46,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23590 states, 23589 states have (on average 1.567383102293442) internal successors, (36973), 23589 states have internal predecessors, (36973), 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 14:20:46,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23590 states to 23590 states and 36973 transitions. [2023-12-21 14:20:46,908 INFO L78 Accepts]: Start accepts. Automaton has 23590 states and 36973 transitions. Word has length 76 [2023-12-21 14:20:46,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:20:46,908 INFO L495 AbstractCegarLoop]: Abstraction has 23590 states and 36973 transitions. [2023-12-21 14:20:46,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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 14:20:46,909 INFO L276 IsEmpty]: Start isEmpty. Operand 23590 states and 36973 transitions. [2023-12-21 14:20:46,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-21 14:20:46,910 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:20:46,910 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:20:46,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 14:20:46,911 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:20:46,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:20:46,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1515871777, now seen corresponding path program 1 times [2023-12-21 14:20:46,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:20:46,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829863624] [2023-12-21 14:20:46,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:20:46,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:20:47,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:20:47,087 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 14:20:47,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:20:47,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829863624] [2023-12-21 14:20:47,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829863624] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:20:47,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:20:47,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 14:20:47,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331021099] [2023-12-21 14:20:47,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:20:47,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:20:47,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:20:47,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:20:47,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:20:47,089 INFO L87 Difference]: Start difference. First operand 23590 states and 36973 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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 14:20:47,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:20:47,280 INFO L93 Difference]: Finished difference Result 57666 states and 90689 transitions. [2023-12-21 14:20:47,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:20:47,281 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) Word has length 100 [2023-12-21 14:20:47,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:20:47,358 INFO L225 Difference]: With dead ends: 57666 [2023-12-21 14:20:47,358 INFO L226 Difference]: Without dead ends: 46304 [2023-12-21 14:20:47,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:20:47,384 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 551 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:20:47,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 1019 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:20:47,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46304 states. [2023-12-21 14:20:47,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46304 to 36198. [2023-12-21 14:20:47,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36198 states, 36197 states have (on average 1.5652402132773435) internal successors, (56657), 36197 states have internal predecessors, (56657), 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 14:20:47,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36198 states to 36198 states and 56657 transitions. [2023-12-21 14:20:47,911 INFO L78 Accepts]: Start accepts. Automaton has 36198 states and 56657 transitions. Word has length 100 [2023-12-21 14:20:47,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:20:47,912 INFO L495 AbstractCegarLoop]: Abstraction has 36198 states and 56657 transitions. [2023-12-21 14:20:47,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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 14:20:47,912 INFO L276 IsEmpty]: Start isEmpty. Operand 36198 states and 56657 transitions. [2023-12-21 14:20:47,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-21 14:20:47,914 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:20:47,914 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:20:47,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 14:20:47,915 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:20:47,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:20:47,915 INFO L85 PathProgramCache]: Analyzing trace with hash 2092205437, now seen corresponding path program 1 times [2023-12-21 14:20:47,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:20:47,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103021734] [2023-12-21 14:20:47,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:20:47,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:20:47,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:20:48,019 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 14:20:48,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:20:48,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103021734] [2023-12-21 14:20:48,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103021734] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:20:48,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:20:48,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 14:20:48,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485081014] [2023-12-21 14:20:48,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:20:48,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:20:48,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:20:48,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:20:48,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:20:48,021 INFO L87 Difference]: Start difference. First operand 36198 states and 56657 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 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 14:20:48,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:20:48,266 INFO L93 Difference]: Finished difference Result 64668 states and 101701 transitions. [2023-12-21 14:20:48,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:20:48,266 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 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) Word has length 100 [2023-12-21 14:20:48,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:20:48,362 INFO L225 Difference]: With dead ends: 64668 [2023-12-21 14:20:48,363 INFO L226 Difference]: Without dead ends: 53536 [2023-12-21 14:20:48,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:20:48,395 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 547 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 1059 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:20:48,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [547 Valid, 1059 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:20:48,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53536 states. [2023-12-21 14:20:49,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53536 to 49018. [2023-12-21 14:20:49,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49018 states, 49017 states have (on average 1.5666605463410654) internal successors, (76793), 49017 states have internal predecessors, (76793), 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 14:20:49,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49018 states to 49018 states and 76793 transitions. [2023-12-21 14:20:49,320 INFO L78 Accepts]: Start accepts. Automaton has 49018 states and 76793 transitions. Word has length 100 [2023-12-21 14:20:49,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:20:49,320 INFO L495 AbstractCegarLoop]: Abstraction has 49018 states and 76793 transitions. [2023-12-21 14:20:49,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 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 14:20:49,321 INFO L276 IsEmpty]: Start isEmpty. Operand 49018 states and 76793 transitions. [2023-12-21 14:20:49,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-21 14:20:49,322 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:20:49,323 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:20:49,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 14:20:49,323 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:20:49,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:20:49,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1151231387, now seen corresponding path program 1 times [2023-12-21 14:20:49,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:20:49,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966369610] [2023-12-21 14:20:49,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:20:49,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:20:49,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:20:49,615 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-21 14:20:49,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:20:49,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966369610] [2023-12-21 14:20:49,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966369610] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:20:49,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:20:49,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 14:20:49,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044885815] [2023-12-21 14:20:49,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:20:49,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:20:49,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:20:49,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:20:49,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:20:49,618 INFO L87 Difference]: Start difference. First operand 49018 states and 76793 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 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 14:20:49,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:20:49,967 INFO L93 Difference]: Finished difference Result 69088 states and 108649 transitions. [2023-12-21 14:20:49,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:20:49,968 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 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) Word has length 100 [2023-12-21 14:20:49,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:20:50,054 INFO L225 Difference]: With dead ends: 69088 [2023-12-21 14:20:50,054 INFO L226 Difference]: Without dead ends: 57956 [2023-12-21 14:20:50,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:20:50,071 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 558 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:20:50,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [558 Valid, 1022 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:20:50,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57956 states. [2023-12-21 14:20:50,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57956 to 56158. [2023-12-21 14:20:50,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56158 states, 56157 states have (on average 1.5682639742151467) internal successors, (88069), 56157 states have internal predecessors, (88069), 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 14:20:50,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56158 states to 56158 states and 88069 transitions. [2023-12-21 14:20:50,797 INFO L78 Accepts]: Start accepts. Automaton has 56158 states and 88069 transitions. Word has length 100 [2023-12-21 14:20:50,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:20:50,797 INFO L495 AbstractCegarLoop]: Abstraction has 56158 states and 88069 transitions. [2023-12-21 14:20:50,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 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 14:20:50,797 INFO L276 IsEmpty]: Start isEmpty. Operand 56158 states and 88069 transitions. [2023-12-21 14:20:50,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 14:20:50,799 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:20:50,799 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 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 14:20:50,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 14:20:50,799 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:20:50,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:20:50,800 INFO L85 PathProgramCache]: Analyzing trace with hash 190110983, now seen corresponding path program 1 times [2023-12-21 14:20:50,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:20:50,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048408879] [2023-12-21 14:20:50,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:20:50,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:20:50,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:20:50,864 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 14:20:50,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:20:50,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048408879] [2023-12-21 14:20:50,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048408879] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:20:50,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:20:50,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:20:50,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453618696] [2023-12-21 14:20:50,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:20:50,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 14:20:50,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:20:50,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 14:20:50,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:20:50,865 INFO L87 Difference]: Start difference. First operand 56158 states and 88069 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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 14:20:51,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:20:51,242 INFO L93 Difference]: Finished difference Result 91421 states and 144038 transitions. [2023-12-21 14:20:51,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 14:20:51,243 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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) Word has length 101 [2023-12-21 14:20:51,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:20:51,367 INFO L225 Difference]: With dead ends: 91421 [2023-12-21 14:20:51,368 INFO L226 Difference]: Without dead ends: 72827 [2023-12-21 14:20:51,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:20:51,401 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 241 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:20:51,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 767 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:20:51,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72827 states. [2023-12-21 14:20:52,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72827 to 71031. [2023-12-21 14:20:52,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71031 states, 71030 states have (on average 1.5684499507250458) internal successors, (111407), 71030 states have internal predecessors, (111407), 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 14:20:52,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71031 states to 71031 states and 111407 transitions. [2023-12-21 14:20:52,591 INFO L78 Accepts]: Start accepts. Automaton has 71031 states and 111407 transitions. Word has length 101 [2023-12-21 14:20:52,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:20:52,592 INFO L495 AbstractCegarLoop]: Abstraction has 71031 states and 111407 transitions. [2023-12-21 14:20:52,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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 14:20:52,592 INFO L276 IsEmpty]: Start isEmpty. Operand 71031 states and 111407 transitions. [2023-12-21 14:20:52,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 14:20:52,594 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:20:52,594 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 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 14:20:52,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 14:20:52,594 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:20:52,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:20:52,595 INFO L85 PathProgramCache]: Analyzing trace with hash -158576971, now seen corresponding path program 1 times [2023-12-21 14:20:52,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:20:52,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786859360] [2023-12-21 14:20:52,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:20:52,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:20:52,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:20:52,640 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 14:20:52,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:20:52,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786859360] [2023-12-21 14:20:52,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786859360] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:20:52,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:20:52,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:20:52,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028996981] [2023-12-21 14:20:52,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:20:52,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:20:52,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:20:52,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:20:52,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:20:52,642 INFO L87 Difference]: Start difference. First operand 71031 states and 111407 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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 14:20:53,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:20:53,169 INFO L93 Difference]: Finished difference Result 153123 states and 240887 transitions. [2023-12-21 14:20:53,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:20:53,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) Word has length 101 [2023-12-21 14:20:53,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:20:53,364 INFO L225 Difference]: With dead ends: 153123 [2023-12-21 14:20:53,364 INFO L226 Difference]: Without dead ends: 119825 [2023-12-21 14:20:53,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 14:20:53,413 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 110 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:20:53,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 403 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:20:53,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119825 states. [2023-12-21 14:20:54,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119825 to 119547. [2023-12-21 14:20:54,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119547 states, 119546 states have (on average 1.5682498787077777) internal successors, (187478), 119546 states have internal predecessors, (187478), 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 14:20:54,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119547 states to 119547 states and 187478 transitions. [2023-12-21 14:20:54,864 INFO L78 Accepts]: Start accepts. Automaton has 119547 states and 187478 transitions. Word has length 101 [2023-12-21 14:20:54,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:20:54,864 INFO L495 AbstractCegarLoop]: Abstraction has 119547 states and 187478 transitions. [2023-12-21 14:20:54,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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 14:20:54,864 INFO L276 IsEmpty]: Start isEmpty. Operand 119547 states and 187478 transitions. [2023-12-21 14:20:54,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-21 14:20:54,866 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:20:54,866 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:20:54,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 14:20:54,867 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:20:54,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:20:54,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1717689480, now seen corresponding path program 1 times [2023-12-21 14:20:54,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:20:54,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989322282] [2023-12-21 14:20:54,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:20:54,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:20:55,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:20:55,177 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:20:55,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:20:55,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989322282] [2023-12-21 14:20:55,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989322282] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:20:55,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:20:55,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:20:55,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156158171] [2023-12-21 14:20:55,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:20:55,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:20:55,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:20:55,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:20:55,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:20:55,179 INFO L87 Difference]: Start difference. First operand 119547 states and 187478 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 14:20:55,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:20:55,957 INFO L93 Difference]: Finished difference Result 220887 states and 346710 transitions. [2023-12-21 14:20:55,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:20:55,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) Word has length 102 [2023-12-21 14:20:55,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:20:56,154 INFO L225 Difference]: With dead ends: 220887 [2023-12-21 14:20:56,154 INFO L226 Difference]: Without dead ends: 101430 [2023-12-21 14:20:56,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 14:20:56,192 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 94 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:20:56,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 492 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:20:56,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101430 states. [2023-12-21 14:20:57,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101430 to 101200. [2023-12-21 14:20:57,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101200 states, 101199 states have (on average 1.5622782833822468) internal successors, (158101), 101199 states have internal predecessors, (158101), 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 14:20:57,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101200 states to 101200 states and 158101 transitions. [2023-12-21 14:20:57,664 INFO L78 Accepts]: Start accepts. Automaton has 101200 states and 158101 transitions. Word has length 102 [2023-12-21 14:20:57,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:20:57,664 INFO L495 AbstractCegarLoop]: Abstraction has 101200 states and 158101 transitions. [2023-12-21 14:20:57,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 14:20:57,665 INFO L276 IsEmpty]: Start isEmpty. Operand 101200 states and 158101 transitions. [2023-12-21 14:20:57,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-21 14:20:57,666 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:20:57,666 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:20:57,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 14:20:57,666 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:20:57,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:20:57,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1636303766, now seen corresponding path program 1 times [2023-12-21 14:20:57,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:20:57,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723719527] [2023-12-21 14:20:57,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:20:57,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:20:57,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:20:57,800 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:20:57,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:20:57,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723719527] [2023-12-21 14:20:57,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723719527] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:20:57,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:20:57,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:20:57,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861462251] [2023-12-21 14:20:57,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:20:57,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:20:57,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:20:57,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:20:57,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:20:57,802 INFO L87 Difference]: Start difference. First operand 101200 states and 158101 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 14:20:58,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:20:58,118 INFO L93 Difference]: Finished difference Result 143672 states and 224581 transitions. [2023-12-21 14:20:58,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:20:58,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) Word has length 102 [2023-12-21 14:20:58,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:20:58,168 INFO L225 Difference]: With dead ends: 143672 [2023-12-21 14:20:58,168 INFO L226 Difference]: Without dead ends: 42563 [2023-12-21 14:20:58,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 14:20:58,225 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 81 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:20:58,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 443 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:20:58,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42563 states. [2023-12-21 14:20:58,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42563 to 42493. [2023-12-21 14:20:58,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42493 states, 42492 states have (on average 1.5561046785277228) internal successors, (66122), 42492 states have internal predecessors, (66122), 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 14:20:58,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42493 states to 42493 states and 66122 transitions. [2023-12-21 14:20:58,993 INFO L78 Accepts]: Start accepts. Automaton has 42493 states and 66122 transitions. Word has length 102 [2023-12-21 14:20:58,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:20:58,993 INFO L495 AbstractCegarLoop]: Abstraction has 42493 states and 66122 transitions. [2023-12-21 14:20:58,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 14:20:58,994 INFO L276 IsEmpty]: Start isEmpty. Operand 42493 states and 66122 transitions. [2023-12-21 14:20:58,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-21 14:20:58,995 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:20:58,995 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:20:58,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 14:20:58,995 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:20:58,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:20:58,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1335068748, now seen corresponding path program 1 times [2023-12-21 14:20:58,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:20:58,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806215544] [2023-12-21 14:20:58,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:20:58,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:20:59,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:20:59,079 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:20:59,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:20:59,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806215544] [2023-12-21 14:20:59,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806215544] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:20:59,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:20:59,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:20:59,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686199628] [2023-12-21 14:20:59,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:20:59,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:20:59,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:20:59,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:20:59,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:20:59,081 INFO L87 Difference]: Start difference. First operand 42493 states and 66122 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 14:20:59,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:20:59,228 INFO L93 Difference]: Finished difference Result 62279 states and 96986 transitions. [2023-12-21 14:20:59,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:20:59,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) Word has length 102 [2023-12-21 14:20:59,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:20:59,253 INFO L225 Difference]: With dead ends: 62279 [2023-12-21 14:20:59,253 INFO L226 Difference]: Without dead ends: 19877 [2023-12-21 14:20:59,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 14:20:59,281 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 68 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:20:59,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 394 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:20:59,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19877 states. [2023-12-21 14:20:59,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19877 to 19871. [2023-12-21 14:20:59,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19871 states, 19870 states have (on average 1.5503271263210872) internal successors, (30805), 19870 states have internal predecessors, (30805), 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 14:20:59,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19871 states to 19871 states and 30805 transitions. [2023-12-21 14:20:59,534 INFO L78 Accepts]: Start accepts. Automaton has 19871 states and 30805 transitions. Word has length 102 [2023-12-21 14:20:59,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:20:59,534 INFO L495 AbstractCegarLoop]: Abstraction has 19871 states and 30805 transitions. [2023-12-21 14:20:59,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 14:20:59,534 INFO L276 IsEmpty]: Start isEmpty. Operand 19871 states and 30805 transitions. [2023-12-21 14:20:59,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-21 14:20:59,536 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:20:59,536 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:20:59,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-21 14:20:59,536 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:20:59,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:20:59,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1753216283, now seen corresponding path program 1 times [2023-12-21 14:20:59,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:20:59,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329312007] [2023-12-21 14:20:59,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:20:59,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:20:59,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:20:59,886 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 14:20:59,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:20:59,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329312007] [2023-12-21 14:20:59,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329312007] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:20:59,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:20:59,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:20:59,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151195252] [2023-12-21 14:20:59,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:20:59,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 14:20:59,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:20:59,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 14:20:59,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:20:59,887 INFO L87 Difference]: Start difference. First operand 19871 states and 30805 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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 14:20:59,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:21:00,000 INFO L93 Difference]: Finished difference Result 49011 states and 75987 transitions. [2023-12-21 14:21:00,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:21:00,001 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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) Word has length 103 [2023-12-21 14:21:00,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:21:00,050 INFO L225 Difference]: With dead ends: 49011 [2023-12-21 14:21:00,050 INFO L226 Difference]: Without dead ends: 36547 [2023-12-21 14:21:00,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 14:21:00,071 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 409 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:21:00,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 632 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:21:00,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36547 states. [2023-12-21 14:21:00,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36547 to 31423. [2023-12-21 14:21:00,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31423 states, 31422 states have (on average 1.5492966711221436) internal successors, (48682), 31422 states have internal predecessors, (48682), 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 14:21:00,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31423 states to 31423 states and 48682 transitions. [2023-12-21 14:21:00,492 INFO L78 Accepts]: Start accepts. Automaton has 31423 states and 48682 transitions. Word has length 103 [2023-12-21 14:21:00,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:21:00,492 INFO L495 AbstractCegarLoop]: Abstraction has 31423 states and 48682 transitions. [2023-12-21 14:21:00,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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 14:21:00,492 INFO L276 IsEmpty]: Start isEmpty. Operand 31423 states and 48682 transitions. [2023-12-21 14:21:00,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-21 14:21:00,493 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:21:00,493 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:00,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-21 14:21:00,493 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:21:00,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:21:00,493 INFO L85 PathProgramCache]: Analyzing trace with hash -78311717, now seen corresponding path program 1 times [2023-12-21 14:21:00,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:21:00,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246482269] [2023-12-21 14:21:00,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:21:00,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:21:00,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:21:00,644 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 14:21:00,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:21:00,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246482269] [2023-12-21 14:21:00,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246482269] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:21:00,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:21:00,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:21:00,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714549697] [2023-12-21 14:21:00,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:21:00,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 14:21:00,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:21:00,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 14:21:00,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:21:00,646 INFO L87 Difference]: Start difference. First operand 31423 states and 48682 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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 14:21:00,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:21:00,818 INFO L93 Difference]: Finished difference Result 75197 states and 116527 transitions. [2023-12-21 14:21:00,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:21:00,819 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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) Word has length 103 [2023-12-21 14:21:00,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:21:00,887 INFO L225 Difference]: With dead ends: 75197 [2023-12-21 14:21:00,888 INFO L226 Difference]: Without dead ends: 56369 [2023-12-21 14:21:00,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 14:21:00,915 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 420 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:21:00,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 624 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:21:00,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56369 states. [2023-12-21 14:21:01,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56369 to 49639. [2023-12-21 14:21:01,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49639 states, 49638 states have (on average 1.5488537007937466) internal successors, (76882), 49638 states have internal predecessors, (76882), 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 14:21:01,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49639 states to 49639 states and 76882 transitions. [2023-12-21 14:21:01,731 INFO L78 Accepts]: Start accepts. Automaton has 49639 states and 76882 transitions. Word has length 103 [2023-12-21 14:21:01,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:21:01,731 INFO L495 AbstractCegarLoop]: Abstraction has 49639 states and 76882 transitions. [2023-12-21 14:21:01,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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 14:21:01,731 INFO L276 IsEmpty]: Start isEmpty. Operand 49639 states and 76882 transitions. [2023-12-21 14:21:01,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-21 14:21:01,732 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:21:01,732 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:01,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-21 14:21:01,732 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:21:01,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:21:01,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1440657073, now seen corresponding path program 1 times [2023-12-21 14:21:01,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:21:01,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202649577] [2023-12-21 14:21:01,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:21:01,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:21:01,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:21:01,773 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:21:01,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:21:01,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202649577] [2023-12-21 14:21:01,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202649577] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:21:01,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:21:01,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:21:01,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330344637] [2023-12-21 14:21:01,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:21:01,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:21:01,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:21:01,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:21:01,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:21:01,776 INFO L87 Difference]: Start difference. First operand 49639 states and 76882 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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 14:21:02,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:21:02,076 INFO L93 Difference]: Finished difference Result 146022 states and 225846 transitions. [2023-12-21 14:21:02,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:21:02,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) Word has length 104 [2023-12-21 14:21:02,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:21:02,204 INFO L225 Difference]: With dead ends: 146022 [2023-12-21 14:21:02,205 INFO L226 Difference]: Without dead ends: 96475 [2023-12-21 14:21:02,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 14:21:02,256 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 171 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:21:02,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 541 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:21:02,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96475 states. [2023-12-21 14:21:03,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96475 to 96473. [2023-12-21 14:21:03,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96473 states, 96472 states have (on average 1.5357720374823782) internal successors, (148159), 96472 states have internal predecessors, (148159), 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 14:21:03,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96473 states to 96473 states and 148159 transitions. [2023-12-21 14:21:03,429 INFO L78 Accepts]: Start accepts. Automaton has 96473 states and 148159 transitions. Word has length 104 [2023-12-21 14:21:03,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:21:03,429 INFO L495 AbstractCegarLoop]: Abstraction has 96473 states and 148159 transitions. [2023-12-21 14:21:03,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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 14:21:03,429 INFO L276 IsEmpty]: Start isEmpty. Operand 96473 states and 148159 transitions. [2023-12-21 14:21:03,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-21 14:21:03,430 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:21:03,430 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:03,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-21 14:21:03,430 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:21:03,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:21:03,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1731084199, now seen corresponding path program 1 times [2023-12-21 14:21:03,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:21:03,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322238310] [2023-12-21 14:21:03,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:21:03,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:21:03,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:21:03,737 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:21:03,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:21:03,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322238310] [2023-12-21 14:21:03,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322238310] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:21:03,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:21:03,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:21:03,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584890436] [2023-12-21 14:21:03,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:21:03,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:21:03,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:21:03,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:21:03,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:21:03,739 INFO L87 Difference]: Start difference. First operand 96473 states and 148159 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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 14:21:04,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:21:04,602 INFO L93 Difference]: Finished difference Result 283629 states and 434881 transitions. [2023-12-21 14:21:04,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:21:04,603 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) Word has length 104 [2023-12-21 14:21:04,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:21:04,885 INFO L225 Difference]: With dead ends: 283629 [2023-12-21 14:21:04,885 INFO L226 Difference]: Without dead ends: 187296 [2023-12-21 14:21:04,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 14:21:04,961 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 152 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:21:04,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 512 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:21:05,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187296 states. [2023-12-21 14:21:06,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187296 to 187294. [2023-12-21 14:21:06,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187294 states, 187293 states have (on average 1.5219255391285311) internal successors, (285046), 187293 states have internal predecessors, (285046), 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 14:21:07,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187294 states to 187294 states and 285046 transitions. [2023-12-21 14:21:07,601 INFO L78 Accepts]: Start accepts. Automaton has 187294 states and 285046 transitions. Word has length 104 [2023-12-21 14:21:07,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:21:07,601 INFO L495 AbstractCegarLoop]: Abstraction has 187294 states and 285046 transitions. [2023-12-21 14:21:07,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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 14:21:07,601 INFO L276 IsEmpty]: Start isEmpty. Operand 187294 states and 285046 transitions. [2023-12-21 14:21:07,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-21 14:21:07,603 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:21:07,603 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:07,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-21 14:21:07,603 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:21:07,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:21:07,604 INFO L85 PathProgramCache]: Analyzing trace with hash 650037642, now seen corresponding path program 1 times [2023-12-21 14:21:07,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:21:07,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308397108] [2023-12-21 14:21:07,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:21:07,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:21:07,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:21:07,644 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-21 14:21:07,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:21:07,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308397108] [2023-12-21 14:21:07,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308397108] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:21:07,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:21:07,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:21:07,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721037474] [2023-12-21 14:21:07,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:21:07,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:21:07,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:21:07,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:21:07,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:21:07,646 INFO L87 Difference]: Start difference. First operand 187294 states and 285046 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 14:21:09,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:21:09,362 INFO L93 Difference]: Finished difference Result 463804 states and 704734 transitions. [2023-12-21 14:21:09,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:21:09,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) Word has length 105 [2023-12-21 14:21:09,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:21:09,849 INFO L225 Difference]: With dead ends: 463804 [2023-12-21 14:21:09,849 INFO L226 Difference]: Without dead ends: 276784 [2023-12-21 14:21:09,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 14:21:09,946 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 114 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:21:09,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 439 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:21:10,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276784 states. [2023-12-21 14:21:12,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276784 to 189150. [2023-12-21 14:21:12,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189150 states, 189149 states have (on average 1.5216786765988717) internal successors, (287824), 189149 states have internal predecessors, (287824), 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 14:21:12,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189150 states to 189150 states and 287824 transitions. [2023-12-21 14:21:12,798 INFO L78 Accepts]: Start accepts. Automaton has 189150 states and 287824 transitions. Word has length 105 [2023-12-21 14:21:12,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:21:12,798 INFO L495 AbstractCegarLoop]: Abstraction has 189150 states and 287824 transitions. [2023-12-21 14:21:12,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 14:21:12,798 INFO L276 IsEmpty]: Start isEmpty. Operand 189150 states and 287824 transitions. [2023-12-21 14:21:12,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-21 14:21:12,800 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:21:12,800 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:12,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-21 14:21:12,800 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:21:12,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:21:12,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1716173256, now seen corresponding path program 1 times [2023-12-21 14:21:12,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:21:12,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884522048] [2023-12-21 14:21:12,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:21:12,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:21:12,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:21:12,853 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 14:21:12,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:21:12,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884522048] [2023-12-21 14:21:12,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884522048] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:21:12,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:21:12,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:21:12,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021133227] [2023-12-21 14:21:12,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:21:12,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:21:12,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:21:12,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:21:12,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:21:12,854 INFO L87 Difference]: Start difference. First operand 189150 states and 287824 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 14:21:14,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:21:14,850 INFO L93 Difference]: Finished difference Result 457694 states and 695682 transitions. [2023-12-21 14:21:14,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:21:14,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) Word has length 105 [2023-12-21 14:21:14,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:21:15,269 INFO L225 Difference]: With dead ends: 457694 [2023-12-21 14:21:15,269 INFO L226 Difference]: Without dead ends: 268872 [2023-12-21 14:21:15,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 14:21:15,341 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 120 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:21:15,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 442 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:21:15,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268872 states. [2023-12-21 14:21:17,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268872 to 191006. [2023-12-21 14:21:17,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191006 states, 191005 states have (on average 1.521436611607026) internal successors, (290602), 191005 states have internal predecessors, (290602), 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 14:21:18,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191006 states to 191006 states and 290602 transitions. [2023-12-21 14:21:18,005 INFO L78 Accepts]: Start accepts. Automaton has 191006 states and 290602 transitions. Word has length 105 [2023-12-21 14:21:18,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:21:18,006 INFO L495 AbstractCegarLoop]: Abstraction has 191006 states and 290602 transitions. [2023-12-21 14:21:18,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 14:21:18,006 INFO L276 IsEmpty]: Start isEmpty. Operand 191006 states and 290602 transitions. [2023-12-21 14:21:18,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-21 14:21:18,007 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:21:18,007 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:18,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-21 14:21:18,007 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:21:18,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:21:18,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1572025829, now seen corresponding path program 1 times [2023-12-21 14:21:18,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:21:18,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951054101] [2023-12-21 14:21:18,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:21:18,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:21:18,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:21:18,431 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-21 14:21:18,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:21:18,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951054101] [2023-12-21 14:21:18,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951054101] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:21:18,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:21:18,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:21:18,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702084565] [2023-12-21 14:21:18,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:21:18,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 14:21:18,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:21:18,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 14:21:18,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:21:18,432 INFO L87 Difference]: Start difference. First operand 191006 states and 290602 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 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 14:21:20,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:21:20,152 INFO L93 Difference]: Finished difference Result 561835 states and 853163 transitions. [2023-12-21 14:21:20,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 14:21:20,152 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 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) Word has length 107 [2023-12-21 14:21:20,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:21:20,773 INFO L225 Difference]: With dead ends: 561835 [2023-12-21 14:21:20,774 INFO L226 Difference]: Without dead ends: 370837 [2023-12-21 14:21:20,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 14:21:20,898 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 455 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:21:20,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 544 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:21:21,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370837 states. [2023-12-21 14:21:24,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370837 to 370835. [2023-12-21 14:21:25,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370835 states, 370834 states have (on average 1.5069788638582222) internal successors, (558839), 370834 states have internal predecessors, (558839), 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 14:21:25,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370835 states to 370835 states and 558839 transitions. [2023-12-21 14:21:25,790 INFO L78 Accepts]: Start accepts. Automaton has 370835 states and 558839 transitions. Word has length 107 [2023-12-21 14:21:25,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:21:25,790 INFO L495 AbstractCegarLoop]: Abstraction has 370835 states and 558839 transitions. [2023-12-21 14:21:25,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 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 14:21:25,791 INFO L276 IsEmpty]: Start isEmpty. Operand 370835 states and 558839 transitions. [2023-12-21 14:21:25,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-21 14:21:25,793 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:21:25,793 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:25,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-21 14:21:25,793 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:21:25,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:21:25,793 INFO L85 PathProgramCache]: Analyzing trace with hash 579946429, now seen corresponding path program 1 times [2023-12-21 14:21:25,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:21:26,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329799652] [2023-12-21 14:21:26,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:21:26,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:21:26,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:21:26,204 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-21 14:21:26,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:21:26,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329799652] [2023-12-21 14:21:26,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329799652] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:21:26,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:21:26,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:21:26,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886541700] [2023-12-21 14:21:26,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:21:26,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:21:26,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:21:26,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:21:26,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:21:26,205 INFO L87 Difference]: Start difference. First operand 370835 states and 558839 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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 14:21:29,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:21:29,506 INFO L93 Difference]: Finished difference Result 1112449 states and 1676425 transitions. [2023-12-21 14:21:29,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:21:29,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) Word has length 108 [2023-12-21 14:21:29,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:21:31,236 INFO L225 Difference]: With dead ends: 1112449 [2023-12-21 14:21:31,236 INFO L226 Difference]: Without dead ends: 741661 [2023-12-21 14:21:31,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 14:21:31,441 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 213 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:21:31,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 646 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:21:32,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741661 states. [2023-12-21 14:21:37,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741661 to 370837. [2023-12-21 14:21:38,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370837 states, 370836 states have (on average 1.5069761296098545) internal successors, (558841), 370836 states have internal predecessors, (558841), 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 14:21:39,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370837 states to 370837 states and 558841 transitions. [2023-12-21 14:21:39,537 INFO L78 Accepts]: Start accepts. Automaton has 370837 states and 558841 transitions. Word has length 108 [2023-12-21 14:21:39,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:21:39,537 INFO L495 AbstractCegarLoop]: Abstraction has 370837 states and 558841 transitions. [2023-12-21 14:21:39,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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 14:21:39,537 INFO L276 IsEmpty]: Start isEmpty. Operand 370837 states and 558841 transitions. [2023-12-21 14:21:39,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-21 14:21:39,540 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:21:39,541 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:39,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-21 14:21:39,541 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:21:39,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:21:39,542 INFO L85 PathProgramCache]: Analyzing trace with hash 753714965, now seen corresponding path program 1 times [2023-12-21 14:21:39,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:21:39,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218359850] [2023-12-21 14:21:39,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:21:39,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:21:39,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:21:39,668 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-21 14:21:39,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:21:39,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218359850] [2023-12-21 14:21:39,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218359850] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:21:39,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:21:39,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:21:39,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133822260] [2023-12-21 14:21:39,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:21:39,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:21:39,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:21:39,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:21:39,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:21:39,669 INFO L87 Difference]: Start difference. First operand 370837 states and 558841 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 14:21:43,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:21:43,907 INFO L93 Difference]: Finished difference Result 1087649 states and 1636588 transitions. [2023-12-21 14:21:43,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:21:43,907 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) Word has length 109 [2023-12-21 14:21:43,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:21:45,943 INFO L225 Difference]: With dead ends: 1087649 [2023-12-21 14:21:45,943 INFO L226 Difference]: Without dead ends: 717469 [2023-12-21 14:21:46,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 14:21:46,458 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 154 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:21:46,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 628 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:21:46,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717469 states. [2023-12-21 14:21:54,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717469 to 717467. [2023-12-21 14:21:55,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717467 states, 717466 states have (on average 1.4903340367348419) internal successors, (1069264), 717466 states have internal predecessors, (1069264), 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 14:21:58,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717467 states to 717467 states and 1069264 transitions. [2023-12-21 14:21:58,485 INFO L78 Accepts]: Start accepts. Automaton has 717467 states and 1069264 transitions. Word has length 109 [2023-12-21 14:21:58,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:21:58,486 INFO L495 AbstractCegarLoop]: Abstraction has 717467 states and 1069264 transitions. [2023-12-21 14:21:58,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 14:21:58,487 INFO L276 IsEmpty]: Start isEmpty. Operand 717467 states and 1069264 transitions. [2023-12-21 14:21:58,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-21 14:21:58,491 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:21:58,498 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:58,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-21 14:21:58,499 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:21:58,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:21:58,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1966276210, now seen corresponding path program 1 times [2023-12-21 14:21:58,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:21:58,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827562657] [2023-12-21 14:21:58,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:21:58,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:21:58,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:21:58,759 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-21 14:21:58,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:21:58,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827562657] [2023-12-21 14:21:58,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827562657] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:21:58,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:21:58,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:21:58,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735729327] [2023-12-21 14:21:58,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:21:58,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:21:58,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:21:58,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:21:58,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:21:58,760 INFO L87 Difference]: Start difference. First operand 717467 states and 1069264 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 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 14:22:06,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:22:06,224 INFO L93 Difference]: Finished difference Result 2108145 states and 3134629 transitions. [2023-12-21 14:22:06,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 14:22:06,224 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 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) Word has length 109 [2023-12-21 14:22:06,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:22:10,740 INFO L225 Difference]: With dead ends: 2108145 [2023-12-21 14:22:10,740 INFO L226 Difference]: Without dead ends: 1390691 [2023-12-21 14:22:11,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:22:11,484 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 660 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 660 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:22:11,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [660 Valid, 535 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:22:13,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1390691 states. [2023-12-21 14:22:28,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1390691 to 1390689. [2023-12-21 14:22:29,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1390689 states, 1390688 states have (on average 1.4751770346763615) internal successors, (2051511), 1390688 states have internal predecessors, (2051511), 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)