/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/eca-rers2012/Problem19_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 17:54:54,887 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 17:54:54,954 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 17:54:54,958 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 17:54:54,959 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 17:54:54,980 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 17:54:54,980 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 17:54:54,981 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 17:54:54,981 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 17:54:54,984 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 17:54:54,984 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 17:54:54,985 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 17:54:54,985 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 17:54:54,986 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 17:54:54,986 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 17:54:54,987 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 17:54:54,987 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 17:54:54,987 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 17:54:54,987 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 17:54:54,988 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 17:54:54,988 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 17:54:54,989 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 17:54:54,989 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 17:54:54,989 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 17:54:54,989 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 17:54:54,989 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 17:54:54,989 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 17:54:54,990 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 17:54:54,990 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 17:54:54,990 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 17:54:54,991 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 17:54:54,991 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 17:54:54,991 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 17:54:54,991 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 17:54:54,991 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 17:54:54,991 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 17:54:54,992 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 17:54:54,992 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 17:54:54,992 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 17:54:54,992 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 17:54:54,992 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 17:54:54,992 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 17:54:54,992 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 17:54:54,992 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 17:54:55,171 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 17:54:55,193 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 17:54:55,194 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 17:54:55,195 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 17:54:55,195 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 17:54:55,196 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label21.c [2023-12-20 17:54:56,170 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 17:54:56,600 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 17:54:56,601 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label21.c [2023-12-20 17:54:56,626 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af869340d/11a8e1bc13314d66a6d21c4ca03e3323/FLAGcf3034abd [2023-12-20 17:54:56,637 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af869340d/11a8e1bc13314d66a6d21c4ca03e3323 [2023-12-20 17:54:56,639 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 17:54:56,639 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 17:54:56,640 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 17:54:56,640 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 17:54:56,643 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 17:54:56,644 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 05:54:56" (1/1) ... [2023-12-20 17:54:56,644 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e46a8f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:54:56, skipping insertion in model container [2023-12-20 17:54:56,644 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 05:54:56" (1/1) ... [2023-12-20 17:54:56,753 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 17:54:56,928 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label21.c[2361,2374] [2023-12-20 17:54:57,924 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 17:54:57,931 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 17:54:57,941 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label21.c[2361,2374] [2023-12-20 17:54:58,579 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 17:54:58,605 INFO L206 MainTranslator]: Completed translation [2023-12-20 17:54:58,606 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:54:58 WrapperNode [2023-12-20 17:54:58,606 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 17:54:58,607 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 17:54:58,607 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 17:54:58,607 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 17:54:58,612 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:54:58" (1/1) ... [2023-12-20 17:54:58,669 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:54:58" (1/1) ... [2023-12-20 17:54:59,382 INFO L138 Inliner]: procedures = 19, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 9431 [2023-12-20 17:54:59,383 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 17:54:59,383 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 17:54:59,383 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 17:54:59,384 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 17:54:59,398 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:54:58" (1/1) ... [2023-12-20 17:54:59,398 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:54:58" (1/1) ... [2023-12-20 17:54:59,507 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:54:58" (1/1) ... [2023-12-20 17:54:59,678 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]. [2023-12-20 17:54:59,678 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:54:58" (1/1) ... [2023-12-20 17:54:59,678 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:54:58" (1/1) ... [2023-12-20 17:54:59,968 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:54:58" (1/1) ... [2023-12-20 17:54:59,988 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:54:58" (1/1) ... [2023-12-20 17:55:00,037 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:54:58" (1/1) ... [2023-12-20 17:55:00,063 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:54:58" (1/1) ... [2023-12-20 17:55:00,168 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 17:55:00,169 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 17:55:00,169 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 17:55:00,169 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 17:55:00,170 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:54:58" (1/1) ... [2023-12-20 17:55:00,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 17:55:00,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:55:00,190 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) [2023-12-20 17:55:00,205 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 [2023-12-20 17:55:00,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 17:55:00,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 17:55:00,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 17:55:00,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 17:55:00,378 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 17:55:00,380 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 17:55:06,234 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 17:55:06,301 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 17:55:06,301 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 17:55:06,301 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 05:55:06 BoogieIcfgContainer [2023-12-20 17:55:06,301 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 17:55:06,303 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 17:55:06,303 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 17:55:06,305 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 17:55:06,305 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 05:54:56" (1/3) ... [2023-12-20 17:55:06,306 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f141c1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 05:55:06, skipping insertion in model container [2023-12-20 17:55:06,306 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:54:58" (2/3) ... [2023-12-20 17:55:06,307 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f141c1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 05:55:06, skipping insertion in model container [2023-12-20 17:55:06,307 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 05:55:06" (3/3) ... [2023-12-20 17:55:06,307 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label21.c [2023-12-20 17:55:06,320 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 17:55:06,320 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 17:55:06,386 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 17:55:06,391 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;@656bab91, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 17:55:06,391 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 17:55:06,400 INFO L276 IsEmpty]: Start isEmpty. Operand has 1686 states, 1684 states have (on average 1.902019002375297) internal successors, (3203), 1685 states have internal predecessors, (3203), 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) [2023-12-20 17:55:06,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-20 17:55:06,405 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:55:06,406 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:55:06,407 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:55:06,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:55:06,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1719832572, now seen corresponding path program 1 times [2023-12-20 17:55:06,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:55:06,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478722118] [2023-12-20 17:55:06,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:55:06,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:55:06,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:55:06,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:55:06,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:55:06,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478722118] [2023-12-20 17:55:06,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478722118] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:55:06,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:55:06,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:55:06,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739059030] [2023-12-20 17:55:06,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:55:06,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 17:55:06,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:55:06,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 17:55:06,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 17:55:06,603 INFO L87 Difference]: Start difference. First operand has 1686 states, 1684 states have (on average 1.902019002375297) internal successors, (3203), 1685 states have internal predecessors, (3203), 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 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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) [2023-12-20 17:55:06,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:55:06,715 INFO L93 Difference]: Finished difference Result 3371 states and 6405 transitions. [2023-12-20 17:55:06,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 17:55:06,717 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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 14 [2023-12-20 17:55:06,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:55:06,735 INFO L225 Difference]: With dead ends: 3371 [2023-12-20 17:55:06,735 INFO L226 Difference]: Without dead ends: 1684 [2023-12-20 17:55:06,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 17:55:06,745 INFO L413 NwaCegarLoop]: 3138 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3138 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:55:06,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3138 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 17:55:06,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1684 states. [2023-12-20 17:55:06,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1684 to 1684. [2023-12-20 17:55:06,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1684 states, 1683 states have (on average 1.8645276292335116) internal successors, (3138), 1683 states have internal predecessors, (3138), 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) [2023-12-20 17:55:06,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 3138 transitions. [2023-12-20 17:55:06,823 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 3138 transitions. Word has length 14 [2023-12-20 17:55:06,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:55:06,823 INFO L495 AbstractCegarLoop]: Abstraction has 1684 states and 3138 transitions. [2023-12-20 17:55:06,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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) [2023-12-20 17:55:06,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 3138 transitions. [2023-12-20 17:55:06,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-20 17:55:06,824 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:55:06,824 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:55:06,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 17:55:06,825 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:55:06,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:55:06,825 INFO L85 PathProgramCache]: Analyzing trace with hash -31638648, now seen corresponding path program 1 times [2023-12-20 17:55:06,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:55:06,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63405910] [2023-12-20 17:55:06,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:55:06,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:55:06,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:55:06,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:55:06,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:55:06,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63405910] [2023-12-20 17:55:06,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63405910] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:55:06,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:55:06,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:55:06,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604591233] [2023-12-20 17:55:06,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:55:06,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:55:06,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:55:06,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:55:06,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:55:06,916 INFO L87 Difference]: Start difference. First operand 1684 states and 3138 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 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) [2023-12-20 17:55:12,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:55:12,728 INFO L93 Difference]: Finished difference Result 4862 states and 9131 transitions. [2023-12-20 17:55:12,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:55:12,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 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 14 [2023-12-20 17:55:12,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:55:12,739 INFO L225 Difference]: With dead ends: 4862 [2023-12-20 17:55:12,739 INFO L226 Difference]: Without dead ends: 3179 [2023-12-20 17:55:12,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:55:12,741 INFO L413 NwaCegarLoop]: 975 mSDtfsCounter, 1633 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 4141 mSolverCounterSat, 2020 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1633 SdHoareTripleChecker+Valid, 1110 SdHoareTripleChecker+Invalid, 6161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2020 IncrementalHoareTripleChecker+Valid, 4141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-12-20 17:55:12,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1633 Valid, 1110 Invalid, 6161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2020 Valid, 4141 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-12-20 17:55:12,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3179 states. [2023-12-20 17:55:12,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3179 to 3121. [2023-12-20 17:55:12,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3121 states, 3120 states have (on average 1.728525641025641) internal successors, (5393), 3120 states have internal predecessors, (5393), 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) [2023-12-20 17:55:12,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3121 states to 3121 states and 5393 transitions. [2023-12-20 17:55:12,785 INFO L78 Accepts]: Start accepts. Automaton has 3121 states and 5393 transitions. Word has length 14 [2023-12-20 17:55:12,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:55:12,786 INFO L495 AbstractCegarLoop]: Abstraction has 3121 states and 5393 transitions. [2023-12-20 17:55:12,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 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) [2023-12-20 17:55:12,786 INFO L276 IsEmpty]: Start isEmpty. Operand 3121 states and 5393 transitions. [2023-12-20 17:55:12,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-20 17:55:12,787 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:55:12,787 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 17:55:12,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 17:55:12,788 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:55:12,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:55:12,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1655103915, now seen corresponding path program 1 times [2023-12-20 17:55:12,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:55:12,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096259672] [2023-12-20 17:55:12,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:55:12,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:55:12,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:55:12,893 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:55:12,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:55:12,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096259672] [2023-12-20 17:55:12,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096259672] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:55:12,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:55:12,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:55:12,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689031719] [2023-12-20 17:55:12,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:55:12,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:55:12,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:55:12,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:55:12,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:55:12,895 INFO L87 Difference]: Start difference. First operand 3121 states and 5393 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 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) [2023-12-20 17:55:19,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:55:19,090 INFO L93 Difference]: Finished difference Result 9134 states and 15859 transitions. [2023-12-20 17:55:19,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:55:19,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 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 82 [2023-12-20 17:55:19,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:55:19,120 INFO L225 Difference]: With dead ends: 9134 [2023-12-20 17:55:19,121 INFO L226 Difference]: Without dead ends: 6014 [2023-12-20 17:55:19,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:55:19,130 INFO L413 NwaCegarLoop]: 719 mSDtfsCounter, 2533 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 5119 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2533 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 5553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 5119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:55:19,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2533 Valid, 990 Invalid, 5553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 5119 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-12-20 17:55:19,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6014 states. [2023-12-20 17:55:19,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6014 to 6012. [2023-12-20 17:55:19,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6012 states, 6011 states have (on average 1.6709366162036268) internal successors, (10044), 6011 states have internal predecessors, (10044), 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) [2023-12-20 17:55:19,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6012 states to 6012 states and 10044 transitions. [2023-12-20 17:55:19,260 INFO L78 Accepts]: Start accepts. Automaton has 6012 states and 10044 transitions. Word has length 82 [2023-12-20 17:55:19,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:55:19,265 INFO L495 AbstractCegarLoop]: Abstraction has 6012 states and 10044 transitions. [2023-12-20 17:55:19,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 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) [2023-12-20 17:55:19,269 INFO L276 IsEmpty]: Start isEmpty. Operand 6012 states and 10044 transitions. [2023-12-20 17:55:19,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-20 17:55:19,270 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:55:19,271 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 17:55:19,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 17:55:19,271 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:55:19,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:55:19,272 INFO L85 PathProgramCache]: Analyzing trace with hash 553788016, now seen corresponding path program 1 times [2023-12-20 17:55:19,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:55:19,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568599530] [2023-12-20 17:55:19,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:55:19,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:55:19,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:55:19,421 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:55:19,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:55:19,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568599530] [2023-12-20 17:55:19,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568599530] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:55:19,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:55:19,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:55:19,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135801313] [2023-12-20 17:55:19,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:55:19,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:55:19,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:55:19,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:55:19,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:55:19,424 INFO L87 Difference]: Start difference. First operand 6012 states and 10044 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 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) [2023-12-20 17:55:24,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:55:24,818 INFO L93 Difference]: Finished difference Result 17599 states and 29555 transitions. [2023-12-20 17:55:24,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:55:24,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 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 85 [2023-12-20 17:55:24,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:55:24,858 INFO L225 Difference]: With dead ends: 17599 [2023-12-20 17:55:24,858 INFO L226 Difference]: Without dead ends: 11588 [2023-12-20 17:55:24,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:55:24,876 INFO L413 NwaCegarLoop]: 1498 mSDtfsCounter, 1536 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 4337 mSolverCounterSat, 1469 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1536 SdHoareTripleChecker+Valid, 1717 SdHoareTripleChecker+Invalid, 5806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1469 IncrementalHoareTripleChecker+Valid, 4337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:55:24,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1536 Valid, 1717 Invalid, 5806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1469 Valid, 4337 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-12-20 17:55:24,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11588 states. [2023-12-20 17:55:25,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11588 to 11551. [2023-12-20 17:55:25,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11551 states, 11550 states have (on average 1.4579220779220778) internal successors, (16839), 11550 states have internal predecessors, (16839), 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) [2023-12-20 17:55:25,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11551 states to 11551 states and 16839 transitions. [2023-12-20 17:55:25,071 INFO L78 Accepts]: Start accepts. Automaton has 11551 states and 16839 transitions. Word has length 85 [2023-12-20 17:55:25,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:55:25,072 INFO L495 AbstractCegarLoop]: Abstraction has 11551 states and 16839 transitions. [2023-12-20 17:55:25,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 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) [2023-12-20 17:55:25,072 INFO L276 IsEmpty]: Start isEmpty. Operand 11551 states and 16839 transitions. [2023-12-20 17:55:25,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-20 17:55:25,077 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:55:25,077 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:55:25,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 17:55:25,078 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:55:25,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:55:25,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1451843649, now seen corresponding path program 1 times [2023-12-20 17:55:25,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:55:25,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033359482] [2023-12-20 17:55:25,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:55:25,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:55:25,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:55:25,257 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:55:25,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:55:25,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033359482] [2023-12-20 17:55:25,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033359482] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:55:25,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:55:25,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:55:25,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402690867] [2023-12-20 17:55:25,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:55:25,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:55:25,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:55:25,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:55:25,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:55:25,260 INFO L87 Difference]: Start difference. First operand 11551 states and 16839 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 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) [2023-12-20 17:55:30,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:55:30,830 INFO L93 Difference]: Finished difference Result 34261 states and 50012 transitions. [2023-12-20 17:55:30,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:55:30,831 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 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 111 [2023-12-20 17:55:30,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:55:30,869 INFO L225 Difference]: With dead ends: 34261 [2023-12-20 17:55:30,869 INFO L226 Difference]: Without dead ends: 22711 [2023-12-20 17:55:30,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:55:30,887 INFO L413 NwaCegarLoop]: 1846 mSDtfsCounter, 1750 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 4316 mSolverCounterSat, 1430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1750 SdHoareTripleChecker+Valid, 2119 SdHoareTripleChecker+Invalid, 5746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1430 IncrementalHoareTripleChecker+Valid, 4316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:55:30,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1750 Valid, 2119 Invalid, 5746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1430 Valid, 4316 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-12-20 17:55:30,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22711 states. [2023-12-20 17:55:31,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22711 to 22686. [2023-12-20 17:55:31,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22686 states, 22685 states have (on average 1.2821247520387922) internal successors, (29085), 22685 states have internal predecessors, (29085), 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) [2023-12-20 17:55:31,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22686 states to 22686 states and 29085 transitions. [2023-12-20 17:55:31,192 INFO L78 Accepts]: Start accepts. Automaton has 22686 states and 29085 transitions. Word has length 111 [2023-12-20 17:55:31,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:55:31,193 INFO L495 AbstractCegarLoop]: Abstraction has 22686 states and 29085 transitions. [2023-12-20 17:55:31,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 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) [2023-12-20 17:55:31,193 INFO L276 IsEmpty]: Start isEmpty. Operand 22686 states and 29085 transitions. [2023-12-20 17:55:31,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2023-12-20 17:55:31,195 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:55:31,195 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:55:31,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 17:55:31,195 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:55:31,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:55:31,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1600618150, now seen corresponding path program 1 times [2023-12-20 17:55:31,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:55:31,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492261273] [2023-12-20 17:55:31,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:55:31,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:55:31,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:55:31,794 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:55:31,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:55:31,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492261273] [2023-12-20 17:55:31,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492261273] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:55:31,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:55:31,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:55:31,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915322085] [2023-12-20 17:55:31,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:55:31,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:55:31,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:55:31,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:55:31,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:55:31,797 INFO L87 Difference]: Start difference. First operand 22686 states and 29085 transitions. Second operand has 4 states, 4 states have (on average 58.25) internal successors, (233), 3 states have internal predecessors, (233), 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) [2023-12-20 17:55:40,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:55:40,215 INFO L93 Difference]: Finished difference Result 57745 states and 72073 transitions. [2023-12-20 17:55:40,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:55:40,215 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.25) internal successors, (233), 3 states have internal predecessors, (233), 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 233 [2023-12-20 17:55:40,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:55:40,292 INFO L225 Difference]: With dead ends: 57745 [2023-12-20 17:55:40,293 INFO L226 Difference]: Without dead ends: 35060 [2023-12-20 17:55:40,320 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 [2023-12-20 17:55:40,320 INFO L413 NwaCegarLoop]: 1790 mSDtfsCounter, 3754 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 9619 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3754 SdHoareTripleChecker+Valid, 2148 SdHoareTripleChecker+Invalid, 9791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 9619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2023-12-20 17:55:40,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3754 Valid, 2148 Invalid, 9791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 9619 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2023-12-20 17:55:40,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35060 states. [2023-12-20 17:55:40,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35060 to 33648. [2023-12-20 17:55:40,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33648 states, 33647 states have (on average 1.2264986477249087) internal successors, (41268), 33647 states have internal predecessors, (41268), 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) [2023-12-20 17:55:40,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33648 states to 33648 states and 41268 transitions. [2023-12-20 17:55:40,689 INFO L78 Accepts]: Start accepts. Automaton has 33648 states and 41268 transitions. Word has length 233 [2023-12-20 17:55:40,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:55:40,691 INFO L495 AbstractCegarLoop]: Abstraction has 33648 states and 41268 transitions. [2023-12-20 17:55:40,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.25) internal successors, (233), 3 states have internal predecessors, (233), 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) [2023-12-20 17:55:40,691 INFO L276 IsEmpty]: Start isEmpty. Operand 33648 states and 41268 transitions. [2023-12-20 17:55:40,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2023-12-20 17:55:40,694 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:55:40,695 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:55:40,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 17:55:40,695 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:55:40,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:55:40,695 INFO L85 PathProgramCache]: Analyzing trace with hash 460518502, now seen corresponding path program 1 times [2023-12-20 17:55:40,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:55:40,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927862860] [2023-12-20 17:55:40,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:55:40,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:55:40,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:55:41,499 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 218 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-20 17:55:41,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:55:41,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927862860] [2023-12-20 17:55:41,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927862860] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:55:41,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:55:41,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:55:41,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052975845] [2023-12-20 17:55:41,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:55:41,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:55:41,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:55:41,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:55:41,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:55:41,501 INFO L87 Difference]: Start difference. First operand 33648 states and 41268 transitions. Second operand has 4 states, 4 states have (on average 107.0) internal successors, (428), 3 states have internal predecessors, (428), 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) [2023-12-20 17:55:49,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:55:49,604 INFO L93 Difference]: Finished difference Result 90601 states and 108603 transitions. [2023-12-20 17:55:49,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:55:49,604 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 107.0) internal successors, (428), 3 states have internal predecessors, (428), 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 440 [2023-12-20 17:55:49,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:55:49,668 INFO L225 Difference]: With dead ends: 90601 [2023-12-20 17:55:49,669 INFO L226 Difference]: Without dead ends: 56954 [2023-12-20 17:55:49,699 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 [2023-12-20 17:55:49,700 INFO L413 NwaCegarLoop]: 1748 mSDtfsCounter, 3759 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 9355 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3759 SdHoareTripleChecker+Valid, 2101 SdHoareTripleChecker+Invalid, 9618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 9355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2023-12-20 17:55:49,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3759 Valid, 2101 Invalid, 9618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 9355 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2023-12-20 17:55:49,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56954 states. [2023-12-20 17:55:50,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56954 to 55543. [2023-12-20 17:55:50,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55543 states, 55542 states have (on average 1.1662345612329408) internal successors, (64775), 55542 states have internal predecessors, (64775), 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) [2023-12-20 17:55:50,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55543 states to 55543 states and 64775 transitions. [2023-12-20 17:55:50,511 INFO L78 Accepts]: Start accepts. Automaton has 55543 states and 64775 transitions. Word has length 440 [2023-12-20 17:55:50,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:55:50,511 INFO L495 AbstractCegarLoop]: Abstraction has 55543 states and 64775 transitions. [2023-12-20 17:55:50,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 107.0) internal successors, (428), 3 states have internal predecessors, (428), 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) [2023-12-20 17:55:50,511 INFO L276 IsEmpty]: Start isEmpty. Operand 55543 states and 64775 transitions. [2023-12-20 17:55:50,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2023-12-20 17:55:50,515 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:55:50,515 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:55:50,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 17:55:50,516 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:55:50,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:55:50,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1943082048, now seen corresponding path program 1 times [2023-12-20 17:55:50,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:55:50,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525119767] [2023-12-20 17:55:50,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:55:50,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:55:50,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:55:51,012 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 243 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:55:51,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:55:51,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525119767] [2023-12-20 17:55:51,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525119767] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:55:51,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:55:51,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:55:51,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919685992] [2023-12-20 17:55:51,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:55:51,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:55:51,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:55:51,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:55:51,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:55:51,015 INFO L87 Difference]: Start difference. First operand 55543 states and 64775 transitions. Second operand has 4 states, 4 states have (on average 117.0) internal successors, (468), 3 states have internal predecessors, (468), 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) [2023-12-20 17:55:57,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:55:57,599 INFO L93 Difference]: Finished difference Result 108386 states and 126832 transitions. [2023-12-20 17:55:57,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:55:57,600 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 117.0) internal successors, (468), 3 states have internal predecessors, (468), 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 468 [2023-12-20 17:55:57,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:55:57,798 INFO L225 Difference]: With dead ends: 108386 [2023-12-20 17:55:57,799 INFO L226 Difference]: Without dead ends: 55543 [2023-12-20 17:55:57,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:55:57,826 INFO L413 NwaCegarLoop]: 1766 mSDtfsCounter, 1138 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 7322 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 2107 SdHoareTripleChecker+Invalid, 7330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 7322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:55:57,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1138 Valid, 2107 Invalid, 7330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 7322 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2023-12-20 17:55:57,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55543 states. [2023-12-20 17:55:58,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55543 to 55543. [2023-12-20 17:55:58,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55543 states, 55542 states have (on average 1.166000504123006) internal successors, (64762), 55542 states have internal predecessors, (64762), 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) [2023-12-20 17:55:58,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55543 states to 55543 states and 64762 transitions. [2023-12-20 17:55:58,322 INFO L78 Accepts]: Start accepts. Automaton has 55543 states and 64762 transitions. Word has length 468 [2023-12-20 17:55:58,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:55:58,322 INFO L495 AbstractCegarLoop]: Abstraction has 55543 states and 64762 transitions. [2023-12-20 17:55:58,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.0) internal successors, (468), 3 states have internal predecessors, (468), 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) [2023-12-20 17:55:58,323 INFO L276 IsEmpty]: Start isEmpty. Operand 55543 states and 64762 transitions. [2023-12-20 17:55:58,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 714 [2023-12-20 17:55:58,331 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:55:58,331 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:55:58,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 17:55:58,331 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:55:58,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:55:58,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1246627216, now seen corresponding path program 1 times [2023-12-20 17:55:58,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:55:58,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004370574] [2023-12-20 17:55:58,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:55:58,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:55:58,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:55:58,678 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2023-12-20 17:55:58,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:55:58,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004370574] [2023-12-20 17:55:58,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004370574] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:55:58,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:55:58,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:55:58,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584547185] [2023-12-20 17:55:58,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:55:58,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:55:58,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:55:58,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:55:58,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:55:58,681 INFO L87 Difference]: Start difference. First operand 55543 states and 64762 transitions. Second operand has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 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) [2023-12-20 17:56:04,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:56:04,518 INFO L93 Difference]: Finished difference Result 134342 states and 159912 transitions. [2023-12-20 17:56:04,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:56:04,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 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 713 [2023-12-20 17:56:04,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:56:04,625 INFO L225 Difference]: With dead ends: 134342 [2023-12-20 17:56:04,625 INFO L226 Difference]: Without dead ends: 81530 [2023-12-20 17:56:04,673 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 [2023-12-20 17:56:04,675 INFO L413 NwaCegarLoop]: 3118 mSDtfsCounter, 1403 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 4624 mSolverCounterSat, 1160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1403 SdHoareTripleChecker+Valid, 3317 SdHoareTripleChecker+Invalid, 5784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1160 IncrementalHoareTripleChecker+Valid, 4624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:56:04,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1403 Valid, 3317 Invalid, 5784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1160 Valid, 4624 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-12-20 17:56:04,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81530 states. [2023-12-20 17:56:05,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81530 to 81512. [2023-12-20 17:56:05,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81512 states, 81511 states have (on average 1.133969648268332) internal successors, (92431), 81511 states have internal predecessors, (92431), 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) [2023-12-20 17:56:05,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81512 states to 81512 states and 92431 transitions. [2023-12-20 17:56:05,661 INFO L78 Accepts]: Start accepts. Automaton has 81512 states and 92431 transitions. Word has length 713 [2023-12-20 17:56:05,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:56:05,676 INFO L495 AbstractCegarLoop]: Abstraction has 81512 states and 92431 transitions. [2023-12-20 17:56:05,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 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) [2023-12-20 17:56:05,676 INFO L276 IsEmpty]: Start isEmpty. Operand 81512 states and 92431 transitions. [2023-12-20 17:56:05,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 721 [2023-12-20 17:56:05,689 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:56:05,690 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:56:05,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 17:56:05,690 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:56:05,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:56:05,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1192170489, now seen corresponding path program 1 times [2023-12-20 17:56:05,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:56:05,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701520294] [2023-12-20 17:56:05,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:56:05,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:56:05,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:56:07,318 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 25 proven. 218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:56:07,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:56:07,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701520294] [2023-12-20 17:56:07,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701520294] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:56:07,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081339862] [2023-12-20 17:56:07,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:56:07,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:56:07,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:56:07,321 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:56:07,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 17:56:07,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:56:07,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 826 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 17:56:07,548 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:56:07,615 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2023-12-20 17:56:07,615 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:56:07,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081339862] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:56:07,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:56:07,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-12-20 17:56:07,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382990199] [2023-12-20 17:56:07,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:56:07,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:56:07,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:56:07,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:56:07,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-20 17:56:07,618 INFO L87 Difference]: Start difference. First operand 81512 states and 92431 transitions. Second operand has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 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) [2023-12-20 17:56:13,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:56:13,642 INFO L93 Difference]: Finished difference Result 202655 states and 232498 transitions. [2023-12-20 17:56:13,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:56:13,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 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 720 [2023-12-20 17:56:13,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:56:13,807 INFO L225 Difference]: With dead ends: 202655 [2023-12-20 17:56:13,807 INFO L226 Difference]: Without dead ends: 123874 [2023-12-20 17:56:13,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 725 GetRequests, 719 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-20 17:56:13,833 INFO L413 NwaCegarLoop]: 1564 mSDtfsCounter, 1543 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 5072 mSolverCounterSat, 996 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1543 SdHoareTripleChecker+Valid, 1693 SdHoareTripleChecker+Invalid, 6068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 996 IncrementalHoareTripleChecker+Valid, 5072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-12-20 17:56:13,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1543 Valid, 1693 Invalid, 6068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [996 Valid, 5072 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-12-20 17:56:14,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123874 states. [2023-12-20 17:56:14,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123874 to 117012. [2023-12-20 17:56:15,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117012 states, 117011 states have (on average 1.1337310167420158) internal successors, (132659), 117011 states have internal predecessors, (132659), 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) [2023-12-20 17:56:15,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117012 states to 117012 states and 132659 transitions. [2023-12-20 17:56:15,216 INFO L78 Accepts]: Start accepts. Automaton has 117012 states and 132659 transitions. Word has length 720 [2023-12-20 17:56:15,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:56:15,217 INFO L495 AbstractCegarLoop]: Abstraction has 117012 states and 132659 transitions. [2023-12-20 17:56:15,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 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) [2023-12-20 17:56:15,217 INFO L276 IsEmpty]: Start isEmpty. Operand 117012 states and 132659 transitions. [2023-12-20 17:56:15,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 735 [2023-12-20 17:56:15,226 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:56:15,226 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:56:15,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 17:56:15,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-20 17:56:15,432 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:56:15,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:56:15,432 INFO L85 PathProgramCache]: Analyzing trace with hash -2107460356, now seen corresponding path program 1 times [2023-12-20 17:56:15,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:56:15,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127891815] [2023-12-20 17:56:15,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:56:15,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:56:15,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:56:16,090 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-12-20 17:56:16,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:56:16,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127891815] [2023-12-20 17:56:16,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127891815] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:56:16,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:56:16,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:56:16,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945127138] [2023-12-20 17:56:16,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:56:16,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:56:16,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:56:16,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:56:16,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:56:16,092 INFO L87 Difference]: Start difference. First operand 117012 states and 132659 transitions. Second operand has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 2 states have internal predecessors, (503), 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) [2023-12-20 17:56:20,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:56:20,645 INFO L93 Difference]: Finished difference Result 231302 states and 262599 transitions. [2023-12-20 17:56:20,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:56:20,646 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 2 states have internal predecessors, (503), 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 734 [2023-12-20 17:56:20,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:56:20,826 INFO L225 Difference]: With dead ends: 231302 [2023-12-20 17:56:20,826 INFO L226 Difference]: Without dead ends: 117021 [2023-12-20 17:56:20,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:56:20,911 INFO L413 NwaCegarLoop]: 699 mSDtfsCounter, 1387 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 3925 mSolverCounterSat, 1378 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1387 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 5303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1378 IncrementalHoareTripleChecker+Valid, 3925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:56:20,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1387 Valid, 749 Invalid, 5303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1378 Valid, 3925 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-12-20 17:56:21,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117021 states. [2023-12-20 17:56:22,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117021 to 116996. [2023-12-20 17:56:22,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116996 states, 116995 states have (on average 1.110620111970597) internal successors, (129937), 116995 states have internal predecessors, (129937), 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) [2023-12-20 17:56:22,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116996 states to 116996 states and 129937 transitions. [2023-12-20 17:56:22,770 INFO L78 Accepts]: Start accepts. Automaton has 116996 states and 129937 transitions. Word has length 734 [2023-12-20 17:56:22,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:56:22,771 INFO L495 AbstractCegarLoop]: Abstraction has 116996 states and 129937 transitions. [2023-12-20 17:56:22,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 2 states have internal predecessors, (503), 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) [2023-12-20 17:56:22,771 INFO L276 IsEmpty]: Start isEmpty. Operand 116996 states and 129937 transitions. [2023-12-20 17:56:22,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 870 [2023-12-20 17:56:22,806 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:56:22,806 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:56:22,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 17:56:22,806 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:56:22,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:56:22,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1301155457, now seen corresponding path program 1 times [2023-12-20 17:56:22,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:56:22,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019949409] [2023-12-20 17:56:22,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:56:22,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:56:23,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:56:23,587 INFO L134 CoverageAnalysis]: Checked inductivity of 641 backedges. 419 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2023-12-20 17:56:23,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:56:23,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019949409] [2023-12-20 17:56:23,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019949409] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:56:23,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:56:23,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:56:23,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418773] [2023-12-20 17:56:23,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:56:23,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:56:23,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:56:23,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:56:23,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:56:23,589 INFO L87 Difference]: Start difference. First operand 116996 states and 129937 transitions. Second operand has 4 states, 4 states have (on average 162.25) internal successors, (649), 4 states have internal predecessors, (649), 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) [2023-12-20 17:56:33,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:56:33,575 INFO L93 Difference]: Finished difference Result 369454 states and 414719 transitions. [2023-12-20 17:56:33,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:56:33,575 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 162.25) internal successors, (649), 4 states have internal predecessors, (649), 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 869 [2023-12-20 17:56:33,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:56:33,949 INFO L225 Difference]: With dead ends: 369454 [2023-12-20 17:56:33,949 INFO L226 Difference]: Without dead ends: 255189 [2023-12-20 17:56:34,199 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 [2023-12-20 17:56:34,200 INFO L413 NwaCegarLoop]: 836 mSDtfsCounter, 3283 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 8726 mSolverCounterSat, 2924 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3283 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 11650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2924 IncrementalHoareTripleChecker+Valid, 8726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:56:34,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3283 Valid, 1173 Invalid, 11650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2924 Valid, 8726 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2023-12-20 17:56:34,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255189 states. [2023-12-20 17:56:36,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255189 to 246832. [2023-12-20 17:56:36,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246832 states, 246831 states have (on average 1.1074297798898842) internal successors, (273348), 246831 states have internal predecessors, (273348), 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) [2023-12-20 17:56:37,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246832 states to 246832 states and 273348 transitions. [2023-12-20 17:56:37,810 INFO L78 Accepts]: Start accepts. Automaton has 246832 states and 273348 transitions. Word has length 869 [2023-12-20 17:56:37,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:56:37,811 INFO L495 AbstractCegarLoop]: Abstraction has 246832 states and 273348 transitions. [2023-12-20 17:56:37,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 162.25) internal successors, (649), 4 states have internal predecessors, (649), 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) [2023-12-20 17:56:37,811 INFO L276 IsEmpty]: Start isEmpty. Operand 246832 states and 273348 transitions. [2023-12-20 17:56:37,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 874 [2023-12-20 17:56:37,844 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:56:37,845 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:56:37,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 17:56:37,845 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:56:37,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:56:37,846 INFO L85 PathProgramCache]: Analyzing trace with hash 496123932, now seen corresponding path program 1 times [2023-12-20 17:56:37,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:56:37,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207662435] [2023-12-20 17:56:37,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:56:37,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:56:38,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:56:39,568 INFO L134 CoverageAnalysis]: Checked inductivity of 566 backedges. 357 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2023-12-20 17:56:39,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:56:39,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207662435] [2023-12-20 17:56:39,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207662435] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:56:39,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:56:39,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:56:39,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542718675] [2023-12-20 17:56:39,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:56:39,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:56:39,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:56:39,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:56:39,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:56:39,570 INFO L87 Difference]: Start difference. First operand 246832 states and 273348 transitions. Second operand has 3 states, 3 states have (on average 221.66666666666666) internal successors, (665), 3 states have internal predecessors, (665), 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) [2023-12-20 17:56:47,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:56:47,017 INFO L93 Difference]: Finished difference Result 583902 states and 650779 transitions. [2023-12-20 17:56:47,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:56:47,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 221.66666666666666) internal successors, (665), 3 states have internal predecessors, (665), 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 873 [2023-12-20 17:56:47,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:56:47,470 INFO L225 Difference]: With dead ends: 583902 [2023-12-20 17:56:47,470 INFO L226 Difference]: Without dead ends: 339801 [2023-12-20 17:56:47,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:56:47,557 INFO L413 NwaCegarLoop]: 622 mSDtfsCounter, 1583 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 4243 mSolverCounterSat, 2302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1583 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 6545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2302 IncrementalHoareTripleChecker+Valid, 4243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-12-20 17:56:47,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1583 Valid, 678 Invalid, 6545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2302 Valid, 4243 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-12-20 17:56:47,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339801 states. [2023-12-20 17:56:51,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339801 to 324629. [2023-12-20 17:56:51,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324629 states, 324628 states have (on average 1.1202330051628326) internal successors, (363659), 324628 states have internal predecessors, (363659), 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) [2023-12-20 17:56:52,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324629 states to 324629 states and 363659 transitions. [2023-12-20 17:56:52,094 INFO L78 Accepts]: Start accepts. Automaton has 324629 states and 363659 transitions. Word has length 873 [2023-12-20 17:56:52,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:56:52,094 INFO L495 AbstractCegarLoop]: Abstraction has 324629 states and 363659 transitions. [2023-12-20 17:56:52,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 221.66666666666666) internal successors, (665), 3 states have internal predecessors, (665), 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) [2023-12-20 17:56:52,095 INFO L276 IsEmpty]: Start isEmpty. Operand 324629 states and 363659 transitions. [2023-12-20 17:56:52,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 892 [2023-12-20 17:56:52,102 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:56:52,102 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:56:52,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 17:56:52,103 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:56:52,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:56:52,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1902098072, now seen corresponding path program 1 times [2023-12-20 17:56:52,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:56:52,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60105135] [2023-12-20 17:56:52,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:56:52,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:56:52,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:56:52,658 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2023-12-20 17:56:52,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:56:52,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60105135] [2023-12-20 17:56:52,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60105135] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:56:52,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:56:52,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:56:52,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300665825] [2023-12-20 17:56:52,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:56:52,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:56:52,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:56:52,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:56:52,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:56:52,660 INFO L87 Difference]: Start difference. First operand 324629 states and 363659 transitions. Second operand has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 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) [2023-12-20 17:56:59,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:56:59,151 INFO L93 Difference]: Finished difference Result 705232 states and 797555 transitions. [2023-12-20 17:56:59,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:56:59,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 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 891 [2023-12-20 17:56:59,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:56:59,868 INFO L225 Difference]: With dead ends: 705232 [2023-12-20 17:56:59,868 INFO L226 Difference]: Without dead ends: 383334 [2023-12-20 17:56:59,952 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 [2023-12-20 17:56:59,952 INFO L413 NwaCegarLoop]: 2994 mSDtfsCounter, 1507 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 3695 mSolverCounterSat, 1646 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 3176 SdHoareTripleChecker+Invalid, 5341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1646 IncrementalHoareTripleChecker+Valid, 3695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:56:59,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1507 Valid, 3176 Invalid, 5341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1646 Valid, 3695 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-12-20 17:57:00,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383334 states. [2023-12-20 17:57:03,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383334 to 371036. [2023-12-20 17:57:03,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371036 states, 371035 states have (on average 1.105798644332745) internal successors, (410290), 371035 states have internal predecessors, (410290), 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) [2023-12-20 17:57:04,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371036 states to 371036 states and 410290 transitions. [2023-12-20 17:57:04,757 INFO L78 Accepts]: Start accepts. Automaton has 371036 states and 410290 transitions. Word has length 891 [2023-12-20 17:57:04,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:57:04,757 INFO L495 AbstractCegarLoop]: Abstraction has 371036 states and 410290 transitions. [2023-12-20 17:57:04,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 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) [2023-12-20 17:57:04,758 INFO L276 IsEmpty]: Start isEmpty. Operand 371036 states and 410290 transitions. [2023-12-20 17:57:04,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 946 [2023-12-20 17:57:04,779 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:57:04,779 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:57:04,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 17:57:04,780 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:57:04,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:57:04,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1270427197, now seen corresponding path program 1 times [2023-12-20 17:57:04,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:57:04,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001272472] [2023-12-20 17:57:04,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:57:04,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:57:04,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:57:05,533 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 341 proven. 0 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2023-12-20 17:57:05,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:57:05,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001272472] [2023-12-20 17:57:05,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001272472] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:57:05,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:57:05,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:57:05,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988495266] [2023-12-20 17:57:05,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:57:05,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:57:05,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:57:05,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:57:05,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:57:05,538 INFO L87 Difference]: Start difference. First operand 371036 states and 410290 transitions. Second operand has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 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) [2023-12-20 17:57:17,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:57:17,998 INFO L93 Difference]: Finished difference Result 1066940 states and 1195586 transitions. [2023-12-20 17:57:17,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:57:17,999 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 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 945 [2023-12-20 17:57:17,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:57:19,532 INFO L225 Difference]: With dead ends: 1066940 [2023-12-20 17:57:19,532 INFO L226 Difference]: Without dead ends: 698635 [2023-12-20 17:57:19,721 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 [2023-12-20 17:57:19,721 INFO L413 NwaCegarLoop]: 1012 mSDtfsCounter, 3131 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 6373 mSolverCounterSat, 2519 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3131 SdHoareTripleChecker+Valid, 1234 SdHoareTripleChecker+Invalid, 8892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2519 IncrementalHoareTripleChecker+Valid, 6373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:57:19,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3131 Valid, 1234 Invalid, 8892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2519 Valid, 6373 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2023-12-20 17:57:20,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698635 states. [2023-12-20 17:57:27,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698635 to 665854. [2023-12-20 17:57:27,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665854 states, 665853 states have (on average 1.097572587342852) internal successors, (730822), 665853 states have internal predecessors, (730822), 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) [2023-12-20 17:57:30,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665854 states to 665854 states and 730822 transitions. [2023-12-20 17:57:30,253 INFO L78 Accepts]: Start accepts. Automaton has 665854 states and 730822 transitions. Word has length 945 [2023-12-20 17:57:30,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:57:30,253 INFO L495 AbstractCegarLoop]: Abstraction has 665854 states and 730822 transitions. [2023-12-20 17:57:30,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 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) [2023-12-20 17:57:30,254 INFO L276 IsEmpty]: Start isEmpty. Operand 665854 states and 730822 transitions. [2023-12-20 17:57:30,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1210 [2023-12-20 17:57:30,275 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:57:30,275 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:57:30,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 17:57:30,276 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:57:30,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:57:30,277 INFO L85 PathProgramCache]: Analyzing trace with hash -524898790, now seen corresponding path program 1 times [2023-12-20 17:57:30,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:57:30,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205591827] [2023-12-20 17:57:30,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:57:30,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:57:30,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:57:32,361 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2023-12-20 17:57:32,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:57:32,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205591827] [2023-12-20 17:57:32,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205591827] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:57:32,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:57:32,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:57:32,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251185719] [2023-12-20 17:57:32,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:57:32,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:57:32,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:57:32,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:57:32,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:57:32,372 INFO L87 Difference]: Start difference. First operand 665854 states and 730822 transitions. Second operand has 3 states, 3 states have (on average 241.66666666666666) internal successors, (725), 3 states have internal predecessors, (725), 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) [2023-12-20 17:57:42,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:57:42,959 INFO L93 Difference]: Finished difference Result 1424573 states and 1568352 transitions. [2023-12-20 17:57:42,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:57:42,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 241.66666666666666) internal successors, (725), 3 states have internal predecessors, (725), 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 1209 [2023-12-20 17:57:42,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:57:44,217 INFO L225 Difference]: With dead ends: 1424573 [2023-12-20 17:57:44,218 INFO L226 Difference]: Without dead ends: 761450 [2023-12-20 17:57:44,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:57:44,826 INFO L413 NwaCegarLoop]: 759 mSDtfsCounter, 1692 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 4191 mSolverCounterSat, 2160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1692 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 6351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2160 IncrementalHoareTripleChecker+Valid, 4191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:57:44,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1692 Valid, 824 Invalid, 6351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2160 Valid, 4191 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-12-20 17:57:45,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761450 states. [2023-12-20 17:57:54,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761450 to 596143. [2023-12-20 17:57:54,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596143 states, 596142 states have (on average 1.116376635097007) internal successors, (665519), 596142 states have internal predecessors, (665519), 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) [2023-12-20 17:57:56,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596143 states to 596143 states and 665519 transitions. [2023-12-20 17:57:56,086 INFO L78 Accepts]: Start accepts. Automaton has 596143 states and 665519 transitions. Word has length 1209 [2023-12-20 17:57:56,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:57:56,087 INFO L495 AbstractCegarLoop]: Abstraction has 596143 states and 665519 transitions. [2023-12-20 17:57:56,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 241.66666666666666) internal successors, (725), 3 states have internal predecessors, (725), 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) [2023-12-20 17:57:56,087 INFO L276 IsEmpty]: Start isEmpty. Operand 596143 states and 665519 transitions. [2023-12-20 17:57:56,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1340 [2023-12-20 17:57:56,117 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:57:56,123 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:57:56,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 17:57:56,123 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:57:56,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:57:56,124 INFO L85 PathProgramCache]: Analyzing trace with hash 704748749, now seen corresponding path program 1 times [2023-12-20 17:57:56,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:57:56,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774891885] [2023-12-20 17:57:56,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:57:56,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:57:56,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:57:58,177 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 169 proven. 614 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:57:58,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:57:58,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774891885] [2023-12-20 17:57:58,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774891885] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:57:58,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041966004] [2023-12-20 17:57:58,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:57:58,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:57:58,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:57:58,182 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:57:58,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 17:57:58,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:57:58,516 INFO L262 TraceCheckSpWp]: Trace formula consists of 1488 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 17:57:58,526 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:57:58,715 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 298 proven. 0 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2023-12-20 17:57:58,715 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:57:58,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041966004] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:57:58,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:57:58,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-20 17:57:58,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465561320] [2023-12-20 17:57:58,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:57:58,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:57:58,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:57:58,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:57:58,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 17:57:58,718 INFO L87 Difference]: Start difference. First operand 596143 states and 665519 transitions. Second operand has 3 states, 3 states have (on average 285.0) internal successors, (855), 3 states have internal predecessors, (855), 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) [2023-12-20 17:58:07,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:58:07,191 INFO L93 Difference]: Finished difference Result 1199126 states and 1338105 transitions. [2023-12-20 17:58:07,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:58:07,192 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 285.0) internal successors, (855), 3 states have internal predecessors, (855), 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 1339 [2023-12-20 17:58:07,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:58:08,580 INFO L225 Difference]: With dead ends: 1199126 [2023-12-20 17:58:08,580 INFO L226 Difference]: Without dead ends: 601619 [2023-12-20 17:58:08,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1344 GetRequests, 1339 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 17:58:08,810 INFO L413 NwaCegarLoop]: 2613 mSDtfsCounter, 1576 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 3701 mSolverCounterSat, 1391 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1576 SdHoareTripleChecker+Valid, 2744 SdHoareTripleChecker+Invalid, 5092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1391 IncrementalHoareTripleChecker+Valid, 3701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-12-20 17:58:08,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1576 Valid, 2744 Invalid, 5092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1391 Valid, 3701 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-12-20 17:58:09,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601619 states. [2023-12-20 17:58:15,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601619 to 592037. [2023-12-20 17:58:15,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592037 states, 592036 states have (on average 1.0897918369828863) internal successors, (645196), 592036 states have internal predecessors, (645196), 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) [2023-12-20 17:58:16,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592037 states to 592037 states and 645196 transitions. [2023-12-20 17:58:16,707 INFO L78 Accepts]: Start accepts. Automaton has 592037 states and 645196 transitions. Word has length 1339 [2023-12-20 17:58:16,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:58:16,708 INFO L495 AbstractCegarLoop]: Abstraction has 592037 states and 645196 transitions. [2023-12-20 17:58:16,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 285.0) internal successors, (855), 3 states have internal predecessors, (855), 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) [2023-12-20 17:58:16,708 INFO L276 IsEmpty]: Start isEmpty. Operand 592037 states and 645196 transitions. [2023-12-20 17:58:16,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1369 [2023-12-20 17:58:16,732 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:58:16,732 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:58:16,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 17:58:16,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-20 17:58:16,938 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:58:16,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:58:16,939 INFO L85 PathProgramCache]: Analyzing trace with hash -2062627524, now seen corresponding path program 1 times [2023-12-20 17:58:16,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:58:16,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143315133] [2023-12-20 17:58:16,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:58:16,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:58:17,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:58:18,636 INFO L134 CoverageAnalysis]: Checked inductivity of 2333 backedges. 1372 proven. 409 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2023-12-20 17:58:18,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:58:18,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143315133] [2023-12-20 17:58:18,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143315133] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:58:18,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211351505] [2023-12-20 17:58:18,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:58:18,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:58:18,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:58:18,658 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:58:18,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 17:58:18,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:58:18,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 1574 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 17:58:19,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:58:19,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2333 backedges. 679 proven. 0 refuted. 0 times theorem prover too weak. 1654 trivial. 0 not checked. [2023-12-20 17:58:19,029 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:58:19,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211351505] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:58:19,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:58:19,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-20 17:58:19,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476478027] [2023-12-20 17:58:19,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:58:19,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:58:19,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:58:19,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:58:19,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 17:58:19,031 INFO L87 Difference]: Start difference. First operand 592037 states and 645196 transitions. Second operand has 3 states, 3 states have (on average 209.33333333333334) internal successors, (628), 3 states have internal predecessors, (628), 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) [2023-12-20 17:58:27,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:58:27,588 INFO L93 Difference]: Finished difference Result 1270055 states and 1382612 transitions. [2023-12-20 17:58:27,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:58:27,589 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 209.33333333333334) internal successors, (628), 3 states have internal predecessors, (628), 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 1368 [2023-12-20 17:58:27,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:58:29,016 INFO L225 Difference]: With dead ends: 1270055 [2023-12-20 17:58:29,016 INFO L226 Difference]: Without dead ends: 676654 [2023-12-20 17:58:29,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1371 GetRequests, 1367 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 17:58:29,929 INFO L413 NwaCegarLoop]: 1556 mSDtfsCounter, 1621 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 3888 mSolverCounterSat, 1118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1621 SdHoareTripleChecker+Valid, 1687 SdHoareTripleChecker+Invalid, 5006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1118 IncrementalHoareTripleChecker+Valid, 3888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-12-20 17:58:29,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1621 Valid, 1687 Invalid, 5006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1118 Valid, 3888 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-12-20 17:58:30,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676654 states. [2023-12-20 17:58:37,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676654 to 563140. [2023-12-20 17:58:38,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563140 states, 563139 states have (on average 1.0909029564636794) internal successors, (614330), 563139 states have internal predecessors, (614330), 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) [2023-12-20 17:58:40,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563140 states to 563140 states and 614330 transitions. [2023-12-20 17:58:40,043 INFO L78 Accepts]: Start accepts. Automaton has 563140 states and 614330 transitions. Word has length 1368 [2023-12-20 17:58:40,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:58:40,053 INFO L495 AbstractCegarLoop]: Abstraction has 563140 states and 614330 transitions. [2023-12-20 17:58:40,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 209.33333333333334) internal successors, (628), 3 states have internal predecessors, (628), 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) [2023-12-20 17:58:40,053 INFO L276 IsEmpty]: Start isEmpty. Operand 563140 states and 614330 transitions. [2023-12-20 17:58:40,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1411 [2023-12-20 17:58:40,082 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:58:40,083 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:58:40,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 17:58:40,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-20 17:58:40,290 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:58:40,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:58:40,291 INFO L85 PathProgramCache]: Analyzing trace with hash 662812258, now seen corresponding path program 1 times [2023-12-20 17:58:40,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:58:40,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078514187] [2023-12-20 17:58:40,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:58:40,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:58:40,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:58:43,852 INFO L134 CoverageAnalysis]: Checked inductivity of 2330 backedges. 1309 proven. 218 refuted. 0 times theorem prover too weak. 803 trivial. 0 not checked. [2023-12-20 17:58:43,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:58:43,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078514187] [2023-12-20 17:58:43,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078514187] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:58:43,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481394818] [2023-12-20 17:58:43,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:58:43,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:58:43,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:58:43,890 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:58:43,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 17:58:44,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:58:44,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 1622 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 17:58:44,225 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:58:44,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2330 backedges. 1703 proven. 0 refuted. 0 times theorem prover too weak. 627 trivial. 0 not checked. [2023-12-20 17:58:44,596 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:58:44,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481394818] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:58:44,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:58:44,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-12-20 17:58:44,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347716809] [2023-12-20 17:58:44,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:58:44,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:58:44,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:58:44,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:58:44,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-20 17:58:44,600 INFO L87 Difference]: Start difference. First operand 563140 states and 614330 transitions. Second operand has 3 states, 3 states have (on average 311.0) internal successors, (933), 3 states have internal predecessors, (933), 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) [2023-12-20 17:58:52,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:58:52,847 INFO L93 Difference]: Finished difference Result 1224568 states and 1340435 transitions. [2023-12-20 17:58:52,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:58:52,848 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 311.0) internal successors, (933), 3 states have internal predecessors, (933), 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 1410 [2023-12-20 17:58:52,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:58:54,795 INFO L225 Difference]: With dead ends: 1224568 [2023-12-20 17:58:54,795 INFO L226 Difference]: Without dead ends: 661428 [2023-12-20 17:58:55,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1415 GetRequests, 1409 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-20 17:58:55,258 INFO L413 NwaCegarLoop]: 2487 mSDtfsCounter, 1446 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 3758 mSolverCounterSat, 1412 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1446 SdHoareTripleChecker+Valid, 2571 SdHoareTripleChecker+Invalid, 5170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1412 IncrementalHoareTripleChecker+Valid, 3758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:58:55,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1446 Valid, 2571 Invalid, 5170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1412 Valid, 3758 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-12-20 17:58:55,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661428 states. [2023-12-20 17:59:03,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661428 to 647767. [2023-12-20 17:59:03,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647767 states, 647766 states have (on average 1.0846679202057534) internal successors, (702611), 647766 states have internal predecessors, (702611), 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) [2023-12-20 17:59:04,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647767 states to 647767 states and 702611 transitions. [2023-12-20 17:59:04,992 INFO L78 Accepts]: Start accepts. Automaton has 647767 states and 702611 transitions. Word has length 1410 [2023-12-20 17:59:04,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:59:04,992 INFO L495 AbstractCegarLoop]: Abstraction has 647767 states and 702611 transitions. [2023-12-20 17:59:04,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 311.0) internal successors, (933), 3 states have internal predecessors, (933), 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) [2023-12-20 17:59:04,993 INFO L276 IsEmpty]: Start isEmpty. Operand 647767 states and 702611 transitions. [2023-12-20 17:59:05,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1462 [2023-12-20 17:59:05,018 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:59:05,019 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:59:05,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 17:59:05,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:59:05,226 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:59:05,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:59:05,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1366849924, now seen corresponding path program 1 times [2023-12-20 17:59:05,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:59:05,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504462014] [2023-12-20 17:59:05,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:59:05,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:59:05,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:59:08,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1155 backedges. 657 proven. 0 refuted. 0 times theorem prover too weak. 498 trivial. 0 not checked. [2023-12-20 17:59:08,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:59:08,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504462014] [2023-12-20 17:59:08,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504462014] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:59:08,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:59:08,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:59:08,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655816460] [2023-12-20 17:59:08,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:59:08,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:59:08,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:59:08,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:59:08,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:59:08,900 INFO L87 Difference]: Start difference. First operand 647767 states and 702611 transitions. Second operand has 3 states, 3 states have (on average 321.6666666666667) internal successors, (965), 3 states have internal predecessors, (965), 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) [2023-12-20 17:59:18,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:59:18,705 INFO L93 Difference]: Finished difference Result 1393869 states and 1510554 transitions. [2023-12-20 17:59:18,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:59:18,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 321.6666666666667) internal successors, (965), 3 states have internal predecessors, (965), 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 1461 [2023-12-20 17:59:18,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:59:20,229 INFO L225 Difference]: With dead ends: 1393869 [2023-12-20 17:59:20,229 INFO L226 Difference]: Without dead ends: 747468 [2023-12-20 17:59:20,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:59:20,501 INFO L413 NwaCegarLoop]: 2137 mSDtfsCounter, 1575 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 4173 mSolverCounterSat, 1713 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1575 SdHoareTripleChecker+Valid, 2215 SdHoareTripleChecker+Invalid, 5886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1713 IncrementalHoareTripleChecker+Valid, 4173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:59:20,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1575 Valid, 2215 Invalid, 5886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1713 Valid, 4173 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-12-20 17:59:21,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747468 states.